2 * Copyright 2015-2022 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
10 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
14 * SHA-1 low level APIs are deprecated for public use, but still ok for
15 * internal use. Note, that due to symbols not being exported, only the
16 * #defines and strucures can be accessed, in this case SHA_CBLOCK and
19 #include "internal/deprecated.h"
21 #include <openssl/opensslconf.h>
29 #include <openssl/engine.h>
30 #include <openssl/sha.h>
31 #include <openssl/aes.h>
32 #include <openssl/rsa.h>
33 #include <openssl/evp.h>
34 #include <openssl/async.h>
35 #include <openssl/bn.h>
36 #include <openssl/crypto.h>
37 #include <openssl/ssl.h>
38 #include <openssl/modes.h>
40 #if defined(OPENSSL_SYS_UNIX) && defined(OPENSSL_THREADS)
49 #include "e_dasync_err.c"
51 /* Engine Id and Name */
52 static const char *engine_dasync_id = "dasync";
53 static const char *engine_dasync_name = "Dummy Async engine support";
56 /* Engine Lifetime functions */
57 static int dasync_destroy(ENGINE *e);
58 static int dasync_init(ENGINE *e);
59 static int dasync_finish(ENGINE *e);
60 void engine_load_dasync_int(void);
63 /* Set up digests. Just SHA1 for now */
64 static int dasync_digests(ENGINE *e, const EVP_MD **digest,
65 const int **nids, int nid);
67 static void dummy_pause_job(void);
70 static int dasync_sha1_init(EVP_MD_CTX *ctx);
71 static int dasync_sha1_update(EVP_MD_CTX *ctx, const void *data,
73 static int dasync_sha1_final(EVP_MD_CTX *ctx, unsigned char *md);
76 * Holds the EVP_MD object for sha1 in this engine. Set up once only during
77 * engine bind and can then be reused many times.
79 static EVP_MD *_hidden_sha1_md = NULL;
80 static const EVP_MD *dasync_sha1(void)
82 return _hidden_sha1_md;
84 static void destroy_digests(void)
86 EVP_MD_meth_free(_hidden_sha1_md);
87 _hidden_sha1_md = NULL;
90 static int dasync_digest_nids(const int **nids)
92 static int digest_nids[2] = { 0, 0 };
98 if ((md = dasync_sha1()) != NULL)
99 digest_nids[pos++] = EVP_MD_get_type(md);
100 digest_nids[pos] = 0;
108 static int dasync_pkey(ENGINE *e, EVP_PKEY_METHOD **pmeth,
109 const int **pnids, int nid);
111 static int dasync_rsa_init(EVP_PKEY_CTX *ctx);
112 static void dasync_rsa_cleanup(EVP_PKEY_CTX *ctx);
113 static int dasync_rsa_paramgen_init(EVP_PKEY_CTX *ctx);
114 static int dasync_rsa_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
115 static int dasync_rsa_keygen_init(EVP_PKEY_CTX *ctx);
116 static int dasync_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
117 static int dasync_rsa_encrypt_init(EVP_PKEY_CTX *ctx);
118 static int dasync_rsa_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
119 size_t *outlen, const unsigned char *in,
121 static int dasync_rsa_decrypt_init(EVP_PKEY_CTX *ctx);
122 static int dasync_rsa_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
123 size_t *outlen, const unsigned char *in,
125 static int dasync_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
126 static int dasync_rsa_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
129 static EVP_PKEY_METHOD *dasync_rsa;
130 static const EVP_PKEY_METHOD *dasync_rsa_orig;
134 static int dasync_aes128_cbc_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
136 static int dasync_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
137 const unsigned char *iv, int enc);
138 static int dasync_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
139 const unsigned char *in, size_t inl);
140 static int dasync_aes128_cbc_cleanup(EVP_CIPHER_CTX *ctx);
142 static int dasync_aes256_ctr_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
144 static int dasync_aes256_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
145 const unsigned char *iv, int enc);
146 static int dasync_aes256_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
147 const unsigned char *in, size_t inl);
148 static int dasync_aes256_ctr_cleanup(EVP_CIPHER_CTX *ctx);
150 static int dasync_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
152 static int dasync_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
153 const unsigned char *key,
154 const unsigned char *iv,
156 static int dasync_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
158 const unsigned char *in,
160 static int dasync_aes128_cbc_hmac_sha1_cleanup(EVP_CIPHER_CTX *ctx);
162 struct dasync_pipeline_ctx {
163 void *inner_cipher_data;
164 unsigned int numpipes;
165 unsigned char **inbufs;
166 unsigned char **outbufs;
168 unsigned char tlsaad[SSL_MAX_PIPELINES][EVP_AEAD_TLS1_AAD_LEN];
173 * Holds the EVP_CIPHER object for aes_128_cbc in this engine. Set up once only
174 * during engine bind and can then be reused many times.
