2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
5 /* ====================================================================
6 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
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
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/)"
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.
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.
34 * 6. Redistributions of any form whatsoever must retain the following
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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 * ====================================================================
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).
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #ifndef OPENSSL_NO_ENGINE
65 #include <openssl/engine.h>
67 #include "asn1_locl.h"
70 typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
72 DECLARE_STACK_OF(EVP_PKEY_METHOD)
73 STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
75 extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
76 extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth, cmac_pkey_meth;
77 extern const EVP_PKEY_METHOD dhx_pkey_meth;
79 static const EVP_PKEY_METHOD *standard_methods[] =
81 #ifndef OPENSSL_NO_RSA
87 #ifndef OPENSSL_NO_DSA
100 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
103 static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
104 const EVP_PKEY_METHOD * const *b)
106 return ((*a)->pkey_id - (*b)->pkey_id);
109 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
112 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
115 const EVP_PKEY_METHOD *t = &tmp, **ret;
117 if (app_pkey_methods)
120 idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
122 return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
124 ret = OBJ_bsearch_pmeth(&t, standard_methods,
125 sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *));
131 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
134 const EVP_PKEY_METHOD *pmeth;
137 if (!pkey || !pkey->ameth)
139 id = pkey->ameth->pkey_id;
141 #ifndef OPENSSL_NO_ENGINE
142 if (pkey && pkey->engine)
144 /* Try to find an ENGINE which implements this method */
149 EVPerr(EVP_F_INT_CTX_NEW,ERR_R_ENGINE_LIB);
154 e = ENGINE_get_pkey_meth_engine(id);
156 /* If an ENGINE handled this method look it up. Othewise
157 * use internal tables.
161 pmeth = ENGINE_get_pkey_meth(e, id);
164 pmeth = EVP_PKEY_meth_find(id);
168 EVPerr(EVP_F_INT_CTX_NEW,EVP_R_UNSUPPORTED_ALGORITHM);
172 ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
175 #ifndef OPENSSL_NO_ENGINE
179 EVPerr(EVP_F_INT_CTX_NEW,ERR_R_MALLOC_FAILURE);
184 ret->operation = EVP_PKEY_OP_UNDEFINED;
189 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
194 if (pmeth->init(ret) <= 0)
196 EVP_PKEY_CTX_free(ret);
204 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
206 EVP_PKEY_METHOD *pmeth;
207 pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
211 memset(pmeth, 0, sizeof(EVP_PKEY_METHOD));
214 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
219 pmeth->paramgen_init = 0;
221 pmeth->keygen_init = 0;
223 pmeth->sign_init = 0;
225 pmeth->verify_init = 0;
227 pmeth->verify_recover_init = 0;
228 pmeth->verify_recover = 0;
229 pmeth->signctx_init = 0;
231 pmeth->verifyctx_init = 0;
232 pmeth->verifyctx = 0;
233 pmeth->encrypt_init = 0;
235 pmeth->decrypt_init = 0;
237 pmeth->derive_init = 0;
245 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
246 const EVP_PKEY_METHOD *meth)
249 *ppkey_id = meth->pkey_id;
251 *pflags = meth->flags;
254 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
257 dst->init = src->init;
258 dst->copy = src->copy;
259 dst->cleanup = src->cleanup;
261 dst->paramgen_init = src->paramgen_init;
262 dst->paramgen = src->paramgen;
264 dst->keygen_init = src->keygen_init;
265 dst->keygen = src->keygen;
267 dst->sign_init = src->sign_init;
268 dst->sign = src->sign;
270 dst->verify_init = src->verify_init;
271 dst->verify = src->verify;
273 dst->verify_recover_init = src->verify_recover_init;
274 dst->verify_recover = src->verify_recover;
276 dst->signctx_init = src->signctx_init;
277 dst->signctx = src->signctx;
279 dst->verifyctx_init = src->verifyctx_init;
280 dst->verifyctx = src->verifyctx;
282 dst->encrypt_init = src->encrypt_init;
283 dst->encrypt = src->encrypt;
285 dst->decrypt_init = src->decrypt_init;
286 dst->decrypt = src->decrypt;
288 dst->derive_init = src->derive_init;
289 dst->derive = src->derive;
291 dst->ctrl = src->ctrl;
292 dst->ctrl_str = src->ctrl_str;
295 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
297 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
301 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
303 return int_ctx_new(pkey, e, -1);
306 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
308 return int_ctx_new(NULL, e, id);
311 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
314 if (!pctx->pmeth || !pctx->pmeth->copy)
316 #ifndef OPENSSL_NO_ENGINE
317 /* Make sure it's safe to copy a pkey context using an ENGINE */
318 if (pctx->engine && !ENGINE_init(pctx->engine))
320 EVPerr(EVP_F_EVP_PKEY_CTX_DUP,ERR_R_ENGINE_LIB);
324 rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
328 rctx->pmeth = pctx->pmeth;
329 #ifndef OPENSSL_NO_ENGINE
330 rctx->engine = pctx->engine;
334 CRYPTO_add(&pctx->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
336 rctx->pkey = pctx->pkey;
339 CRYPTO_add(&pctx->peerkey->references,1,CRYPTO_LOCK_EVP_PKEY);
341 rctx->peerkey = pctx->peerkey;
344 rctx->app_data = NULL;
345 rctx->operation = pctx->operation;
347 if (pctx->pmeth->copy(rctx, pctx) > 0)
