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).
62 #include "internal/cryptlib.h"
63 #include <openssl/objects.h>
64 #include <openssl/evp.h>
65 #include "internal/evp_int.h"
67 #define M_check_autoarg(ctx, arg, arglen, err) \
68 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \
70 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
76 else if (*arglen < pksize) \
78 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
83 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
86 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
87 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
88 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
91 ctx->operation = EVP_PKEY_OP_SIGN;
92 if (!ctx->pmeth->sign_init)
94 ret = ctx->pmeth->sign_init(ctx);
96 ctx->operation = EVP_PKEY_OP_UNDEFINED;
100 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
101 unsigned char *sig, size_t *siglen,
102 const unsigned char *tbs, size_t tbslen)
104 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
105 EVPerr(EVP_F_EVP_PKEY_SIGN,
106 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
109 if (ctx->operation != EVP_PKEY_OP_SIGN) {
110 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
113 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
114 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
117 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
120 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
121 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
122 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
125 ctx->operation = EVP_PKEY_OP_VERIFY;
126 if (!ctx->pmeth->verify_init)
128 ret = ctx->pmeth->verify_init(ctx);
130 ctx->operation = EVP_PKEY_OP_UNDEFINED;
134 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
135 const unsigned char *sig, size_t siglen,
136 const unsigned char *tbs, size_t tbslen)
138 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
139 EVPerr(EVP_F_EVP_PKEY_VERIFY,
140 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
143 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
144 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
147 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
150 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
153 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
154 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
155 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
158 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
159 if (!ctx->pmeth->verify_recover_init)
161 ret = ctx->pmeth->verify_recover_init(ctx);
163 ctx->operation = EVP_PKEY_OP_UNDEFINED;
167 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
168 unsigned char *rout, size_t *routlen,
169 const unsigned char *sig, size_t siglen)
171 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
172 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
173 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
176 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
177 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
180 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
181 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
184 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
187 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
188 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
189 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
192 ctx->operation = EVP_PKEY_OP_ENCRYPT;
193 if (!ctx->pmeth->encrypt_init)
195 ret = ctx->pmeth->encrypt_init(ctx);
197 ctx->operation = EVP_PKEY_OP_UNDEFINED;
201 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
202 unsigned char *out, size_t *outlen,
203 const unsigned char *in, size_t inlen)
205 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
206 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
207 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
210 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
211 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
214 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
215 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
218 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
221 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
222 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
223 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
226 ctx->operation = EVP_PKEY_OP_DECRYPT;
227 if (!ctx->pmeth->decrypt_init)
229 ret = ctx->pmeth->decrypt_init(ctx);
231 ctx->operation = EVP_PKEY_OP_UNDEFINED;
235 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
236 unsigned char *out, size_t *outlen,
237 const unsigned char *in, size_t inlen)
239 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
240 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
241 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
244 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
245 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
248 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
249 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
252 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
255 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
256 EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
257 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
260 ctx->operation = EVP_PKEY_OP_DERIVE;
261 if (!ctx->pmeth->derive_init)
263 ret = ctx->pmeth->derive_init(ctx);
265 ctx->operation = EVP_PKEY_OP_UNDEFINED;
269 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
272 if (!ctx || !ctx->pmeth
273 || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
274 || !ctx->pmeth->ctrl) {
275 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
276 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
279 if (ctx->operation != EVP_PKEY_OP_DERIVE
280 && ctx->operation != EVP_PKEY_OP_ENCRYPT
281 && ctx->operation != EVP_PKEY_OP_DECRYPT) {
282 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
283 EVP_R_OPERATON_NOT_INITIALIZED);
287 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
296 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
300 if (ctx->pkey->type != peer->type) {
301 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
306 * ran@cryptocom.ru: For clarity. The error is if parameters in peer are
307 * present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
308 * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
309 * (different key types) is impossible here because it is checked earlier.
310 * -2 is OK for us here, as well as 1, so we can check for 0 only.
312 if (!EVP_PKEY_missing_parameters(peer) &&
313 !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
314 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
318 EVP_PKEY_free(ctx->peerkey);
321 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
328 CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
332 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
334 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
335 EVPerr(EVP_F_EVP_PKEY_DERIVE,
336 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
339 if (ctx->operation != EVP_PKEY_OP_DERIVE) {
340 EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
343 M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
344 return ctx->pmeth->derive(ctx, key, pkeylen);