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This commit is contained in:
Zhi Guan
2015-08-15 15:02:15 +08:00
parent 06df2fab54
commit 3bdc0ea895
2536 changed files with 417052 additions and 271997 deletions
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261
crypto/modes/cbc128.c
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@@ -6,7 +6,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
@@ -48,7 +48,8 @@
*
*/
#include "modes.h"
#include <openssl/crypto.h>
#include "modes_lcl.h"
#include <string.h>
#ifndef MODES_DEBUG
@@ -58,149 +59,149 @@
#endif
#include <assert.h>
#define STRICT_ALIGNMENT 1
#if defined(__i386) || defined(__i386__) || \
defined(__x86_64) || defined(__x86_64__) || \
defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64) || \
defined(__s390__) || defined(__s390x__)
# undef STRICT_ALIGNMENT
# define STRICT_ALIGNMENT 0
#if !defined(STRICT_ALIGNMENT) && !defined(PEDANTIC)
# define STRICT_ALIGNMENT 0
#endif
void CRYPTO_cbc128_encrypt(const unsigned char *in, unsigned char *out,
size_t len, const void *key,
unsigned char ivec[16], block128_f block)
size_t len, const void *key,
unsigned char ivec[16], block128_f block)
{
size_t n;
const unsigned char *iv = ivec;
size_t n;
const unsigned char *iv = ivec;
assert(in && out && key && ivec);
assert(in && out && key && ivec);
#if !defined(OPENSSL_SMALL_FOOTPRINT)
if (STRICT_ALIGNMENT &&
((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
while (len>=16) {
for(n=0; n<16; ++n)
out[n] = in[n] ^ iv[n];
(*block)(out, out, key);
iv = out;
len -= 16;
in += 16;
out += 16;
}
} else {
while (len>=16) {
for(n=0; n<16; n+=sizeof(size_t))
*(size_t*)(out+n) =
*(size_t*)(in+n) ^ *(size_t*)(iv+n);
(*block)(out, out, key);
iv = out;
len -= 16;
in += 16;
out += 16;
}
}
if (STRICT_ALIGNMENT &&
((size_t)in | (size_t)out | (size_t)ivec) % sizeof(size_t) != 0) {
while (len >= 16) {
for (n = 0; n < 16; ++n)
out[n] = in[n] ^ iv[n];
(*block) (out, out, key);
iv = out;
len -= 16;
in += 16;
out += 16;
}
} else {
while (len >= 16) {
for (n = 0; n < 16; n += sizeof(size_t))
*(size_t *)(out + n) =
*(size_t *)(in + n) ^ *(size_t *)(iv + n);
(*block) (out, out, key);
iv = out;
len -= 16;
in += 16;
out += 16;
}
}
#endif
while (len) {
for(n=0; n<16 && n<len; ++n)
out[n] = in[n] ^ iv[n];
for(; n<16; ++n)
out[n] = iv[n];
(*block)(out, out, key);
iv = out;
if (len<=16) break;
len -= 16;
in += 16;
out += 16;
}
memcpy(ivec,iv,16);
while (len) {
for (n = 0; n < 16 && n < len; ++n)
out[n] = in[n] ^ iv[n];
for (; n < 16; ++n)
out[n] = iv[n];
(*block) (out, out, key);
iv = out;
if (len <= 16)
break;
len -= 16;
in += 16;
out += 16;
}
memcpy(ivec, iv, 16);
}
void CRYPTO_cbc128_decrypt(const unsigned char *in, unsigned char *out,
size_t len, const void *key,
unsigned char ivec[16], block128_f block)
size_t len, const void *key,
unsigned char ivec[16], block128_f block)
{
size_t n;
