/src/openssl/crypto/evp/pmeth_fn.c

Source (jump to first uncovered line)
/* pmeth_fn.c */
/*
 * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
 * 2006.
 */
/* ====================================================================
 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include "cryptlib.h"
#include <openssl/objects.h>
#include <openssl/evp.h>
#include "evp_locl.h"

#define M_check_autoarg(ctx, arg, arglen, err) \
    if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) {           \
        size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey);         \
                                                                  \
        if (pksize == 0) {                                        \
            EVPerr(err, EVP_R_INVALID_KEY); /*ckerr_ignore*/      \
            return 0;                                             \
        }                                                         \
        if (!arg) {                                               \
            *arglen = pksize;                                     \
            return 1;                                             \
        }                                                         \
        if (*arglen < pksize) {                                   \
            EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /*ckerr_ignore*/ \
            return 0;                                             \
        }                                                         \
    }

int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
        EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_SIGN;
    if (!ctx->pmeth->sign_init)
        return 1;
    ret = ctx->pmeth->sign_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
                  unsigned char *sig, size_t *siglen,
                  const unsigned char *tbs, size_t tbslen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
        EVPerr(EVP_F_EVP_PKEY_SIGN,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_SIGN) {
        EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
        return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
}

int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_VERIFY;
    if (!ctx->pmeth->verify_init)
        return 1;
    ret = ctx->pmeth->verify_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_verify(EVP_PKEY_CTX *ctx,
                    const unsigned char *sig, size_t siglen,
                    const unsigned char *tbs, size_t tbslen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_VERIFY) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
}

int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
    if (!ctx->pmeth->verify_recover_init)
        return 1;
    ret = ctx->pmeth->verify_recover_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx,
                            unsigned char *rout, size_t *routlen,
                            const unsigned char *sig, size_t siglen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
        EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
        return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
}

int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
        EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_ENCRYPT;
    if (!ctx->pmeth->encrypt_init)
        return 1;
    ret = ctx->pmeth->encrypt_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
                     unsigned char *out, size_t *outlen,
                     const unsigned char *in, size_t inlen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
        EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
        EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
        return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
}

int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
        EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_DECRYPT;
    if (!ctx->pmeth->decrypt_init)
        return 1;
    ret = ctx->pmeth->decrypt_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
                     unsigned char *out, size_t *outlen,
                     const unsigned char *in, size_t inlen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
        EVPerr(EVP_F_EVP_PKEY_DECRYPT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
        EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
        return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
}

int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
{
    int ret;
    if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    ctx->operation = EVP_PKEY_OP_DERIVE;
    if (!ctx->pmeth->derive_init)
        return 1;
    ret = ctx->pmeth->derive_init(ctx);
    if (ret <= 0)
        ctx->operation = EVP_PKEY_OP_UNDEFINED;
    return ret;
}

int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer)
{
    int ret;
    if (!ctx || !ctx->pmeth
        || !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt)
        || !ctx->pmeth->ctrl) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_DERIVE
        && ctx->operation != EVP_PKEY_OP_ENCRYPT
        && ctx->operation != EVP_PKEY_OP_DECRYPT) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
               EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }

    ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);

    if (ret <= 0)
        return ret;

    if (ret == 2)
        return 1;

    if (!ctx->pkey) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
        return -1;
    }

    if (ctx->pkey->type != peer->type) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
        return -1;
    }

    /*
     * ran@cryptocom.ru: For clarity.  The error is if parameters in peer are
     * present (!missing) but don't match.  EVP_PKEY_cmp_parameters may return
     * 1 (match), 0 (don't match) and -2 (comparison is not defined).  -1
     * (different key types) is impossible here because it is checked earlier.
     * -2 is OK for us here, as well as 1, so we can check for 0 only.
     */
    if (!EVP_PKEY_missing_parameters(peer) &&
        !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
        return -1;
    }

    if (ctx->peerkey)
        EVP_PKEY_free(ctx->peerkey);
    ctx->peerkey = peer;

    ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);

    if (ret <= 0) {
        ctx->peerkey = NULL;
        return ret;
    }

    CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
    return 1;
}

int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *pkeylen)
{
    if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE,
               EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
        return -2;
    }
    if (ctx->operation != EVP_PKEY_OP_DERIVE) {
        EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
        return -1;
    }
    M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
        return ctx->pmeth->derive(ctx, key, pkeylen);
}

