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Side by Side Diff: openssl/crypto/aes/aes_cbc.c

Issue 9254031: Upgrade chrome's OpenSSL to same version Android ships with. (Closed) Base URL: http://src.chromium.org/svn/trunk/deps/third_party/openssl/
Patch Set: '' Created 8 years, 11 months ago
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1 /* crypto/aes/aes_cbc.c -*- mode:C; c-file-style: "eay" -*- */ 1 /* crypto/aes/aes_cbc.c -*- mode:C; c-file-style: "eay" -*- */
2 /* ==================================================================== 2 /* ====================================================================
3 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved. 3 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
4 * 4 *
5 * Redistribution and use in source and binary forms, with or without 5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions 6 * modification, are permitted provided that the following conditions
7 * are met: 7 * are met:
8 * 8 *
9 * 1. Redistributions of source code must retain the above copyright 9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer. 10 * notice, this list of conditions and the following disclaimer.
(...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE. 47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ==================================================================== 48 * ====================================================================
49 * 49 *
50 */ 50 */
51 51
52 #ifndef AES_DEBUG 52 #include <openssl/aes.h>
53 # ifndef NDEBUG 53 #include <openssl/modes.h>
54 # define NDEBUG
55 # endif
56 #endif
57 #include <assert.h>
58 54
59 #include <openssl/aes.h>
60 #include "aes_locl.h"
61
62 #if !defined(OPENSSL_FIPS_AES_ASM)
63 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, 55 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
64 » » const unsigned long length, const AES_KEY *key, 56 » » size_t len, const AES_KEY *key,
65 unsigned char *ivec, const int enc) { 57 unsigned char *ivec, const int enc) {
66 58
67 » unsigned long n; 59 » if (enc)
68 » unsigned long len = length; 60 » » CRYPTO_cbc128_encrypt(in,out,len,key,ivec,(block128_f)AES_encryp t);
69 » unsigned char tmp[AES_BLOCK_SIZE]; 61 » else
70 » const unsigned char *iv = ivec; 62 » » CRYPTO_cbc128_decrypt(in,out,len,key,ivec,(block128_f)AES_decryp t);
71
72 » assert(in && out && key && ivec);
73 » assert((AES_ENCRYPT == enc)||(AES_DECRYPT == enc));
74
75 » if (AES_ENCRYPT == enc) {
76 » » while (len >= AES_BLOCK_SIZE) {
77 » » » for(n=0; n < AES_BLOCK_SIZE; ++n)
78 » » » » out[n] = in[n] ^ iv[n];
79 » » » AES_encrypt(out, out, key);
80 » » » iv = out;
81 » » » len -= AES_BLOCK_SIZE;
82 » » » in += AES_BLOCK_SIZE;
83 » » » out += AES_BLOCK_SIZE;
84 » » }
85 » » if (len) {
86 » » » for(n=0; n < len; ++n)
87 » » » » out[n] = in[n] ^ iv[n];
88 » » » for(n=len; n < AES_BLOCK_SIZE; ++n)
89 » » » » out[n] = iv[n];
90 » » » AES_encrypt(out, out, key);
91 » » » iv = out;
92 » » }
93 » » memcpy(ivec,iv,AES_BLOCK_SIZE);
94 » } else if (in != out) {
95 » » while (len >= AES_BLOCK_SIZE) {
96 » » » AES_decrypt(in, out, key);
97 » » » for(n=0; n < AES_BLOCK_SIZE; ++n)
98 » » » » out[n] ^= iv[n];
99 » » » iv = in;
100 » » » len -= AES_BLOCK_SIZE;
101 » » » in += AES_BLOCK_SIZE;
102 » » » out += AES_BLOCK_SIZE;
103 » » }
104 » » if (len) {
105 » » » AES_decrypt(in,tmp,key);
106 » » » for(n=0; n < len; ++n)
107 » » » » out[n] = tmp[n] ^ iv[n];
108 » » » iv = in;
109 » » }
110 » » memcpy(ivec,iv,AES_BLOCK_SIZE);
111 » } else {
112 » » while (len >= AES_BLOCK_SIZE) {
113 » » » memcpy(tmp, in, AES_BLOCK_SIZE);
114 » » » AES_decrypt(in, out, key);
115 » » » for(n=0; n < AES_BLOCK_SIZE; ++n)
116 » » » » out[n] ^= ivec[n];
117 » » » memcpy(ivec, tmp, AES_BLOCK_SIZE);
118 » » » len -= AES_BLOCK_SIZE;
119 » » » in += AES_BLOCK_SIZE;
120 » » » out += AES_BLOCK_SIZE;
121 » » }
122 » » if (len) {
123 » » » memcpy(tmp, in, AES_BLOCK_SIZE);
124 » » » AES_decrypt(tmp, out, key);
125 » » » for(n=0; n < len; ++n)
126 » » » » out[n] ^= ivec[n];
127 » » » for(n=len; n < AES_BLOCK_SIZE; ++n)
128 » » » » out[n] = tmp[n];
129 » » » memcpy(ivec, tmp, AES_BLOCK_SIZE);
130 » » }
131 » }
132 } 63 }
133 #endif
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