X-Git-Url: https://pd.if.org/git/?p=zpackage;a=blobdiff_plain;f=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_setiv.c;fp=libtomcrypt%2Fsrc%2Fmodes%2Flrw%2Flrw_setiv.c;h=0000000000000000000000000000000000000000;hp=5c04157a60bdd90e99413caa3ca9247e2527d3c1;hb=d6319f7ea0a76de91bc01d9734d235b494c40198;hpb=5299b2ad7c4ba7a82ee1bcb1953663f63e8e9a14 diff --git a/libtomcrypt/src/modes/lrw/lrw_setiv.c b/libtomcrypt/src/modes/lrw/lrw_setiv.c deleted file mode 100644 index 5c04157..0000000 --- a/libtomcrypt/src/modes/lrw/lrw_setiv.c +++ /dev/null @@ -1,77 +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. - */ -#include "tomcrypt.h" - -/** - @file lrw_setiv.c - LRW_MODE implementation, Set the current IV, Tom St Denis -*/ - -#ifdef LTC_LRW_MODE - -/** - Set the IV for LRW - @param IV The IV, must be 16 octets - @param len Length ... must be 16 :-) - @param lrw The LRW state to update - @return CRYPT_OK if successful -*/ -int lrw_setiv(const unsigned char *IV, unsigned long len, symmetric_LRW *lrw) -{ - int err; -#ifdef LTC_LRW_TABLES - unsigned char T[16]; - int x, y; -#endif - LTC_ARGCHK(IV != NULL); - LTC_ARGCHK(lrw != NULL); - - if (len != 16) { - return CRYPT_INVALID_ARG; - } - - if ((err = cipher_is_valid(lrw->cipher)) != CRYPT_OK) { - return err; - } - - /* copy the IV */ - XMEMCPY(lrw->IV, IV, 16); - - /* check if we have to actually do work */ - if (cipher_descriptor[lrw->cipher].accel_lrw_encrypt != NULL && cipher_descriptor[lrw->cipher].accel_lrw_decrypt != NULL) { - /* we have accelerators, let's bail since they don't use lrw->pad anyways */ - return CRYPT_OK; - } - -#ifdef LTC_LRW_TABLES - XMEMCPY(T, &lrw->PC[0][IV[0]][0], 16); - for (x = 1; x < 16; x++) { -#ifdef LTC_FAST - for (y = 0; y < 16; y += sizeof(LTC_FAST_TYPE)) { - *(LTC_FAST_TYPE_PTR_CAST(T + y)) ^= *(LTC_FAST_TYPE_PTR_CAST(&lrw->PC[x][IV[x]][y])); - } -#else - for (y = 0; y < 16; y++) { - T[y] ^= lrw->PC[x][IV[x]][y]; - } -#endif - } - XMEMCPY(lrw->pad, T, 16); -#else - gcm_gf_mult(lrw->tweak, IV, lrw->pad); -#endif - - return CRYPT_OK; -} - - -#endif -/* ref: $Format:%D$ */ -/* git commit: $Format:%H$ */ -/* commit time: $Format:%ai$ */