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

/* pmeth_lib.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>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#include "asn1_locl.h"
#include "evp_locl.h"

typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);

DECLARE_STACK_OF(EVP_PKEY_METHOD)
STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;

extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth, cmac_pkey_meth;
extern const EVP_PKEY_METHOD dhx_pkey_meth;

static const EVP_PKEY_METHOD *standard_methods[] =
	{
#ifndef OPENSSL_NO_RSA
	&rsa_pkey_meth,
#endif
#ifndef OPENSSL_NO_DH
	&dh_pkey_meth,
#endif
#ifndef OPENSSL_NO_DSA
	&dsa_pkey_meth,
#endif
#ifndef OPENSSL_NO_EC
	&ec_pkey_meth,
#endif
	&hmac_pkey_meth,
	&cmac_pkey_meth,
#ifndef OPENSSL_NO_DH
	&dhx_pkey_meth
#endif
	};

DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
			   pmeth);

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

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
			     pmeth);

const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
	{
	EVP_PKEY_METHOD tmp;
	const EVP_PKEY_METHOD *t = &tmp, **ret;
	tmp.pkey_id = type;
	if (app_pkey_methods)
		{
		int idx;
		idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
		if (idx >= 0)
			return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
		}
	ret = OBJ_bsearch_pmeth(&t, standard_methods,
			  sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *));
	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;
		}
#ifndef OPENSSL_NO_ENGINE
	if (pkey && pkey->engine)
		e = pkey->engine;
	/* Try to find an ENGINE which implements this method */
	if (e)
		{
		if (!ENGINE_init(e))
			{
			EVPerr(EVP_F_INT_CTX_NEW,ERR_R_ENGINE_LIB);
			return NULL;
			}
		}
	else
		e = ENGINE_get_pkey_meth_engine(id);

	/* If an ENGINE handled this method look it up. Othewise
	 * use internal tables.
	 */

	if (e)
		pmeth = ENGINE_get_pkey_meth(e, id);
	else
#endif
		pmeth = EVP_PKEY_meth_find(id);

	if (pmeth == NULL)
		{
		EVPerr(EVP_F_INT_CTX_NEW,EVP_R_UNSUPPORTED_ALGORITHM);
		return NULL;
		}

	ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
	if (!ret)
		{
#ifndef OPENSSL_NO_ENGINE
		if (e)
			ENGINE_finish(e);
#endif
		EVPerr(EVP_F_INT_CTX_NEW,ERR_R_MALLOC_FAILURE);
		return NULL;
		}
	ret->engine = e;
	ret->pmeth = pmeth;
	ret->operation = EVP_PKEY_OP_UNDEFINED;
	ret->pkey = pkey;
	ret->peerkey = NULL;
	ret->pkey_gencb = 0;
	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;

	memset(pmeth, 0, sizeof(EVP_PKEY_METHOD));

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

	pmeth->init = 0;
	pmeth->copy = 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_get0_info(int *ppkey_id, int *pflags,
				const EVP_PKEY_METHOD *meth)
	{
	if (ppkey_id)
		*ppkey_id = meth->pkey_id;
	if (pflags)
		*pflags = meth->flags;
	}

void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
	{

	dst->init = src->init;
	dst->copy = src->copy;
	dst->cleanup = src->cleanup;

	dst->paramgen_init = src->paramgen_init;
	dst->paramgen = src->paramgen;

	dst->keygen_init = src->keygen_init;
	dst->keygen = src->keygen;

	dst->sign_init = src->sign_init;
	dst->sign = src->sign;

	dst->verify_init = src->verify_init;
	dst->verify = src->verify;

	dst->verify_recover_init = src->verify_recover_init;
	dst->verify_recover = src->verify_recover;

	dst->signctx_init = src->signctx_init;
	dst->signctx = src->signctx;

	dst->verifyctx_init = src->verifyctx_init;
	dst->verifyctx = src->verifyctx;

	dst->encrypt_init = src->encrypt_init;
	dst->encrypt = src->encrypt;

	dst->decrypt_init = src->decrypt_init;
	dst->decrypt = src->decrypt;

	dst->derive_init = src->derive_init;
	dst->derive = src->derive;

