static void rmd160_final( void *context ) { RMD160_CONTEXT *hd = context; u32 t, msb, lsb; byte *p; unsigned int burn; _gcry_md_block_write(hd, NULL, 0); /* flush */; t = hd->bctx.nblocks; /* multiply by 64 to make a byte count */ lsb = t << 6; msb = t >> 26; /* add the count */ t = lsb; if( (lsb += hd->bctx.count) < t ) msb++; /* multiply by 8 to make a bit count */ t = lsb; lsb <<= 3; msb <<= 3; msb |= t >> 29; if( hd->bctx.count < 56 ) /* enough room */ { hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad */ while( hd->bctx.count < 56 ) hd->bctx.buf[hd->bctx.count++] = 0; /* pad */ } else /* need one extra block */ { hd->bctx.buf[hd->bctx.count++] = 0x80; /* pad character */ while( hd->bctx.count < 64 ) hd->bctx.buf[hd->bctx.count++] = 0; _gcry_md_block_write(hd, NULL, 0); /* flush */; memset(hd->bctx.buf, 0, 56 ); /* fill next block with zeroes */ } /* append the 64 bit count */ buf_put_le32(hd->bctx.buf + 56, lsb); buf_put_le32(hd->bctx.buf + 60, msb); burn = transform( hd, hd->bctx.buf ); _gcry_burn_stack (burn); p = hd->bctx.buf; #define X(a) do { *(u32*)p = le_bswap32(hd->h##a) ; p += 4; } while(0) X(0); X(1); X(2); X(3); X(4); #undef X }
static void serpent_decrypt_internal (serpent_context_t *context, const byte *input, byte *output) { serpent_block_t b, b_next; int round = ROUNDS; b_next[0] = buf_get_le32 (input + 0); b_next[1] = buf_get_le32 (input + 4); b_next[2] = buf_get_le32 (input + 8); b_next[3] = buf_get_le32 (input + 12); ROUND_FIRST_INVERSE (7, context->keys, b_next, b); ROUND_INVERSE (6, context->keys, b, b_next); ROUND_INVERSE (5, context->keys, b, b_next); ROUND_INVERSE (4, context->keys, b, b_next); ROUND_INVERSE (3, context->keys, b, b_next); ROUND_INVERSE (2, context->keys, b, b_next); ROUND_INVERSE (1, context->keys, b, b_next); ROUND_INVERSE (0, context->keys, b, b_next); ROUND_INVERSE (7, context->keys, b, b_next); ROUND_INVERSE (6, context->keys, b, b_next); ROUND_INVERSE (5, context->keys, b, b_next); ROUND_INVERSE (4, context->keys, b, b_next); ROUND_INVERSE (3, context->keys, b, b_next); ROUND_INVERSE (2, context->keys, b, b_next); ROUND_INVERSE (1, context->keys, b, b_next); ROUND_INVERSE (0, context->keys, b, b_next); ROUND_INVERSE (7, context->keys, b, b_next); ROUND_INVERSE (6, context->keys, b, b_next); ROUND_INVERSE (5, context->keys, b, b_next); ROUND_INVERSE (4, context->keys, b, b_next); ROUND_INVERSE (3, context->keys, b, b_next); ROUND_INVERSE (2, context->keys, b, b_next); ROUND_INVERSE (1, context->keys, b, b_next); ROUND_INVERSE (0, context->keys, b, b_next); ROUND_INVERSE (7, context->keys, b, b_next); ROUND_INVERSE (6, context->keys, b, b_next); ROUND_INVERSE (5, context->keys, b, b_next); ROUND_INVERSE (4, context->keys, b, b_next); ROUND_INVERSE (3, context->keys, b, b_next); ROUND_INVERSE (2, context->keys, b, b_next); ROUND_INVERSE (1, context->keys, b, b_next); ROUND_INVERSE (0, context->keys, b, b_next); buf_put_le32 (output + 0, b_next[0]); buf_put_le32 (output + 4, b_next[1]); buf_put_le32 (output + 8, b_next[2]); buf_put_le32 (output + 12, b_next[3]); }
static void serpent_encrypt_internal (serpent_context_t *context, const byte *input, byte *output) { serpent_block_t b, b_next; int round = 0; b[0] = buf_get_le32 (input + 0); b[1] = buf_get_le32 (input + 4); b[2] = buf_get_le32 (input + 8); b[3] = buf_get_le32 (input + 12); ROUND (0, context->keys, b, b_next); ROUND (1, context->keys, b, b_next); ROUND (2, context->keys, b, b_next); ROUND (3, context->keys, b, b_next); ROUND (4, context->keys, b, b_next); ROUND (5, context->keys, b, b_next); ROUND (6, context->keys, b, b_next); ROUND (7, context->keys, b, b_next); ROUND (0, context->keys, b, b_next); ROUND (1, context->keys, b, b_next); ROUND (2, context->keys, b, b_next); ROUND (3, context->keys, b, b_next); ROUND (4, context->keys, b, b_next); ROUND (5, context->keys, b, b_next); ROUND (6, context->keys, b, b_next); ROUND (7, context->keys, b, b_next); ROUND (0, context->keys, b, b_next); ROUND (1, context->keys, b, b_next); ROUND (2, context->keys, b, b_next); ROUND (3, context->keys, b, b_next); ROUND (4, context->keys, b, b_next); ROUND (5, context->keys, b, b_next); ROUND (6, context->keys, b, b_next); ROUND (7, context->keys, b, b_next); ROUND (0, context->keys, b, b_next); ROUND (1, context->keys, b, b_next); ROUND (2, context->keys, b, b_next); ROUND (3, context->keys, b, b_next); ROUND (4, context->keys, b, b_next); ROUND (5, context->keys, b, b_next); ROUND (6, context->keys, b, b_next); ROUND_LAST (7, context->keys, b, b_next); buf_put_le32 (output + 0, b_next[0]); buf_put_le32 (output + 4, b_next[1]); buf_put_le32 (output + 8, b_next[2]); buf_put_le32 (output + 12, b_next[3]); }