diff options
Diffstat (limited to 'src/ltc/misc')
37 files changed, 2847 insertions, 0 deletions
diff --git a/src/ltc/misc/adler32.c b/src/ltc/misc/adler32.c new file mode 100644 index 00000000..987931bf --- /dev/null +++ b/src/ltc/misc/adler32.c @@ -0,0 +1,139 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file adler32.c + Adler-32 checksum algorithm + Written and placed in the public domain by Wei Dai + Adapted for libtomcrypt by Steffen Jaeckel +*/ +#ifdef LTC_ADLER32 + +static const unsigned long _adler32_base = 65521; + +void adler32_init(adler32_state *ctx) +{ + LTC_ARGCHKVD(ctx != NULL); + ctx->s[0] = 1; + ctx->s[1] = 0; +} + +void adler32_update(adler32_state *ctx, const unsigned char *input, unsigned long length) +{ + unsigned long s1, s2; + + LTC_ARGCHKVD(ctx != NULL); + LTC_ARGCHKVD(input != NULL); + s1 = ctx->s[0]; + s2 = ctx->s[1]; + + if (length % 8 != 0) { + do { + s1 += *input++; + s2 += s1; + length--; + } while (length % 8 != 0); + + if (s1 >= _adler32_base) + s1 -= _adler32_base; + s2 %= _adler32_base; + } + + while (length > 0) { + s1 += input[0]; + s2 += s1; + s1 += input[1]; + s2 += s1; + s1 += input[2]; + s2 += s1; + s1 += input[3]; + s2 += s1; + s1 += input[4]; + s2 += s1; + s1 += input[5]; + s2 += s1; + s1 += input[6]; + s2 += s1; + s1 += input[7]; + s2 += s1; + + length -= 8; + input += 8; + + if (s1 >= _adler32_base) + s1 -= _adler32_base; + s2 %= _adler32_base; + } + + LTC_ARGCHKVD(s1 < _adler32_base); + LTC_ARGCHKVD(s2 < _adler32_base); + + ctx->s[0] = (unsigned short)s1; + ctx->s[1] = (unsigned short)s2; +} + +void adler32_finish(adler32_state *ctx, void *hash, unsigned long size) +{ + unsigned char* h; + + LTC_ARGCHKVD(ctx != NULL); + LTC_ARGCHKVD(hash != NULL); + + h = hash; + + switch (size) { + default: + h[3] = ctx->s[0] & 0x0ff; + /* FALLTHROUGH */ + case 3: + h[2] = (ctx->s[0] >> 8) & 0x0ff; + /* FALLTHROUGH */ + case 2: + h[1] = ctx->s[1] & 0x0ff; + /* FALLTHROUGH */ + case 1: + h[0] = (ctx->s[1] >> 8) & 0x0ff; + /* FALLTHROUGH */ + case 0: + ; + } +} + +int adler32_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + const void* in = "libtomcrypt"; + const unsigned char adler32[] = { 0x1b, 0xe8, 0x04, 0xba }; + unsigned char out[4]; + adler32_state ctx; + adler32_init(&ctx); + adler32_update(&ctx, in, strlen(in)); + adler32_finish(&ctx, out, 4); + if (XMEMCMP(adler32, out, 4)) { +#ifdef LTC_TEST_DBG + ulong32 _out, _adler32; + LOAD32H(_out, out); + LOAD32H(_adler32, adler32); + printf("adler32 fail! Is: 0x%x Should: 0x%x\n", _out, _adler32); +#endif + return CRYPT_FAIL_TESTVECTOR; + } + return CRYPT_OK; +#endif +} +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/base64/base64_decode.c b/src/ltc/misc/base64/base64_decode.c new file mode 100644 index 00000000..d3b89b12 --- /dev/null +++ b/src/ltc/misc/base64/base64_decode.c @@ -0,0 +1,198 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file base64_decode.c + Compliant base64 code donated by Wayne Scott (wscott@bitmover.com) + base64 URL Safe variant (RFC 4648 section 5) by Karel Miko +*/ + + +#if defined(LTC_BASE64) || defined (LTC_BASE64_URL) + +#if defined(LTC_BASE64) +static const unsigned char map_base64[256] = { +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 62, 255, 255, 255, 63, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, +255, 254, 255, 255, 255, 0, 1, 2, 3, 4, 5, 6, + 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, + 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 255, +255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, + 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255 }; +#endif /* LTC_BASE64 */ + +static const unsigned char map_base64url[] = { +#if defined(LTC_BASE64_URL) +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 62, 255, 255, + 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 255, 255, +255, 254, 255, 255, 255, 0, 1, 2, 3, 4, 5, 6, + 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, + 19, 20, 21, 22, 23, 24, 25, 255, 255, 255, 255, 63, +255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, + 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, + 49, 50, 51, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, +255, 255, 255, 255 +#endif /* LTC_BASE64_URL */ +}; + +enum { + relaxed = 0, + strict = 1 +}; + +static int _base64_decode_internal(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const unsigned char *map, int is_strict) +{ + unsigned long t, x, y, z; + unsigned char c; + int g; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + g = 0; /* '=' counter */ + for (x = y = z = t = 0; x < inlen; x++) { + c = map[in[x]&0xFF]; + if (c == 254) { + g++; + continue; + } + else if (is_strict && g > 0) { + /* we only allow '=' to be at the end */ + return CRYPT_INVALID_PACKET; + } + if (c == 255) { + if (is_strict) + return CRYPT_INVALID_PACKET; + else + continue; + } + + t = (t<<6)|c; + + if (++y == 4) { + if (z + 3 > *outlen) return CRYPT_BUFFER_OVERFLOW; + out[z++] = (unsigned char)((t>>16)&255); + out[z++] = (unsigned char)((t>>8)&255); + out[z++] = (unsigned char)(t&255); + y = t = 0; + } + } + + if (y != 0) { + if (y == 1) return CRYPT_INVALID_PACKET; + if ((y + g) != 4 && is_strict && map != map_base64url) return CRYPT_INVALID_PACKET; + t = t << (6 * (4 - y)); + if (z + y - 1 > *outlen) return CRYPT_BUFFER_OVERFLOW; + if (y >= 2) out[z++] = (unsigned char) ((t >> 16) & 255); + if (y == 3) out[z++] = (unsigned char) ((t >> 8) & 255); + } + *outlen = z; + return CRYPT_OK; +} + +#if defined(LTC_BASE64) +/** + Relaxed base64 decode a block of memory + @param in The base64 data to decode + @param inlen The length of the base64 data + @param out [out] The destination of the binary decoded data + @param outlen [in/out] The max size and resulting size of the decoded data + @return CRYPT_OK if successful +*/ +int base64_decode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_decode_internal(in, inlen, out, outlen, map_base64, relaxed); +} + +/** + Strict base64 decode a block of memory + @param in The base64 data to decode + @param inlen The length of the base64 data + @param out [out] The destination of the binary decoded data + @param outlen [in/out] The max size and resulting size of the decoded data + @return CRYPT_OK if successful +*/ +int base64_strict_decode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_decode_internal(in, inlen, out, outlen, map_base64, strict); +} +#endif /* LTC_BASE64 */ + +#if defined(LTC_BASE64_URL) +/** + Relaxed base64 (URL Safe, RFC 4648 section 5) decode a block of memory + @param in The base64 data to decode + @param inlen The length of the base64 data + @param out [out] The destination of the binary decoded data + @param outlen [in/out] The max size and resulting size of the decoded data + @return CRYPT_OK if successful +*/ +int base64url_decode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_decode_internal(in, inlen, out, outlen, map_base64url, relaxed); +} + +/** + Strict base64 (URL Safe, RFC 4648 section 5) decode a block of memory + @param in The base64 data to decode + @param inlen The length of the base64 data + @param out [out] The destination of the binary decoded data + @param outlen [in/out] The max size and resulting size of the decoded data + @return CRYPT_OK if successful +*/ +int base64url_strict_decode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_decode_internal(in, inlen, out, outlen, map_base64url, strict); +} +#endif /* LTC_BASE64_URL */ + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/base64/base64_encode.c b/src/ltc/misc/base64/base64_encode.c new file mode 100644 index 00000000..ea3eaddd --- /dev/null +++ b/src/ltc/misc/base64/base64_encode.c @@ -0,0 +1,126 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file base64_encode.c + Compliant base64 encoder donated by Wayne Scott (wscott@bitmover.com) + base64 URL Safe variant (RFC 4648 section 5) by Karel Miko +*/ + + +#if defined(LTC_BASE64) || defined (LTC_BASE64_URL) + +#if defined(LTC_BASE64) +static const char * const codes_base64 = +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; +#endif /* LTC_BASE64 */ + +#if defined(LTC_BASE64_URL) +static const char * const codes_base64url = +"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"; +#endif /* LTC_BASE64_URL */ + +static int _base64_encode_internal(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen, + const char *codes, int pad) +{ + unsigned long i, len2, leven; + unsigned char *p; + + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* valid output size ? */ + len2 = 4 * ((inlen + 2) / 3); + if (*outlen < len2 + 1) { + *outlen = len2 + 1; + return CRYPT_BUFFER_OVERFLOW; + } + p = out; + leven = 3*(inlen / 3); + for (i = 0; i < leven; i += 3) { + *p++ = codes[(in[0] >> 2) & 0x3F]; + *p++ = codes[(((in[0] & 3) << 4) + (in[1] >> 4)) & 0x3F]; + *p++ = codes[(((in[1] & 0xf) << 2) + (in[2] >> 6)) & 0x3F]; + *p++ = codes[in[2] & 0x3F]; + in += 3; + } + /* Pad it if necessary... */ + if (i < inlen) { + unsigned a = in[0]; + unsigned b = (i+1 < inlen) ? in[1] : 0; + + *p++ = codes[(a >> 2) & 0x3F]; + *p++ = codes[(((a & 3) << 4) + (b >> 4)) & 0x3F]; + if (pad) { + *p++ = (i+1 < inlen) ? codes[(((b & 0xf) << 2)) & 0x3F] : '='; + *p++ = '='; + } + else { + if (i+1 < inlen) *p++ = codes[(((b & 0xf) << 2)) & 0x3F]; + } + } + + /* append a NULL byte */ + *p = '\0'; + + /* return ok */ + *outlen = (unsigned long)(p - out); + return CRYPT_OK; +} + +#if defined(LTC_BASE64) +/** + base64 Encode a buffer (NUL terminated) + @param in The input buffer to encode + @param inlen The length of the input buffer + @param out [out] The destination of the base64 encoded data + @param outlen [in/out] The max size and resulting size + @return CRYPT_OK if successful +*/ +int base64_encode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_encode_internal(in, inlen, out, outlen, codes_base64, 1); +} +#endif /* LTC_BASE64 */ + + +#if defined(LTC_BASE64_URL) +/** + base64 (URL Safe, RFC 4648 section 5) Encode a buffer (NUL terminated) + @param in The input buffer to encode + @param inlen The length of the input buffer + @param out [out] The destination of the base64 encoded data + @param outlen [in/out] The max size and resulting size + @return CRYPT_OK if successful +*/ +int base64url_encode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_encode_internal(in, inlen, out, outlen, codes_base64url, 0); +} + +int base64url_strict_encode(const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + return _base64_encode_internal(in, inlen, out, outlen, codes_base64url, 1); +} +#endif /* LTC_BASE64_URL */ + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/burn_stack.c b/src/ltc/misc/burn_stack.c new file mode 100644 index 00000000..2610c060 --- /dev/null +++ b/src/ltc/misc/burn_stack.c @@ -0,0 +1,34 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file burn_stack.c + Burn stack, Tom St Denis +*/ + +/** + Burn some stack memory + @param len amount of stack to burn in bytes +*/ +void burn_stack(unsigned long len) +{ + unsigned char buf[32]; + zeromem(buf, sizeof(buf)); + if (len > (unsigned long)sizeof(buf)) + burn_stack(len - sizeof(buf)); +} + + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crc32.c b/src/ltc/misc/crc32.c new file mode 100644 index 00000000..8228c292 --- /dev/null +++ b/src/ltc/misc/crc32.c @@ -0,0 +1,210 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crc32.c + CRC-32 checksum algorithm + Written and placed in the public domain by Wei Dai + Adapted for libtomcrypt by Steffen Jaeckel +*/ +#ifdef LTC_CRC32 + +static const ulong32 _CRC32_NEGL = 0xffffffffUL; + +#if defined(ENDIAN_LITTLE) +#define CRC32_INDEX(c) (c & 0xff) +#define CRC32_SHIFTED(c) (c >> 8) +#elif defined(ENDIAN_BIG) +#define CRC32_INDEX(c) (c >> 24) +#define CRC32_SHIFTED(c) (c << 8) +#else +#error The existing CRC32 implementation only works properly when the endianness of the target platform is known. +#endif + +/* Table of CRC-32's of all single byte values (made by makecrc.c) */ +static const ulong32 crc32_m_tab[] = +{ +#if defined(ENDIAN_LITTLE) + 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, + 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, + 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, + 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, + 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, + 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, + 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, + 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, + 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, + 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, + 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, + 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, + 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, + 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, + 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, + 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, + 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, + 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, + 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, + 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, + 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, + 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, + 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, + 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, + 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, + 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, + 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, + 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, + 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, + 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, + 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, + 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, + 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, + 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, + 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, + 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, + 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, + 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, + 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, + 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, + 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, + 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, + 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, + 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, + 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, + 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, + 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, + 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, + 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, + 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, + 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, + 0x2d02ef8dL +#else + 0x00000000L, 0x96300777L, 0x2c610eeeL, 0xba510999L, 0x19c46d07L, + 0x8ff46a70L, 0x35a563e9L, 0xa395649eL, 0x3288db0eL, 0xa4b8dc79L, + 0x1ee9d5e0L, 0x88d9d297L, 0x2b4cb609L, 0xbd7cb17eL, 0x072db8e7L, + 0x911dbf90L, 0x6410b71dL, 0xf220b06aL, 0x4871b9f3L, 0xde41be84L, + 0x7dd4da1aL, 0xebe4dd6dL, 0x51b5d4f4L, 0xc785d383L, 0x56986c13L, + 0xc0a86b64L, 0x7af962fdL, 0xecc9658aL, 0x4f5c0114L, 0xd96c0663L, + 0x633d0ffaL, 0xf50d088dL, 0xc8206e3bL, 0x5e10694cL, 0xe44160d5L, + 0x727167a2L, 0xd1e4033cL, 0x47d4044bL, 0xfd850dd2L, 0x6bb50aa5L, + 0xfaa8b535L, 0x6c98b242L, 0xd6c9bbdbL, 0x40f9bcacL, 0xe36cd832L, + 0x755cdf45L, 0xcf0dd6dcL, 0x593dd1abL, 0xac30d926L, 0x3a00de51L, + 0x8051d7c8L, 0x1661d0bfL, 0xb5f4b421L, 0x23c4b356L, 0x9995bacfL, + 0x0fa5bdb8L, 0x9eb80228L, 0x0888055fL, 0xb2d90cc6L, 0x24e90bb1L, + 0x877c6f2fL, 0x114c6858L, 0xab1d61c1L, 0x3d2d66b6L, 0x9041dc76L, + 0x0671db01L, 0xbc20d298L, 0x2a10d5efL, 0x8985b171L, 0x1fb5b606L, + 0xa5e4bf9fL, 0x33d4b8e8L, 0xa2c90778L, 0x34f9000fL, 0x8ea80996L, + 0x18980ee1L, 0xbb0d6a7fL, 0x2d3d6d08L, 0x976c6491L, 0x015c63e6L, + 0xf4516b6bL, 0x62616c1cL, 0xd8306585L, 0x4e0062f2L, 0xed95066cL, + 0x7ba5011bL, 0xc1f40882L, 0x57c40ff5L, 0xc6d9b065L, 0x50e9b712L, + 0xeab8be8bL, 0x7c88b9fcL, 0xdf1ddd62L, 0x492dda15L, 0xf37cd38cL, + 0x654cd4fbL, 0x5861b24dL, 0xce51b53aL, 0x7400bca3L, 0xe230bbd4L, + 0x41a5df4aL, 0xd795d83dL, 0x6dc4d1a4L, 0xfbf4d6d3L, 0x6ae96943L, + 