[thirdparty/openssl.git] / crypto / evp / pmeth_lib.c

/* pmeth_lib.c */
/* Written by Dr Stephen N Henson (shenson@bigfoot.com) 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 "asn1_locl.h"
#include "evp_locl.h"

typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
STACK *app_pkey_methods = NULL;

extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth, ec_pkey_meth;

static const EVP_PKEY_METHOD *standard_methods[] =
	{
	&rsa_pkey_meth,
	&dh_pkey_meth,
	&dsa_pkey_meth,
	&ec_pkey_meth
	};

static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
                const EVP_PKEY_METHOD * const *b)
	{
        return ((*a)->pkey_id - (*b)->pkey_id);
	}

const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type, ENGINE *e)
	{
	EVP_PKEY_METHOD tmp, *t = &tmp, **ret;
	tmp.pkey_id = type;
	if (app_pkey_methods)
		{
		int idx;
		idx = sk_find(app_pkey_methods, (char *)&tmp);
		if (idx >= 0)
			return (EVP_PKEY_METHOD *)
				sk_value(app_pkey_methods, idx);
		}
	ret = (EVP_PKEY_METHOD **) OBJ_bsearch((char *)&t,
        		(char *)standard_methods,
			sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
        		sizeof(EVP_PKEY_METHOD *),
			(int (*)(const void *, const void *))pmeth_cmp);
	if (!ret || !*ret)
		return NULL;
	return *ret;
	}

static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
	{
	EVP_PKEY_CTX *ret;
	const EVP_PKEY_METHOD *pmeth;
	if (id == -1)
		{
		if (!pkey || !pkey->ameth)
			return NULL;
		id = pkey->ameth->pkey_id;
		}
	pmeth = EVP_PKEY_meth_find(id, e);
	if (pmeth == NULL)
		return NULL;
	ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
	ret->pmeth = pmeth;
	ret->operation = EVP_PKEY_OP_UNDEFINED;
	ret->pkey = pkey;
	ret->peerkey = NULL;
	if (pkey)
		CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
	ret->data = NULL;

	if (pmeth->init)
		{
		if (pmeth->init(ret) <= 0)
			{
			EVP_PKEY_CTX_free(ret);
			return NULL;
			}
		}

	return ret;
	}

EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
	{
	EVP_PKEY_METHOD *pmeth;
	pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
	if (!pmeth)
		return NULL;

	pmeth->pkey_id = id;
	pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;

	pmeth->init = 0;
	pmeth->cleanup = 0;
	pmeth->paramgen_init = 0;
	pmeth->paramgen = 0;
	pmeth->keygen_init = 0;
	pmeth->keygen = 0;
	pmeth->sign_init = 0;
	pmeth->sign = 0;
	pmeth->verify_init = 0;
	pmeth->verify = 0;
	pmeth->verify_recover_init = 0;
	pmeth->verify_recover = 0;
	pmeth->signctx_init = 0;
	pmeth->signctx = 0;
	pmeth->verifyctx_init = 0;
	pmeth->verifyctx = 0;
	pmeth->encrypt_init = 0;
	pmeth->encrypt = 0;
	pmeth->decrypt_init = 0;
	pmeth->decrypt = 0;
	pmeth->derive_init = 0;
	pmeth->derive = 0;
	pmeth->ctrl = 0;
	pmeth->ctrl_str = 0;

	return pmeth;
	}

void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
	{
	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
		OPENSSL_free(pmeth);
	}

EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
	{
	return int_ctx_new(pkey, e, -1);
	}

EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
	{
	return int_ctx_new(NULL, e, id);
	}

int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
	{
	if (app_pkey_methods == NULL)
		{
		app_pkey_methods = sk_new((sk_cmp_fn_type *)pmeth_cmp);
		if (!app_pkey_methods)
			return 0;
		}
	if (!sk_push(app_pkey_methods, (char *)pmeth))
		return 0;
	sk_sort(app_pkey_methods);
	return 1;
	}

void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
	{
	if (ctx->pmeth && ctx->pmeth->cleanup)
		ctx->pmeth->cleanup(ctx);
	if (ctx->pkey)
		EVP_PKEY_free(ctx->pkey);
	if (ctx->peerkey)
		EVP_PKEY_free(ctx->peerkey);
	OPENSSL_free(ctx);
	}

int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
				int cmd, int p1, void *p2)
	{
	int ret;
	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl)
		{
		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
		return -2;
		}
	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
		return -1;

	if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
		{
		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
		return -1;
		}

	if ((optype != -1) && !(ctx->operation & optype))
		{
		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
		return -1;
		}

	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);

	if (ret == -2)
		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);

	return ret;

	}

int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
					const char *name, const char *value)
	{
	if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str)
		{
		EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
						EVP_R_COMMAND_NOT_SUPPORTED);
		return -2;
		}
	if (!strcmp(name, "digest"))
		{
		const EVP_MD *md;
		if (!value || !(md = EVP_get_digestbyname(value)))
			{
			EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
						EVP_R_INVALID_DIGEST);
			return 0;
			}
		return EVP_PKEY_CTX_set_signature_md(ctx, md);
		}
	return ctx->pmeth->ctrl_str(ctx, name, value);
	}

void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
	{
	ctx->data = data;
	}

void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
	{
	return ctx->data;
	}

EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
	{
	return ctx->pkey;
	}

void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
	{
	ctx->app_data = data;
	}

void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
	{
	return ctx->app_data;
	}

void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
	int (*init)(EVP_PKEY_CTX *ctx))
	{
	pmeth->init = init;
	}

void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
	void (*cleanup)(EVP_PKEY_CTX *ctx))
	{
	pmeth->cleanup = cleanup;
	}

void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
	int (*paramgen_init)(EVP_PKEY_CTX *ctx),
	int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
	{
	pmeth->paramgen_init = paramgen_init;
	pmeth->paramgen = paramgen;
	}

void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
	int (*keygen_init)(EVP_PKEY_CTX *ctx),
	int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey))
	{
	pmeth->keygen_init = keygen_init;
	pmeth->keygen = keygen;
	}

void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
	int (*sign_init)(EVP_PKEY_CTX *ctx),
	int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
					const unsigned char *tbs, size_t tbslen))
	{
	pmeth->sign_init = sign_init;
	pmeth->sign = sign;
	}

void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
	int (*verify_init)(EVP_PKEY_CTX *ctx),
	int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen,
					const unsigned char *tbs, size_t tbslen))
	{
	pmeth->verify_init = verify_init;
	pmeth->verify = verify;
	}

void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
	int (*verify_recover_init)(EVP_PKEY_CTX *ctx),
	int (*verify_recover)(EVP_PKEY_CTX *ctx,
					unsigned char *sig, size_t *siglen,
					const unsigned char *tbs, size_t tbslen))
	{
	pmeth->verify_recover_init = verify_recover_init;
	pmeth->verify_recover = verify_recover;
	}

void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
	int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
	int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
					EVP_MD_CTX *mctx))
	{
	pmeth->signctx_init = signctx_init;
	pmeth->signctx = signctx;
	}

void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
	int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx),
	int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen,
					EVP_MD_CTX *mctx))
	{
	pmeth->verifyctx_init = verifyctx_init;
	pmeth->verifyctx = verifyctx;
	}

void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
	int (*encrypt_init)(EVP_PKEY_CTX *ctx),
	int (*encrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
					const unsigned char *in, size_t inlen))
	{
	pmeth->encrypt_init = encrypt_init;
	pmeth->encrypt = encrypt;
	}

void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
	int (*decrypt_init)(EVP_PKEY_CTX *ctx),
	int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen,
					const unsigned char *in, size_t inlen))
	{
	pmeth->decrypt_init = decrypt_init;
	pmeth->decrypt = decrypt;
	}

void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
	int (*derive_init)(EVP_PKEY_CTX *ctx),
	int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen))
	{
	pmeth->derive_init = derive_init;
	pmeth->derive = derive;
	}

