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Niels Möller authored
config.h. Rev: src/nettle/ChangeLog:1.195 Rev: src/nettle/aes-decrypt-table.c:1.4 Rev: src/nettle/aes-decrypt.c:1.5 Rev: src/nettle/aes-encrypt-table.c:1.4 Rev: src/nettle/aes-encrypt.c:1.5 Rev: src/nettle/aes-meta.c:1.3 Rev: src/nettle/aes-set-decrypt-key.c:1.2 Rev: src/nettle/aes-set-encrypt-key.c:1.2 Rev: src/nettle/aes.c:1.12 Rev: src/nettle/aesdata.c:1.2 Rev: src/nettle/arcfour-meta.c:1.2 Rev: src/nettle/arcfour.c:1.3 Rev: src/nettle/base16-decode.c:1.2 Rev: src/nettle/base16-encode.c:1.2 Rev: src/nettle/base16-meta.c:1.3 Rev: src/nettle/base64-decode.c:1.5 Rev: src/nettle/base64-encode.c:1.3 Rev: src/nettle/base64-meta.c:1.4 Rev: src/nettle/bignum-random.c:1.3 Rev: src/nettle/bignum.c:1.7 Rev: src/nettle/blowfish.c:1.4 Rev: src/nettle/buffer-init.c:1.3 Rev: src/nettle/buffer.c:1.8 Rev: src/nettle/cast128-meta.c:1.3 Rev: src/nettle/cast128.c:1.4 Rev: src/nettle/cbc.c:1.6 Rev: src/nettle/des-compat.c:1.10 Rev: src/nettle/des.c:1.7 Rev: src/nettle/des3.c:1.2 Rev: src/nettle/dsa-keygen.c:1.6 Rev: src/nettle/dsa-sign.c:1.7 Rev: src/nettle/dsa-verify.c:1.4 Rev: src/nettle/dsa.c:1.5 Rev: src/nettle/examples/io.c:1.4 Rev: src/nettle/examples/nettle-benchmark.c:1.8 Rev: src/nettle/examples/nettle-openssl.c:1.2 Rev: src/nettle/examples/rsa-keygen.c:1.10 Rev: src/nettle/examples/rsa-sign.c:1.5 Rev: src/nettle/examples/rsa-verify.c:1.4 Rev: src/nettle/hmac-md5.c:1.5 Rev: src/nettle/hmac-sha1.c:1.2 Rev: src/nettle/hmac-sha256.c:1.2 Rev: src/nettle/hmac.c:1.4 Rev: src/nettle/knuth-lfib.c:1.2 Rev: src/nettle/md5-compat.c:1.3 Rev: src/nettle/md5-meta.c:1.2 Rev: src/nettle/md5.c:1.6 Rev: src/nettle/memxor.c:1.2 Rev: src/nettle/nettle-internal.c:1.3 Rev: src/nettle/pgp-encode.c:1.4 Rev: src/nettle/pkcs1-rsa-md5.c:1.2 Rev: src/nettle/pkcs1-rsa-sha1.c:1.2 Rev: src/nettle/pkcs1.c:1.2 Rev: src/nettle/realloc.c:1.3 Rev: src/nettle/rsa-compat.c:1.8 Rev: src/nettle/rsa-decrypt.c:1.4 Rev: src/nettle/rsa-encrypt.c:1.5 Rev: src/nettle/rsa-keygen.c:1.5 Rev: src/nettle/rsa-md5-sign.c:1.2 Rev: src/nettle/rsa-md5-verify.c:1.2 Rev: src/nettle/rsa-sha1-sign.c:1.2 Rev: src/nettle/rsa-sha1-verify.c:1.2 Rev: src/nettle/rsa-sign.c:1.3 Rev: src/nettle/rsa-verify.c:1.2 Rev: src/nettle/rsa.c:1.12 Rev: src/nettle/rsa2openpgp.c:1.2 Rev: src/nettle/rsa2sexp.c:1.7 Rev: src/nettle/serpent-meta.c:1.2 Rev: src/nettle/serpent.c:1.4 Rev: src/nettle/sexp-format.c:1.9 Rev: src/nettle/sexp-transport-format.c:1.2 Rev: src/nettle/sexp-transport.c:1.4 Rev: src/nettle/sexp.c:1.14 Rev: src/nettle/sexp2bignum.c:1.5 Rev: src/nettle/sexp2dsa.c:1.4 Rev: src/nettle/sexp2rsa.c:1.11 Rev: src/nettle/sha1-meta.c:1.2 Rev: src/nettle/sha1.c:1.8 Rev: src/nettle/sha256-meta.c:1.2 Rev: src/nettle/sha256.c:1.3 Rev: src/nettle/tools/input.c:1.2 Rev: src/nettle/tools/misc.c:1.2 Rev: src/nettle/tools/output.c:1.3 Rev: src/nettle/tools/parse.c:1.2 Rev: src/nettle/tools/sexp-conv.c:1.14 Rev: src/nettle/twofish-meta.c:1.2 Rev: src/nettle/twofish.c:1.6 Rev: src/nettle/yarrow256.c:1.17 Rev: src/nettle/yarrow_key_event.c:1.4
Niels Möller authoredconfig.h. Rev: src/nettle/ChangeLog:1.195 Rev: src/nettle/aes-decrypt-table.c:1.4 Rev: src/nettle/aes-decrypt.c:1.5 Rev: src/nettle/aes-encrypt-table.c:1.4 Rev: src/nettle/aes-encrypt.c:1.5 Rev: src/nettle/aes-meta.c:1.3 Rev: src/nettle/aes-set-decrypt-key.c:1.2 Rev: src/nettle/aes-set-encrypt-key.c:1.2 Rev: src/nettle/aes.c:1.12 Rev: src/nettle/aesdata.c:1.2 Rev: src/nettle/arcfour-meta.c:1.2 Rev: src/nettle/arcfour.c:1.3 Rev: src/nettle/base16-decode.c:1.2 Rev: src/nettle/base16-encode.c:1.2 Rev: src/nettle/base16-meta.c:1.3 Rev: src/nettle/base64-decode.c:1.5 Rev: src/nettle/base64-encode.c:1.3 Rev: src/nettle/base64-meta.c:1.4 Rev: src/nettle/bignum-random.c:1.3 Rev: src/nettle/bignum.c:1.7 Rev: src/nettle/blowfish.c:1.4 Rev: src/nettle/buffer-init.c:1.3 Rev: src/nettle/buffer.c:1.8 Rev: src/nettle/cast128-meta.c:1.3 Rev: src/nettle/cast128.c:1.4 Rev: src/nettle/cbc.c:1.6 Rev: src/nettle/des-compat.c:1.10 Rev: src/nettle/des.c:1.7 Rev: src/nettle/des3.c:1.2 Rev: src/nettle/dsa-keygen.c:1.6 Rev: src/nettle/dsa-sign.c:1.7 Rev: src/nettle/dsa-verify.c:1.4 Rev: src/nettle/dsa.c:1.5 Rev: src/nettle/examples/io.c:1.4 Rev: src/nettle/examples/nettle-benchmark.c:1.8 Rev: src/nettle/examples/nettle-openssl.c:1.2 Rev: src/nettle/examples/rsa-keygen.c:1.10 Rev: src/nettle/examples/rsa-sign.c:1.5 Rev: src/nettle/examples/rsa-verify.c:1.4 Rev: src/nettle/hmac-md5.c:1.5 Rev: src/nettle/hmac-sha1.c:1.2 Rev: src/nettle/hmac-sha256.c:1.2 Rev: src/nettle/hmac.c:1.4 Rev: src/nettle/knuth-lfib.c:1.2 Rev: src/nettle/md5-compat.c:1.3 Rev: src/nettle/md5-meta.c:1.2 Rev: src/nettle/md5.c:1.6 Rev: src/nettle/memxor.c:1.2 Rev: src/nettle/nettle-internal.c:1.3 Rev: src/nettle/pgp-encode.c:1.4 Rev: src/nettle/pkcs1-rsa-md5.c:1.2 Rev: src/nettle/pkcs1-rsa-sha1.c:1.2 Rev: src/nettle/pkcs1.c:1.2 Rev: src/nettle/realloc.c:1.3 Rev: src/nettle/rsa-compat.c:1.8 Rev: src/nettle/rsa-decrypt.c:1.4 