0xfcd96e34L, 0x468867adL, 0xd0b860daL, 0x732d0444L, 0xe51d0333L, + 0x5f4c0aaaL, 0xc97c0dddL, 0x3c710550L, 0xaa410227L, 0x10100bbeL, + 0x86200cc9L, 0x25b56857L, 0xb3856f20L, 0x09d466b9L, 0x9fe461ceL, + 0x0ef9de5eL, 0x98c9d929L, 0x2298d0b0L, 0xb4a8d7c7L, 0x173db359L, + 0x810db42eL, 0x3b5cbdb7L, 0xad6cbac0L, 0x2083b8edL, 0xb6b3bf9aL, + 0x0ce2b603L, 0x9ad2b174L, 0x3947d5eaL, 0xaf77d29dL, 0x1526db04L, + 0x8316dc73L, 0x120b63e3L, 0x843b6494L, 0x3e6a6d0dL, 0xa85a6a7aL, + 0x0bcf0ee4L, 0x9dff0993L, 0x27ae000aL, 0xb19e077dL, 0x44930ff0L, + 0xd2a30887L, 0x68f2011eL, 0xfec20669L, 0x5d5762f7L, 0xcb676580L, + 0x71366c19L, 0xe7066b6eL, 0x761bd4feL, 0xe02bd389L, 0x5a7ada10L, + 0xcc4add67L, 0x6fdfb9f9L, 0xf9efbe8eL, 0x43beb717L, 0xd58eb060L, + 0xe8a3d6d6L, 0x7e93d1a1L, 0xc4c2d838L, 0x52f2df4fL, 0xf167bbd1L, + 0x6757bca6L, 0xdd06b53fL, 0x4b36b248L, 0xda2b0dd8L, 0x4c1b0aafL, + 0xf64a0336L, 0x607a0441L, 0xc3ef60dfL, 0x55df67a8L, 0xef8e6e31L, + 0x79be6946L, 0x8cb361cbL, 0x1a8366bcL, 0xa0d26f25L, 0x36e26852L, + 0x95770cccL, 0x03470bbbL, 0xb9160222L, 0x2f260555L, 0xbe3bbac5L, + 0x280bbdb2L, 0x925ab42bL, 0x046ab35cL, 0xa7ffd7c2L, 0x31cfd0b5L, + 0x8b9ed92cL, 0x1daede5bL, 0xb0c2649bL, 0x26f263ecL, 0x9ca36a75L, + 0x0a936d02L, 0xa906099cL, 0x3f360eebL, 0x85670772L, 0x13570005L, + 0x824abf95L, 0x147ab8e2L, 0xae2bb17bL, 0x381bb60cL, 0x9b8ed292L, + 0x0dbed5e5L, 0xb7efdc7cL, 0x21dfdb0bL, 0xd4d2d386L, 0x42e2d4f1L, + 0xf8b3dd68L, 0x6e83da1fL, 0xcd16be81L, 0x5b26b9f6L, 0xe177b06fL, + 0x7747b718L, 0xe65a0888L, 0x706a0fffL, 0xca3b0666L, 0x5c0b0111L, + 0xff9e658fL, 0x69ae62f8L, 0xd3ff6b61L, 0x45cf6c16L, 0x78e20aa0L, + 0xeed20dd7L, 0x5483044eL, 0xc2b30339L, 0x612667a7L, 0xf71660d0L, + 0x4d476949L, 0xdb776e3eL, 0x4a6ad1aeL, 0xdc5ad6d9L, 0x660bdf40L, + 0xf03bd837L, 0x53aebca9L, 0xc59ebbdeL, 0x7fcfb247L, 0xe9ffb530L, + 0x1cf2bdbdL, 0x8ac2bacaL, 0x3093b353L, 0xa6a3b424L, 0x0536d0baL, + 0x9306d7cdL, 0x2957de54L, 0xbf67d923L, 0x2e7a66b3L, 0xb84a61c4L, + 0x021b685dL, 0x942b6f2aL, 0x37be0bb4L, 0xa18e0cc3L, 0x1bdf055aL, + 0x8def022dL +#endif +}; + +void crc32_init(crc32_state *ctx) +{ + LTC_ARGCHKVD(ctx != NULL); + ctx->crc = _CRC32_NEGL; +} + +void crc32_update(crc32_state *ctx, const unsigned char *input, unsigned long length) +{ + ulong32 crc; + LTC_ARGCHKVD(ctx != NULL); + LTC_ARGCHKVD(input != NULL); + crc = ctx->crc; + + while (length--) + crc = crc32_m_tab[CRC32_INDEX(crc) ^ *input++] ^ CRC32_SHIFTED(crc); + + ctx->crc = crc; +} + +void crc32_finish(crc32_state *ctx, void *hash, unsigned long size) +{ + unsigned long i; + unsigned char* h; + ulong32 crc; + LTC_ARGCHKVD(ctx != NULL); + LTC_ARGCHKVD(hash != NULL); + + h = hash; + crc = ctx->crc; + crc ^= _CRC32_NEGL; + + if (size > 4) size = 4; + for (i = 0; i < size; i++) { + h[i] = ((unsigned char*)&(crc))[size-i-1]; + } +} + +int crc32_test(void) +{ +#ifndef LTC_TEST + return CRYPT_NOP; +#else + const void* in = "libtomcrypt"; + const unsigned char crc32[] = { 0xb3, 0x73, 0x76, 0xef }; + unsigned char out[4]; + crc32_state ctx; + crc32_init(&ctx); + crc32_update(&ctx, in, strlen(in)); + crc32_finish(&ctx, out, 4); + if (XMEMCMP(crc32, out, 4)) { +#ifdef LTC_TEST_DBG + ulong32 _out, _crc32; + LOAD32H(_out, out); + LOAD32H(_crc32, crc32); + printf("crc32 fail! Is: 0x%x Should: 0x%x\n", _out, _crc32); +#endif + return CRYPT_FAIL_TESTVECTOR; + } + return CRYPT_OK; +#endif +} +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt.c b/src/ltc/misc/crypt/crypt.c new file mode 100644 index 00000000..cfe26063 --- /dev/null +++ b/src/ltc/misc/crypt/crypt.c @@ -0,0 +1,486 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt.c + Build strings, Tom St Denis +*/ +#define NAME_VALUE(s) #s"="NAME(s) +#define NAME(s) #s + +const char *crypt_build_settings = + "LibTomCrypt " SCRYPT " (Tom St Denis, tomstdenis@gmail.com)\n" + "LibTomCrypt is public domain software.\n" +#if defined(INCLUDE_BUILD_DATE) + "Built on " __DATE__ " at " __TIME__ "\n" +#endif + "\n\nEndianness: " +#if defined(ENDIAN_NEUTRAL) + "neutral/" +#endif +#if defined(ENDIAN_LITTLE) + "little" +#elif defined(ENDIAN_BIG) + "big" +#endif + #if defined(ENDIAN_32BITWORD) + " (32-bit words)\n" + #elif defined(ENDIAN_64BITWORD) + " (64-bit words)\n" + #else + " (no wordsize defined)\n" + #endif + "Clean stack: " +#if defined(LTC_CLEAN_STACK) + "enabled\n" +#else + "disabled\n" +#endif + "Ciphers built-in:\n" +#if defined(LTC_BLOWFISH) + " Blowfish\n" +#endif +#if defined(LTC_RC2) + " RC2\n" +#endif +#if defined(LTC_RC5) + " RC5\n" +#endif +#if defined(LTC_RC6) + " RC6\n" +#endif +#if defined(LTC_SAFERP) + " Safer+\n" +#endif +#if defined(LTC_SAFER) + " Safer\n" +#endif +#if defined(LTC_RIJNDAEL) + " Rijndael\n" +#endif +#if defined(LTC_XTEA) + " XTEA\n" +#endif +#if defined(LTC_TWOFISH) + " Twofish " + #if defined(LTC_TWOFISH_SMALL) && defined(LTC_TWOFISH_TABLES) && defined(LTC_TWOFISH_ALL_TABLES) + "(small, tables, all_tables)\n" + #elif defined(LTC_TWOFISH_SMALL) && defined(LTC_TWOFISH_TABLES) + "(small, tables)\n" + #elif defined(LTC_TWOFISH_SMALL) && defined(LTC_TWOFISH_ALL_TABLES) + "(small, all_tables)\n" + #elif defined(LTC_TWOFISH_TABLES) && defined(LTC_TWOFISH_ALL_TABLES) + "(tables, all_tables)\n" + #elif defined(LTC_TWOFISH_SMALL) + "(small)\n" + #elif defined(LTC_TWOFISH_TABLES) + "(tables)\n" + #elif defined(LTC_TWOFISH_ALL_TABLES) + "(all_tables)\n" + #else + "\n" + #endif +#endif +#if defined(LTC_DES) + " DES\n" +#endif +#if defined(LTC_CAST5) + " CAST5\n" +#endif +#if defined(LTC_NOEKEON) + " Noekeon\n" +#endif +#if defined(LTC_SKIPJACK) + " Skipjack\n" +#endif +#if defined(LTC_KHAZAD) + " Khazad\n" +#endif +#if defined(LTC_ANUBIS) + " Anubis " +#endif +#if defined(LTC_ANUBIS_TWEAK) + " (tweaked)" +#endif + "\n" +#if defined(LTC_KSEED) + " KSEED\n" +#endif +#if defined(LTC_KASUMI) + " KASUMI\n" +#endif +#if defined(LTC_MULTI2) + " MULTI2\n" +#endif +#if defined(LTC_CAMELLIA) + " Camellia\n" +#endif + "Stream ciphers built-in:\n" +#if defined(LTC_CHACHA) + " ChaCha\n" +#endif +#if defined(LTC_RC4_STREAM) + " RC4\n" +#endif +#if defined(LTC_SOBER128_STREAM) + " SOBER128\n" +#endif + + "\nHashes built-in:\n" +#if defined(LTC_SHA3) + " SHA3\n" +#endif +#if defined(LTC_SHA512) + " SHA-512\n" +#endif +#if defined(LTC_SHA384) + " SHA-384\n" +#endif +#if defined(LTC_SHA512_256) + " SHA-512/256\n" +#endif +#if defined(LTC_SHA256) + " SHA-256\n" +#endif +#if defined(LTC_SHA512_224) + " SHA-512/224\n" +#endif +#if defined(LTC_SHA224) + " SHA-224\n" +#endif +#if defined(LTC_TIGER) + " TIGER\n" +#endif +#if defined(LTC_SHA1) + " SHA1\n" +#endif +#if defined(LTC_MD5) + " MD5\n" +#endif +#if defined(LTC_MD4) + " MD4\n" +#endif +#if defined(LTC_MD2) + " MD2\n" +#endif +#if defined(LTC_RIPEMD128) + " RIPEMD128\n" +#endif +#if defined(LTC_RIPEMD160) + " RIPEMD160\n" +#endif +#if defined(LTC_RIPEMD256) + " RIPEMD256\n" +#endif +#if defined(LTC_RIPEMD320) + " RIPEMD320\n" +#endif +#if defined(LTC_WHIRLPOOL) + " WHIRLPOOL\n" +#endif +#if defined(LTC_BLAKE2S) + " BLAKE2S\n" +#endif +#if defined(LTC_BLAKE2B) + " BLAKE2B\n" +#endif +#if defined(LTC_CHC_HASH) + " CHC_HASH\n" +#endif + + "\nBlock Chaining Modes:\n" +#if defined(LTC_CFB_MODE) + " CFB\n" +#endif +#if defined(LTC_OFB_MODE) + " OFB\n" +#endif +#if defined(LTC_ECB_MODE) + " ECB\n" +#endif +#if defined(LTC_CBC_MODE) + " CBC\n" +#endif +#if defined(LTC_CTR_MODE) + " CTR\n" +#endif +#if defined(LTC_LRW_MODE) + " LRW" +#if defined(LTC_LRW_TABLES) + " (tables) " +#endif + "\n" +#endif +#if defined(LTC_F8_MODE) + " F8\n" +#endif +#if defined(LTC_XTS_MODE) + " XTS\n" +#endif + + "\nMACs:\n" +#if defined(LTC_HMAC) + " HMAC\n" +#endif +#if defined(LTC_OMAC) + " OMAC\n" +#endif +#if defined(LTC_PMAC) + " PMAC\n" +#endif +#if defined(LTC_PELICAN) + " PELICAN\n" +#endif +#if defined(LTC_XCBC) + " XCBC\n" +#endif +#if defined(LTC_F9_MODE) + " F9\n" +#endif +#if defined(LTC_POLY1305) + " POLY1305\n" +#endif +#if defined(LTC_BLAKE2SMAC) + " BLAKE2S MAC\n" +#endif +#if defined(LTC_BLAKE2BMAC) + " BLAKE2B MAC\n" +#endif + + "\nENC + AUTH modes:\n" +#if defined(LTC_EAX_MODE) + " EAX\n" +#endif +#if defined(LTC_OCB_MODE) + " OCB\n" +#endif +#if defined(LTC_OCB3_MODE) + " OCB3\n" +#endif +#if defined(LTC_CCM_MODE) + " CCM\n" +#endif +#if defined(LTC_GCM_MODE) + " GCM" +#if defined(LTC_GCM_TABLES) + " (tables) " +#endif +#if defined(LTC_GCM_TABLES_SSE2) + " (SSE2) " +#endif + "\n" +#endif +#if defined(LTC_CHACHA20POLY1305_MODE) + " CHACHA20POLY1305\n" +#endif + + "\nPRNG:\n" +#if defined(LTC_YARROW) + " Yarrow ("NAME_VALUE(LTC_YARROW_AES)")\n" +#endif +#if defined(LTC_SPRNG) + " SPRNG\n" +#endif +#if defined(LTC_RC4) + " RC4\n" +#endif +#if defined(LTC_CHACHA20_PRNG) + " ChaCha20\n" +#endif +#if defined(LTC_FORTUNA) + " Fortuna (" NAME_VALUE(LTC_FORTUNA_POOLS) ", " NAME_VALUE(LTC_FORTUNA_WD) ")\n" +#endif +#if defined(LTC_SOBER128) + " SOBER128\n" +#endif + + "\nPK Algs:\n" +#if defined(LTC_MRSA) + " RSA" +#if defined(LTC_RSA_BLINDING) && defined(LTC_RSA_CRT_HARDENING) + " (with blinding and CRT hardening)" +#elif defined(LTC_RSA_BLINDING) + " (with blinding)" +#elif defined(LTC_RSA_CRT_HARDENING) + " (with CRT hardening)" +#endif + "\n" +#endif +#if defined(LTC_MDH) + " DH\n" +#endif +#if defined(LTC_MECC) + " ECC" +#if defined(LTC_ECC_TIMING_RESISTANT) + " (with blinding)" +#endif + "\n" +#endif +#if defined(LTC_MDSA) + " DSA\n" +#endif +#if defined(LTC_MKAT) + " Katja\n" +#endif + + "\nCompiler:\n" +#if defined(_WIN64) + " WIN64 platform detected.\n" +#elif defined(_WIN32) + " WIN32 platform detected.\n" +#endif +#if defined(__CYGWIN__) + " CYGWIN Detected.\n" +#endif +#if defined(__DJGPP__) + " DJGPP Detected.\n" +#endif +#if defined(_MSC_VER) + " MSVC compiler detected.\n" +#endif +#if defined(__clang_version__) + " Clang compiler " __clang_version__ ".\n" +#elif defined(INTEL_CC) + " Intel C Compiler " __VERSION__ ".\n" +#elif defined(__GNUC__) /* clang and icc also define __GNUC__ */ + " GCC compiler " __VERSION__ ".\n" +#endif + +#if defined(__x86_64__) + " x86-64 detected.\n" +#endif +#if defined(LTC_PPC32) + " PPC32 detected.\n" +#endif + + "\nVarious others: " +#if defined(LTC_ADLER32) + " ADLER32 " +#endif +#if defined(LTC_BASE64) + " BASE64 " +#endif +#if defined(LTC_BASE64_URL) + " BASE64-URL-SAFE " +#endif +#if defined(LTC_CRC32) + " CRC32 " +#endif +#if defined(LTC_DER) + " DER " +#endif +#if defined(LTC_DER_MAX_PUBKEY_SIZE) + " " NAME_VALUE(LTC_DER_MAX_PUBKEY_SIZE) " " +#endif +#if defined(LTC_PKCS_1) + " PKCS#1 " +#endif +#if defined(LTC_PKCS_5) + " PKCS#5 " +#endif +#if defined(LTC_HKDF) + " HKDF " +#endif +#if defined(MPI) + " MPI " +#endif +#if defined(LTC_DEVRANDOM) + " LTC_DEVRANDOM " +#endif +#if defined(LTC_TRY_URANDOM_FIRST) + " LTC_TRY_URANDOM_FIRST " +#endif +#if defined(LTC_RNG_GET_BYTES) + " LTC_RNG_GET_BYTES " +#endif +#if defined(LTC_RNG_MAKE_PRNG) + " LTC_RNG_MAKE_PRNG " +#endif +#if defined(LTC_PRNG_ENABLE_LTC_RNG) + " LTC_PRNG_ENABLE_LTC_RNG " +#endif +#if defined(LTC_HASH_HELPERS) + " LTC_HASH_HELPERS " +#endif +#if defined(LTC_VALGRIND) + " LTC_VALGRIND " +#endif +#if defined(LTC_TEST) + " LTC_TEST " +#endif +#if defined(LTC_TEST_EXT) + " LTC_TEST_EXT " +#endif +#if defined(LTC_SMALL_CODE) + " LTC_SMALL_CODE " +#endif +#if defined(LTC_NO_FILE) + " LTC_NO_FILE " +#endif +#if defined(LTC_FILE_READ_BUFSIZE) + " " NAME_VALUE(LTC_FILE_READ_BUFSIZE) " " +#endif +#if defined(LTC_FAST) + " LTC_FAST " +#endif +#if defined(LTC_NO_FAST) + " LTC_NO_FAST " +#endif +#if defined(LTC_NO_BSWAP) + " LTC_NO_BSWAP " +#endif +#if defined(LTC_NO_ASM) + " LTC_NO_ASM " +#endif +#if defined(LTC_ROx_ASM) + " LTC_ROx_ASM " +#if defined(LTC_NO_ROLC) + " LTC_NO_ROLC " +#endif +#endif +#if defined(LTC_NO_TEST) + " LTC_NO_TEST " +#endif +#if defined(LTC_NO_TABLES) + " LTC_NO_TABLES " +#endif +#if defined(LTC_PTHREAD) + " LTC_PTHREAD " +#endif +#if defined(LTM_DESC) + " LTM_DESC " +#endif +#if defined(TFM_DESC) + " TFM_DESC " +#endif +#if defined(GMP_DESC) + " GMP_DESC " +#endif +#if defined(LTC_EASY) + " LTC_EASY " +#endif +#if defined(LTC_MECC_ACCEL) + " LTC_MECC_ACCEL " +#endif +#if defined(LTC_MECC_FP) + " LTC_MECC_FP " +#endif +#if defined(LTC_ECC_SHAMIR) + " LTC_ECC_SHAMIR " +#endif + "\n" + ; + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_argchk.c b/src/ltc/misc/crypt/crypt_argchk.c new file mode 100644 index 00000000..85888967 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_argchk.c @@ -0,0 +1,29 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_argchk.c + Perform argument checking, Tom St Denis +*/ + +#if (ARGTYPE == 0) +void crypt_argchk(char *v, char *s, int d) +{ + fprintf(stderr, "LTC_ARGCHK '%s' failure on line %d of file %s\n", + v, d, s); + abort(); +} +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_cipher_descriptor.c b/src/ltc/misc/crypt/crypt_cipher_descriptor.c new file mode 100644 index 00000000..2e35787a --- /dev/null +++ b/src/ltc/misc/crypt/crypt_cipher_descriptor.c @@ -0,0 +1,27 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_cipher_descriptor.c + Stores the cipher descriptor table, Tom St Denis +*/ + +struct ltc_cipher_descriptor cipher_descriptor[TAB_SIZE] = { +{ NULL, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL } + }; + +LTC_MUTEX_GLOBAL(ltc_cipher_mutex) + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_cipher_is_valid.c b/src/ltc/misc/crypt/crypt_cipher_is_valid.c new file mode 100644 index 00000000..35f1ace8 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_cipher_is_valid.c @@ -0,0 +1,36 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_cipher_is_valid.c + Determine if cipher is valid, Tom St Denis +*/ + +/* + Test if a cipher index is valid + @param idx The index of the cipher to search for + @return CRYPT_OK if valid +*/ +int cipher_is_valid(int idx) +{ + LTC_MUTEX_LOCK(<c_cipher_mutex); + if (idx < 0 || idx >= TAB_SIZE || cipher_descriptor[idx].name == NULL) { + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return CRYPT_INVALID_CIPHER; + } + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return CRYPT_OK; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_cipher.c b/src/ltc/misc/crypt/crypt_find_cipher.c new file mode 100644 index 00000000..0c563b0d --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_cipher.c @@ -0,0 +1,41 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_cipher.c + Find a cipher in the descriptor tables, Tom St Denis +*/ + +/** + Find a registered cipher by name + @param name The name of the cipher to look for + @return >= 0 if found, -1 if not present +*/ +int find_cipher(const char *name) +{ + int x; + LTC_ARGCHK(name != NULL); + LTC_MUTEX_LOCK(<c_cipher_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name != NULL && !XSTRCMP(cipher_descriptor[x].name, name)) { + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return -1; +} + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_cipher_any.c b/src/ltc/misc/crypt/crypt_find_cipher_any.c new file mode 100644 index 00000000..34cd8f00 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_cipher_any.c @@ -0,0 +1,50 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_cipher_any.c + Find a cipher in the descriptor tables, Tom St Denis +*/ + +/** + Find a cipher flexibly. First by name then if not present by block and key size + @param name The name of the cipher desired + @param blocklen The minimum length of the block cipher desired (octets) + @param keylen The minimum length of the key size desired (octets) + @return >= 0 if found, -1 if not present +*/ +int find_cipher_any(const char *name, int blocklen, int keylen) +{ + int x; + + LTC_ARGCHK(name != NULL); + + x = find_cipher(name); + if (x != -1) return x; + + LTC_MUTEX_LOCK(<c_cipher_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name == NULL) { + continue; + } + if (blocklen <= (int)cipher_descriptor[x].block_length && keylen <= (int)cipher_descriptor[x].max_key_length) { + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_cipher_id.c b/src/ltc/misc/crypt/crypt_find_cipher_id.c new file mode 100644 index 00000000..be4e0fa9 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_cipher_id.c @@ -0,0 +1,40 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_cipher_id.c + Find cipher by ID, Tom St Denis +*/ + +/** + Find a cipher by ID number + @param ID The ID (not same as index) of the cipher to find + @return >= 0 if found, -1 if not present +*/ +int find_cipher_id(unsigned char ID) +{ + int