union { size_t align; unsigned char c[16]; } tmp;
size_t n;
union {
size_t t[16 / sizeof(size_t)];
unsigned char c[16];
} tmp;
assert(in && out && key && ivec);
assert(in && out && key && ivec);
#if !defined(OPENSSL_SMALL_FOOTPRINT)
if (in != out) {
const unsigned char *iv = ivec;
if (in != out) {
const unsigned char *iv = ivec;
if (STRICT_ALIGNMENT &&
((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
while (len>=16) {
(*block)(in, out, key);
for(n=0; n<16; ++n)
out[n] ^= iv[n];
iv = in;
len -= 16;
in += 16;
out += 16;
}
}
else {
while (len>=16) {
(*block)(in, out, key);
for(n=0; n<16; n+=sizeof(size_t))
*(size_t *)(out+n) ^= *(size_t *)(iv+n);
iv = in;
len -= 16;
in += 16;
out += 16;
}
}
memcpy(ivec,iv,16);
} else {
if (STRICT_ALIGNMENT &&
((size_t)in|(size_t)out|(size_t)ivec)%sizeof(size_t) != 0) {
unsigned char c;
while (len>=16) {
(*block)(in, tmp.c, key);
for(n=0; n<16; ++n) {
c = in[n];
out[n] = tmp.c[n] ^ ivec[n];
ivec[n] = c;
}
len -= 16;
in += 16;
out += 16;
}
}
else {
size_t c;
while (len>=16) {
(*block)(in, tmp.c, key);
for(n=0; n<16; n+=sizeof(size_t)) {
c = *(size_t *)(in+n);
*(size_t *)(out+n) =
*(size_t *)(tmp.c+n) ^ *(size_t *)(ivec+n);
*(size_t *)(ivec+n) = c;
}
len -= 16;
in += 16;
out += 16;
}
}
}
if (STRICT_ALIGNMENT &&
((size_t)in | (size_t)out | (size_t)ivec) % sizeof(size_t) != 0) {
while (len >= 16) {
(*block) (in, out, key);
for (n = 0; n < 16; ++n)
out[n] ^= iv[n];
iv = in;
len -= 16;
in += 16;
out += 16;
}
} else if (16 % sizeof(size_t) == 0) { /* always true */
while (len >= 16) {
size_t *out_t = (size_t *)out, *iv_t = (size_t *)iv;
(*block) (in, out, key);
for (n = 0; n < 16 / sizeof(size_t); n++)
out_t[n] ^= iv_t[n];
iv = in;
len -= 16;
in += 16;
out += 16;
}
}
memcpy(ivec, iv, 16);
} else {
if (STRICT_ALIGNMENT &&
((size_t)in | (size_t)out | (size_t)ivec) % sizeof(size_t) != 0) {
unsigned char c;
while (len >= 16) {
(*block) (in, tmp.c, key);
for (n = 0; n < 16; ++n) {
c = in[n];
out[n] = tmp.c[n] ^ ivec[n];
ivec[n] = c;
}
len -= 16;
in += 16;
out += 16;
}
} else if (16 % sizeof(size_t) == 0) { /* always true */
while (len >= 16) {
size_t c, *out_t = (size_t *)out, *ivec_t = (size_t *)ivec;
const size_t *in_t = (const size_t *)in;
(*block) (in, tmp.c, key);
for (n = 0; n < 16 / sizeof(size_t); n++) {
c = in_t[n];
out_t[n] = tmp.t[n] ^ ivec_t[n];
ivec_t[n] = c;
}
len -= 16;
in += 16;
out += 16;
}
}
}
#endif
while (len) {
unsigned char c;
(*block)(in, tmp.c, key);
for(n=0; n<16 && n<len; ++n) {
c = in[n];
out[n] = tmp.c[n] ^ ivec[n];
ivec[n] = c;
}
if (len<=16) {
for (; n<16; ++n)
ivec[n] = in[n];
break;
}
len -= 16;
in += 16;
out += 16;
}
while (len) {
unsigned char c;
(*block) (in, tmp.c, key);
for (n = 0; n < 16 && n < len; ++n) {
c = in[n];
out[n] = tmp.c[n] ^ ivec[n];
ivec[n] = c;
}
if (len <= 16) {
for (; n < 16; ++n)
ivec[n] = in[n];
break;
}
len -= 16;
in += 16;
out += 16;
}
}