X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fencauth%2Focb%2Focb_encrypt.c;fp=libtomcrypt%2Fsrc%2Fencauth%2Focb%2Focb_encrypt.c;h=0000000000000000000000000000000000000000;hp=aad76a08b8096ac3f4d90e330b45ca1d9a99a0cd;hb=a670d5d3211446a123f1af646c867ee4aabadc49;hpb=72b60d5f77676b6b500d58bae81a27923fa1bee7 diff --git a/libtomcrypt/src/encauth/ocb/ocb_encrypt.c b/libtomcrypt/src/encauth/ocb/ocb_encrypt.c deleted file mode 100644 index aad76a0..0000000 --- a/libtomcrypt/src/encauth/ocb/ocb_encrypt.c +++ /dev/null @@ -1,70 +0,0 @@ -/* 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. - */ - -/** - @file ocb_encrypt.c - OCB implementation, encrypt data, by Tom St Denis -*/ -#include "tomcrypt.h" - -#ifdef LTC_OCB_MODE - -/** - Encrypt a block of data with OCB. - @param ocb The OCB state - @param pt The plaintext (length of the block size of the block cipher) - @param ct [out] The ciphertext (same size as the pt) - @return CRYPT_OK if successful -*/ -int ocb_encrypt(ocb_state *ocb, const unsigned char *pt, unsigned char *ct) -{ - unsigned char Z[MAXBLOCKSIZE], tmp[MAXBLOCKSIZE]; - int err, x; - - LTC_ARGCHK(ocb != NULL); - LTC_ARGCHK(pt != NULL); - LTC_ARGCHK(ct != NULL); - if ((err = cipher_is_valid(ocb->cipher)) != CRYPT_OK) { - return err; - } - if (ocb->block_len != cipher_descriptor[ocb->cipher].block_length) { - return CRYPT_INVALID_ARG; - } - - /* compute checksum */ - for (x = 0; x < ocb->block_len; x++) { - ocb->checksum[x] ^= pt[x]; - } - - /* Get Z[i] value */ - ocb_shift_xor(ocb, Z); - - /* xor pt in, encrypt, xor Z out */ - for (x = 0; x < ocb->block_len; x++) { - tmp[x] = pt[x] ^ Z[x]; - } - if ((err = cipher_descriptor[ocb->cipher].ecb_encrypt(tmp, ct, &ocb->key)) != CRYPT_OK) { - return err; - } - for (x = 0; x < ocb->block_len; x++) { - ct[x] ^= Z[x]; - } - -#ifdef LTC_CLEAN_STACK - zeromem(Z, sizeof(Z)); - zeromem(tmp, sizeof(tmp)); -#endif - return CRYPT_OK; -} - -#endif - -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */