9f897b2580
This removes 16k from a release-mode build of the bssl tool. Now that we've finished the AEAD refactor, there's no use in keeping this around as a prototype for "stateful AEADs". Before: Did 2264000 RC4-MD5 (16 bytes) seal operations in 1000430us (2263026.9 ops/sec): 36.2 MB/s Did 266000 RC4-MD5 (1350 bytes) seal operations in 1000984us (265738.5 ops/sec): 358.7 MB/s Did 50000 RC4-MD5 (8192 bytes) seal operations in 1014209us (49299.5 ops/sec): 403.9 MB/s After: Did 1895000 RC4-MD5 (16 bytes) seal operations in 1000239us (1894547.2 ops/sec): 30.3 MB/s Did 199000 RC4-MD5 (1350 bytes) seal operations in 1001361us (198729.5 ops/sec): 268.3 MB/s Did 39000 RC4-MD5 (8192 bytes) seal operations in 1014832us (38430.0 ops/sec): 314.8 MB/s There is a non-trivial performance hit, but this cipher doesn't matter much and the stitched mode code reaches into MD5_CTX and RC4_KEY in somewhat unfortunate ways. Change-Id: I9ecd28d6afb54e90ce61baecc641742af2ae6269 Reviewed-on: https://boringssl-review.googlesource.com/6752 Reviewed-by: Adam Langley <agl@google.com>
88 lines
4.0 KiB
C
88 lines
4.0 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#include <assert.h>
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#include <string.h>
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#include <openssl/cipher.h>
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#include <openssl/obj.h>
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#include <openssl/rc4.h>
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static int rc4_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
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const uint8_t *iv, int enc) {
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RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
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RC4_set_key(rc4key, EVP_CIPHER_CTX_key_length(ctx), key);
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return 1;
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}
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static int rc4_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
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size_t in_len) {
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RC4_KEY *rc4key = (RC4_KEY *)ctx->cipher_data;
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RC4(rc4key, in_len, in, out);
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return 1;
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}
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static const EVP_CIPHER rc4 = {
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NID_rc4, 1 /* block_size */, 16 /* key_size */,
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0 /* iv_len */, sizeof(RC4_KEY), EVP_CIPH_VARIABLE_LENGTH,
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NULL /* app_data */, rc4_init_key, rc4_cipher,
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NULL /* cleanup */, NULL /* ctrl */, };
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const EVP_CIPHER *EVP_rc4(void) { return &rc4; }
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