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MODULE = CryptX PACKAGE = Crypt::KeyDerivation
SV *
_pkcs_5_alg1(SV * password, SV * salt, int iteration_count, char * hash_name, unsigned long output_len)
CODE:
{
/*
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)
*/
int rv, id;
unsigned char *output;
unsigned char *password_ptr=NULL;
STRLEN password_len=0;
unsigned char *salt_ptr=NULL;
STRLEN salt_len=0;
id = find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
password_ptr = (unsigned char *)SvPVbyte(password, password_len);
salt_ptr = (unsigned char *)SvPVbyte(salt, salt_len);
if (salt_len < 8) croak("FATAL: salt_len has to be 8");
RETVAL = NEWSV(0, output_len);
SvPOK_only(RETVAL);
SvCUR_set(RETVAL, output_len);
output = (unsigned char *)SvPVX(RETVAL);
rv = pkcs_5_alg1(password_ptr, (unsigned long)password_len, salt_ptr, iteration_count, id, output, &output_len);
if (rv != CRYPT_OK) {
SvREFCNT_dec(RETVAL);
croak("FATAL: pkcs_5_alg1 process failed: %s", error_to_string(rv));
}
SvCUR_set(RETVAL, output_len);
}
OUTPUT:
RETVAL
SV *
_pkcs_5_alg2(SV * password, SV * salt, int iteration_count, char * hash_name, unsigned long output_len)
CODE:
{
/*
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 rv, id;
unsigned char *output;
unsigned char *password_ptr=NULL;
STRLEN password_len=0;
unsigned char *salt_ptr=NULL;
STRLEN salt_len=0;
id = find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
password_ptr = (unsigned char *)SvPVbyte(password, password_len);
salt_ptr = (unsigned char *)SvPVbyte(salt, salt_len);
RETVAL = NEWSV(0, output_len);
SvPOK_only(RETVAL);
SvCUR_set(RETVAL, output_len);
output = (unsigned char *)SvPVX(RETVAL);
rv = pkcs_5_alg2(password_ptr, (unsigned long)password_len, salt_ptr, (unsigned long)salt_len, iteration_count, id, output, &output_len);
if (rv != CRYPT_OK) {
SvREFCNT_dec(RETVAL);
croak("FATAL: pkcs_5_alg2 process failed: %s", error_to_string(rv));
}
SvCUR_set(RETVAL, output_len);
}
OUTPUT:
RETVAL
SV *
_hkdf_extract(char * hash_name, SV * salt, SV * in)
CODE:
{
/*
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)
*/
int rv, id;
unsigned char output[MAXBLOCKSIZE];
unsigned long output_len;
unsigned char *in_ptr=NULL;
STRLEN in_len=0;
unsigned char *salt_ptr=NULL;
STRLEN salt_len=0;
id = find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
in_ptr = (unsigned char *)SvPVbyte(in, in_len);
salt_ptr = (unsigned char *)SvPVbyte(salt, salt_len);
output_len = sizeof(output);
rv = hkdf_extract(id, salt_ptr, (unsigned long)salt_len, in_ptr, (unsigned long)in_len, output, &output_len);
if (rv != CRYPT_OK) croak("FATAL: hkdf_extract process failed: %s", error_to_string(rv));
RETVAL = newSVpvn((char *)output, output_len);
}
OUTPUT:
RETVAL
SV *
_hkdf_expand(char * hash_name, SV * info, SV * in, unsigned long output_len)
CODE:
{
/*
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)
*/
int rv, id;
unsigned char *output;
unsigned char *in_ptr=NULL;
STRLEN in_len=0;
unsigned char *info_ptr=NULL;
STRLEN info_len=0;
id = find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
in_ptr = (unsigned char *)SvPVbyte(in, in_len);
info_ptr = (unsigned char *)SvPVbyte(info, info_len);
RETVAL = NEWSV(0, output_len);
SvPOK_only(RETVAL);
SvCUR_set(RETVAL, output_len);
output = (unsigned char *)SvPVX(RETVAL);
rv = hkdf_expand(id, info_ptr, (unsigned long)info_len, in_ptr, (unsigned long)in_len, output, output_len);
if (rv != CRYPT_OK) {
SvREFCNT_dec(RETVAL);
croak("FATAL: hkdf_expand process failed: %s", error_to_string(rv));
}
SvCUR_set(RETVAL, output_len);
}
OUTPUT:
RETVAL
SV *
_hkdf(char * hash_name, SV * salt, SV * info, SV * in, unsigned long output_len)
CODE:
{
/*
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)
*/
int rv, id;
unsigned char *output;
unsigned char *in_ptr=NULL;
STRLEN in_len=0;
unsigned char *info_ptr=NULL;
STRLEN info_len=0;
unsigned char *salt_ptr=NULL;
STRLEN salt_len=0;
id = find_hash(hash_name);
if (id == -1) croak("FATAL: find_hash failed for '%s'", hash_name);
in_ptr = (unsigned char *)SvPVbyte(in, in_len);
info_ptr = (unsigned char *)SvPVbyte(info, info_len);
salt_ptr = (unsigned char *)SvPVbyte(salt, salt_len);
RETVAL = NEWSV(0, output_len);
SvPOK_only(RETVAL);
SvCUR_set(RETVAL, output_len);
output = (unsigned char *)SvPVX(RETVAL);
rv = hkdf(id, salt_ptr, (unsigned long)salt_len, info_ptr, (unsigned long)info_len, in_ptr, (unsigned long)in_len, output, output_len);
if (rv != CRYPT_OK) {
SvREFCNT_dec(RETVAL);
croak("FATAL: hkdf_expand process failed: %s", error_to_string(rv));
}
SvCUR_set(RETVAL, output_len);
}
OUTPUT:
RETVAL
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