mirror of
https://github.com/openssl/openssl.git
synced 2025-01-06 13:26:43 +08:00
f6c95e46c0
Add a "where did this EVP_{CIPHER,MD} come from" flag: global, via fetch,
or via EVP_{CIPHER,MD}_meth_new. Update EVP_{CIPHER,MD}_free to handle all
three origins. The flag is deliberately right before some function pointers,
so that compile-time failures (int/pointer) will occur, as opposed to
taking a bit in the existing "flags" field. The "global variable" flag
is non-zero, so the default case of using OPENSSL_zalloc (for provider
ciphers), will do the right thing. Ref-counting is a no-op for
Make up_ref no-op for global MD and CIPHER objects
Deprecate EVP_MD_CTX_md(). Added EVP_MD_CTX_get0_md() (same semantics as
the deprecated function) and EVP_MD_CTX_get1_md(). Likewise, deprecate
EVP_CIPHER_CTX_cipher() in favor of EVP_CIPHER_CTX_get0_cipher(), and add
EVP_CIPHER_CTX_get1_CIPHER().
Refactor EVP_MD_free() and EVP_MD_meth_free() to call new common
evp_md_free_int() function.
Refactor EVP_CIPHER_free() and EVP_CIPHER_meth_free() to call new common
evp_cipher_free_int() function.
Also change some flags tests to explicit test == or != zero. E.g.,
if (flags & x) --> if ((flags & x) != 0)
if (!(flags & x)) --> if ((flags & x) == 0)
Only done for those lines where "get0_cipher" calls were made.
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14193)
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/*
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* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* DES low level APIs are deprecated for public use, but still ok for internal
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* use.
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*/
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#include "internal/deprecated.h"
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#include <stdio.h>
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#include "internal/cryptlib.h"
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#ifndef OPENSSL_NO_DES
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# include <openssl/evp.h>
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# include <openssl/objects.h>
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# include "crypto/evp.h"
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# include <openssl/des.h>
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# include "evp_local.h"
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static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc);
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static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl);
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typedef struct {
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DES_key_schedule ks; /* key schedule */
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DES_cblock inw;
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DES_cblock outw;
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} DESX_CBC_KEY;
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# define data(ctx) EVP_C_DATA(DESX_CBC_KEY,ctx)
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static const EVP_CIPHER d_xcbc_cipher = {
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NID_desx_cbc,
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8, 24, 8,
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EVP_CIPH_CBC_MODE,
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EVP_ORIG_GLOBAL,
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desx_cbc_init_key,
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desx_cbc_cipher,
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NULL,
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sizeof(DESX_CBC_KEY),
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EVP_CIPHER_set_asn1_iv,
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EVP_CIPHER_get_asn1_iv,
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NULL,
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NULL
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};
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const EVP_CIPHER *EVP_desx_cbc(void)
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{
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return &d_xcbc_cipher;
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}
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static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
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const unsigned char *iv, int enc)
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{
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DES_cblock *deskey = (DES_cblock *)key;
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DES_set_key_unchecked(deskey, &data(ctx)->ks);
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memcpy(&data(ctx)->inw[0], &key[8], 8);
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memcpy(&data(ctx)->outw[0], &key[16], 8);
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return 1;
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}
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static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
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const unsigned char *in, size_t inl)
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{
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while (inl >= EVP_MAXCHUNK) {
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DES_xcbc_encrypt(in, out, (long)EVP_MAXCHUNK, &data(ctx)->ks,
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(DES_cblock *)ctx->iv,
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&data(ctx)->inw, &data(ctx)->outw,
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EVP_CIPHER_CTX_encrypting(ctx));
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inl -= EVP_MAXCHUNK;
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in += EVP_MAXCHUNK;
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out += EVP_MAXCHUNK;
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}
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if (inl)
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DES_xcbc_encrypt(in, out, (long)inl, &data(ctx)->ks,
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(DES_cblock *)ctx->iv,
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&data(ctx)->inw, &data(ctx)->outw,
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EVP_CIPHER_CTX_encrypting(ctx));
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return 1;
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}
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#endif
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