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This commit is contained in:
zhaoxiaomeng
2018-01-04 13:38:57 +08:00
committed by Simon
parent d11f845fde
commit 53af3b51ae
2361 changed files with 387455 additions and 144458 deletions
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275
crypto/evp/evp_enc.c
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@@ -1,58 +1,101 @@
/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
/* crypto/evp/evp_enc.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* 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 the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
#include <stdio.h>
#include <assert.h>
#include "internal/cryptlib.h"
#include "cryptlib.h"
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_ENGINE
# include <openssl/engine.h>
#endif
#include "internal/evp_int.h"
#ifdef OPENSSL_FIPS
# include <openssl/fips.h>
#endif
#include "evp_locl.h"
int EVP_CIPHER_CTX_reset(EVP_CIPHER_CTX *c)
{
if (c == NULL)
return 1;
if (c->cipher != NULL) {
if (c->cipher->cleanup && !c->cipher->cleanup(c))
return 0;
/* Cleanse cipher context data */
if (c->cipher_data && c->cipher->ctx_size)
OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size);
}
OPENSSL_free(c->cipher_data);
#ifndef OPENSSL_NO_ENGINE
ENGINE_finish(c->engine);
#ifdef OPENSSL_FIPS
# define M_do_cipher(ctx, out, in, inl) FIPS_cipher(ctx, out, in, inl)
#else
# define M_do_cipher(ctx, out, in, inl) ctx->cipher->do_cipher(ctx, out, in, inl)
#endif
memset(c, 0, sizeof(*c));
return 1;
const char EVP_version[] = "EVP" OPENSSL_VERSION_PTEXT;
void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
{
memset(ctx, 0, sizeof(EVP_CIPHER_CTX));
/* ctx->cipher=NULL; */
}
EVP_CIPHER_CTX *EVP_CIPHER_CTX_new(void)
{
return OPENSSL_zalloc(sizeof(EVP_CIPHER_CTX));
}
void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
{
EVP_CIPHER_CTX_reset(ctx);
OPENSSL_free(ctx);
EVP_CIPHER_CTX *ctx = OPENSSL_malloc(sizeof *ctx);
if (ctx)
EVP_CIPHER_CTX_init(ctx);
return ctx;
}
int EVP_CipherInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
const unsigned char *key, const unsigned char *iv, int enc)
{
EVP_CIPHER_CTX_reset(ctx);
if (cipher)
EVP_CIPHER_CTX_init(ctx);
return EVP_CipherInit_ex(ctx, cipher, NULL, key, iv, enc);
}
@@ -72,10 +115,12 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
* Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
* this context may already have an ENGINE! Try to avoid releasing the
* previous handle, re-querying for an ENGINE, and having a
* reinitialisation, when it may all be unnecessary.
* reinitialisation, when it may all be unecessary.
*/
if (ctx->engine && ctx->cipher
&& (cipher == NULL || cipher->nid == ctx->cipher->nid))
if (ctx->engine && ctx->cipher && (!cipher ||
(cipher
&& (cipher->nid ==
ctx->cipher->nid))))
goto skip_to_init;
#endif
if (cipher) {
@@ -86,7 +131,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
*/
if (ctx->cipher) {
unsigned long flags = ctx->flags;
EVP_CIPHER_CTX_reset(ctx);
EVP_CIPHER_CTX_cleanup(ctx);
/* Restore encrypt and flags */
ctx->encrypt = enc;
ctx->flags = flags;
@@ -107,7 +152,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
/*
* One positive side-effect of US's export control history,
* is that we should at least be able to avoid using US
* misspellings of "initialisation"?
* mispellings of "initialisation"?
*/
EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
@@ -123,10 +168,21 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
ctx->engine = NULL;
#endif
#ifdef OPENSSL_FIPS
if (FIPS_mode()) {
const EVP_CIPHER *fcipher = NULL;
if (cipher)
fcipher = evp_get_fips_cipher(cipher);
if (fcipher)
cipher = fcipher;
return FIPS_cipherinit(ctx, cipher, key, iv, enc);
}
#endif
ctx->cipher = cipher;
if (ctx->cipher->ctx_size) {
ctx->cipher_data = OPENSSL_zalloc(ctx->cipher->ctx_size);
if (ctx->cipher_data == NULL) {
ctx->cipher_data = OPENSSL_malloc(ctx->cipher->ctx_size);
if (!ctx->cipher_data) {
ctx->cipher = NULL;
EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE);
return 0;
}
@@ -138,6 +194,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
ctx->flags &= EVP_CIPHER_CTX_FLAG_WRAP_ALLOW;
if (ctx->cipher->flags & EVP_CIPH_CTRL_INIT) {
if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL)) {
ctx->cipher = NULL;
EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
return 0;
}
@@ -148,6 +205,10 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
}
#ifndef OPENSSL_NO_ENGINE
skip_to_init:
#endif
#ifdef OPENSSL_FIPS
if (FIPS_mode())
return FIPS_cipherinit(ctx, cipher, key, iv, enc);
#endif
/* we assume block size is a power of 2 in *cryptUpdate */
OPENSSL_assert(ctx->cipher->block_size == 1
@@ -160,7 +221,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
return 0;
}
if (!(EVP_CIPHER_flags(EVP_CIPHER_CTX_cipher(ctx)) & EVP_CIPH_CUSTOM_IV)) {
if (!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
switch (EVP_CIPHER_CTX_mode(ctx)) {
case EVP_CIPH_STREAM_CIPHER:
@@ -191,6 +252,7 @@ int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
default:
return 0;
break;
}
}
@@ -255,58 +317,13 @@ int EVP_DecryptInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher,
return EVP_CipherInit_ex(ctx, cipher, impl, key, iv, 0);
}
/*
* According to the letter of standard difference between pointers
* is specified to be valid only within same object. This makes
* it formally challenging to determine if input and output buffers
* are not partially overlapping with standard pointer arithmetic.
*/
#ifdef PTRDIFF_T
# undef PTRDIFF_T
#endif
#if defined(OPENSSL_SYS_VMS) && __INITIAL_POINTER_SIZE==64
/*
* Then we have VMS that distinguishes itself by adhering to
* sizeof(size_t)==4 even in 64-bit builds, which means that
* difference between two pointers might be truncated to 32 bits.
* In the context one can even wonder how comparison for
* equality is implemented. To be on the safe side we adhere to
* PTRDIFF_T even for comparison for equality.
*/
# define PTRDIFF_T uint64_t
#else
# define PTRDIFF_T size_t
#endif
int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
{
PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
/*
* Check for partially overlapping buffers. [Binary logical
* operations are used instead of boolean to minimize number
* of conditional branches.]
*/
int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
(diff > (0 - (PTRDIFF_T)len)));
return overlapped;
}
int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
const unsigned char *in, int inl)
{
int i, j, bl;
bl = ctx->cipher->block_size;
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
/* If block size > 1 then the cipher will have to do this check */
if (bl == 1 && is_partially_overlapping(out, in, inl)) {
EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
i = ctx->cipher->do_cipher(ctx, out, in, inl);
i = M_do_cipher(ctx, out, in, inl);
if (i < 0)
return 0;
else
@@ -318,13 +335,9 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
*outl = 0;
return inl == 0;
}
if (is_partially_overlapping(out + ctx->buf_len, in, inl)) {
EVPerr(EVP_F_EVP_ENCRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
if (ctx->buf_len == 0 && (inl & (ctx->block_mask)) == 0) {
if (ctx->cipher->do_cipher(ctx, out, in, inl)) {
if (M_do_cipher(ctx, out, in, inl)) {
*outl = inl;
return 1;
} else {
@@ -333,6 +346,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
}
}
i = ctx->buf_len;
bl = ctx->cipher->block_size;
OPENSSL_assert(bl <= (int)sizeof(ctx->buf));
if (i != 0) {
if (bl - i > inl) {
@@ -343,10 +357,10 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
} else {
j = bl - i;
memcpy(&(ctx->buf[i]), in, j);
if (!M_do_cipher(ctx, out, ctx->buf, bl))
return 0;
inl -= j;
in += j;
if (!ctx->cipher->do_cipher(ctx, out, ctx->buf, bl))
return 0;
out += bl;
*outl = bl;
}
@@ -355,7 +369,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
i = inl & (bl - 1);
inl -= i;
if (inl > 0) {
if (!ctx->cipher->do_cipher(ctx, out, in, inl))
if (!M_do_cipher(ctx, out, in, inl))
return 0;
*outl += inl;
}
@@ -379,7 +393,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
unsigned int i, b, bl;
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
ret = ctx->cipher->do_cipher(ctx, out, NULL, 0);
ret = M_do_cipher(ctx, out, NULL, 0);
if (ret < 0)
return 0;
else
@@ -407,7 +421,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
n = b - bl;
for (i = bl; i < b; i++)
ctx->buf[i] = n;
ret = ctx->cipher->do_cipher(ctx, out, ctx->buf, b);
ret = M_do_cipher(ctx, out, ctx->buf, b);
if (ret)
*outl = b;
@@ -421,15 +435,8 @@ int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
int fix_len;
unsigned int b;
b = ctx->cipher->block_size;
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
if (b == 1 && is_partially_overlapping(out, in, inl)) {
EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
fix_len = ctx->cipher->do_cipher(ctx, out, in, inl);
fix_len = M_do_cipher(ctx, out, in, inl);
if (fix_len < 0) {
*outl = 0;
return 0;
@@ -446,15 +453,10 @@ int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
if (ctx->flags & EVP_CIPH_NO_PADDING)
return EVP_EncryptUpdate(ctx, out, outl, in, inl);
b = ctx->cipher->block_size;
OPENSSL_assert(b <= sizeof ctx->final);
if (ctx->final_used) {
/* see comment about PTRDIFF_T comparison above */
if (((PTRDIFF_T)out == (PTRDIFF_T)in)
|| is_partially_overlapping(out, in, b)) {
EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
return 0;
}
memcpy(out, ctx->final, b);
out += b;
fix_len = 1;
@@ -495,7 +497,7 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
*outl = 0;
if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {
i = ctx->cipher->do_cipher(ctx, out, NULL, 0);
i = M_do_cipher(ctx, out, NULL, 0);
if (i < 0)
return 0;
else
@@ -544,6 +546,42 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
return (1);
}
void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
{
if (ctx) {
EVP_CIPHER_CTX_cleanup(ctx);
OPENSSL_free(ctx);
}
}
int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
{
#ifndef OPENSSL_FIPS
if (c->cipher != NULL) {
if (c->cipher->cleanup && !c->cipher->cleanup(c))
return 0;
/* Cleanse cipher context data */
if (c->cipher_data)
OPENSSL_cleanse(c->cipher_data, c->cipher->ctx_size);
}
if (c->cipher_data)
OPENSSL_free(c->cipher_data);
#endif
#ifndef OPENSSL_NO_ENGINE
if (c->engine)
/*
* The EVP_CIPHER we used belongs to an ENGINE, release the
* functional reference we held for this reason.
*/
ENGINE_finish(c->engine);
#endif
#ifdef OPENSSL_FIPS
FIPS_cipher_ctx_cleanup(c);
#endif
memset(c, 0, sizeof(EVP_CIPHER_CTX));
return 1;
}
int EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int keylen)
{
if (c->cipher->flags & EVP_CIPH_CUSTOM_KEY_LENGTH)
@@ -612,12 +650,13 @@ int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
}
#endif
EVP_CIPHER_CTX_reset(out);
memcpy(out, in, sizeof(*out));
EVP_CIPHER_CTX_cleanup(out);
memcpy(out, in, sizeof *out);
if (in->cipher_data && in->cipher->ctx_size) {
out->cipher_data = OPENSSL_malloc(in->cipher->ctx_size);
if (out->cipher_data == NULL) {
if (!out->cipher_data) {
out->cipher = NULL;
EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, ERR_R_MALLOC_FAILURE);
return 0;
}
@@ -625,6 +664,10 @@ int EVP_CIPHER_CTX_copy(EVP_CIPHER_CTX *out, const EVP_CIPHER_CTX *in)
}
if (in->cipher->flags & EVP_CIPH_CUSTOM_COPY)
return in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out);
if (!in->cipher->ctrl((EVP_CIPHER_CTX *)in, EVP_CTRL_COPY, 0, out)) {
out->cipher = NULL;
EVPerr(EVP_F_EVP_CIPHER_CTX_COPY, EVP_R_INITIALIZATION_ERROR);
return 0;
}
return 1;
}