350 EVP_PKEY_CTX_free(rctx);
355 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
357 if (app_pkey_methods == NULL)
359 app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
360 if (!app_pkey_methods)
363 if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
365 sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
369 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
373 if (ctx->pmeth && ctx->pmeth->cleanup)
374 ctx->pmeth->cleanup(ctx);
376 EVP_PKEY_free(ctx->pkey);
378 EVP_PKEY_free(ctx->peerkey);
379 #ifndef OPENSSL_NO_ENGINE
381 /* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
382 * functional reference we held for this reason. */
383 ENGINE_finish(ctx->engine);
388 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
389 int cmd, int p1, void *p2)
392 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
394 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
397 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
400 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
402 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
406 if ((optype != -1) && !(ctx->operation & optype))
408 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
412 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
415 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
421 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
422 const char *name, const char *value)
424 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
426 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
427 EVP_R_COMMAND_NOT_SUPPORTED);
430 if (!strcmp(name, "digest"))
433 if (!value || !(md = EVP_get_digestbyname(value)))
435 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
436 EVP_R_INVALID_DIGEST);
439 return EVP_PKEY_CTX_set_signature_md(ctx, md);
441 return ctx->pmeth->ctrl_str(ctx, name, value);
444 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
446 return ctx->operation;
449 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
451 ctx->keygen_info = dat;
452 ctx->keygen_info_count = datlen;
455 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
460 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
465 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
470 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
475 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
477 ctx->app_data = data;
480 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
482 return ctx->app_data;
485 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
486 int (*init)(EVP_PKEY_CTX *ctx))
491 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
492 int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src))
497 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
498 void (*cleanup)(EVP_PKEY_CTX *ctx))
500 pmeth->cleanup = cleanup;
503 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
504 int (*paramgen_init)(EVP_PKEY_CTX *ctx),
505 int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
507 pmeth->paramgen_init = paramgen_init;
508 pmeth->paramgen = paramgen;
511 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
512 int (*keygen_init)(EVP_PKEY_CTX *ctx),
513 int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
515 pmeth->keygen_init = keygen_init;
516 pmeth->keygen = keygen;
519 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
520 int (*sign_init)(EVP_PKEY_CTX *ctx),
521 int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
522 const unsigned char *tbs, size_t tbslen))
524 pmeth->sign_init = sign_init;
528 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
529 int (*verify_init)(EVP_PKEY_CTX *ctx),
530 int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
531 const unsigned char *tbs, size_t tbslen))
533 pmeth->verify_init = verify_init;
534 pmeth->verify = verify;
537 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
538 int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
539 int (*verify_recover)(EVP_PKEY_CTX *ctx,
540 unsigned char *sig, size_t *siglen,
541 const unsigned char *tbs, size_t tbslen))
543 pmeth->verify_recover_init = verify_recover_init;
544 pmeth->verify_recover = verify_recover;
547 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
548 int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
549 int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
552 pmeth->signctx_init = signctx_init;
553 pmeth->signctx = signctx;
556 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
557 int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
558 int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen,
561 pmeth->verifyctx_init = verifyctx_init;
562 pmeth->verifyctx = verifyctx;
565 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
566 int (*encrypt_init)(EVP_PKEY_CTX *ctx),
567 int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
568 const unsigned char *in, size_t inlen))
570 pmeth->encrypt_init = encrypt_init;
571 pmeth->encrypt = encryptfn;
574 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
575 int (*decrypt_init)(EVP_PKEY_CTX *ctx),
576 int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
577 const unsigned char *in, size_t inlen))
579 pmeth->decrypt_init = decrypt_init;
580 pmeth->decrypt = decrypt;
583 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
584 int (*derive_init)(EVP_PKEY_CTX *ctx),
585 int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen))
587 pmeth->derive_init = derive_init;
588 pmeth->derive = derive;
591 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
592 int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
593 int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value))
596 pmeth->ctrl_str = ctrl_str;