x; + LTC_MUTEX_LOCK(<c_cipher_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].ID == ID) { + x = (cipher_descriptor[x].name == NULL) ? -1 : x; + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_hash.c b/src/ltc/misc/crypt/crypt_find_hash.c new file mode 100644 index 00000000..12ef320e --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_hash.c @@ -0,0 +1,40 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_hash.c + Find a hash, Tom St Denis +*/ + +/** + Find a registered hash by name + @param name The name of the hash to look for + @return >= 0 if found, -1 if not present +*/ +int find_hash(const char *name) +{ + int x; + LTC_ARGCHK(name != NULL); + LTC_MUTEX_LOCK(<c_hash_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name != NULL && XSTRCMP(hash_descriptor[x].name, name) == 0) { + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_hash_any.c b/src/ltc/misc/crypt/crypt_find_hash_any.c new file mode 100644 index 00000000..777ce087 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_hash_any.c @@ -0,0 +1,49 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_hash_any.c + Find a hash, Tom St Denis +*/ + +/** + Find a hash flexibly. First by name then if not present by digest size + @param name The name of the hash desired + @param digestlen The minimum length of the digest size (octets) + @return >= 0 if found, -1 if not present +*/int find_hash_any(const char *name, int digestlen) +{ + int x, y, z; + LTC_ARGCHK(name != NULL); + + x = find_hash(name); + if (x != -1) return x; + + LTC_MUTEX_LOCK(<c_hash_mutex); + y = MAXBLOCKSIZE+1; + z = -1; + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name == NULL) { + continue; + } + if ((int)hash_descriptor[x].hashsize >= digestlen && (int)hash_descriptor[x].hashsize < y) { + z = x; + y = hash_descriptor[x].hashsize; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return z; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_hash_id.c b/src/ltc/misc/crypt/crypt_find_hash_id.c new file mode 100644 index 00000000..f8e75fcb --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_hash_id.c @@ -0,0 +1,40 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_hash_id.c + Find hash by ID, Tom St Denis +*/ + +/** + Find a hash by ID number + @param ID The ID (not same as index) of the hash to find + @return >= 0 if found, -1 if not present +*/ +int find_hash_id(unsigned char ID) +{ + int x; + LTC_MUTEX_LOCK(<c_hash_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].ID == ID) { + x = (hash_descriptor[x].name == NULL) ? -1 : x; + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_hash_oid.c b/src/ltc/misc/crypt/crypt_find_hash_oid.c new file mode 100644 index 00000000..19aece78 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_hash_oid.c @@ -0,0 +1,35 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_hash_oid.c + Find a hash, Tom St Denis +*/ + +int find_hash_oid(const unsigned long *ID, unsigned long IDlen) +{ + int x; + LTC_ARGCHK(ID != NULL); + LTC_MUTEX_LOCK(<c_hash_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name != NULL && hash_descriptor[x].OIDlen == IDlen && !XMEMCMP(hash_descriptor[x].OID, ID, sizeof(unsigned long) * IDlen)) { + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_find_prng.c b/src/ltc/misc/crypt/crypt_find_prng.c new file mode 100644 index 00000000..af3f7b69 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_find_prng.c @@ -0,0 +1,41 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_find_prng.c + Find a PRNG, Tom St Denis +*/ + +/** + Find a registered PRNG by name + @param name The name of the PRNG to look for + @return >= 0 if found, -1 if not present +*/ +int find_prng(const char *name) +{ + int x; + LTC_ARGCHK(name != NULL); + LTC_MUTEX_LOCK(<c_prng_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if ((prng_descriptor[x].name != NULL) && XSTRCMP(prng_descriptor[x].name, name) == 0) { + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return x; + } + } + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return -1; +} + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_fsa.c b/src/ltc/misc/crypt/crypt_fsa.c new file mode 100644 index 00000000..e177f9aa --- /dev/null +++ b/src/ltc/misc/crypt/crypt_fsa.c @@ -0,0 +1,58 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" +#include <stdarg.h> + +/** + @file crypt_fsa.c + LibTomCrypt FULL SPEED AHEAD!, Tom St Denis +*/ + +/* format is ltc_mp, cipher_desc, [cipher_desc], NULL, hash_desc, [hash_desc], NULL, prng_desc, [prng_desc], NULL */ +int crypt_fsa(void *mp, ...) +{ + va_list args; + void *p; + + va_start(args, mp); + if (mp != NULL) { + XMEMCPY(<c_mp, mp, sizeof(ltc_mp)); + } + + while ((p = va_arg(args, void*)) != NULL) { + if (register_cipher(p) == -1) { + va_end(args); + return CRYPT_INVALID_CIPHER; + } + } + + while ((p = va_arg(args, void*)) != NULL) { + if (register_hash(p) == -1) { + va_end(args); + return CRYPT_INVALID_HASH; + } + } + + while ((p = va_arg(args, void*)) != NULL) { + if (register_prng(p) == -1) { + va_end(args); + return CRYPT_INVALID_PRNG; + } + } + + va_end(args); + return CRYPT_OK; +} + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_hash_descriptor.c b/src/ltc/misc/crypt/crypt_hash_descriptor.c new file mode 100644 index 00000000..4e8bce1f --- /dev/null +++ b/src/ltc/misc/crypt/crypt_hash_descriptor.c @@ -0,0 +1,27 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_hash_descriptor.c + Stores the hash descriptor table, Tom St Denis +*/ + +struct ltc_hash_descriptor hash_descriptor[TAB_SIZE] = { +{ NULL, 0, 0, 0, { 0 }, 0, NULL, NULL, NULL, NULL, NULL } +}; + +LTC_MUTEX_GLOBAL(ltc_hash_mutex) + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_hash_is_valid.c b/src/ltc/misc/crypt/crypt_hash_is_valid.c new file mode 100644 index 00000000..dbab714e --- /dev/null +++ b/src/ltc/misc/crypt/crypt_hash_is_valid.c @@ -0,0 +1,36 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_hash_is_valid.c + Determine if hash is valid, Tom St Denis +*/ + +/* + Test if a hash index is valid + @param idx The index of the hash to search for + @return CRYPT_OK if valid +*/ +int hash_is_valid(int idx) +{ + LTC_MUTEX_LOCK(<c_hash_mutex); + if (idx < 0 || idx >= TAB_SIZE || hash_descriptor[idx].name == NULL) { + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return CRYPT_INVALID_HASH; + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return CRYPT_OK; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_inits.c b/src/ltc/misc/crypt/crypt_inits.c new file mode 100644 index 00000000..cc92f52f --- /dev/null +++ b/src/ltc/misc/crypt/crypt_inits.c @@ -0,0 +1,44 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_inits.c + + Provide math library functions for dynamic languages + like Python - Larry Bugbee, February 2013 +*/ + + +#ifdef LTM_DESC +void init_LTM(void) { + ltc_mp = ltm_desc; +} +#endif + +#ifdef TFM_DESC +void init_TFM(void) { + ltc_mp = tfm_desc; +} +#endif + +/* *** use of GMP is untested *** +#ifdef GMP_DESC +void init_GMP(void) { + ltc_mp = gmp_desc; +} +#endif +*/ + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_ltc_mp_descriptor.c b/src/ltc/misc/crypt/crypt_ltc_mp_descriptor.c new file mode 100644 index 00000000..0577d1df --- /dev/null +++ b/src/ltc/misc/crypt/crypt_ltc_mp_descriptor.c @@ -0,0 +1,13 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +ltc_math_descriptor ltc_mp; diff --git a/src/ltc/misc/crypt/crypt_prng_descriptor.c b/src/ltc/misc/crypt/crypt_prng_descriptor.c new file mode 100644 index 00000000..926f3bb6 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_prng_descriptor.c @@ -0,0 +1,26 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_prng_descriptor.c + Stores the PRNG descriptors, Tom St Denis +*/ +struct ltc_prng_descriptor prng_descriptor[TAB_SIZE] = { +{ NULL, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL } +}; + +LTC_MUTEX_GLOBAL(ltc_prng_mutex) + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_prng_is_valid.c b/src/ltc/misc/crypt/crypt_prng_is_valid.c new file mode 100644 index 00000000..ccc6e048 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_prng_is_valid.c @@ -0,0 +1,36 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_prng_is_valid.c + Determine if PRNG is valid, Tom St Denis +*/ + +/* + Test if a PRNG index is valid + @param idx The index of the PRNG to search for + @return CRYPT_OK if valid +*/ +int prng_is_valid(int idx) +{ + LTC_MUTEX_LOCK(<c_prng_mutex); + if (idx < 0 || idx >= TAB_SIZE || prng_descriptor[idx].name == NULL) { + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return CRYPT_INVALID_PRNG; + } + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return CRYPT_OK; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_register_cipher.c b/src/ltc/misc/crypt/crypt_register_cipher.c new file mode 100644 index 00000000..d7feedfe --- /dev/null +++ b/src/ltc/misc/crypt/crypt_register_cipher.c @@ -0,0 +1,54 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_register_cipher.c + Register a cipher, Tom St Denis +*/ + +/** + Register a cipher with the descriptor table + @param cipher The cipher you wish to register + @return value >= 0 if successfully added (or already present), -1 if unsuccessful +*/ +int register_cipher(const struct ltc_cipher_descriptor *cipher) +{ + int x; + + LTC_ARGCHK(cipher != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_cipher_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name != NULL && cipher_descriptor[x].ID == cipher->ID) { + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return x; + } + } + + /* find a blank spot */ + for (x = 0; x < TAB_SIZE; x++) { + if (cipher_descriptor[x].name == NULL) { + XMEMCPY(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor)); + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return x; + } + } + + /* no spot */ + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_register_hash.c b/src/ltc/misc/crypt/crypt_register_hash.c new file mode 100644 index 00000000..10ccee43 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_register_hash.c @@ -0,0 +1,54 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_register_hash.c + Register a HASH, Tom St Denis +*/ + +/** + Register a hash with the descriptor table + @param hash The hash you wish to register + @return value >= 0 if successfully added (or already present), -1 if unsuccessful +*/ +int register_hash(const struct ltc_hash_descriptor *hash) +{ + int x; + + LTC_ARGCHK(hash != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_hash_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (XMEMCMP(&hash_descriptor[x], hash, sizeof(struct ltc_hash_descriptor)) == 0) { + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return x; + } + } + + /* find a blank spot */ + for (x = 0; x < TAB_SIZE; x++) { + if (hash_descriptor[x].name == NULL) { + XMEMCPY(&hash_descriptor[x], hash, sizeof(struct ltc_hash_descriptor)); + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return x; + } + } + + /* no spot */ + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_register_prng.c b/src/ltc/misc/crypt/crypt_register_prng.c new file mode 100644 index 00000000..faebb180 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_register_prng.c @@ -0,0 +1,54 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_register_prng.c + Register a PRNG, Tom St Denis +*/ + +/** + Register a PRNG with the descriptor table + @param prng The PRNG you wish to register + @return value >= 0 if successfully added (or already present), -1 if unsuccessful +*/ +int register_prng(const struct ltc_prng_descriptor *prng) +{ + int x; + + LTC_ARGCHK(prng != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_prng_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (XMEMCMP(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)) == 0) { + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return x; + } + } + + /* find a blank spot */ + for (x = 0; x < TAB_SIZE; x++) { + if (prng_descriptor[x].name == NULL) { + XMEMCPY(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)); + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return x; + } + } + + /* no spot */ + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return -1; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_unregister_cipher.c b/src/ltc/misc/crypt/crypt_unregister_cipher.c new file mode 100644 index 00000000..b75785f3 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_unregister_cipher.c @@ -0,0 +1,45 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_unregister_cipher.c + Unregister a cipher, Tom St Denis +*/ + +/** + Unregister a cipher from the descriptor table + @param cipher The cipher descriptor to remove + @return CRYPT_OK on success +*/ +int unregister_cipher(const struct ltc_cipher_descriptor *cipher) +{ + int x; + + LTC_ARGCHK(cipher != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_cipher_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (XMEMCMP(&cipher_descriptor[x], cipher, sizeof(struct ltc_cipher_descriptor)) == 0) { + cipher_descriptor[x].name = NULL; + cipher_descriptor[x].ID = 255; + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return CRYPT_OK; + } + } + LTC_MUTEX_UNLOCK(<c_cipher_mutex); + return CRYPT_ERROR; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_unregister_hash.c b/src/ltc/misc/crypt/crypt_unregister_hash.c new file mode 100644 index 00000000..ac95d2dc --- /dev/null +++ b/src/ltc/misc/crypt/crypt_unregister_hash.c @@ -0,0 +1,44 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_unregister_hash.c + Unregister a hash, Tom St Denis +*/ + +/** + Unregister a hash from the descriptor table + @param hash The hash descriptor to remove + @return CRYPT_OK on success +*/ +int unregister_hash(const struct ltc_hash_descriptor *hash) +{ + int x; + + LTC_ARGCHK(hash != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_hash_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (XMEMCMP(&hash_descriptor[x], hash, sizeof(struct ltc_hash_descriptor)) == 0) { + hash_descriptor[x].name = NULL; + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return CRYPT_OK; + } + } + LTC_MUTEX_UNLOCK(<c_hash_mutex); + return CRYPT_ERROR; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/crypt/crypt_unregister_prng.c b/src/ltc/misc/crypt/crypt_unregister_prng.c new file mode 100644 index 00000000..424131a8 --- /dev/null +++ b/src/ltc/misc/crypt/crypt_unregister_prng.c @@ -0,0 +1,44 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file crypt_unregister_prng.c + Unregister a PRNG, Tom St Denis +*/ + +/** + Unregister a PRNG from the descriptor table + @param prng The PRNG descriptor to remove + @return CRYPT_OK on success +*/ +int unregister_prng(const struct ltc_prng_descriptor *prng) +{ + int x; + + LTC_ARGCHK(prng != NULL); + + /* is it already registered? */ + LTC_MUTEX_LOCK(<c_prng_mutex); + for (x = 0; x < TAB_SIZE; x++) { + if (XMEMCMP(&prng_descriptor[x], prng, sizeof(struct ltc_prng_descriptor)) == 0) { + prng_descriptor[x].name = NULL; + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return CRYPT_OK; + } + } + LTC_MUTEX_UNLOCK(<c_prng_mutex); + return CRYPT_ERROR; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/error_to_string.c b/src/ltc/misc/error_to_string.c new file mode 100644 index 00000000..c3d08727 --- /dev/null +++ b/src/ltc/misc/error_to_string.c @@ -0,0 +1,80 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ + +#include "tomcrypt.h" + +/** + @file error_to_string.c + Convert error codes to ASCII strings, Tom St Denis +*/ + +static const char * const err_2_str[] = +{ + "CRYPT_OK", + "CRYPT_ERROR", + "Non-fatal 'no-operation' requested.", + + "Invalid keysize for block cipher.", + "Invalid number of rounds for block cipher.", + "Algorithm failed test vectors.", + + "Buffer overflow.", + "Invalid input packet.", + + "Invalid number of bits for a PRNG.", + "Error reading the PRNG.", + + "Invalid cipher specified.", + "Invalid hash specified.", + "Invalid PRNG specified.", + + "Out of memory.", + + "Invalid PK key or key type specified for function.", + "A private PK key is required.", + + "Invalid argument provided.", + "File Not Found", + + "Invalid PK type.", + + "An overflow of a value was detected/prevented.", + + "UNUSED1.", + "UNUSED2.", + + "Invalid sized parameter.", + + "Invalid size for prime.", + + "Invalid padding.", + + "Hash applied to too many bits.", +}; + +/** + Convert an LTC error code to ASCII + @param err The error code + @return A pointer to the ASCII NUL