176 static EVP_CIPHER *_hidden_aes_128_cbc = NULL;
177 static const EVP_CIPHER *dasync_aes_128_cbc(void)
179 return _hidden_aes_128_cbc;
182 static EVP_CIPHER *_hidden_aes_256_ctr = NULL;
183 static const EVP_CIPHER *dasync_aes_256_ctr(void)
185 return _hidden_aes_256_ctr;
189 * Holds the EVP_CIPHER object for aes_128_cbc_hmac_sha1 in this engine. Set up
190 * once only during engine bind and can then be reused many times.
192 * This 'stitched' cipher depends on the EVP_aes_128_cbc_hmac_sha1() cipher,
193 * which is implemented only if the AES-NI instruction set extension is available
194 * (see OPENSSL_IA32CAP(3)). If that's not the case, then this cipher will not
195 * be available either.
197 * Note: Since it is a legacy mac-then-encrypt cipher, modern TLS peers (which
198 * negotiate the encrypt-then-mac extension) won't negotiate it anyway.
200 static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL;
201 static const EVP_CIPHER *dasync_aes_128_cbc_hmac_sha1(void)
203 return _hidden_aes_128_cbc_hmac_sha1;
206 static void destroy_ciphers(void)
208 EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
209 EVP_CIPHER_meth_free(_hidden_aes_256_ctr);
210 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
211 _hidden_aes_128_cbc = NULL;
212 _hidden_aes_256_ctr = NULL;
213 _hidden_aes_128_cbc_hmac_sha1 = NULL;
216 static int dasync_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
217 const int **nids, int nid);
219 static int dasync_cipher_nids[] = {
222 NID_aes_128_cbc_hmac_sha1,
226 static int bind_dasync(ENGINE *e)
229 if ((dasync_rsa_orig = EVP_PKEY_meth_find(EVP_PKEY_RSA)) == NULL
230 || (dasync_rsa = EVP_PKEY_meth_new(EVP_PKEY_RSA,
231 EVP_PKEY_FLAG_AUTOARGLEN)) == NULL)
233 EVP_PKEY_meth_set_init(dasync_rsa, dasync_rsa_init);
234 EVP_PKEY_meth_set_cleanup(dasync_rsa, dasync_rsa_cleanup);
235 EVP_PKEY_meth_set_paramgen(dasync_rsa, dasync_rsa_paramgen_init,
236 dasync_rsa_paramgen);
237 EVP_PKEY_meth_set_keygen(dasync_rsa, dasync_rsa_keygen_init,
239 EVP_PKEY_meth_set_encrypt(dasync_rsa, dasync_rsa_encrypt_init,
241 EVP_PKEY_meth_set_decrypt(dasync_rsa, dasync_rsa_decrypt_init,
243 EVP_PKEY_meth_set_ctrl(dasync_rsa, dasync_rsa_ctrl,
244 dasync_rsa_ctrl_str);
246 /* Ensure the dasync error handling is set up */
247 ERR_load_DASYNC_strings();
249 if (!ENGINE_set_id(e, engine_dasync_id)
250 || !ENGINE_set_name(e, engine_dasync_name)
251 || !ENGINE_set_pkey_meths(e, dasync_pkey)
252 || !ENGINE_set_digests(e, dasync_digests)
253 || !ENGINE_set_ciphers(e, dasync_ciphers)
254 || !ENGINE_set_destroy_function(e, dasync_destroy)
255 || !ENGINE_set_init_function(e, dasync_init)
256 || !ENGINE_set_finish_function(e, dasync_finish)) {
257 DASYNCerr(DASYNC_F_BIND_DASYNC, DASYNC_R_INIT_FAILED);
262 * Set up the EVP_CIPHER and EVP_MD objects for the ciphers/digests
263 * supplied by this engine
