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Diffstat (limited to 'openssl/crypto/evp/enc_min.c')
-rw-r--r--openssl/crypto/evp/enc_min.c390
1 files changed, 0 insertions, 390 deletions
diff --git a/openssl/crypto/evp/enc_min.c b/openssl/crypto/evp/enc_min.c
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--- a/openssl/crypto/evp/enc_min.c
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-/* crypto/evp/enc_min.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * 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 "cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/err.h>
-#include <openssl/rand.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-#include "evp_locl.h"
-
-void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
- {
-#ifdef OPENSSL_FIPS
- FIPS_selftest_check();
-#endif
- memset(ctx,0,sizeof(EVP_CIPHER_CTX));
- /* ctx->cipher=NULL; */
- }
-
-#ifdef OPENSSL_FIPS
-
-/* The purpose of these is to trap programs that attempt to use non FIPS
- * algorithms in FIPS mode and ignore the errors.
- */
-
-static int bad_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc)
- { FIPS_ERROR_IGNORED("Cipher init"); return 0;}
-
-static int bad_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
- { FIPS_ERROR_IGNORED("Cipher update"); return 0;}
-
-/* NB: no cleanup because it is allowed after failed init */
-
-static int bad_set_asn1(EVP_CIPHER_CTX *ctx, ASN1_TYPE *typ)
- { FIPS_ERROR_IGNORED("Cipher set_asn1"); return 0;}
-static int bad_get_asn1(EVP_CIPHER_CTX *ctx, ASN1_TYPE *typ)
- { FIPS_ERROR_IGNORED("Cipher get_asn1"); return 0;}
-static int bad_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
- { FIPS_ERROR_IGNORED("Cipher ctrl"); return 0;}
-
-static const EVP_CIPHER bad_cipher =
- {
- 0,
- 0,
- 0,
- 0,
- 0,
- bad_init,
- bad_do_cipher,
- NULL,
- 0,
- bad_set_asn1,
- bad_get_asn1,
- bad_ctrl,
- NULL
- };
-
-#endif
-
-#ifndef OPENSSL_NO_ENGINE
-
-#ifdef OPENSSL_FIPS
-
-static int do_engine_null(ENGINE *impl) { return 0;}
-static int do_evp_enc_engine_null(EVP_CIPHER_CTX *ctx,
- const EVP_CIPHER **pciph, ENGINE *impl)
- { return 1; }
-
-static int (*do_engine_finish)(ENGINE *impl)
- = do_engine_null;
-
-static int (*do_evp_enc_engine)
- (EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pciph, ENGINE *impl)
- = do_evp_enc_engine_null;
-
-void int_EVP_CIPHER_set_engine_callbacks(
- int (*eng_ciph_fin)(ENGINE *impl),
- int (*eng_ciph_evp)
- (EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pciph, ENGINE *impl))
- {
- do_engine_finish = eng_ciph_fin;
- do_evp_enc_engine = eng_ciph_evp;
- }
-
-#else
-
-#define do_engine_finish ENGINE_finish
-
-static int do_evp_enc_engine(EVP_CIPHER_CTX *ctx, const EVP_CIPHER **pcipher, ENGINE *impl)
- {
- if(impl)
- {
- if (!ENGINE_init(impl))
- {
- EVPerr(EVP_F_DO_EVP_ENC_ENGINE, EVP_R_INITIALIZATION_ERROR);
- return 0;
- }
- }
- else
- /* Ask if an ENGINE is reserved for this job */
- impl = ENGINE_get_cipher_engine((*pcipher)->nid);
- if(impl)
- {
- /* There's an ENGINE for this job ... (apparently) */
- const EVP_CIPHER *c = ENGINE_get_cipher(impl, (*pcipher)->nid);
- if(!c)
- {
- /* One positive side-effect of US's export
- * control history, is that we should at least
- * be able to avoid using US mispellings of
- * "initialisation"? */
- EVPerr(EVP_F_DO_EVP_ENC_ENGINE, EVP_R_INITIALIZATION_ERROR);
- return 0;
- }
- /* We'll use the ENGINE's private cipher definition */
- *pcipher = c;
- /* Store the ENGINE functional reference so we know
- * 'cipher' came from an ENGINE and we need to release
- * it when done. */
- ctx->engine = impl;
- }
- else
- ctx->engine = NULL;
- return 1;
- }
-
-#endif
-
-#endif
-
-int EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *cipher, ENGINE *impl,
- const unsigned char *key, const unsigned char *iv, int enc)
- {
- if (enc == -1)
- enc = ctx->encrypt;
- else
- {
- if (enc)
- enc = 1;
- ctx->encrypt = enc;
- }
-#ifdef OPENSSL_FIPS
- if(FIPS_selftest_failed())
- {
- FIPSerr(FIPS_F_EVP_CIPHERINIT_EX,FIPS_R_FIPS_SELFTEST_FAILED);
