2 /* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 #include "asn1_locl.h"
67 typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
68 STACK *app_pkey_methods = NULL;
70 extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth, ec_pkey_meth;
72 static const EVP_PKEY_METHOD *standard_methods[] =
80 static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
81 const EVP_PKEY_METHOD * const *b)
83 return ((*a)->pkey_id - (*b)->pkey_id);
86 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e)
88 EVP_PKEY_METHOD tmp, *t = &tmp, **ret;
93 idx = sk_find(app_pkey_methods, (char *)&tmp);
95 return (EVP_PKEY_METHOD *)
96 sk_value(app_pkey_methods, idx);
98 ret = (EVP_PKEY_METHOD **) OBJ_bsearch((char *)&t,
99 (char *)standard_methods,
100 sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
101 sizeof(EVP_PKEY_METHOD *),
102 (int (*)(const void *, const void *))pmeth_cmp);
108 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
111 const EVP_PKEY_METHOD *pmeth;
114 if (!pkey || !pkey->ameth)
116 id = pkey->ameth->pkey_id;
118 pmeth = EVP_PKEY_meth_find(id, e);
121 ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
123 ret->operation = EVP_PKEY_OP_UNDEFINED;
127 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
132 if (pmeth->init(ret) <= 0)
134 EVP_PKEY_CTX_free(ret);
142 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
144 EVP_PKEY_METHOD *pmeth;
145 pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
150 pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
155 pmeth->paramgen_init = 0;
157 pmeth->keygen_init = 0;
159 pmeth->sign_init = 0;
161 pmeth->verify_init = 0;
163 pmeth->verify_recover_init = 0;
164 pmeth->verify_recover = 0;
165 pmeth->signctx_init = 0;
167 pmeth->verifyctx_init = 0;
168 pmeth->verifyctx = 0;
169 pmeth->encrypt_init = 0;
171 pmeth->decrypt_init = 0;
173 pmeth->derive_init = 0;
181 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
183 if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
187 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
189 return int_ctx_new(pkey, e, -1);
192 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
194 return int_ctx_new(NULL, e, id);
197 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
200 if (!pctx->pmeth || !pctx->pmeth->copy)
202 rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
206 rctx->pmeth = pctx->pmeth;
210 CRYPTO_add(&pctx->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
211 rctx->pkey = pctx->pkey;
216 CRYPTO_add(&pctx->peerkey->references,1,CRYPTO_LOCK_EVP_PKEY);
217 rctx->peerkey = pctx->peerkey;
221 rctx->app_data = NULL;
222 rctx->operation = pctx->operation;
224 if (pctx->pmeth->copy(rctx, pctx) > 0)
227 EVP_PKEY_CTX_free(rctx);
232 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
234 if (app_pkey_methods == NULL)
236 app_pkey_methods = sk_new((sk_cmp_fn_type *)pmeth_cmp);
237 if (!app_pkey_methods)
240 if (!sk_push(app_pkey_methods, (char *)pmeth))
242 sk_sort(app_pkey_methods);
246 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
248 if (ctx->pmeth && ctx->pmeth->cleanup)
249 ctx->pmeth->cleanup(ctx);
251 EVP_PKEY_free(ctx->pkey);
253 EVP_PKEY_free(ctx->peerkey);
257 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
258 int cmd, int p1, void *p2)
261 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
263 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
266 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
269 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
271 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
275 if ((optype != -1) && !(ctx->operation & optype))
277 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
281 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
284 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
290 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
291 const char *name, const char *value)
293 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
295 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
296 EVP_R_COMMAND_NOT_SUPPORTED);
299 if (!strcmp(name, "digest"))
302 if (!value || !(md = EVP_get_digestbyname(value)))
304 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
305 EVP_R_INVALID_DIGEST);
308 return EVP_PKEY_CTX_set_signature_md(ctx, md);
310 return ctx->pmeth->ctrl_str(ctx, name, value);
313 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
318 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
323 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
328 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
330 ctx->app_data = data;
333 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
335 return ctx->app_data;
338 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
339 int (*init)(EVP_PKEY_CTX *ctx))
344 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
345 int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src))
350 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
351 void (*cleanup)(EVP_PKEY_CTX *ctx))
353 pmeth->cleanup = cleanup;
356 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
357 int (*paramgen_init)(EVP_PKEY_CTX *ctx),
358 int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
360 pmeth->paramgen_init = paramgen_init;
361 pmeth->paramgen = paramgen;
364 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
365 int (*keygen_init)(EVP_PKEY_CTX *ctx),
366 int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
368 pmeth->keygen_init = keygen_init;
369 pmeth->keygen = keygen;
372 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
373 int (*sign_init)(EVP_PKEY_CTX *ctx),
374 int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
375 const unsigned char *tbs, size_t tbslen))
377 pmeth->sign_init = sign_init;
381 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
382 int (*verify_init)(EVP_PKEY_CTX *ctx),
383 int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
384 const unsigned char *tbs, size_t tbslen))
386 pmeth->verify_init = verify_init;
387 pmeth->verify = verify;
390 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
391 int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
392 int (*verify_recover)(EVP_PKEY_CTX *ctx,
393 unsigned char *sig, size_t *siglen,
394 const unsigned char *tbs, size_t tbslen))
396 pmeth->verify_recover_init = verify_recover_init;
397 pmeth->verify_recover = verify_recover;
400 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
401 int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
402 int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
405 pmeth->signctx_init = signctx_init;
406 pmeth->signctx = signctx;
409 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
410 int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
411 int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen,
414 pmeth->verifyctx_init = verifyctx_init;
415 pmeth->verifyctx = verifyctx;
418 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
419 int (*encrypt_init)(EVP_PKEY_CTX *ctx),
420 int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
421 const unsigned char *in, size_t inlen))
423 pmeth->encrypt_init = encrypt_init;
424 pmeth->encrypt = encrypt;
427 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
428 int (*decrypt_init)(EVP_PKEY_CTX *ctx),
429 int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
430 const unsigned char *in, size_t inlen))
432 pmeth->decrypt_init = decrypt_init;
433 pmeth->decrypt = decrypt;
436 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
437 int (*derive_init)(EVP_PKEY_CTX *ctx),
438 int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen))
440 pmeth->derive_init = derive_init;
441 pmeth->derive = derive;
444 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
445 int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
446 int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value))
449 pmeth->ctrl_str = ctrl_str;