265 _hidden_sha1_md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption);
266 if (_hidden_sha1_md == NULL
267 || !EVP_MD_meth_set_result_size(_hidden_sha1_md, SHA_DIGEST_LENGTH)
268 || !EVP_MD_meth_set_input_blocksize(_hidden_sha1_md, SHA_CBLOCK)
269 || !EVP_MD_meth_set_app_datasize(_hidden_sha1_md,
270 sizeof(EVP_MD *) + sizeof(SHA_CTX))
271 || !EVP_MD_meth_set_flags(_hidden_sha1_md, EVP_MD_FLAG_DIGALGID_ABSENT)
272 || !EVP_MD_meth_set_init(_hidden_sha1_md, dasync_sha1_init)
273 || !EVP_MD_meth_set_update(_hidden_sha1_md, dasync_sha1_update)
274 || !EVP_MD_meth_set_final(_hidden_sha1_md, dasync_sha1_final)) {
275 EVP_MD_meth_free(_hidden_sha1_md);
276 _hidden_sha1_md = NULL;
279 _hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc,
282 if (_hidden_aes_128_cbc == NULL
283 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16)
284 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc,
285 EVP_CIPH_FLAG_DEFAULT_ASN1
287 | EVP_CIPH_FLAG_PIPELINE
288 | EVP_CIPH_CUSTOM_COPY)
289 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc,
290 dasync_aes128_init_key)
291 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc,
292 dasync_aes128_cbc_cipher)
293 || !EVP_CIPHER_meth_set_cleanup(_hidden_aes_128_cbc,
294 dasync_aes128_cbc_cleanup)
295 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc,
296 dasync_aes128_cbc_ctrl)
297 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc,
298 sizeof(struct dasync_pipeline_ctx))) {
299 EVP_CIPHER_meth_free(_hidden_aes_128_cbc);
300 _hidden_aes_128_cbc = NULL;
303 _hidden_aes_256_ctr = EVP_CIPHER_meth_new(NID_aes_256_ctr,
306 if (_hidden_aes_256_ctr == NULL
307 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_256_ctr,16)
308 || !EVP_CIPHER_meth_set_flags(_hidden_aes_256_ctr,
309 EVP_CIPH_FLAG_DEFAULT_ASN1
311 | EVP_CIPH_FLAG_PIPELINE
312 | EVP_CIPH_CUSTOM_COPY)
313 || !EVP_CIPHER_meth_set_init(_hidden_aes_256_ctr,
314 dasync_aes256_init_key)
315 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_256_ctr,
316 dasync_aes256_ctr_cipher)
317 || !EVP_CIPHER_meth_set_cleanup(_hidden_aes_256_ctr,
318 dasync_aes256_ctr_cleanup)
319 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_256_ctr,
320 dasync_aes256_ctr_ctrl)
321 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_256_ctr,
322 sizeof(struct dasync_pipeline_ctx))) {
323 EVP_CIPHER_meth_free(_hidden_aes_256_ctr);
324 _hidden_aes_256_ctr = NULL;
327 _hidden_aes_128_cbc_hmac_sha1 = EVP_CIPHER_meth_new(
328 NID_aes_128_cbc_hmac_sha1,
331 if (_hidden_aes_128_cbc_hmac_sha1 == NULL
332 || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16)
333 || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1,
335 | EVP_CIPH_FLAG_DEFAULT_ASN1
336 | EVP_CIPH_FLAG_AEAD_CIPHER
337 | EVP_CIPH_FLAG_PIPELINE
338 | EVP_CIPH_CUSTOM_COPY)
339 || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1,
340 dasync_aes128_cbc_hmac_sha1_init_key)
341 || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1,
342 dasync_aes128_cbc_hmac_sha1_cipher)
343 || !EVP_CIPHER_meth_set_cleanup(_hidden_aes_128_cbc_hmac_sha1,
344 dasync_aes128_cbc_hmac_sha1_cleanup)
345 || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1,
346 dasync_aes128_cbc_hmac_sha1_ctrl)
347 || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1,
348 sizeof(struct dasync_pipeline_ctx))) {
349 EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1);
350 _hidden_aes_128_cbc_hmac_sha1 = NULL;
356 static void destroy_pkey(void)
359 * We don't actually need to free the dasync_rsa method since this is
360 * automatically freed for us by libcrypto.
362 dasync_rsa_orig = NULL;
366 # ifndef OPENSSL_NO_DYNAMIC_ENGINE
367 static int bind_helper(ENGINE *e, const char *id)
369 if (id && (strcmp(id, engine_dasync_id) != 0))
376 IMPLEMENT_DYNAMIC_CHECK_FN()
377 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper)
380 static ENGINE *engine_dasync(void)
382 ENGINE *ret = ENGINE_new();
385 if (!bind_dasync(ret)) {
392 void engine_load_dasync_int(void)
394 ENGINE *toadd = engine_dasync();
400 * If the "add" worked, it gets a structural reference. So either way, we
401 * release our just-created reference.
405 * If the "add" didn't work, it was probably a conflict because it was
406 * already added (eg. someone calling ENGINE_load_blah then calling
407 * ENGINE_load_builtin_engines() perhaps).
412 static int dasync_init(ENGINE *e)
418 static int dasync_finish(ENGINE *e)
424 static int dasync_destroy(ENGINE *e)
429 ERR_unload_DASYNC_strings();
433 static int dasync_pkey(ENGINE *e, EVP_PKEY_METHOD **pmeth,
434 const int **pnids, int nid)
436 static const int rnid = EVP_PKEY_RSA;
443 if (nid == EVP_PKEY_RSA) {
452 static int dasync_digests(ENGINE *e, const EVP_MD **digest,
453 const int **nids, int nid)
457 /* We are returning a list of supported nids */
458 return dasync_digest_nids(nids);
460 /* We are being asked for a specific digest */
463 *digest = dasync_sha1();
473 static int dasync_ciphers(ENGINE *e, const EVP_CIPHER **cipher,
474 const int **nids, int nid)
477 if (cipher == NULL) {
478 /* We are returning a list of supported nids */
479 *nids = dasync_cipher_nids;
480 return (sizeof(dasync_cipher_nids) -
481 1) / sizeof(dasync_cipher_nids[0]);
483 /* We are being asked for a specific cipher */
485 case NID_aes_128_cbc:
486 *cipher = dasync_aes_128_cbc();
488 case NID_aes_256_ctr:
489 *cipher = dasync_aes_256_ctr();
491 case NID_aes_128_cbc_hmac_sha1:
492 *cipher = dasync_aes_128_cbc_hmac_sha1();
502 static void wait_cleanup(ASYNC_WAIT_CTX *ctx, const void *key,
503 OSSL_ASYNC_FD readfd, void *pvwritefd)
505 OSSL_ASYNC_FD *pwritefd = (OSSL_ASYNC_FD *)pvwritefd;
506 #if defined(ASYNC_WIN)
508 CloseHandle(*pwritefd);
509 #elif defined(ASYNC_POSIX)
513 OPENSSL_free(pwritefd);
516 #define DUMMY_CHAR 'X'
518 static void dummy_pause_job(void) {
520 ASYNC_WAIT_CTX *waitctx;
521 ASYNC_callback_fn callback;
523 OSSL_ASYNC_FD pipefds[2] = {0, 0};
524 OSSL_ASYNC_FD *writefd;
525 #if defined(ASYNC_WIN)
526 DWORD numwritten, numread;
527 char buf = DUMMY_CHAR;
528 #elif defined(ASYNC_POSIX)
529 char buf = DUMMY_CHAR;
532 if ((job = ASYNC_get_current_job()) == NULL)
535 waitctx = ASYNC_get_wait_ctx(job);
537 if (ASYNC_WAIT_CTX_get_callback(waitctx, &callback, &callback_arg) && callback != NULL) {
539 * In the Dummy async engine we are cheating. We call the callback that the job
540 * is complete before the call to ASYNC_pause_job(). A real
541 * async engine would only call the callback when the job was actually complete
543 (*callback)(callback_arg);
549 if (ASYNC_WAIT_CTX_get_fd(waitctx, engine_dasync_id, &pipefds[0],
550 (void **)&writefd)) {
551 pipefds[1] = *writefd;
553 writefd = OPENSSL_malloc(sizeof(*writefd));
556 #if defined(ASYNC_WIN)
557 if (CreatePipe(&pipefds[0], &pipefds[1], NULL, 256) == 0) {
558 OPENSSL_free(writefd);
561 #elif defined(ASYNC_POSIX)
562 if (pipe(pipefds) != 0) {
563 OPENSSL_free(writefd);
567 *writefd = pipefds[1];
569 if (!ASYNC_WAIT_CTX_set_wait_fd(waitctx, engine_dasync_id, pipefds[0],
570 writefd, wait_cleanup)) {
571 wait_cleanup(waitctx, engine_dasync_id, pipefds[0], writefd);
576 * In the Dummy async engine we are cheating. We signal that the job
577 * is complete by waking it before the call to ASYNC_pause_job(). A real
578 * async engine would only wake when the job was actually complete
580 #if defined(ASYNC_WIN)
581 WriteFile(pipefds[1], &buf, 1, &numwritten, NULL);
582 #elif defined(ASYNC_POSIX)
583 if (write(pipefds[1], &buf, 1) < 0)
587 /* Ignore errors - we carry on anyway */
590 /* Clear the wake signal */
591 #if defined(ASYNC_WIN)
592 ReadFile(pipefds[0], &buf, 1, &numread, NULL);
593 #elif defined(ASYNC_POSIX)
594 if (read(pipefds[0], &buf, 1) < 0)
600 * SHA1 implementation. At the moment we just defer to the standard
603 static int dasync_sha1_init(EVP_MD_CTX *ctx)
607 return EVP_MD_meth_get_init(EVP_sha1())(ctx);
610 static int dasync_sha1_update(EVP_MD_CTX *ctx, const void *data,
615 return EVP_MD_meth_get_update(EVP_sha1())(ctx, data, count);
618 static int dasync_sha1_final(EVP_MD_CTX *ctx, unsigned char *md)
622 return EVP_MD_meth_get_final(EVP_sha1())(ctx, md);
625 /* Cipher helper functions */
627 static int dasync_cipher_ctrl_helper(EVP_CIPHER_CTX *ctx, int type, int arg,
628 void *ptr, int aeadcapable,
629 const EVP_CIPHER *ciph)
632 struct dasync_pipeline_ctx *pipe_ctx =
633 (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
635 if (pipe_ctx == NULL)
641 size_t sz = EVP_CIPHER_impl_ctx_size(ciph);
642 void *inner_cipher_data = OPENSSL_malloc(sz);
644 if (inner_cipher_data == NULL)
646 memcpy(inner_cipher_data, pipe_ctx->inner_cipher_data, sz);
