/* 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 #include #include "internal/cryptlib.h" #include #include #include #include #include #ifndef OPENSSL_NO_RSA # include #endif #ifndef OPENSSL_NO_DSA # include #endif #ifndef OPENSSL_NO_DH # include #endif #include #include /* * 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_HMAC */ /* #define TEST_ENG_OPENSSL_HMAC_INIT */ /* #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 #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 #ifdef TEST_ENG_OPENSSL_HMAC static int ossl_register_hmac_meth(void); static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, const int **nids, int nid); #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_EC || !ENGINE_set_ECDH(e, ECDH_OpenSSL()) || !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 #ifdef TEST_ENG_OPENSSL_HMAC || !ossl_register_hmac_meth() || !ENGINE_set_pkey_meths(e, ossl_pkey_meths) #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 # define TEST_RC4_KEY_SIZE 16 static const int test_cipher_nids[] = { NID_rc4, NID_rc4_40 }; static const 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 const int test_digest_nids[] = { NID_sha1 }; static const 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 #ifdef TEST_ENG_OPENSSL_HMAC /* * Experimental HMAC redirection implementation: mainly copied from * hm_pmeth.c */ /* HMAC pkey context structure */ typedef struct { const EVP_MD *md; /* MD for HMAC use */ ASN1_OCTET_STRING ktmp; /* Temp storage for key */ HMAC_CTX ctx; } OSSL_HMAC_PKEY_CTX; static int ossl_hmac_init(EVP_PKEY_CTX *ctx) { OSSL_HMAC_PKEY_CTX *hctx; hctx = OPENSSL_malloc(sizeof(*hctx)); if (!hctx) return 0; hctx->md = NULL; hctx->ktmp.data = NULL; hctx->ktmp.length = 0; hctx->ktmp.flags = 0; hctx->ktmp.type = V_ASN1_OCTET_STRING; HMAC_CTX_init(&hctx->ctx); EVP_PKEY_CTX_set_data(ctx, hctx); EVP_PKEY_CTX_set0_keygen_info(ctx, NULL, 0); # ifdef TEST_ENG_OPENSSL_HMAC_INIT fprintf(stderr, "(TEST_ENG_OPENSSL_HMAC) ossl_hmac_init() called\n"); # endif return 1; } static int ossl_hmac_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src) { OSSL_HMAC_PKEY_CTX *sctx, *dctx; if (!ossl_hmac_init(dst)) return 0; sctx = EVP_PKEY_CTX_get_data(src); dctx = EVP_PKEY_CTX_get_data(dst); dctx->md = sctx->md; HMAC_CTX_init(&dctx->ctx); if (!HMAC_CTX_copy(&dctx->ctx, &sctx->ctx)) return 0; if (sctx->ktmp.data) { if (!ASN1_OCTET_STRING_set(&dctx->ktmp, sctx->ktmp.data, sctx->ktmp.length)) return 0; } return 1; } static void ossl_hmac_cleanup(EVP_PKEY_CTX *ctx) { OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); HMAC_CTX_cleanup(&hctx->ctx); OPENSSL_clear_free(hctx->ktmp.data, hctx->ktmp.length); OPENSSL_free(hctx); } static int ossl_hmac_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey) { ASN1_OCTET_STRING *hkey = NULL; OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); if (!hctx->ktmp.data) return 0; hkey = ASN1_OCTET_STRING_dup(&hctx->ktmp); if (!hkey) return 0; EVP_PKEY_assign(pkey, EVP_PKEY_HMAC, hkey); return 1; } static int ossl_int_update(EVP_MD_CTX *ctx, const void *data, size_t count) { OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx->pctx); if (!HMAC_Update(&hctx->ctx, data, count)) return 0; return 1; } static int ossl_hmac_signctx_init(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx) { EVP_MD_CTX_set_flags(mctx, EVP_MD_CTX_FLAG_NO_INIT); mctx->update = ossl_int_update; return 1; } static int ossl_hmac_signctx(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, EVP_MD_CTX *mctx) { unsigned int hlen; OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); int l = EVP_MD_CTX_size(mctx); if (l < 0) return 0; *siglen = l; if (!sig) return 1; if (!HMAC_Final(&hctx->ctx, sig, &hlen)) return 0; *siglen = (size_t)hlen; return 1; } static int ossl_hmac_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2) { OSSL_HMAC_PKEY_CTX *hctx = EVP_PKEY_CTX_get_data(ctx); EVP_PKEY *pk; ASN1_OCTET_STRING *key; switch (type) { case EVP_PKEY_CTRL_SET_MAC_KEY: if ((!p2 && p1 > 0) || (p1 < -1)) return 0; if (!ASN1_OCTET_STRING_set(&hctx->ktmp, p2, p1)) return 0; break; case EVP_PKEY_CTRL_MD: hctx->md = p2; break; case EVP_PKEY_CTRL_DIGESTINIT: pk = EVP_PKEY_CTX_get0_pkey(ctx); key = EVP_PKEY_get0(pk); if (!HMAC_Init_ex(&hctx->ctx, key->data, key->length, hctx->md, NULL)) return 0; break; default: return -2; } return 1; } static int ossl_hmac_ctrl_str(EVP_PKEY_CTX *ctx, const char *type, const char *value) { if (!value) { return 0; } if (strcmp(type, "key") == 0) { void *p = (void *)value; return ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, -1, p); } if (strcmp(type, "hexkey") == 0) { unsigned char *key; int r; long keylen; key = string_to_hex(value, &keylen); if (!key) return 0; r = ossl_hmac_ctrl(ctx, EVP_PKEY_CTRL_SET_MAC_KEY, keylen, key); OPENSSL_free(key); return r; } return -2; } static EVP_PKEY_METHOD *ossl_hmac_meth; static int ossl_register_hmac_meth(void) { EVP_PKEY_METHOD *meth; meth = EVP_PKEY_meth_new(EVP_PKEY_HMAC, 0); if (!meth) return 0; EVP_PKEY_meth_set_init(meth, ossl_hmac_init); EVP_PKEY_meth_set_copy(meth, ossl_hmac_copy); EVP_PKEY_meth_set_cleanup(meth, ossl_hmac_cleanup); EVP_PKEY_meth_set_keygen(meth, 0, ossl_hmac_keygen); EVP_PKEY_meth_set_signctx(meth, ossl_hmac_signctx_init, ossl_hmac_signctx); EVP_PKEY_meth_set_ctrl(meth, ossl_hmac_ctrl, ossl_hmac_ctrl_str); ossl_hmac_meth = meth; return 1; } static int ossl_pkey_meths(ENGINE *e, EVP_PKEY_METHOD **pmeth, const int **nids, int nid) { static int ossl_pkey_nids[] = { EVP_PKEY_HMAC, 0 }; if (!pmeth) { *nids = ossl_pkey_nids; return 1; } if (nid == EVP_PKEY_HMAC) { *pmeth = ossl_hmac_meth; return 1; } *pmeth = NULL; return 0; } #endif