void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
	int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2),
	int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value))
	{
	pmeth->ctrl = ctrl;
	pmeth->ctrl_str = ctrl_str;
	}
Commit	Line	Data
0b6f3c66 DSH	1	/* pmeth_lib.c */
	2	/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
	3	* project 2006.
	4	*/
	5	/* ====================================================================
	6	* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	*
	12	* 1. Redistributions of source code must retain the above copyright
	13	* notice, this list of conditions and the following disclaimer.
	14	*
	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
	18	* distribution.
	19	*
	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/)"
	24	*
	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.
	29	*
	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.
	33	*
	34	* 6. Redistributions of any form whatsoever must retain the following
	35	* acknowledgment:
	36	* "This product includes software developed by the OpenSSL Project
	37	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	38	*
	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	* ====================================================================
	52	*
	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).
	56	*
	57	*/
	58
	59	#include <stdio.h>
	60	#include <stdlib.h>
0b6f3c66	61	#include "cryptlib.h"
c20276e4	62	#include <openssl/objects.h>
5da98aa6	63	#include <openssl/evp.h>
cd763898	64	#include "asn1_locl.h"
0b6f3c66 DSH	65	#include "evp_locl.h"
0b6f3c66 DSH	66
ba30bad5	67	typedef int sk_cmp_fn_type(const char * const a, const char const *b);
0b6f3c66 DSH	68	STACK *app_pkey_methods = NULL;
0b6f3c66 DSH	69
9ca7047d	70	extern EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth, ec_pkey_meth;
0b6f3c66	71
9e4d0f0b	72	static const EVP_PKEY_METHOD *standard_methods[] =
0b6f3c66	73	{
c927df3f	74	&rsa_pkey_meth,
3ba0885a	75	&dh_pkey_meth,
9ca7047d DSH	76	&dsa_pkey_meth,
9ca7047d DSH	77	&ec_pkey_meth
0b6f3c66 DSH	78	};
	79
	80	static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
	81	const EVP_PKEY_METHOD * const *b)
	82	{
	83	return ((a)->pkey_id - (b)->pkey_id);
	84	}
	85
	86	const EVP_PKEY_METHOD EVP_PKEY_meth_find(int type, ENGINE e)
	87	{
	88	EVP_PKEY_METHOD tmp, t = &tmp, *ret;
	89	tmp.pkey_id = type;
	90	if (app_pkey_methods)
	91	{
	92	int idx;
	93	idx = sk_find(app_pkey_methods, (char *)&tmp);
	94	if (idx >= 0)
	95	return (EVP_PKEY_METHOD *)
	96	sk_value(app_pkey_methods, idx);
	97	}
	98	ret = (EVP_PKEY_METHOD *) OBJ_bsearch((char )&t,
	99	(char *)standard_methods,
	100	sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *),
	101	sizeof(EVP_PKEY_METHOD *),
	102	(int ()(const void , const void *))pmeth_cmp);
	103	if (!ret \|\| !*ret)
	104	return NULL;
	105	return *ret;
	106	}
	107
f5cda4cb	108	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0b6f3c66 DSH	109	{
	110	EVP_PKEY_CTX *ret;
	111	const EVP_PKEY_METHOD *pmeth;
f5cda4cb DSH	112	if (id == -1)
	113	{
	114	if (!pkey \|\| !pkey->ameth)
	115	return NULL;
	116	id = pkey->ameth->pkey_id;
	117	}
	118	pmeth = EVP_PKEY_meth_find(id, e);
0b6f3c66 DSH	119	if (pmeth == NULL)
	120	return NULL;
	121	ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
	122	ret->pmeth = pmeth;
	123	ret->operation = EVP_PKEY_OP_UNDEFINED;
cd763898	124	ret->pkey = pkey;
d87e6152	125	ret->peerkey = NULL;
f5cda4cb DSH	126	if (pkey)
f5cda4cb DSH	127	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
0b6f3c66 DSH	128	ret->data = NULL;
0b6f3c66 DSH	129
5da98aa6 DSH	130	if (pmeth->init)
	131	{
	132	if (pmeth->init(ret) <= 0)
	133	{
	134	EVP_PKEY_CTX_free(ret);
	135	return NULL;
	136	}
	137	}
	138
0b6f3c66 DSH	139	return ret;
	140	}
	141
ba30bad5 DSH	142	EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
	143	{
	144	EVP_PKEY_METHOD *pmeth;
	145	pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
	146	if (!pmeth)
	147	return NULL;
	148
	149	pmeth->pkey_id = id;
b010b7c4	150	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
