/* $OpenBSD: eng_openssl.c,v 1.12 2015/12/07 03:30:09 bcook Exp $ */ /* 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 #include #include #include #include #include #include #include #include #include #ifndef OPENSSL_NO_DH #include #endif #ifndef OPENSSL_NO_DSA #include #endif #ifndef OPENSSL_NO_RSA #include #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_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; (void) 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 #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, size_t 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 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