- ctx->cipher = &bad_cipher;
- return 0;
- }
-#endif
-#ifndef OPENSSL_NO_ENGINE
- /* 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 unecessary. */
- if (ctx->engine && ctx->cipher && (!cipher ||
- (cipher && (cipher->nid == ctx->cipher->nid))))
- goto skip_to_init;
-#endif
- if (cipher)
- {
- /* Ensure a context left lying around from last time is cleared
- * (the previous check attempted to avoid this if the same
- * ENGINE and EVP_CIPHER could be used). */
- EVP_CIPHER_CTX_cleanup(ctx);
-
- /* Restore encrypt field: it is zeroed by cleanup */
- ctx->encrypt = enc;
-#ifndef OPENSSL_NO_ENGINE
- if (!do_evp_enc_engine(ctx, &cipher, impl))
- return 0;
-#endif
-
- ctx->cipher=cipher;
- if (ctx->cipher->ctx_size)
- {
- ctx->cipher_data=OPENSSL_malloc(ctx->cipher->ctx_size);
- if (!ctx->cipher_data)
- {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- }
- else
- {
- ctx->cipher_data = NULL;
- }
- ctx->key_len = cipher->key_len;
- ctx->flags = 0;
- if(ctx->cipher->flags & EVP_CIPH_CTRL_INIT)
- {
- if(!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_INIT, 0, NULL))
- {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_INITIALIZATION_ERROR);
- return 0;
- }
- }
- }
- else if(!ctx->cipher)
- {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_NO_CIPHER_SET);
- return 0;
- }
-#ifndef OPENSSL_NO_ENGINE
-skip_to_init:
-#endif
- /* we assume block size is a power of 2 in *cryptUpdate */
- OPENSSL_assert(ctx->cipher->block_size == 1
- || ctx->cipher->block_size == 8
- || ctx->cipher->block_size == 16);
-
- if(!(EVP_CIPHER_CTX_flags(ctx) & EVP_CIPH_CUSTOM_IV)) {
- switch(EVP_CIPHER_CTX_mode(ctx)) {
-
- case EVP_CIPH_STREAM_CIPHER:
- case EVP_CIPH_ECB_MODE:
- break;
-
- case EVP_CIPH_CFB_MODE:
- case EVP_CIPH_OFB_MODE:
-
- ctx->num = 0;
-
- case EVP_CIPH_CBC_MODE:
-
- OPENSSL_assert(EVP_CIPHER_CTX_iv_length(ctx) <=
- (int)sizeof(ctx->iv));
- if(iv) memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
- memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
- break;
-
- default:
- return 0;
- break;
- }
- }
-
-#ifdef OPENSSL_FIPS
- /* After 'key' is set no further parameters changes are permissible.
- * So only check for non FIPS enabling at this point.
- */
- if (key && FIPS_mode())
- {
- if (!(ctx->cipher->flags & EVP_CIPH_FLAG_FIPS)
- & !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW))
- {
- EVPerr(EVP_F_EVP_CIPHERINIT_EX, EVP_R_DISABLED_FOR_FIPS);
-#if 0
- ERR_add_error_data(2, "cipher=",
- EVP_CIPHER_name(ctx->cipher));
-#endif
- ctx->cipher = &bad_cipher;
- return 0;
- }
- }
-#endif
-
- if(key || (ctx->cipher->flags & EVP_CIPH_ALWAYS_CALL_INIT)) {
- if(!ctx->cipher->init(ctx,key,iv,enc)) return 0;
- }
- ctx->buf_len=0;
- ctx->final_used=0;
- ctx->block_mask=ctx->cipher->block_size-1;
- return 1;
- }
-
-int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
- {
- 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);
-#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. */
- do_engine_finish(c->engine);
-#endif
- memset(c,0,sizeof(EVP_CIPHER_CTX));
- return 1;
- }
-
-int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl)
- {
-#ifdef OPENSSL_FIPS
- FIPS_selftest_check();
-#endif
- return ctx->cipher->do_cipher(ctx,out,in,inl);
- }
-
-int EVP_CIPHER_CTX_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr)
-{
- int ret;
- if(!ctx->cipher) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_NO_CIPHER_SET);
- return 0;
- }
-
- if(!ctx->cipher->ctrl) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_NOT_IMPLEMENTED);
- return 0;
- }
-
- ret = ctx->cipher->ctrl(ctx, type, arg, ptr);
- if(ret == -1) {
- EVPerr(EVP_F_EVP_CIPHER_CTX_CTRL, EVP_R_CTRL_OPERATION_NOT_IMPLEMENTED);
- return 0;
- }
- return ret;
-}
-
-unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx)
- {
- return ctx->cipher->flags;
- }
-
-int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
- {
- return ctx->cipher->iv_len;
- }
-
-int EVP_CIPHER_nid(const EVP_CIPHER *cipher)
- {
- return cipher->nid;
- }