3 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
6 /* ====================================================================
7 * Copyright (c) 2006 The OpenSSL Project. All rights reserved.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in
18 * the documentation and/or other materials provided with the
21 * 3. All advertising materials mentioning features or use of this
22 * software must display the following acknowledgment:
23 * "This product includes software developed by the OpenSSL Project
24 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
26 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
27 * endorse or promote products derived from this software without
28 * prior written permission. For written permission, please contact
29 * licensing@OpenSSL.org.
31 * 5. Products derived from this software may not be called "OpenSSL"
32 * nor may "OpenSSL" appear in their names without prior written
33 * permission of the OpenSSL Project.
35 * 6. Redistributions of any form whatsoever must retain the following
37 * "This product includes software developed by the OpenSSL Project
38 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
40 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
41 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
43 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
44 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
45 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
46 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
47 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
49 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
50 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
51 * OF THE POSSIBILITY OF SUCH DAMAGE.
52 * ====================================================================
54 * This product includes cryptographic software written by Eric Young
55 * (eay@cryptsoft.com). This product includes software written by Tim
56 * Hudson (tjh@cryptsoft.com).
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
67 #define M_check_autoarg(ctx, arg, arglen, err) \
68 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
69 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
72 EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/ \
79 if (*arglen < pksize) { \
80 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \
85 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
88 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
89 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
90 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
93 ctx->operation = EVP_PKEY_OP_SIGN;
94 if (!ctx->pmeth->sign_init)
96 ret = ctx->pmeth->sign_init(ctx);
98 ctx->operation = EVP_PKEY_OP_UNDEFINED;
102 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
103 unsigned char *sig, size_t *siglen,
104 const unsigned char *tbs, size_t tbslen)
106 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
107 EVPerr(EVP_F_EVP_PKEY_SIGN,
108 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
111 if (ctx->operation != EVP_PKEY_OP_SIGN) {
112 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
115 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
116 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
119 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
122 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
123 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
124 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
127 ctx->operation = EVP_PKEY_OP_VERIFY;
128 if (!ctx->pmeth->verify_init)
130 ret = ctx->pmeth->verify_init(ctx);
132 ctx->operation = EVP_PKEY_OP_UNDEFINED;
136 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
137 const unsigned char *sig, size_t siglen,
138 const unsigned char *tbs, size_t tbslen)
140 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
141 EVPerr(EVP_F_EVP_PKEY_VERIFY,
142 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
145 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
146 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
149 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
152 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
155 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
156 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
157 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
160 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
161 if (!ctx->pmeth->verify_recover_init)
163 ret = ctx->pmeth->verify_recover_init(ctx);
165 ctx->operation = EVP_PKEY_OP_UNDEFINED;
169 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
170 unsigned char *rout, size_t *routlen,
171 const unsigned char *sig, size_t siglen)
173 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
174 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
175 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
178 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
179 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
182 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
183 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
186 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
189 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
190 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
191 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
194 ctx->operation = EVP_PKEY_OP_ENCRYPT;
195 if (!ctx->pmeth->encrypt_init)
197 ret = ctx->pmeth->encrypt_init(ctx);
199 ctx->operation = EVP_PKEY_OP_UNDEFINED;
203 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
204 unsigned char *out, size_t *outlen,
205 const unsigned char *in, size_t inlen)
207 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
208 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
209 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
212 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
213 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
216 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
217 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
220 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
223 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
224 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
225 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
228 ctx->operation = EVP_PKEY_OP_DECRYPT;
229 if (!ctx->pmeth->decrypt_init)
231 ret = ctx->pmeth->decrypt_init(ctx);
233 ctx->operation = EVP_PKEY_OP_UNDEFINED;
237 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
238 unsigned char *out, size_t *outlen,
239 const unsigned char *in, size_t inlen)
241 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
242 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
243 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
246 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
247 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
250 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
251 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
254 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
257 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
258 EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
259 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
262 ctx->operation = EVP_PKEY_OP_DERIVE;
263 if (!ctx->pmeth->derive_init)
265 ret = ctx->pmeth->derive_init(ctx);
267 ctx->operation = EVP_PKEY_OP_UNDEFINED;
271 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
274 if (!ctx || !ctx->pmeth
275 || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
276 || !ctx->pmeth->ctrl) {
277 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
278 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
281 if (ctx->operation != EVP_PKEY_OP_DERIVE
282 && ctx->operation != EVP_PKEY_OP_ENCRYPT
283 && ctx->operation != EVP_PKEY_OP_DECRYPT) {
284 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
285 EVP_R_OPERATON_NOT_INITIALIZED);
289 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
298 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
302 if (ctx->pkey->type != peer->type) {
303 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
308 * ran@cryptocom.ru: For clarity. The error is if parameters in peer are
309 * present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
310 * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
311 * (different key types) is impossible here because it is checked earlier.
312 * -2 is OK for us here, as well as 1, so we can check for 0 only.
314 if (!EVP_PKEY_missing_parameters(peer) &&
315 !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
316 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
321 EVP_PKEY_free(ctx->peerkey);
324 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
331 CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
335 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
337 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
338 EVPerr(EVP_F_EVP_PKEY_DERIVE,
339 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
342 if (ctx->operation != EVP_PKEY_OP_DERIVE) {
343 EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
346 M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
347 return ctx->pmeth->derive(ctx, key, pkeylen);