647 pipe_ctx->inner_cipher_data = inner_cipher_data;
651 case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS:
652 pipe_ctx->numpipes = arg;
653 pipe_ctx->outbufs = (unsigned char **)ptr;
656 case EVP_CTRL_SET_PIPELINE_INPUT_BUFS:
657 pipe_ctx->numpipes = arg;
658 pipe_ctx->inbufs = (unsigned char **)ptr;
661 case EVP_CTRL_SET_PIPELINE_INPUT_LENS:
662 pipe_ctx->numpipes = arg;
663 pipe_ctx->lens = (size_t *)ptr;
666 case EVP_CTRL_AEAD_SET_MAC_KEY:
669 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data);
670 ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_cbc_hmac_sha1())
671 (ctx, type, arg, ptr);
672 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx);
675 case EVP_CTRL_AEAD_TLS1_AAD:
677 unsigned char *p = ptr;
680 if (!aeadcapable || arg != EVP_AEAD_TLS1_AAD_LEN)
683 if (pipe_ctx->aadctr >= SSL_MAX_PIPELINES)
686 memcpy(pipe_ctx->tlsaad[pipe_ctx->aadctr], ptr,
687 EVP_AEAD_TLS1_AAD_LEN);
690 len = p[arg - 2] << 8 | p[arg - 1];
692 if (EVP_CIPHER_CTX_is_encrypting(ctx)) {
693 if ((p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) {
694 if (len < AES_BLOCK_SIZE)
696 len -= AES_BLOCK_SIZE;
699 return ((len + SHA_DIGEST_LENGTH + AES_BLOCK_SIZE)
700 & -AES_BLOCK_SIZE) - len;
702 return SHA_DIGEST_LENGTH;
713 static int dasync_cipher_init_key_helper(EVP_CIPHER_CTX *ctx,
714 const unsigned char *key,
715 const unsigned char *iv, int enc,
716 const EVP_CIPHER *cipher)
719 struct dasync_pipeline_ctx *pipe_ctx =
720 (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
722 if (pipe_ctx->inner_cipher_data == NULL
723 && EVP_CIPHER_impl_ctx_size(cipher) != 0) {
724 pipe_ctx->inner_cipher_data = OPENSSL_zalloc(
725 EVP_CIPHER_impl_ctx_size(cipher));
726 if (pipe_ctx->inner_cipher_data == NULL)
730 pipe_ctx->numpipes = 0;
731 pipe_ctx->aadctr = 0;
733 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data);
734 ret = EVP_CIPHER_meth_get_init(cipher)(ctx, key, iv, enc);
735 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx);
740 static int dasync_cipher_helper(EVP_CIPHER_CTX *ctx, unsigned char *out,
741 const unsigned char *in, size_t inl,
742 const EVP_CIPHER *cipher)
745 unsigned int i, pipes;
746 struct dasync_pipeline_ctx *pipe_ctx =
747 (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
749 pipes = pipe_ctx->numpipes;
750 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data);
752 if (pipe_ctx->aadctr != 0) {
753 if (pipe_ctx->aadctr != 1)
755 EVP_CIPHER_meth_get_ctrl(cipher)
756 (ctx, EVP_CTRL_AEAD_TLS1_AAD,
757 EVP_AEAD_TLS1_AAD_LEN,
758 pipe_ctx->tlsaad[0]);
760 ret = EVP_CIPHER_meth_get_do_cipher(cipher)
763 if (pipe_ctx->aadctr > 0 && pipe_ctx->aadctr != pipes)
765 for (i = 0; i < pipes; i++) {
766 if (pipe_ctx->aadctr > 0) {
767 EVP_CIPHER_meth_get_ctrl(cipher)
768 (ctx, EVP_CTRL_AEAD_TLS1_AAD,
769 EVP_AEAD_TLS1_AAD_LEN,
770 pipe_ctx->tlsaad[i]);
772 ret = ret && EVP_CIPHER_meth_get_do_cipher(cipher)
773 (ctx, pipe_ctx->outbufs[i], pipe_ctx->inbufs[i],
776 pipe_ctx->numpipes = 0;
778 pipe_ctx->aadctr = 0;
779 EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx);
783 static int dasync_cipher_cleanup_helper(EVP_CIPHER_CTX *ctx,
784 const EVP_CIPHER *cipher)
786 struct dasync_pipeline_ctx *pipe_ctx =
787 (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
789 OPENSSL_clear_free(pipe_ctx->inner_cipher_data,
790 EVP_CIPHER_impl_ctx_size(cipher));
796 * AES128 CBC Implementation
799 static int dasync_aes128_cbc_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
802 return dasync_cipher_ctrl_helper(ctx, type, arg, ptr, 0, EVP_aes_128_cbc());
805 static int dasync_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
806 const unsigned char *iv, int enc)
808 return dasync_cipher_init_key_helper(ctx, key, iv, enc, EVP_aes_128_cbc());
811 static int dasync_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
812 const unsigned char *in, size_t inl)
814 return dasync_cipher_helper(ctx, out, in, inl, EVP_aes_128_cbc());
817 static int dasync_aes128_cbc_cleanup(EVP_CIPHER_CTX *ctx)
819 return dasync_cipher_cleanup_helper(ctx, EVP_aes_128_cbc());
822 static int dasync_aes256_ctr_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg,
825 return dasync_cipher_ctrl_helper(ctx, type, arg, ptr, 0, EVP_aes_256_ctr());
828 static int dasync_aes256_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
829 const unsigned char *iv, int enc)
831 return dasync_cipher_init_key_helper(ctx, key, iv, enc, EVP_aes_256_ctr());
834 static int dasync_aes256_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
835 const unsigned char *in, size_t inl)
837 return dasync_cipher_helper(ctx, out, in, inl, EVP_aes_256_ctr());
840 static int dasync_aes256_ctr_cleanup(EVP_CIPHER_CTX *ctx)
842 return dasync_cipher_cleanup_helper(ctx, EVP_aes_256_ctr());
847 * AES128 CBC HMAC SHA1 Implementation
850 static int dasync_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type,
853 return dasync_cipher_ctrl_helper(ctx, type, arg, ptr, 1, EVP_aes_128_cbc_hmac_sha1());
856 static int dasync_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx,
857 const unsigned char *key,
858 const unsigned char *iv,
862 * We can safely assume that EVP_aes_128_cbc_hmac_sha1() != NULL,
863 * see comment before the definition of dasync_aes_128_cbc_hmac_sha1().
865 return dasync_cipher_init_key_helper(ctx, key, iv, enc,
866 EVP_aes_128_cbc_hmac_sha1());
869 static int dasync_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx,
871 const unsigned char *in,
874 return dasync_cipher_helper(ctx, out, in, inl, EVP_aes_128_cbc_hmac_sha1());
877 static int dasync_aes128_cbc_hmac_sha1_cleanup(EVP_CIPHER_CTX *ctx)
880 * We can safely assume that EVP_aes_128_cbc_hmac_sha1() != NULL,
881 * see comment before the definition of dasync_aes_128_cbc_hmac_sha1().
