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diff --git a/src/lib/libcrypto/engine/eng_openssl.c b/src/lib/libcrypto/engine/eng_openssl.c
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1/* $OpenBSD: eng_openssl.c,v 1.12 2015/12/07 03:30:09 bcook Exp $ */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1999-2001 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58/* ====================================================================
59 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
60 * ECDH support in OpenSSL originally developed by
61 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
62 */
63
64#include <stdio.h>
65#include <string.h>
66
67#include <openssl/opensslconf.h>
68
69#include <openssl/crypto.h>
70#include <openssl/dso.h>
71#include <openssl/engine.h>
72#include <openssl/err.h>
73#include <openssl/evp.h>
74#include <openssl/pem.h>
75#include <openssl/rand.h>
76
77#ifndef OPENSSL_NO_DH
78#include <openssl/dh.h>
79#endif
80#ifndef OPENSSL_NO_DSA
81#include <openssl/dsa.h>
82#endif
83#ifndef OPENSSL_NO_RSA
84#include <openssl/rsa.h>
85#endif
86
87/* This testing gunk is implemented (and explained) lower down. It also assumes
88 * the application explicitly calls "ENGINE_load_openssl()" because this is no
89 * longer automatic in ENGINE_load_builtin_engines(). */
90#define TEST_ENG_OPENSSL_RC4
91#define TEST_ENG_OPENSSL_PKEY
92/* #define TEST_ENG_OPENSSL_RC4_OTHERS */
93#define TEST_ENG_OPENSSL_RC4_P_INIT
94/* #define TEST_ENG_OPENSSL_RC4_P_CIPHER */
95#define TEST_ENG_OPENSSL_SHA
96/* #define TEST_ENG_OPENSSL_SHA_OTHERS */
97/* #define TEST_ENG_OPENSSL_SHA_P_INIT */
98/* #define TEST_ENG_OPENSSL_SHA_P_UPDATE */
99/* #define TEST_ENG_OPENSSL_SHA_P_FINAL */
100
101/* Now check what of those algorithms are actually enabled */
102#ifdef OPENSSL_NO_RC4
103#undef TEST_ENG_OPENSSL_RC4
104#undef TEST_ENG_OPENSSL_RC4_OTHERS
105#undef TEST_ENG_OPENSSL_RC4_P_INIT
106#undef TEST_ENG_OPENSSL_RC4_P_CIPHER
107#endif
108#if defined(OPENSSL_NO_SHA) || defined(OPENSSL_NO_SHA1)
109#undef TEST_ENG_OPENSSL_SHA
110#undef TEST_ENG_OPENSSL_SHA_OTHERS
111#undef TEST_ENG_OPENSSL_SHA_P_INIT
112#undef TEST_ENG_OPENSSL_SHA_P_UPDATE
113#undef TEST_ENG_OPENSSL_SHA_P_FINAL
114#endif
115
116#ifdef TEST_ENG_OPENSSL_RC4
117static int openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
118 const int **nids, int nid);
119#endif
120#ifdef TEST_ENG_OPENSSL_SHA
121static int openssl_digests(ENGINE *e, const EVP_MD **digest,
122 const int **nids, int nid);
123#endif
124
125#ifdef TEST_ENG_OPENSSL_PKEY
126static EVP_PKEY *openssl_load_privkey(ENGINE *eng, const char *key_id,
127 UI_METHOD *ui_method, void *callback_data);
128#endif
129
130/* The constants used when creating the ENGINE */
131static const char *engine_openssl_id = "openssl";
132static const char *engine_openssl_name = "Software engine support";
133
134/* This internal function is used by ENGINE_openssl() and possibly by the
135 * "dynamic" ENGINE support too */
136static int
137bind_helper(ENGINE *e)
138{
139 if (!ENGINE_set_id(e, engine_openssl_id) ||
140 !ENGINE_set_name(e, engine_openssl_name)
141#ifndef TEST_ENG_OPENSSL_NO_ALGORITHMS
142#ifndef OPENSSL_NO_RSA
143 || !ENGINE_set_RSA(e, RSA_get_default_method())
144#endif
145#ifndef OPENSSL_NO_DSA
146 || !ENGINE_set_DSA(e, DSA_get_default_method())
147#endif
148#ifndef OPENSSL_NO_ECDH
149 || !ENGINE_set_ECDH(e, ECDH_OpenSSL())
150#endif
151#ifndef OPENSSL_NO_ECDSA