Coverage Report

Created: 2022-11-30 06:20

Line	Count	Source (jump to first uncovered line)
1		/* pmeth_fn.c */
2		/*
3		* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
4		* 2006.
5		*/
6		/* ====================================================================
7		* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		*
13		* 1. Redistributions of source code must retain the above copyright
14		* notice, this list of conditions and the following disclaimer.
15		*
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
19		* distribution.
20		*
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/)"
25		*
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.
30		*
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.
34		*
35		* 6. Redistributions of any form whatsoever must retain the following
36		* acknowledgment:
37		* "This product includes software developed by the OpenSSL Project
38		* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
39		*
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		* ====================================================================
53		*
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).
57		*
58		*/
59
60		#include <stdio.h>
61		#include <stdlib.h>
62		#include "cryptlib.h"
63		#include <openssl/objects.h>
64		#include <openssl/evp.h>
65		#include "evp_locl.h"
66
67		#define M_check_autoarg(ctx, arg, arglen, err) \
68	0	if (ctx->pmeth->flags & EVP_PKEY_FLAG_AUTOARGLEN) { \
69	0	size_t pksize = (size_t)EVP_PKEY_size(ctx->pkey); \
70	0	\
71	0	if (pksize == 0) { \
72	0	EVPerr(err, EVP_R_INVALID_KEY); /ckerr_ignore/ \
73	0	return 0; \
74	0	} \
75	0	if (!arg) { \
76	0	*arglen = pksize; \
77	0	return 1; \
78	0	} \
79	0	if (*arglen < pksize) { \
80	0	EVPerr(err, EVP_R_BUFFER_TOO_SMALL); /ckerr_ignore/ \
81	0	return 0; \
82	0	} \
83	0	}
84
85		int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx)
86	0	{
87	0	int ret;
88	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->sign) {
89	0	EVPerr(EVP_F_EVP_PKEY_SIGN_INIT,
90	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
91	0	return -2;
92	0	}
93	0	ctx->operation = EVP_PKEY_OP_SIGN;
94	0	if (!ctx->pmeth->sign_init)
95	0	return 1;
96	0	ret = ctx->pmeth->sign_init(ctx);
97	0	if (ret <= 0)
98	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
99	0	return ret;
100	0	}
101
102		int EVP_PKEY_sign(EVP_PKEY_CTX *ctx,
103		unsigned char sig, size_t siglen,
104		const unsigned char *tbs, size_t tbslen)
105	0	{
106	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->sign) {
107	0	EVPerr(EVP_F_EVP_PKEY_SIGN,
108	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
109	0	return -2;
110	0	}
111	0	if (ctx->operation != EVP_PKEY_OP_SIGN) {
112	0	EVPerr(EVP_F_EVP_PKEY_SIGN, EVP_R_OPERATON_NOT_INITIALIZED);
113	0	return -1;
114	0	}
115	0	M_check_autoarg(ctx, sig, siglen, EVP_F_EVP_PKEY_SIGN)
116	0	return ctx->pmeth->sign(ctx, sig, siglen, tbs, tbslen);
117	0	}
118
119		int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx)
120	0	{
121	0	int ret;
122	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->verify) {
123	0	EVPerr(EVP_F_EVP_PKEY_VERIFY_INIT,
124	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
125	0	return -2;
126	0	}
127	0	ctx->operation = EVP_PKEY_OP_VERIFY;
128	0	if (!ctx->pmeth->verify_init)
129	0	return 1;
130	0	ret = ctx->pmeth->verify_init(ctx);
131	0	if (ret <= 0)
132	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
133	0	return ret;
134	0	}
135
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)
139	0	{
140	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->verify) {
141	0	EVPerr(EVP_F_EVP_PKEY_VERIFY,
142	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
143	0	return -2;
144	0	}
145	0	if (ctx->operation != EVP_PKEY_OP_VERIFY) {
146	0	EVPerr(EVP_F_EVP_PKEY_VERIFY, EVP_R_OPERATON_NOT_INITIALIZED);
147	0	return -1;
148	0	}
149	0	return ctx->pmeth->verify(ctx, sig, siglen, tbs, tbslen);
150	0	}
151
152		int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx)
153	0	{
154	0	int ret;
155	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->verify_recover) {
156	0	EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER_INIT,
157	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
158	0	return -2;
159	0	}
160	0	ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
161	0	if (!ctx->pmeth->verify_recover_init)
162	0	return 1;
163	0	ret = ctx->pmeth->verify_recover_init(ctx);
164	0	if (ret <= 0)
165	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
166	0	return ret;
167	0	}
168
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)
172	0	{
173	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->verify_recover) {
174	0	EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER,
175	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
176	0	return -2;
177	0	}
178	0	if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
179	0	EVPerr(EVP_F_EVP_PKEY_VERIFY_RECOVER, EVP_R_OPERATON_NOT_INITIALIZED);
180	0	return -1;
181	0	}
182	0	M_check_autoarg(ctx, rout, routlen, EVP_F_EVP_PKEY_VERIFY_RECOVER)
183	0	return ctx->pmeth->verify_recover(ctx, rout, routlen, sig, siglen);
184	0	}
185
