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).
61 #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;
72 static const EVP_PKEY_METHOD *standard_methods[] =
79 static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
80 const EVP_PKEY_METHOD * const *b)
82 return ((*a)->pkey_id - (*b)->pkey_id);
85 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e)
87 EVP_PKEY_METHOD tmp, *t = &tmp, **ret;
92 idx = sk_find(app_pkey_methods, (char *)&tmp);
94 return (EVP_PKEY_METHOD *)
95 sk_value(app_pkey_methods, idx);
97 ret = (EVP_PKEY_METHOD **) OBJ_bsearch((char *)&t,
98 (char *)standard_methods,
99 sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
100 sizeof(EVP_PKEY_METHOD *),
101 (int (*)(const void *, const void *))pmeth_cmp);
107 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
110 const EVP_PKEY_METHOD *pmeth;
113 if (!pkey || !pkey->ameth)
115 id = pkey->ameth->pkey_id;
117 pmeth = EVP_PKEY_meth_find(id, e);
120 ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
122 ret->operation = EVP_PKEY_OP_UNDEFINED;
126 CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
131 if (pmeth->init(ret) <= 0)
133 EVP_PKEY_CTX_free(ret);
141 EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
143 EVP_PKEY_METHOD *pmeth;
144 pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
149 pmeth->flags = flags | EVP_PKEY_DYNAMIC;
153 pmeth->paramgen_init = 0;
155 pmeth->keygen_init = 0;
157 pmeth->sign_init = 0;
159 pmeth->verify_init = 0;
161 pmeth->verify_recover_init = 0;
162 pmeth->verify_recover = 0;
163 pmeth->signctx_init = 0;
165 pmeth->verifyctx_init = 0;
166 pmeth->verifyctx = 0;
167 pmeth->encrypt_init = 0;
169 pmeth->decrypt_init = 0;
171 pmeth->derive_init = 0;
179 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
181 if (pmeth && (pmeth->flags & EVP_PKEY_DYNAMIC))
185 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
187 return int_ctx_new(pkey, e, -1);
190 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
192 return int_ctx_new(NULL, e, id);
195 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
197 if (app_pkey_methods == NULL)
199 app_pkey_methods = sk_new((sk_cmp_fn_type *)pmeth_cmp);
200 if (!app_pkey_methods)
203 if (!sk_push(app_pkey_methods, (char *)pmeth))
205 sk_sort(app_pkey_methods);
209 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
211 if (ctx->pmeth && ctx->pmeth->cleanup)
212 ctx->pmeth->cleanup(ctx);
214 EVP_PKEY_free(ctx->pkey);
216 EVP_PKEY_free(ctx->peerkey);
220 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
221 int cmd, int p1, void *p2)
224 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
226 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
229 if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
232 if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
234 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
238 if ((optype != -1) && !(ctx->operation & optype))
240 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
244 ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
247 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
253 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
254 const char *name, const char *value)
256 if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
258 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
259 EVP_R_COMMAND_NOT_SUPPORTED);
262 if (!strcmp(name, "digest"))
265 if (!value || !(md = EVP_get_digestbyname(value)))
267 EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
268 EVP_R_INVALID_DIGEST);
271 return EVP_PKEY_CTX_set_signature_md(ctx, md);
273 return ctx->pmeth->ctrl_str(ctx, name, value);
276 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
281 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
286 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
288 ctx->app_data = data;
291 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
293 return ctx->app_data;
296 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
297 int (*init)(EVP_PKEY_CTX *ctx))
302 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
303 void (*cleanup)(EVP_PKEY_CTX *ctx))
305 pmeth->cleanup = cleanup;
308 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
309 int (*paramgen_init)(EVP_PKEY_CTX *ctx),
310 int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
312 pmeth->paramgen_init = paramgen_init;
313 pmeth->paramgen = paramgen;
316 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
317 int (*keygen_init)(EVP_PKEY_CTX *ctx),
318 int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
320 pmeth->keygen_init = keygen_init;
321 pmeth->keygen = keygen;
324 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
325 int (*sign_init)(EVP_PKEY_CTX *ctx),
326 int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
327 const unsigned char *tbs, int tbslen))
329 pmeth->sign_init = sign_init;
333 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
334 int (*verify_init)(EVP_PKEY_CTX *ctx),
335 int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, int siglen,
336 const unsigned char *tbs, int tbslen))
338 pmeth->verify_init = verify_init;
339 pmeth->verify = verify;
342 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
343 int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
344 int (*verify_recover)(EVP_PKEY_CTX *ctx,
345 unsigned char *sig, int *siglen,
346 const unsigned char *tbs, int tbslen))
348 pmeth->verify_recover_init = verify_recover_init;
349 pmeth->verify_recover = verify_recover;
352 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
353 int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
354 int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, int *siglen,
357 pmeth->signctx_init = signctx_init;
358 pmeth->signctx = signctx;
361 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
362 int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
363 int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen,
366 pmeth->verifyctx_init = verifyctx_init;
367 pmeth->verifyctx = verifyctx;
370 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
371 int (*encrypt_init)(EVP_PKEY_CTX *ctx),
372 int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, int *outlen,
373 const unsigned char *in, int inlen))
375 pmeth->encrypt_init = encrypt_init;
376 pmeth->encrypt = encrypt;
379 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
380 int (*decrypt_init)(EVP_PKEY_CTX *ctx),
381 int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, int *outlen,
382 const unsigned char *in, int inlen))
384 pmeth->decrypt_init = decrypt_init;
385 pmeth->decrypt = decrypt;
388 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
389 int (*derive_init)(EVP_PKEY_CTX *ctx),
390 int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, int *keylen))
392 pmeth->derive_init = derive_init;
393 pmeth->derive = derive;
396 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
397 int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
398 int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value))
401 pmeth->ctrl_str = ctrl_str;