152 || !ENGINE_set_ECDSA(e, ECDSA_OpenSSL())
153#endif
154#ifndef OPENSSL_NO_DH
155 || !ENGINE_set_DH(e, DH_get_default_method())
156#endif
157 || !ENGINE_set_RAND(e, RAND_SSLeay())
158#ifdef TEST_ENG_OPENSSL_RC4
159 || !ENGINE_set_ciphers(e, openssl_ciphers)
160#endif
161#ifdef TEST_ENG_OPENSSL_SHA
162 || !ENGINE_set_digests(e, openssl_digests)
163#endif
164#endif
165#ifdef TEST_ENG_OPENSSL_PKEY
166 || !ENGINE_set_load_privkey_function(e, openssl_load_privkey)
167#endif
168 )
169 return 0;
170 /* If we add errors to this ENGINE, ensure the error handling is setup here */
171 /* openssl_load_error_strings(); */
172 return 1;
173}
174
175static ENGINE *
176engine_openssl(void)
177{
178 ENGINE *ret = ENGINE_new();
179
180 if (!ret)
181 return NULL;
182 if (!bind_helper(ret)) {
183 ENGINE_free(ret);
184 return NULL;
185 }
186 return ret;
187}
188
189void
190ENGINE_load_openssl(void)
191{
192 ENGINE *toadd = engine_openssl();
193
194 if (!toadd)
195 return;
196 (void) ENGINE_add(toadd);
197 /* If the "add" worked, it gets a structural reference. So either way,
198 * we release our just-created reference. */
199 ENGINE_free(toadd);
200 ERR_clear_error();
201}
202
203/* This stuff is needed if this ENGINE is being compiled into a self-contained
204 * shared-library. */
205#ifdef ENGINE_DYNAMIC_SUPPORT
206static int
207bind_fn(ENGINE *e, const char *id)
208{
209 if (id && (strcmp(id, engine_openssl_id) != 0))
210 return 0;
211 if (!bind_helper(e))
212 return 0;
213 return 1;
214}
215IMPLEMENT_DYNAMIC_CHECK_FN()
216IMPLEMENT_DYNAMIC_BIND_FN(bind_fn)
217#endif /* ENGINE_DYNAMIC_SUPPORT */
218
219#ifdef TEST_ENG_OPENSSL_RC4
220/* This section of code compiles an "alternative implementation" of two modes of
221 * RC4 into this ENGINE. The result is that EVP_CIPHER operation for "rc4"
222 * should under normal circumstances go via this support rather than the default
223 * EVP support. There are other symbols to tweak the testing;
224 * TEST_ENC_OPENSSL_RC4_OTHERS - print a one line message to stderr each time
225 * we're asked for a cipher we don't support (should not happen).
226 * TEST_ENG_OPENSSL_RC4_P_INIT - print a one line message to stderr each time
227 * the "init_key" handler is called.
228 * TEST_ENG_OPENSSL_RC4_P_CIPHER - ditto for the "cipher" handler.
229 */
230#include <openssl/rc4.h>
231#define TEST_RC4_KEY_SIZE 16
232static int test_cipher_nids[] = {NID_rc4, NID_rc4_40};
233static int test_cipher_nids_number = 2;
234
235typedef struct {
236 unsigned char key[TEST_RC4_KEY_SIZE];
237 RC4_KEY ks;
238} TEST_RC4_KEY;
239
240#define test(ctx) ((TEST_RC4_KEY *)(ctx)->cipher_data)
241static int
242test_rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
243 const unsigned char *iv, int enc)
244{
245#ifdef TEST_ENG_OPENSSL_RC4_P_INIT
246 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_init_key() called\n");
247#endif
248 memcpy(&test(ctx)->key[0], key, EVP_CIPHER_CTX_key_length(ctx));
249 RC4_set_key(&test(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx),
250 test(ctx)->key);
251 return 1;
252}
253
254static int
255test_rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
256 const unsigned char *in, size_t inl)
257{
258#ifdef TEST_ENG_OPENSSL_RC4_P_CIPHER
259 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) test_cipher() called\n");
260#endif
261 RC4(&test(ctx)->ks, inl, in, out);
262 return 1;
263}
264
265static const EVP_CIPHER test_r4_cipher = {
266 NID_rc4,
267 1, TEST_RC4_KEY_SIZE, 0,
268 EVP_CIPH_VARIABLE_LENGTH,
269 test_rc4_init_key,
270 test_rc4_cipher,
271 NULL,
272 sizeof(TEST_RC4_KEY),
273 NULL,
274 NULL,
275 NULL,
276 NULL
277};
278
279static const EVP_CIPHER test_r4_40_cipher = {
280 NID_rc4_40,
281 1,5 /* 40 bit */,0,
282 EVP_CIPH_VARIABLE_LENGTH,
283 test_rc4_init_key,
284 test_rc4_cipher,
285 NULL,
286 sizeof(TEST_RC4_KEY),
287 NULL,
288 NULL,
289 NULL,
290 NULL
291};
292
293static int
294openssl_ciphers(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid)
295{
296 if (!cipher) {
297 /* We are returning a list of supported nids */
298 *nids = test_cipher_nids;
299 return test_cipher_nids_number;
300 }
301 /* We are being asked for a specific cipher */
302 if (nid == NID_rc4)
303 *cipher = &test_r4_cipher;
304 else if (nid == NID_rc4_40)
305 *cipher = &test_r4_40_cipher;
306 else {
307#ifdef TEST_ENG_OPENSSL_RC4_OTHERS
308 fprintf(stderr, "(TEST_ENG_OPENSSL_RC4) returning NULL for "
309 "nid %d\n", nid);
310#endif
311 *cipher = NULL;
312 return 0;
313 }
314 return 1;
315}
316#endif
317
318#ifdef TEST_ENG_OPENSSL_SHA
319/* Much the same sort of comment as for TEST_ENG_OPENSSL_RC4 */
320#include <openssl/sha.h>
321static int test_digest_nids[] = {NID_sha1};
322static int test_digest_nids_number = 1;
323
324static int
325test_sha1_init(EVP_MD_CTX *ctx)
326{
327#ifdef TEST_ENG_OPENSSL_SHA_P_INIT
328 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_init() called\n");
329#endif
330 return SHA1_Init(ctx->md_data);
331}
332
333static int
334test_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count)
335{
336#ifdef TEST_ENG_OPENSSL_SHA_P_UPDATE
337 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_update() called\n");
338#endif
339 return SHA1_Update(ctx->md_data, data, count);
340}
341
342static int
343test_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
344{
345#ifdef TEST_ENG_OPENSSL_SHA_P_FINAL
346 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) test_sha1_final() called\n");
347#endif
348 return SHA1_Final(md, ctx->md_data);
349}
350
351static const EVP_MD test_sha_md = {
352 NID_sha1,
353 NID_sha1WithRSAEncryption,
354 SHA_DIGEST_LENGTH,
355 0,
356 test_sha1_init,
357 test_sha1_update,
358 test_sha1_final,
359 NULL,
360 NULL,
361 EVP_PKEY_RSA_method,
362 SHA_CBLOCK,
363 sizeof(EVP_MD *) + sizeof(SHA_CTX),
364};
365
366static int
367openssl_digests(ENGINE *e, const EVP_MD **digest, const int **nids, int nid)
368{
369 if (!digest) {
370 /* We are returning a list of supported nids */
371 *nids = test_digest_nids;
372 return test_digest_nids_number;
373 }
374 /* We are being asked for a specific digest */
375 if (nid == NID_sha1)
376 *digest = &test_sha_md;
377 else {
378#ifdef TEST_ENG_OPENSSL_SHA_OTHERS
379 fprintf(stderr, "(TEST_ENG_OPENSSL_SHA) returning NULL for "
380 "nid %d\n", nid);
381#endif
382 *digest = NULL;
383 return 0;
384 }
385 return 1;
386}
387#endif
388
389#ifdef TEST_ENG_OPENSSL_PKEY
390static EVP_PKEY *
391openssl_load_privkey(ENGINE *eng, const char *key_id, UI_METHOD *ui_method,
392 void *callback_data)
393{
394 BIO *in;
395 EVP_PKEY *key;
396
397 fprintf(stderr, "(TEST_ENG_OPENSSL_PKEY)Loading Private key %s\n",
398 key_id);
399 in = BIO_new_file(key_id, "r");
400 if (!in)
401 return NULL;
402 key = PEM_read_bio_PrivateKey(in, NULL, 0, NULL);
403 BIO_free(in);
404 return key;
405}
406#endif
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