ba30bad5 DSH	151
	152	pmeth->init = 0;
	153	pmeth->cleanup = 0;
	154	pmeth->paramgen_init = 0;
	155	pmeth->paramgen = 0;
	156	pmeth->keygen_init = 0;
	157	pmeth->keygen = 0;
	158	pmeth->sign_init = 0;
	159	pmeth->sign = 0;
	160	pmeth->verify_init = 0;
	161	pmeth->verify = 0;
	162	pmeth->verify_recover_init = 0;
	163	pmeth->verify_recover = 0;
	164	pmeth->signctx_init = 0;
	165	pmeth->signctx = 0;
	166	pmeth->verifyctx_init = 0;
	167	pmeth->verifyctx = 0;
	168	pmeth->encrypt_init = 0;
	169	pmeth->encrypt = 0;
	170	pmeth->decrypt_init = 0;
	171	pmeth->decrypt = 0;
	172	pmeth->derive_init = 0;
	173	pmeth->derive = 0;
	174	pmeth->ctrl = 0;
	175	pmeth->ctrl_str = 0;
	176
	177	return pmeth;
	178	}
	179
	180	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
	181	{
b010b7c4	182	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
ba30bad5 DSH	183	OPENSSL_free(pmeth);
	184	}
	185
f5cda4cb DSH	186	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
	187	{
	188	return int_ctx_new(pkey, e, -1);
	189	}
	190
	191	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
	192	{
	193	return int_ctx_new(NULL, e, id);
	194	}
	195
ba30bad5 DSH	196	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
	197	{
	198	if (app_pkey_methods == NULL)
	199	{
	200	app_pkey_methods = sk_new((sk_cmp_fn_type *)pmeth_cmp);
	201	if (!app_pkey_methods)
	202	return 0;
	203	}
	204	if (!sk_push(app_pkey_methods, (char *)pmeth))
	205	return 0;
	206	sk_sort(app_pkey_methods);
	207	return 1;
	208	}
	209
5da98aa6 DSH	210	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
	211	{
	212	if (ctx->pmeth && ctx->pmeth->cleanup)
	213	ctx->pmeth->cleanup(ctx);
	214	if (ctx->pkey)
	215	EVP_PKEY_free(ctx->pkey);
ffb1ac67 DSH	216	if (ctx->peerkey)
ffb1ac67 DSH	217	EVP_PKEY_free(ctx->peerkey);
5da98aa6 DSH	218	OPENSSL_free(ctx);
	219	}
	220
0b6f3c66 DSH	221	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
	222	int cmd, int p1, void *p2)
	223	{
5da98aa6	224	int ret;
0b6f3c66	225	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl)
5da98aa6 DSH	226	{
5da98aa6 DSH	227	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
0b6f3c66	228	return -2;
5da98aa6	229	}
0b6f3c66 DSH	230	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	231	return -1;
	232
	233	if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
	234	{
5da98aa6	235	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
0b6f3c66 DSH	236	return -1;
	237	}
	238
716630c0	239	if ((optype != -1) && !(ctx->operation & optype))
0b6f3c66	240	{
5da98aa6	241	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
0b6f3c66 DSH	242	return -1;
	243	}
	244
5da98aa6	245	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
0b6f3c66	246
5da98aa6 DSH	247	if (ret == -2)
5da98aa6 DSH	248	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
0b6f3c66	249
5da98aa6	250	return ret;
0b6f3c66	251
5da98aa6	252	}
0b6f3c66	253
4a3dc3c0 DSH	254	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
4a3dc3c0 DSH	255	const char name, const char value)
f733a5ef	256	{
c927df3f	257	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str)
f733a5ef	258	{
c927df3f DSH	259	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
c927df3f DSH	260	EVP_R_COMMAND_NOT_SUPPORTED);
f733a5ef DSH	261	return -2;
f733a5ef DSH	262	}
b2a97be7 DSH	263	if (!strcmp(name, "digest"))
	264	{
	265	const EVP_MD *md;
	266	if (!value \|\| !(md = EVP_get_digestbyname(value)))
	267	{
c927df3f DSH	268	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
c927df3f DSH	269	EVP_R_INVALID_DIGEST);
b2a97be7 DSH	270	return 0;
b2a97be7 DSH	271	}
716630c0	272	return EVP_PKEY_CTX_set_signature_md(ctx, md);
b2a97be7	273	}
f733a5ef DSH	274	return ctx->pmeth->ctrl_str(ctx, name, value);
f733a5ef DSH	275	}
f5cda4cb DSH	276
	277	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
	278	{
	279	ctx->data = data;
	280	}
	281
	282	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
	283	{
	284	return ctx->data;
	285	}
	286
81cebb8b DSH	287	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
	288	{
	289	return ctx->pkey;
	290	}
	291
f5cda4cb DSH	292	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
	293	{
	294	ctx->app_data = data;
	295	}
	296
	297	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
	298	{
	299	return ctx->app_data;
	300	}
ba30bad5 DSH	301
	302	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
	303	int (init)(EVP_PKEY_CTX ctx))
	304	{
	305	pmeth->init = init;
	306	}
	307
	308	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
	309	void (cleanup)(EVP_PKEY_CTX ctx))
	310	{
	311	pmeth->cleanup = cleanup;
	312	}
	313
	314	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
	315	int (paramgen_init)(EVP_PKEY_CTX ctx),
	316	int (paramgen)(EVP_PKEY_CTX ctx, EVP_PKEY *pkey))
	317	{
	318	pmeth->paramgen_init = paramgen_init;
	319	pmeth->paramgen = paramgen;
	320	}
	321
	322	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
	323	int (keygen_init)(EVP_PKEY_CTX ctx),
	324	int (keygen)(EVP_PKEY_CTX ctx, EVP_PKEY *pkey))
	325	{
	326	pmeth->keygen_init = keygen_init;
	327	pmeth->keygen = keygen;
	328	}
	329
	330	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
	331	int (sign_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	332	int (sign)(EVP_PKEY_CTX ctx, unsigned char sig, size_t siglen,
eaff5a14 DSH	333	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	334	{
	335	pmeth->sign_init = sign_init;
	336	pmeth->sign = sign;
	337	}
	338
	339	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
	340	int (verify_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	341	int (verify)(EVP_PKEY_CTX ctx, const unsigned char *sig, size_t siglen,
eaff5a14 DSH	342	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	343	{
	344	pmeth->verify_init = verify_init;
	345	pmeth->verify = verify;
	346	}
	347
	348	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
	349	int (verify_recover_init)(EVP_PKEY_CTX ctx),
	350	int (verify_recover)(EVP_PKEY_CTX ctx,
eaff5a14 DSH	351	unsigned char sig, size_t siglen,
eaff5a14 DSH	352	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	353	{
	354	pmeth->verify_recover_init = verify_recover_init;
	355	pmeth->verify_recover = verify_recover;
	356	}
	357
	358	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
	359	int (signctx_init)(EVP_PKEY_CTX ctx, EVP_MD_CTX *mctx),
eaff5a14	360	int (signctx)(EVP_PKEY_CTX ctx, unsigned char sig, size_t siglen,
ba30bad5 DSH	361	EVP_MD_CTX *mctx))
	362	{
	363	pmeth->signctx_init = signctx_init;
	364	pmeth->signctx = signctx;
	365	}
	366
	367	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
	368	int (verifyctx_init)(EVP_PKEY_CTX ctx, EVP_MD_CTX *mctx),
	369	int (verifyctx)(EVP_PKEY_CTX ctx, const unsigned char *sig,int siglen,
	370	EVP_MD_CTX *mctx))
	371	{
	372	pmeth->verifyctx_init = verifyctx_init;
	373	pmeth->verifyctx = verifyctx;
	374	}
	375
	376	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
	377	int (encrypt_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	378	int (encrypt)(EVP_PKEY_CTX ctx, unsigned char out, size_t outlen,
eaff5a14 DSH	379	const unsigned char *in, size_t inlen))
ba30bad5 DSH	380	{
	381	pmeth->encrypt_init = encrypt_init;
	382	pmeth->encrypt = encrypt;
	383	}
	384
	385	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
	386	int (decrypt_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	387	int (decrypt)(EVP_PKEY_CTX ctx, unsigned char out, size_t outlen,
eaff5a14 DSH	388	const unsigned char *in, size_t inlen))
ba30bad5 DSH	389	{
	390	pmeth->decrypt_init = decrypt_init;
	391	pmeth->decrypt = decrypt;
	392	}
	393
	394	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
	395	int (derive_init)(EVP_PKEY_CTX ctx),
eaff5a14	396	int (derive)(EVP_PKEY_CTX ctx, unsigned char key, size_t keylen))
ba30bad5 DSH	397	{
	398	pmeth->derive_init = derive_init;
	399	pmeth->derive = derive;
	400	}
	401
	402	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
	403	int (ctrl)(EVP_PKEY_CTX ctx, int type, int p1, void *p2),
	404	int (ctrl_str)(EVP_PKEY_CTX ctx, const char type, const char value))
	405	{
	406	pmeth->ctrl = ctrl;
	407	pmeth->ctrl_str = ctrl_str;
	408	}