186		int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx)
187	0	{
188	0	int ret;
189	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->encrypt) {
190	0	EVPerr(EVP_F_EVP_PKEY_ENCRYPT_INIT,
191	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
192	0	return -2;
193	0	}
194	0	ctx->operation = EVP_PKEY_OP_ENCRYPT;
195	0	if (!ctx->pmeth->encrypt_init)
196	0	return 1;
197	0	ret = ctx->pmeth->encrypt_init(ctx);
198	0	if (ret <= 0)
199	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
200	0	return ret;
201	0	}
202
203		int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx,
204		unsigned char out, size_t outlen,
205		const unsigned char *in, size_t inlen)
206	0	{
207	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->encrypt) {
208	0	EVPerr(EVP_F_EVP_PKEY_ENCRYPT,
209	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
210	0	return -2;
211	0	}
212	0	if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
213	0	EVPerr(EVP_F_EVP_PKEY_ENCRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
214	0	return -1;
215	0	}
216	0	M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_ENCRYPT)
217	0	return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
218	0	}
219
220		int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx)
221	0	{
222	0	int ret;
223	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->decrypt) {
224	0	EVPerr(EVP_F_EVP_PKEY_DECRYPT_INIT,
225	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
226	0	return -2;
227	0	}
228	0	ctx->operation = EVP_PKEY_OP_DECRYPT;
229	0	if (!ctx->pmeth->decrypt_init)
230	0	return 1;
231	0	ret = ctx->pmeth->decrypt_init(ctx);
232	0	if (ret <= 0)
233	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
234	0	return ret;
235	0	}
236
237		int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx,
238		unsigned char out, size_t outlen,
239		const unsigned char *in, size_t inlen)
240	0	{
241	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->decrypt) {
242	0	EVPerr(EVP_F_EVP_PKEY_DECRYPT,
243	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
244	0	return -2;
245	0	}
246	0	if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
247	0	EVPerr(EVP_F_EVP_PKEY_DECRYPT, EVP_R_OPERATON_NOT_INITIALIZED);
248	0	return -1;
249	0	}
250	0	M_check_autoarg(ctx, out, outlen, EVP_F_EVP_PKEY_DECRYPT)
251	0	return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
252	0	}
253
254		int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx)
255	0	{
256	0	int ret;
257	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->derive) {
258	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_INIT,
259	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
260	0	return -2;
261	0	}
262	0	ctx->operation = EVP_PKEY_OP_DERIVE;
263	0	if (!ctx->pmeth->derive_init)
264	0	return 1;
265	0	ret = ctx->pmeth->derive_init(ctx);
266	0	if (ret <= 0)
267	0	ctx->operation = EVP_PKEY_OP_UNDEFINED;
268	0	return ret;
269	0	}
270
271		int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX ctx, EVP_PKEY peer)
272	0	{
273	0	int ret;
274	0	if (!ctx \|\| !ctx->pmeth
275	0	\|\| !(ctx->pmeth->derive \|\| ctx->pmeth->encrypt \|\| ctx->pmeth->decrypt)
276	0	\|\| !ctx->pmeth->ctrl) {
277	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
278	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
279	0	return -2;
280	0	}
281	0	if (ctx->operation != EVP_PKEY_OP_DERIVE
282	0	&& ctx->operation != EVP_PKEY_OP_ENCRYPT
283	0	&& ctx->operation != EVP_PKEY_OP_DECRYPT) {
284	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER,
285	0	EVP_R_OPERATON_NOT_INITIALIZED);
286	0	return -1;
287	0	}
288
289	0	ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
290
291	0	if (ret <= 0)
292	0	return ret;
293
294	0	if (ret == 2)
295	0	return 1;
296
297	0	if (!ctx->pkey) {
298	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_NO_KEY_SET);
299	0	return -1;
300	0	}
301
302	0	if (ctx->pkey->type != peer->type) {
303	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_KEY_TYPES);
304	0	return -1;
305	0	}
306
307		/*
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.
313		*/
314	0	if (!EVP_PKEY_missing_parameters(peer) &&
315	0	!EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
316	0	EVPerr(EVP_F_EVP_PKEY_DERIVE_SET_PEER, EVP_R_DIFFERENT_PARAMETERS);
317	0	return -1;
318	0	}
319
320	0	if (ctx->peerkey)
321	0	EVP_PKEY_free(ctx->peerkey);
322	0	ctx->peerkey = peer;
323
324	0	ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
325
326	0	if (ret <= 0) {
327	0	ctx->peerkey = NULL;
328	0	return ret;
329	0	}
330
331	0	CRYPTO_add(&peer->references, 1, CRYPTO_LOCK_EVP_PKEY);
332	0	return 1;
333	0	}
334
335		int EVP_PKEY_derive(EVP_PKEY_CTX ctx, unsigned char key, size_t *pkeylen)
336	0	{
337	0	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->derive) {
338	0	EVPerr(EVP_F_EVP_PKEY_DERIVE,
339	0	EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
340	0	return -2;
341	0	}
342	0	if (ctx->operation != EVP_PKEY_OP_DERIVE) {
343	0	EVPerr(EVP_F_EVP_PKEY_DERIVE, EVP_R_OPERATON_NOT_INITIALIZED);
344	0	return -1;
345	0	}
346	0	M_check_autoarg(ctx, key, pkeylen, EVP_F_EVP_PKEY_DERIVE)
347	0	return ctx->pmeth->derive(ctx, key, pkeylen);
348	0	}