terminated string for the error or "Invalid error code." if the err code was not valid. +*/ +const char *error_to_string(int err) +{ + if (err < 0 || err >= (int)(sizeof(err_2_str)/sizeof(err_2_str[0]))) { + return "Invalid error code."; + } else { + return err_2_str[err]; + } +} + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/hkdf/hkdf.c b/src/ltc/misc/hkdf/hkdf.c new file mode 100644 index 00000000..c4d69d1d --- /dev/null +++ b/src/ltc/misc/hkdf/hkdf.c @@ -0,0 +1,142 @@ +#include <assert.h> +#include <stdio.h> +#include <stdlib.h> + +#include <tomcrypt.h> + +#ifdef LTC_HKDF + +/* This is mostly just a wrapper around hmac_memory */ +int hkdf_extract(int hash_idx, const unsigned char *salt, unsigned long saltlen, + const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long *outlen) +{ + /* libtomcrypt chokes on a zero length HMAC key, so we need to check for + that. HMAC specifies that keys shorter than the hash's blocksize are + 0 padded to the block size. HKDF specifies that a NULL salt is to be + substituted with a salt comprised of hashLen 0 bytes. HMAC's padding + means that in either case the HMAC is actually using a blocksize long + zero filled key. Unless blocksize < hashLen (which wouldn't make any + sense), we can use a single 0 byte as the HMAC key and still generate + valid results for HKDF. */ + if (salt == NULL || saltlen == 0) { + return hmac_memory(hash_idx, (const unsigned char *)"", 1, in, inlen, out, outlen); + } else { + return hmac_memory(hash_idx, salt, saltlen, in, inlen, out, outlen); + } +} + +int hkdf_expand(int hash_idx, const unsigned char *info, unsigned long infolen, + const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long outlen) +{ + unsigned long hashsize; + int err; + unsigned char N; + unsigned long Noutlen, outoff; + + unsigned char *T, *dat; + unsigned long Tlen, datlen; + + /* make sure hash descriptor is valid */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + hashsize = hash_descriptor[hash_idx].hashsize; + + /* RFC5869 parameter restrictions */ + if (inlen < hashsize || outlen > hashsize * 255) + return CRYPT_INVALID_ARG; + if (info == NULL && infolen != 0) + return CRYPT_INVALID_ARG; + LTC_ARGCHK(out != NULL); + + Tlen = hashsize + infolen + 1; + T = XMALLOC(Tlen); /* Replace with static buffer? */ + if (T == NULL) { + return CRYPT_MEM; + } + if (info != NULL) { + XMEMCPY(T + hashsize, info, infolen); + } + + /* HMAC data T(1) doesn't include a previous hash value */ + dat = T + hashsize; + datlen = Tlen - hashsize; + + N = 0; + outoff = 0; /* offset in out to write to */ + while (1) { /* an exit condition breaks mid-loop */ + Noutlen = MIN(hashsize, outlen - outoff); + T[Tlen - 1] = ++N; + if ((err = hmac_memory(hash_idx, in, inlen, dat, datlen, + out + outoff, &Noutlen)) != CRYPT_OK) { + zeromem(T, Tlen); + XFREE(T); + return err; + } + outoff += Noutlen; + + if (outoff >= outlen) /* loop exit condition */ + break; + + /* All subsequent HMAC data T(N) DOES include the previous hash value */ + XMEMCPY(T, out + hashsize * (N-1), hashsize); + if (N == 1) { + dat = T; + datlen = Tlen; + } + } + zeromem(T, Tlen); + XFREE(T); + return CRYPT_OK; +} + +/* all in one step */ +int hkdf(int hash_idx, const unsigned char *salt, unsigned long saltlen, + const unsigned char *info, unsigned long infolen, + const unsigned char *in, unsigned long inlen, + unsigned char *out, unsigned long outlen) +{ + unsigned long hashsize; + int err; + unsigned char *extracted; + + /* make sure hash descriptor is valid */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + hashsize = hash_descriptor[hash_idx].hashsize; + + extracted = XMALLOC(hashsize); /* replace with static buffer? */ + if (extracted == NULL) { + return CRYPT_MEM; + } + if ((err = hkdf_extract(hash_idx, salt, saltlen, in, inlen, extracted, &hashsize)) != 0) { + zeromem(extracted, hashsize); + XFREE(extracted); + return err; + } +#if 0 + { + int j; + printf("\nPRK: 0x"); + for(j=0; j < hashsize; j++) { + printf("%02x ", extracted[j]); + } + for(j=0; j < hashsize; j++) { + printf("%02x ", extracted[j]); + } + } +#endif + err = hkdf_expand(hash_idx, info, infolen, extracted, hashsize, out, outlen); + zeromem(extracted, hashsize); + XFREE(extracted); + return err; +} +#endif /* LTC_HKDF */ + + +/* vim: set ts=2 sw=2 et ai si: */ diff --git a/src/ltc/misc/mem_neq.c b/src/ltc/misc/mem_neq.c new file mode 100644 index 00000000..917b7583 --- /dev/null +++ b/src/ltc/misc/mem_neq.c @@ -0,0 +1,60 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file mem_neq.c + Compare two blocks of memory for inequality. + Steffen Jaeckel +*/ + +/** + Compare two blocks of memory for inequality. + + The usage is similar to that of standard memcmp, but you can only test + if the memory is equal or not - you can not determine by how much the + first different byte differs. + + @param a The first memory region + @param b The second memory region + @param len The length of the area to compare (octets) + + @return 0 when a and b are equal for len bytes, else they are not equal. +*/ +int mem_neq(const void *a, const void *b, size_t len) +{ + unsigned char ret = 0; + const unsigned char* pa; + const unsigned char* pb; + + LTC_ARGCHK(a != NULL); + LTC_ARGCHK(b != NULL); + + pa = a; + pb = b; + + while (len-- > 0) { + ret |= *pa ^ *pb; + ++pa; + ++pb; + } + + ret |= ret >> 4; + ret |= ret >> 2; + ret |= ret >> 1; + ret &= 1; + + return ret; +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/pk_get_oid.c b/src/ltc/misc/pk_get_oid.c new file mode 100644 index 00000000..8c083802 --- /dev/null +++ b/src/ltc/misc/pk_get_oid.c @@ -0,0 +1,57 @@ +/* LibTomCrypt, modular cryptographic library + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + */ +#include "tomcrypt.h" + +#ifdef LTC_DER +static const oid_st rsa_oid = { + { 1, 2, 840, 113549, 1, 1, 1 }, + 7, +}; + +static const oid_st dsa_oid = { + { 1, 2, 840, 10040, 4, 1 }, + 6, +}; + +static const oid_st ec_oid = { + { 1, 2, 840, 10045, 2, 1 }, + 6, +}; + +static const oid_st ec_primef = { + { 1, 2, 840, 10045, 1, 1 }, + 6, +}; + +/* + Returns the OID of the public key algorithm. + @return CRYPT_OK if valid +*/ +int pk_get_oid(int pk, oid_st *st) +{ + switch (pk) { + case PKA_RSA: + XMEMCPY(st, &rsa_oid, sizeof(*st)); + break; + case PKA_DSA: + XMEMCPY(st, &dsa_oid, sizeof(*st)); + break; + case PKA_EC: + XMEMCPY(st, &ec_oid, sizeof(*st)); + break; + case EC_PRIME_FIELD: + XMEMCPY(st, &ec_primef, sizeof(*st)); + break; + default: + return CRYPT_INVALID_ARG; + } + return CRYPT_OK; +} +#endif diff --git a/src/ltc/misc/pkcs5/pkcs_5_1.c b/src/ltc/misc/pkcs5/pkcs_5_1.c new file mode 100644 index 00000000..2ebdf2f7 --- /dev/null +++ b/src/ltc/misc/pkcs5/pkcs_5_1.c @@ -0,0 +1,189 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include <tomcrypt.h> + +/** + @file pkcs_5_1.c + PKCS #5, Algorithm #1, Tom St Denis +*/ +#ifdef LTC_PKCS_5 +/** + Execute PKCS #5 v1 in strict or OpenSSL EVP_BytesToKey()-compat mode. + + PKCS#5 v1 specifies that the output key length can be no larger than + the hash output length. OpenSSL unilaterally extended that by repeating + the hash process on a block-by-block basis for as long as needed to make + bigger keys. If you want to be compatible with KDF for e.g. "openssl enc", + you'll want that. + + If you want strict PKCS behavior, turn openssl_compat off. Or (more + likely), use one of the convenience functions below. + + @param password The password (or key) + @param password_len The length of the password (octet) + @param salt The salt (or nonce) which is 8 octets long + @param iteration_count The PKCS #5 v1 iteration count + @param hash_idx The index of the hash desired + @param out [out] The destination for this algorithm + @param outlen [in/out] The max size and resulting size of the algorithm output + @param openssl_compat [in] Whether or not to grow the key to the buffer size ala OpenSSL + @return CRYPT_OK if successful +*/ +static int _pkcs_5_alg1_common(const unsigned char *password, + unsigned long password_len, + const unsigned char *salt, + int iteration_count, int hash_idx, + unsigned char *out, unsigned long *outlen, + int openssl_compat) +{ + int err; + unsigned long x; + hash_state *md; + unsigned char *buf; + /* Storage vars in case we need to support > hashsize (OpenSSL compat) */ + unsigned long block = 0, iter; + /* How many bytes to put in the outbut buffer (convenience calc) */ + unsigned long outidx = 0, nb = 0; + + LTC_ARGCHK(password != NULL); + LTC_ARGCHK(salt != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* test hash IDX */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + /* allocate memory */ + md = XMALLOC(sizeof(hash_state)); + buf = XMALLOC(MAXBLOCKSIZE); + if (md == NULL || buf == NULL) { + if (md != NULL) { + XFREE(md); + } + if (buf != NULL) { + XFREE(buf); + } + return CRYPT_MEM; + } + + while(block * hash_descriptor[hash_idx].hashsize < *outlen) { + + /* hash initial (maybe previous hash) + password + salt */ + if ((err = hash_descriptor[hash_idx].init(md)) != CRYPT_OK) { + goto LBL_ERR; + } + /* in OpenSSL mode, we first hash the previous result for blocks 2-n */ + if (openssl_compat && block) { + if ((err = hash_descriptor[hash_idx].process(md, buf, hash_descriptor[hash_idx].hashsize)) != CRYPT_OK) { + goto LBL_ERR; + } + } + if ((err = hash_descriptor[hash_idx].process(md, password, password_len)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx].process(md, salt, 8)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hash_descriptor[hash_idx].done(md, buf)) != CRYPT_OK) { + goto LBL_ERR; + } + + iter = iteration_count; + while (--iter) { + /* code goes here. */ + x = MAXBLOCKSIZE; + if ((err = hash_memory(hash_idx, buf, hash_descriptor[hash_idx].hashsize, buf, &x)) != CRYPT_OK) { + goto LBL_ERR; + } + } + + /* limit the size of the copy to however many bytes we have left in + the output buffer (and how many bytes we have to copy) */ + outidx = block*hash_descriptor[hash_idx].hashsize; + nb = hash_descriptor[hash_idx].hashsize; + if(outidx+nb > *outlen) + nb = *outlen - outidx; + if(nb > 0) + XMEMCPY(out+outidx, buf, nb); + + block++; + if (!openssl_compat) + break; + } + /* In strict mode, we always return the hashsize, in compat we filled it + as much as was requested, so we leave it alone. */ + if(!openssl_compat) + *outlen = hash_descriptor[hash_idx].hashsize; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(buf, MAXBLOCKSIZE); + zeromem(md, sizeof(hash_state)); +#endif + + XFREE(buf); + XFREE(md); + + return err; +} + +/** + Execute PKCS #5 v1 - Strict mode (no OpenSSL-compatible extension) + @param password The password (or key) + @param password_len The length of the password (octet) + @param salt The salt (or nonce) which is 8 octets long + @param iteration_count The PKCS #5 v1 iteration count + @param hash_idx The index of the hash desired + @param out [out] The destination for this algorithm + @param outlen [in/out] The max size and resulting size of the algorithm output + @return CRYPT_OK if successful +*/ +int pkcs_5_alg1(const unsigned char *password, unsigned long password_len, + const unsigned char *salt, + int iteration_count, int hash_idx, + unsigned char *out, unsigned long *outlen) +{ + return _pkcs_5_alg1_common(password, password_len, salt, iteration_count, + hash_idx, out, outlen, 0); +} + +/** + Execute PKCS #5 v1 - OpenSSL-extension-compatible mode + + Use this one if you need to derive keys as "openssl enc" does by default. + OpenSSL (for better or worse), uses MD5 as the hash and iteration_count=1. + @param password The password (or key) + @param password_len The length of the password (octet) + @param salt The salt (or nonce) which is 8 octets long + @param iteration_count The PKCS #5 v1 iteration count + @param hash_idx The index of the hash desired + @param out [out] The destination for this algorithm + @param outlen [in/out] The max size and resulting size of the algorithm output + @return CRYPT_OK if successful +*/ +int pkcs_5_alg1_openssl(const unsigned char *password, + unsigned long password_len, + const unsigned char *salt, + int iteration_count, int hash_idx, + unsigned char *out, unsigned long *outlen) +{ + return _pkcs_5_alg1_common(password, password_len, salt, iteration_count, + hash_idx, out, outlen, 1); +} + +#endif + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/pkcs5/pkcs_5_2.c b/src/ltc/misc/pkcs5/pkcs_5_2.c new file mode 100644 index 00000000..9b9b78a6 --- /dev/null +++ b/src/ltc/misc/pkcs5/pkcs_5_2.c @@ -0,0 +1,129 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include <tomcrypt.h> + +/** + @file pkcs_5_2.c + PKCS #5, Algorithm #2, Tom St Denis +*/ +#ifdef LTC_PKCS_5 + +/** + Execute PKCS #5 v2 + @param password The input password (or key) + @param password_len The length of the password (octets) + @param salt The salt (or nonce) + @param salt_len The length of the salt (octets) + @param iteration_count # of iterations desired for PKCS #5 v2 [read specs for more] + @param hash_idx The index of the hash desired + @param out [out] The destination for this algorithm + @param outlen [in/out] The max size and resulting size of the algorithm output + @return CRYPT_OK if successful +*/ +int pkcs_5_alg2(const unsigned char *password, unsigned long password_len, + const unsigned char *salt, unsigned long salt_len, + int iteration_count, int hash_idx, + unsigned char *out, unsigned long *outlen) +{ + int err, itts; + ulong32 blkno; + unsigned long stored, left, x, y; + unsigned char *buf[2]; + hmac_state *hmac; + + LTC_ARGCHK(password != NULL); + LTC_ARGCHK(salt != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + /* test hash IDX */ + if ((err = hash_is_valid(hash_idx)) != CRYPT_OK) { + return err; + } + + buf[0] = XMALLOC(MAXBLOCKSIZE * 2); + hmac = XMALLOC(sizeof(hmac_state)); + if (hmac == NULL || buf[0] == NULL) { + if (hmac != NULL) { + XFREE(hmac); + } + if (buf[0] != NULL) { + XFREE(buf[0]); + } + return CRYPT_MEM; + } + /* buf[1] points to the second block of MAXBLOCKSIZE bytes */ + buf[1] = buf[0] + MAXBLOCKSIZE; + + left = *outlen; + blkno = 1; + stored = 0; + while (left != 0) { + /* process block number blkno */ + zeromem(buf[0], MAXBLOCKSIZE*2); + + /* store current block number and increment for next pass */ + STORE32H(blkno, buf[1]); + ++blkno; + + /* get PRF(P, S||int(blkno)) */ + if ((err = hmac_init(hmac, hash_idx, password, password_len)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hmac_process(hmac, salt, salt_len)) != CRYPT_OK) { + goto LBL_ERR; + } + if ((err = hmac_process(hmac, buf[1], 4)) != CRYPT_OK) { + goto LBL_ERR; + } + x = MAXBLOCKSIZE; + if ((err = hmac_done(hmac, buf[0], &x)) != CRYPT_OK) { + goto LBL_ERR; + } + + /* now compute repeated and XOR it in buf[1] */ + XMEMCPY(buf[1], buf[0], x); + for (itts = 1; itts < iteration_count; ++itts) { + if ((err = hmac_memory(hash_idx, password, password_len, buf[0], x, buf[0], &x)) != CRYPT_OK) { + goto LBL_ERR; + } + for (y = 0; y < x; y++) { + buf[1][y] ^= buf[0][y]; + } + } + + /* now emit upto x bytes of buf[1] to output */ + for (y = 0; y < x && left != 0; ++y) { + out[stored++] = buf[1][y]; + --left; + } + } + *outlen = stored; + + err = CRYPT_OK; +LBL_ERR: +#ifdef LTC_CLEAN_STACK + zeromem(buf[0], MAXBLOCKSIZE*2); + zeromem(hmac, sizeof(hmac_state)); +#endif + + XFREE(hmac); + XFREE(buf[0]); + + return err; +} + +#endif + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ diff --git a/src/ltc/misc/zeromem.c b/src/ltc/misc/zeromem.c new file mode 100644 index 00000000..3564cc1c --- /dev/null +++ b/src/ltc/misc/zeromem.c @@ -0,0 +1,34 @@ +/* LibTomCrypt, modular cryptographic library -- Tom St Denis + * + * LibTomCrypt is a library that provides various cryptographic + * algorithms in a highly modular and flexible manner. + * + * The library is free for all purposes without any express + * guarantee it works. + * + * Tom St Denis, tomstdenis@gmail.com, http://libtom.org + */ +#include "tomcrypt.h" + +/** + @file zeromem.c + Zero a block of memory, Tom St Denis +*/ + +/** + Zero a block of memory + @param out The destination of the area to zero + @param outlen The length of the area to zero (octets) +*/ +void zeromem(volatile void *out, size_t outlen) +{ + volatile char *mem = out; + LTC_ARGCHKVD(out != NULL); + while (outlen-- > 0) { + *mem++ = '\0'; + } +} + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ |