2 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
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 "internal/cryptlib.h"
62 #include <openssl/objects.h>
63 #include <openssl/evp.h>
64 #include "internal/evp_int.h"
66 #define M_check_autoarg(ctx, arg, arglen, err) \
67 if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) \
69 size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
75 else if (*arglen < pksize) \
77 EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/\
82 int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
85 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
86 EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
87 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
90 ctx->operation = EVP_PKEY_OP_SIGN;
91 if (!ctx->pmeth->sign_init)
93 ret = ctx->pmeth->sign_init(ctx);
95 ctx->operation = EVP_PKEY_OP_UNDEFINED;
99 int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
100 unsigned char *sig, size_t *siglen,
101 const unsigned char *tbs, size_t tbslen)
103 if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
104 EVPerr(EVP_F_EVP_PKEY_SIGN,
105 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
108 if (ctx->operation != EVP_PKEY_OP_SIGN) {
109 EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
112 M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
113 return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
116 int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
119 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
120 EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
121 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
124 ctx->operation = EVP_PKEY_OP_VERIFY;
125 if (!ctx->pmeth->verify_init)
127 ret = ctx->pmeth->verify_init(ctx);
129 ctx->operation = EVP_PKEY_OP_UNDEFINED;
133 int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
134 const unsigned char *sig, size_t siglen,
135 const unsigned char *tbs, size_t tbslen)
137 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
138 EVPerr(EVP_F_EVP_PKEY_VERIFY,
139 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
142 if (ctx->operation != EVP_PKEY_OP_VERIFY) {
143 EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
146 return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
149 int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
152 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
153 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
154 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
157 ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
158 if (!ctx->pmeth->verify_recover_init)
160 ret = ctx->pmeth->verify_recover_init(ctx);
162 ctx->operation = EVP_PKEY_OP_UNDEFINED;
166 int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
167 unsigned char *rout, size_t *routlen,
168 const unsigned char *sig, size_t siglen)
170 if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
171 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
172 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
175 if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
176 EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
179 M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
180 return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
183 int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
186 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
187 EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
188 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
191 ctx->operation = EVP_PKEY_OP_ENCRYPT;
192 if (!ctx->pmeth->encrypt_init)
194 ret = ctx->pmeth->encrypt_init(ctx);
196 ctx->operation = EVP_PKEY_OP_UNDEFINED;
200 int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
201 unsigned char *out, size_t *outlen,
202 const unsigned char *in, size_t inlen)
204 if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
205 EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
206 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
209 if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
210 EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
213 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
214 return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
217 int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
220 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
221 EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
222 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
225 ctx->operation = EVP_PKEY_OP_DECRYPT;
226 if (!ctx->pmeth->decrypt_init)
228 ret = ctx->pmeth->decrypt_init(ctx);
230 ctx->operation = EVP_PKEY_OP_UNDEFINED;
234 int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
235 unsigned char *out, size_t *outlen,
236 const unsigned char *in, size_t inlen)
238 if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
239 EVPerr(EVP_F_EVP_PKEY_DECRYPT,
240 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
243 if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
244 EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
247 M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
248 return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
251 int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
254 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
255 EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
256 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
259 ctx->operation = EVP_PKEY_OP_DERIVE;
260 if (!ctx->pmeth->derive_init)
262 ret = ctx->pmeth->derive_init(ctx);
264 ctx->operation = EVP_PKEY_OP_UNDEFINED;
268 int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
271 if (!ctx || !ctx->pmeth
272 || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
273 || !ctx->pmeth->ctrl) {
274 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
275 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
278 if (ctx->operation != EVP_PKEY_OP_DERIVE
279 && ctx->operation != EVP_PKEY_OP_ENCRYPT
280 && ctx->operation != EVP_PKEY_OP_DECRYPT) {
281 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
282 EVP_R_OPERATON_NOT_INITIALIZED);
286 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
295 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
299 if (ctx->pkey->type != peer->type) {
300 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
305 * ran@cryptocom.ru: For clarity. The error is if parameters in peer are
306 * present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
307 * 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
308 * (different key types) is impossible here because it is checked earlier.
309 * -2 is OK for us here, as well as 1, so we can check for 0 only.
311 if (!EVP_PKEY_missing_parameters(peer) &&
312 !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
313 EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
317 EVP_PKEY_free(ctx->peerkey);
320 ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
327 CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
331 int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
333 if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
334 EVPerr(EVP_F_EVP_PKEY_DERIVE,
335 EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
338 if (ctx->operation != EVP_PKEY_OP_DERIVE) {
339 EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
342 M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
343 return ctx->pmeth->derive(ctx, key, pkeylen);