ref: 9e09742e9b5789a94b7676ff5f4e01468d2f2d88
dir: /sys/src/ape/lib/openssl/crypto/engine/eng_openssl.c/
/* crypto/engine/eng_openssl.c */
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
*
* 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 above 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 acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECDH support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include <stdio.h>
#include <openssl/crypto.h>
#include "cryptlib.h"
#include <openssl/engine.h>
#include <openssl/dso.h>
#include <openssl/pem.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#ifndef OPENSSL_NO_RSA
#include <openssl/rsa.h>
#endif
#ifndef OPENSSL_NO_DSA
#include <openssl/dsa.h>
#endif
#ifndef OPENSSL_NO_DH
#include <openssl/dh.h>
#endif
/* This testing gunk is implemented (and explained) lower down. It also assumes
* the application explicitly calls "ENGINE_load_openssl()" because this is no
* longer automatic in ENGINE_load_builtin_engines(). */
#define TEST_ENG_OPENSSL_RC4
#define TEST_ENG_OPENSSL_PKEY
/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
#define TEST_ENG_OPENSSL_RC4_P_INIT
/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
#define TEST_ENG_OPENSSL_SHA
/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
/* Now check what of those algorithms are actually enabled */
#ifdef OPENSSL_NO_RC4
#undef TEST_ENG_OPENSSL_RC4
#undef TEST_ENG_OPENSSL_RC4_OTHERS
#undef TEST_ENG_OPENSSL_RC4_P_INIT
#undef TEST_ENG_OPENSSL_RC4_P_CIPHER
#endif
#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA0) || defined(OPENSSL_NO_SHA1)
#undef TEST_ENG_OPENSSL_SHA
#undef TEST_ENG_OPENSSL_SHA_OTHERS
#undef TEST_ENG_OPENSSL_SHA_P_INIT
#undef TEST_ENG_OPENSSL_SHA_P_UPDATE
#undef TEST_ENG_OPENSSL_SHA_P_FINAL
#endif
#ifdef TEST_ENG_OPENSSL_RC4
static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
const int **nids, int nid);
#endif
#ifdef TEST_ENG_OPENSSL_SHA
static int openssl_digests(ENGINE *e, const EVP_MD **digest,
const int **nids, int nid);
#endif
#ifdef TEST_ENG_OPENSSL_PKEY
static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
UI_METHOD *ui_method, void *callback_data);
#endif
/* The constants used when creating the ENGINE */
static const char *engine_openssl_id = "openssl";
static const char *engine_openssl_name = "Software engine support";
/* This internal function is used by ENGINE_openssl() and possibly by the
* "dynamic" ENGINE support too */
static int bind_helper(ENGINE *e)
{
if(!ENGINE_set_id(e, engine_openssl_id)
|| !ENGINE_set_name(e, engine_openssl_name)
#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
#ifndef OPENSSL_NO_RSA
|| !ENGINE_set_RSA(e, RSA_get_default_method())
#endif
#ifndef OPENSSL_NO_DSA
|| !ENGINE_set_DSA(e, DSA_get_default_method())
#endif
#ifndef OPENSSL_NO_ECDH
|| !ENGINE_set_ECDH(e, ECDH_OpenSSL())
#endif
#ifndef OPENSSL_NO_ECDSA
|| !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())
#endif
#ifndef OPENSSL_NO_DH
|| !ENGINE_set_DH(e, DH_get_default_method())
#endif
|| !ENGINE_set_RAND(e, RAND_SSLeay())
#ifdef TEST_ENG_OPENSSL_RC4
|| !ENGINE_set_ciphers(e, openssl_ciphers)
#endif
#ifdef TEST_ENG_OPENSSL_SHA
|| !ENGINE_set_digests(e, openssl_digests)
#endif
#endif
#ifdef TEST_ENG_OPENSSL_PKEY
|| !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
#endif
)
return 0;
/* If we add errors to this ENGINE, ensure the error handling is setup here */
/* openssl_load_error_strings(); */
return 1;
}
static ENGINE *engine_openssl(void)
{
ENGINE *ret = ENGINE_new();
if(!ret)
return NULL;
if(!bind_helper(ret))
{
ENGINE_free(ret);
return NULL;
}
return ret;
}
void ENGINE_load_openssl(void)
{
ENGINE *toadd = engine_openssl();
if(!toadd) return;
ENGINE_add(toadd);
/* If the "add" worked, it gets a structural reference. So either way,
* we release our just-created reference. */
ENGINE_free(toadd);
ERR_clear_error();
}
/* This stuff is needed if this ENGINE is being compiled into a self-contained
* shared-library. */
#ifdef ENGINE_DYNAMIC_SUPPORT
static int bind_fn(ENGINE *e, const char *id)
{
if(id && (strcmp(id, engine_openssl_id) != 0))
return 0;
if(!bind_helper(e))
return 0;
return 1;
}
IMPLEMENT_DYNAMIC_CHECK_FN()
IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
#endif /* ENGINE_DYNAMIC_SUPPORT */
#ifdef TEST_ENG_OPENSSL_RC4
/* This section of code compiles an "alternative implementation" of two modes of
* RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
* should under normal circumstances go via this support rather than the default
* EVP support. There are other symbols to tweak the testing;
* TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
* we're asked for a cipher we don't support (should not happen).
* TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
* the "init_key" handler is called.
* TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
*/
#include <openssl/rc4.h>
#define TEST_RC4_KEY_SIZE 16
static int test_cipher_nids[] = {NID_rc4,NID_rc4_40};
static int test_cipher_nids_number = 2;
typedef struct {
unsigned char key[TEST_RC4_KEY_SIZE];
RC4_KEY ks;
} TEST_RC4_KEY;
#define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
static int test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
#ifdef TEST_ENG_OPENSSL_RC4_P_INIT
fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
#endif
memcpy(&test(ctx)->key[0],key,EVP_CIPHER_CTX_key_length(ctx));
RC4_set_key(&test(ctx)->ks,EVP_CIPHER_CTX_key_length(ctx),
test(ctx)->key);
return 1;
}
static int test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
const unsigned char *in, unsigned int inl)
{
#ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
#endif
RC4(&test(ctx)->ks,inl,in,out);
return 1;
}
static const EVP_CIPHER test_r4_cipher=
{
NID_rc4,
1,TEST_RC4_KEY_SIZE,0,
EVP_CIPH_VARIABLE_LENGTH,
test_rc4_init_key,
test_rc4_cipher,
NULL,
sizeof(TEST_RC4_KEY),
NULL,
NULL,
NULL,
NULL
};
static const EVP_CIPHER test_r4_40_cipher=
{
NID_rc4_40,
1,5 /* 40 bit */,0,
EVP_CIPH_VARIABLE_LENGTH,
test_rc4_init_key,
test_rc4_cipher,
NULL,
sizeof(TEST_RC4_KEY),
NULL,
NULL,
NULL,
NULL
};
static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
const int **nids, int nid)
{
if(!cipher)
{
/* We are returning a list of supported nids */
*nids = test_cipher_nids;
return test_cipher_nids_number;
}
/* We are being asked for a specific cipher */
if(nid == NID_rc4)
*cipher = &test_r4_cipher;
else if(nid == NID_rc4_40)
*cipher = &test_r4_40_cipher;
else
{
#ifdef TEST_ENG_OPENSSL_RC4_OTHERS
fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
"nid %d\n", nid);
#endif
*cipher = NULL;
return 0;
}
return 1;
}
#endif
#ifdef TEST_ENG_OPENSSL_SHA
/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
#include <openssl/sha.h>
static int test_digest_nids[] = {NID_sha1};
static int test_digest_nids_number = 1;
static int test_sha1_init(EVP_MD_CTX *ctx)
{
#ifdef TEST_ENG_OPENSSL_SHA_P_INIT
fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
#endif
return SHA1_Init(ctx->md_data);
}
static int test_sha1_update(EVP_MD_CTX *ctx,const void *data,size_t count)
{
#ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
#endif
return SHA1_Update(ctx->md_data,data,count);
}
static int test_sha1_final(EVP_MD_CTX *ctx,unsigned char *md)
{
#ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
#endif
return SHA1_Final(md,ctx->md_data);
}
static const EVP_MD test_sha_md=
{
NID_sha1,
NID_sha1WithRSAEncryption,
SHA_DIGEST_LENGTH,
0,
test_sha1_init,
test_sha1_update,
test_sha1_final,
NULL,
NULL,
EVP_PKEY_RSA_method,
SHA_CBLOCK,
sizeof(EVP_MD *)+sizeof(SHA_CTX),
};
static int openssl_digests(ENGINE *e, const EVP_MD **digest,
const int **nids, int nid)
{
if(!digest)
{
/* We are returning a list of supported nids */
*nids = test_digest_nids;
return test_digest_nids_number;
}
/* We are being asked for a specific digest */
if(nid == NID_sha1)
*digest = &test_sha_md;
else
{
#ifdef TEST_ENG_OPENSSL_SHA_OTHERS
fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
"nid %d\n", nid);
#endif
*digest = NULL;
return 0;
}
return 1;
}
#endif
#ifdef TEST_ENG_OPENSSL_PKEY
static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
UI_METHOD *ui_method, void *callback_data)
{
BIO *in;
EVP_PKEY *key;
fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n", key_id);
in = BIO_new_file(key_id, "r");
if (!in)
return NULL;
key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
BIO_free(in);
return key;
}
#endif