Rev: src/nettle/rsa-encrypt.c:1.5 Rev: src/nettle/rsa-keygen.c:1.5 Rev: src/nettle/rsa-md5-sign.c:1.2 Rev: src/nettle/rsa-md5-verify.c:1.2 Rev: src/nettle/rsa-sha1-sign.c:1.2 Rev: src/nettle/rsa-sha1-verify.c:1.2 Rev: src/nettle/rsa-sign.c:1.3 Rev: src/nettle/rsa-verify.c:1.2 Rev: src/nettle/rsa.c:1.12 Rev: src/nettle/rsa2openpgp.c:1.2 Rev: src/nettle/rsa2sexp.c:1.7 Rev: src/nettle/serpent-meta.c:1.2 Rev: src/nettle/serpent.c:1.4 Rev: src/nettle/sexp-format.c:1.9 Rev: src/nettle/sexp-transport-format.c:1.2 Rev: src/nettle/sexp-transport.c:1.4 Rev: src/nettle/sexp.c:1.14 Rev: src/nettle/sexp2bignum.c:1.5 Rev: src/nettle/sexp2dsa.c:1.4 Rev: src/nettle/sexp2rsa.c:1.11 Rev: src/nettle/sha1-meta.c:1.2 Rev: src/nettle/sha1.c:1.8 Rev: src/nettle/sha256-meta.c:1.2 Rev: src/nettle/sha256.c:1.3 Rev: src/nettle/tools/input.c:1.2 Rev: src/nettle/tools/misc.c:1.2 Rev: src/nettle/tools/output.c:1.3 Rev: src/nettle/tools/parse.c:1.2 Rev: src/nettle/tools/sexp-conv.c:1.14 Rev: src/nettle/twofish-meta.c:1.2 Rev: src/nettle/twofish.c:1.6 Rev: src/nettle/yarrow256.c:1.17 Rev: src/nettle/yarrow_key_event.c:1.4
aes-encrypt-internal.c 3.11 KiB
/* aes-encrypt-internal.c
*
* Encryption function for the aes/rijndael block cipher.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002 Niels Möller
*
* The nettle library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version.
*
* The nettle library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include "aes-internal.h"
#include "macros.h"
void
_nettle_aes_encrypt(const struct aes_ctx *ctx,
const struct aes_table *T,
unsigned length, uint8_t *dst,
const uint8_t *src)
{
FOR_BLOCKS(length, dst, src, AES_BLOCK_SIZE)
{
uint32_t w0, w1, w2, w3; /* working ciphertext */
uint32_t t0, t1, t2, t3;
unsigned round;
/* Get clear text, using little-endian byte order.
* Also XOR with the first subkey. */
w0 = LE_READ_UINT32(src) ^ ctx->keys[0];
w1 = LE_READ_UINT32(src + 4) ^ ctx->keys[1];
w2 = LE_READ_UINT32(src + 8) ^ ctx->keys[2];
w3 = LE_READ_UINT32(src + 12) ^ ctx->keys[3];
for (round = 1; round < ctx->nrounds; round++)
{
t0 = AES_ROUND(T, w0, w1, w2, w3, ctx->keys[4*round]);
t1 = AES_ROUND(T, w1, w2, w3, w0, ctx->keys[4*round + 1]);
t2 = AES_ROUND(T, w2, w3, w0, w1, ctx->keys[4*round + 2]);
t3 = AES_ROUND(T, w3, w0, w1, w2, ctx->keys[4*round + 3]);
/* We could unroll the loop twice, to avoid these
assignments. If all eight variables fit in registers,
that should give a slight speedup. */
w0 = t0;
w1 = t1;
w2 = t2;
w3 = t3;
}