883 return dasync_cipher_cleanup_helper(ctx, EVP_aes_128_cbc_hmac_sha1());
890 static int dasync_rsa_init(EVP_PKEY_CTX *ctx)
892 static int (*pinit)(EVP_PKEY_CTX *ctx);
895 EVP_PKEY_meth_get_init(dasync_rsa_orig, &pinit);
899 static void dasync_rsa_cleanup(EVP_PKEY_CTX *ctx)
901 static void (*pcleanup)(EVP_PKEY_CTX *ctx);
903 if (pcleanup == NULL)
904 EVP_PKEY_meth_get_cleanup(dasync_rsa_orig, &pcleanup);
908 static int dasync_rsa_paramgen_init(EVP_PKEY_CTX *ctx)
910 static int (*pparamgen_init)(EVP_PKEY_CTX *ctx);
912 if (pparamgen_init == NULL)
913 EVP_PKEY_meth_get_paramgen(dasync_rsa_orig, &pparamgen_init, NULL);
914 return pparamgen_init != NULL ? pparamgen_init(ctx) : 1;
917 static int dasync_rsa_paramgen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
919 static int (*pparamgen)(EVP_PKEY_CTX *c, EVP_PKEY *pkey);
921 if (pparamgen == NULL)
922 EVP_PKEY_meth_get_paramgen(dasync_rsa_orig, NULL, &pparamgen);
923 return pparamgen != NULL ? pparamgen(ctx, pkey) : 1;
926 static int dasync_rsa_keygen_init(EVP_PKEY_CTX *ctx)
928 static int (*pkeygen_init)(EVP_PKEY_CTX *ctx);
930 if (pkeygen_init == NULL)
931 EVP_PKEY_meth_get_keygen(dasync_rsa_orig, &pkeygen_init, NULL);
932 return pkeygen_init != NULL ? pkeygen_init(ctx) : 1;
935 static int dasync_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
937 static int (*pkeygen)(EVP_PKEY_CTX *c, EVP_PKEY *pkey);
940 EVP_PKEY_meth_get_keygen(dasync_rsa_orig, NULL, &pkeygen);
941 return pkeygen(ctx, pkey);
944 static int dasync_rsa_encrypt_init(EVP_PKEY_CTX *ctx)
946 static int (*pencrypt_init)(EVP_PKEY_CTX *ctx);
948 if (pencrypt_init == NULL)
949 EVP_PKEY_meth_get_encrypt(dasync_rsa_orig, &pencrypt_init, NULL);
950 return pencrypt_init != NULL ? pencrypt_init(ctx) : 1;
953 static int dasync_rsa_encrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
954 size_t *outlen, const unsigned char *in,
957 static int (*pencryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out,
958 size_t *outlen, const unsigned char *in,
961 if (pencryptfn == NULL)
962 EVP_PKEY_meth_get_encrypt(dasync_rsa_orig, NULL, &pencryptfn);
963 return pencryptfn(ctx, out, outlen, in, inlen);
966 static int dasync_rsa_decrypt_init(EVP_PKEY_CTX *ctx)
968 static int (*pdecrypt_init)(EVP_PKEY_CTX *ctx);
970 if (pdecrypt_init == NULL)
971 EVP_PKEY_meth_get_decrypt(dasync_rsa_orig, &pdecrypt_init, NULL);
972 return pdecrypt_init != NULL ? pdecrypt_init(ctx) : 1;
975 static int dasync_rsa_decrypt(EVP_PKEY_CTX *ctx, unsigned char *out,
976 size_t *outlen, const unsigned char *in,
979 static int (*pdecrypt)(EVP_PKEY_CTX *ctx, unsigned char *out,
980 size_t *outlen, const unsigned char *in,
983 if (pdecrypt == NULL)
984 EVP_PKEY_meth_get_encrypt(dasync_rsa_orig, NULL, &pdecrypt);
985 return pdecrypt(ctx, out, outlen, in, inlen);
988 static int dasync_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
990 static int (*pctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
993 EVP_PKEY_meth_get_ctrl(dasync_rsa_orig, &pctrl, NULL);
994 return pctrl(ctx, type, p1, p2);
997 static int dasync_rsa_ctrl_str(EVP_PKEY_CTX *ctx, const char *type,
1000 static int (*pctrl_str)(EVP_PKEY_CTX *ctx, const char *type,
1003 if (pctrl_str == NULL)
1004 EVP_PKEY_meth_get_ctrl(dasync_rsa_orig, NULL, &pctrl_str);
1005 return pctrl_str(ctx, type, value);