/* crypto/engine/eng_openssl.c */
-/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
- * project 2000.
+/*
+ * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project
+ * 2000.
*/
/* ====================================================================
* Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
* 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";
-/* As this is only ever called once, there's no need for locking
- * (indeed - the lock will already be held by our caller!!!) */
-ENGINE *ENGINE_openssl(void)
- {
- ENGINE *ret = ENGINE_new();
- if(!ret)
- return NULL;
- if(!ENGINE_set_id(ret, engine_openssl_id) ||
- !ENGINE_set_name(ret, engine_openssl_name) ||
-#ifndef OPENSSL_NO_RSA
- !ENGINE_set_RSA(ret, RSA_get_default_method()) ||
+/*
+ * 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
-#ifndef OPENSSL_NO_DSA
- !ENGINE_set_DSA(ret, DSA_get_default_method()) ||
+#ifdef TEST_ENG_OPENSSL_PKEY
+ || !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
#endif
-#ifndef OPENSSL_NO_DH
- !ENGINE_set_DH(ret, DH_get_default_method()) ||
+ )
+ 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, 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 <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
- !ENGINE_set_RAND(ret, RAND_SSLeay()))
- {
- ENGINE_free(ret);
- return NULL;
- }
- return ret;
- }
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