Mercurial > dropbear
view libtomcrypt/src/mac/blake2/blake2smac_file.c @ 1693:f9ad4d39e388
Bring back -Werror and improve travis tests
author | Matt Johnston <matt@ucc.asn.au> |
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date | Tue, 26 May 2020 23:53:50 +0800 |
parents | 6dba84798cd5 |
children | e9dba7abd939 |
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/* 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. */ #include "tomcrypt.h" #ifdef LTC_BLAKE2SMAC /** BLAKE2S MAC a file @param fname The name of the file you wish to BLAKE2S MAC @param key The secret key @param keylen The length of the secret key @param mac [out] The BLAKE2S MAC authentication tag @param maclen [in/out] The max size and resulting size of the authentication tag @return CRYPT_OK if successful, CRYPT_NOP if file support has been disabled */ int blake2smac_file(const char *fname, const unsigned char *key, unsigned long keylen, unsigned char *mac, unsigned long *maclen) { #ifdef LTC_NO_FILE return CRYPT_NOP; #else blake2smac_state st; FILE *in; unsigned char *buf; size_t x; int err; LTC_ARGCHK(fname != NULL); LTC_ARGCHK(key != NULL); LTC_ARGCHK(mac != NULL); LTC_ARGCHK(maclen != NULL); if ((buf = XMALLOC(LTC_FILE_READ_BUFSIZE)) == NULL) { return CRYPT_MEM; } if ((err = blake2smac_init(&st, *maclen, key, keylen)) != CRYPT_OK) { goto LBL_ERR; } in = fopen(fname, "rb"); if (in == NULL) { err = CRYPT_FILE_NOTFOUND; goto LBL_ERR; } do { x = fread(buf, 1, LTC_FILE_READ_BUFSIZE, in); if ((err = blake2smac_process(&st, buf, (unsigned long)x)) != CRYPT_OK) { fclose(in); goto LBL_CLEANBUF; } } while (x == LTC_FILE_READ_BUFSIZE); if (fclose(in) != 0) { err = CRYPT_ERROR; goto LBL_CLEANBUF; } err = blake2smac_done(&st, mac, maclen); LBL_CLEANBUF: zeromem(buf, LTC_FILE_READ_BUFSIZE); LBL_ERR: #ifdef LTC_CLEAN_STACK zeromem(&st, sizeof(blake2smac_state)); #endif XFREE(buf); return err; #endif } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */