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Diffstat (limited to 'libtom-src/hashes/helper/hash_file.c')
-rw-r--r-- | libtom-src/hashes/helper/hash_file.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libtom-src/hashes/helper/hash_file.c b/libtom-src/hashes/helper/hash_file.c new file mode 100644 index 00000000..4c184d83 --- /dev/null +++ b/libtom-src/hashes/helper/hash_file.c @@ -0,0 +1,55 @@ +/* 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" + +#ifndef LTC_NO_FILE +/** + @file hash_file.c + Hash a file, Tom St Denis +*/ + +/** + @param hash The index of the hash desired + @param fname The name of the file you wish to hash + @param out [out] The destination of the digest + @param outlen [in/out] The max size and resulting size of the message digest + @result CRYPT_OK if successful +*/ +int hash_file(int hash, const char *fname, unsigned char *out, unsigned long *outlen) +{ + FILE *in; + int err; + LTC_ARGCHK(fname != NULL); + LTC_ARGCHK(out != NULL); + LTC_ARGCHK(outlen != NULL); + + if ((err = hash_is_valid(hash)) != CRYPT_OK) { + return err; + } + + in = fopen(fname, "rb"); + if (in == NULL) { + return CRYPT_FILE_NOTFOUND; + } + + err = hash_filehandle(hash, in, out, outlen); + if (fclose(in) != 0) { + return CRYPT_ERROR; + } + + return err; +} +#endif /* #ifndef LTC_NO_FILE */ + + +/* $Source$ */ +/* $Revision$ */ +/* $Date$ */ |