X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=threefish512_enc.c;h=620276fed44a24cf2174c7eae8b482e12d0707fe;hb=ff9f1b74e757f2f67b11c51f65b12fffaa02e18d;hp=fb044b59e2c57a24669a3ce29464cc804267ad08;hpb=d1d3ca64870a4cc4ee0659db7b4387e1dd51549f;p=avr-crypto-lib.git diff --git a/threefish512_enc.c b/threefish512_enc.c index fb044b5..620276f 100644 --- a/threefish512_enc.c +++ b/threefish512_enc.c @@ -68,13 +68,17 @@ void permute_inv8(void* data){ void threefish512_init(const void* key, const void* tweak, threefish512_ctx_t* ctx){ memcpy(ctx->k, key, 8*8); - memcpy(ctx->t, tweak, 2*8); + if(tweak){ + memcpy(ctx->t, tweak, 2*8); + ctx->t[2] = T(0) ^ T(1); + }else{ + memset(ctx->t, 0, 3*8); + } uint8_t i; ctx->k[8] = THREEFISH_KEY_CONST; for(i=0; i<8; ++i){ ctx->k[8] ^= K(i); } - ctx->t[2] = T(0) ^ T(1); } static