	dst->ctrl = src->ctrl;
	dst->ctrl_str = src->ctrl_str;
	}

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);
	}

EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
	{
	EVP_PKEY_CTX *rctx;
	if (!pctx->pmeth || !pctx->pmeth->copy)
		return NULL;
#ifndef OPENSSL_NO_ENGINE
	/* Make sure it's safe to copy a pkey context using an ENGINE */
	if (pctx->engine && !ENGINE_init(pctx->engine))
		{
		EVPerr(EVP_F_EVP_PKEY_CTX_DUP,ERR_R_ENGINE_LIB);
		return 0;
		}
#endif
	rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
	if (!rctx)
		return NULL;

	rctx->pmeth = pctx->pmeth;
#ifndef OPENSSL_NO_ENGINE
	rctx->engine = pctx->engine;
#endif

	if (pctx->pkey)
		CRYPTO_add(&pctx->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);

	rctx->pkey = pctx->pkey;

	if (pctx->peerkey)
		CRYPTO_add(&pctx->peerkey->references,1,CRYPTO_LOCK_EVP_PKEY);

	rctx->peerkey = pctx->peerkey;

	rctx->data = NULL;
	rctx->app_data = NULL;
	rctx->operation = pctx->operation;

	if (pctx->pmeth->copy(rctx, pctx) > 0)
		return rctx;

	EVP_PKEY_CTX_free(rctx);
	return NULL;

	}

int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
	{
	if (app_pkey_methods == NULL)
		{
		app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
		if (!app_pkey_methods)
			return 0;
		}
	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
		return 0;
	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
	return 1;
	}

void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
	{
	if (ctx == NULL)
		return;
	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);
#ifndef OPENSSL_NO_ENGINE
	if(ctx->engine)
		/* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
		 * functional reference we held for this reason. */
		ENGINE_finish(ctx->engine);
#endif
	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);
	}

int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
	{
	return ctx->operation;
	}

void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
	{
	ctx->keygen_info = dat;
	ctx->keygen_info_count = datlen;
	}

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;
	}

EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
	{
	return ctx->peerkey;
	}
	
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_copy(EVP_PKEY_METHOD *pmeth,
	int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src))
	{
	pmeth->copy = copy;
	}

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

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	1	/* pmeth_lib.c */
2e597528	2	/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
0b6f3c66 DSH	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>
c9777d26 DSH	64	#ifndef OPENSSL_NO_ENGINE
	65	#include <openssl/engine.h>
	66	#endif
cd763898	67	#include "asn1_locl.h"
0b6f3c66 DSH	68	#include "evp_locl.h"
0b6f3c66 DSH	69
ba30bad5	70	typedef int sk_cmp_fn_type(const char * const a, const char const *b);
5ce278a7	71
d4cdbab9	72	DECLARE_STACK_OF(EVP_PKEY_METHOD)
5ce278a7	73	STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
0b6f3c66	74
74633553	75	extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth;
c8ef656d	76	extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth, cmac_pkey_meth;
afb14cda	77	extern const EVP_PKEY_METHOD dhx_pkey_meth;
0b6f3c66	78
9e4d0f0b	79	static const EVP_PKEY_METHOD *standard_methods[] =
0b6f3c66	80	{
d4f0339c	81	#ifndef OPENSSL_NO_RSA
c927df3f	82	&rsa_pkey_meth,
d4f0339c DSH	83	#endif
d4f0339c DSH	84	#ifndef OPENSSL_NO_DH
3ba0885a	85	&dh_pkey_meth,
d4f0339c DSH	86	#endif
d4f0339c DSH	87	#ifndef OPENSSL_NO_DSA
9ca7047d	88	&dsa_pkey_meth,
d4f0339c	89	#endif
ef236ec3	90	#ifndef OPENSSL_NO_EC
74633553	91	&ec_pkey_meth,
ef236ec3	92	#endif
74633553	93	&hmac_pkey_meth,
afb14cda DSH	94	&cmac_pkey_meth,
	95	#ifndef OPENSSL_NO_DH
	96	&dhx_pkey_meth
	97	#endif
0b6f3c66 DSH	98	};
0b6f3c66 DSH	99
606f6c47	100	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
e19106f5	101	pmeth);
babb3798	102
0b6f3c66	103	static int pmeth_cmp(const EVP_PKEY_METHOD * const *a,
babb3798	104	const EVP_PKEY_METHOD * const *b)
0b6f3c66 DSH	105	{
	106	return ((a)->pkey_id - (b)->pkey_id);
	107	}
	108
606f6c47	109	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD , const EVP_PKEY_METHOD ,
e19106f5	110	pmeth);
babb3798	111
c9777d26	112	const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
0b6f3c66	113	{
606f6c47 DSH	114	EVP_PKEY_METHOD tmp;
606f6c47 DSH	115	const EVP_PKEY_METHOD t = &tmp, *ret;
0b6f3c66 DSH	116	tmp.pkey_id = type;
	117	if (app_pkey_methods)
	118	{
	119	int idx;
5ce278a7	120	idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
0b6f3c66	121	if (idx >= 0)
5ce278a7	122	return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
0b6f3c66	123	}
e19106f5 DSH	124	ret = OBJ_bsearch_pmeth(&t, standard_methods,
e19106f5 DSH	125	sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *));
0b6f3c66 DSH	126	if (!ret \|\| !*ret)
	127	return NULL;
	128	return *ret;
	129	}
	130
f5cda4cb	131	static EVP_PKEY_CTX int_ctx_new(EVP_PKEY pkey, ENGINE *e, int id)
0b6f3c66 DSH	132	{
	133	EVP_PKEY_CTX *ret;
	134	const EVP_PKEY_METHOD *pmeth;
f5cda4cb DSH	135	if (id == -1)
	136	{
	137	if (!pkey \|\| !pkey->ameth)
	138	return NULL;
	139	id = pkey->ameth->pkey_id;
	140	}
a63bf2c5	141	#ifndef OPENSSL_NO_ENGINE
ad889de0 DSH	142	if (pkey && pkey->engine)
ad889de0 DSH	143	e = pkey->engine;
c9777d26 DSH	144	/* Try to find an ENGINE which implements this method */
	145	if (e)
	146	{
	147	if (!ENGINE_init(e))
	148	{
	149	EVPerr(EVP_F_INT_CTX_NEW,ERR_R_ENGINE_LIB);
	150	return NULL;
	151	}
c9777d26	152	}
1892c8bf DSH	153	else
1892c8bf DSH	154	e = ENGINE_get_pkey_meth_engine(id);
c9777d26 DSH	155
c9777d26 DSH	156	/* If an ENGINE handled this method look it up. Othewise
5e428e7d	157	* use internal tables.
c9777d26 DSH	158	*/
	159
	160	if (e)
	161	pmeth = ENGINE_get_pkey_meth(e, id);
	162	else
a63bf2c5	163	#endif
c9777d26 DSH	164	pmeth = EVP_PKEY_meth_find(id);
c9777d26 DSH	165
0b6f3c66	166	if (pmeth == NULL)
01b8b3c7 DSH	167	{
01b8b3c7 DSH	168	EVPerr(EVP_F_INT_CTX_NEW,EVP_R_UNSUPPORTED_ALGORITHM);
0b6f3c66	169	return NULL;
01b8b3c7	170	}
c9777d26	171
0b6f3c66	172	ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
1892c8bf DSH	173	if (!ret)
1892c8bf DSH	174	{
a63bf2c5	175	#ifndef OPENSSL_NO_ENGINE
1892c8bf DSH	176	if (e)
1892c8bf DSH	177	ENGINE_finish(e);
a63bf2c5	178	#endif
1892c8bf DSH	179	EVPerr(EVP_F_INT_CTX_NEW,ERR_R_MALLOC_FAILURE);
	180	return NULL;
	181	}
c9777d26	182	ret->engine = e;
0b6f3c66 DSH	183	ret->pmeth = pmeth;
0b6f3c66 DSH	184	ret->operation = EVP_PKEY_OP_UNDEFINED;
cd763898	185	ret->pkey = pkey;
d87e6152	186	ret->peerkey = NULL;
efcf5f1c	187	ret->pkey_gencb = 0;
f5cda4cb DSH	188	if (pkey)
f5cda4cb DSH	189	CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
0b6f3c66 DSH	190	ret->data = NULL;
0b6f3c66 DSH	191
5da98aa6 DSH	192	if (pmeth->init)
	193	{
	194	if (pmeth->init(ret) <= 0)
	195	{
	196	EVP_PKEY_CTX_free(ret);
	197	return NULL;
	198	}
	199	}
	200
0b6f3c66 DSH	201	return ret;
	202	}
	203
ba30bad5 DSH	204	EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags)
	205	{
	206	EVP_PKEY_METHOD *pmeth;
	207	pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD));
	208	if (!pmeth)
	209	return NULL;
	210
3231e42d DSH	211	memset(pmeth, 0, sizeof(EVP_PKEY_METHOD));
3231e42d DSH	212
ba30bad5	213	pmeth->pkey_id = id;
b010b7c4	214	pmeth->flags = flags \| EVP_PKEY_FLAG_DYNAMIC;
ba30bad5 DSH	215
ba30bad5 DSH	216	pmeth->init = 0;
8bdcef40	217	pmeth->copy = 0;
ba30bad5 DSH	218	pmeth->cleanup = 0;
	219	pmeth->paramgen_init = 0;
	220	pmeth->paramgen = 0;
	221	pmeth->keygen_init = 0;
	222	pmeth->keygen = 0;
	223	pmeth->sign_init = 0;
	224	pmeth->sign = 0;
	225	pmeth->verify_init = 0;
	226	pmeth->verify = 0;
	227	pmeth->verify_recover_init = 0;
	228	pmeth->verify_recover = 0;
	229	pmeth->signctx_init = 0;
	230	pmeth->signctx = 0;
	231	pmeth->verifyctx_init = 0;
	232	pmeth->verifyctx = 0;
	233	pmeth->encrypt_init = 0;
	234	pmeth->encrypt = 0;
	235	pmeth->decrypt_init = 0;
	236	pmeth->decrypt = 0;
	237	pmeth->derive_init = 0;
	238	pmeth->derive = 0;
	239	pmeth->ctrl = 0;
	240	pmeth->ctrl_str = 0;
	241
	242	return pmeth;
	243	}
	244
f830c68f DSH	245	void EVP_PKEY_meth_get0_info(int ppkey_id, int pflags,
	246	const EVP_PKEY_METHOD *meth)
	247	{
	248	if (ppkey_id)
	249	*ppkey_id = meth->pkey_id;
	250	if (pflags)
	251	*pflags = meth->flags;
	252	}
	253
	254	void EVP_PKEY_meth_copy(EVP_PKEY_METHOD dst, const EVP_PKEY_METHOD src)
	255	{
	256
	257	dst->init = src->init;
	258	dst->copy = src->copy;
	259	dst->cleanup = src->cleanup;
	260
	261	dst->paramgen_init = src->paramgen_init;
	262	dst->paramgen = src->paramgen;
	263
	264	dst->keygen_init = src->keygen_init;
	265	dst->keygen = src->keygen;
	266
	267	dst->sign_init = src->sign_init;
	268	dst->sign = src->sign;
	269
	270	dst->verify_init = src->verify_init;
	271	dst->verify = src->verify;
	272
	273	dst->verify_recover_init = src->verify_recover_init;
	274	dst->verify_recover = src->verify_recover;
	275
	276	dst->signctx_init = src->signctx_init;
	277	dst->signctx = src->signctx;
	278
	279	dst->verifyctx_init = src->verifyctx_init;
	280	dst->verifyctx = src->verifyctx;
	281
	282	dst->encrypt_init = src->encrypt_init;
	283	dst->encrypt = src->encrypt;
	284
	285	dst->decrypt_init = src->decrypt_init;
	286	dst->decrypt = src->decrypt;
	287
	288	dst->derive_init = src->derive_init;
	289	dst->derive = src->derive;
	290
	291	dst->ctrl = src->ctrl;
	292	dst->ctrl_str = src->ctrl_str;
	293	}
	294
ba30bad5 DSH	295	void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
ba30bad5 DSH	296	{
b010b7c4	297	if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
ba30bad5 DSH	298	OPENSSL_free(pmeth);
	299	}
	300
f5cda4cb DSH	301	EVP_PKEY_CTX EVP_PKEY_CTX_new(EVP_PKEY pkey, ENGINE *e)
	302	{
	303	return int_ctx_new(pkey, e, -1);
	304	}
	305
	306	EVP_PKEY_CTX EVP_PKEY_CTX_new_id(int id, ENGINE e)
	307	{
	308	return int_ctx_new(NULL, e, id);
	309	}
	310
8bdcef40 DSH	311	EVP_PKEY_CTX EVP_PKEY_CTX_dup(EVP_PKEY_CTX pctx)
	312	{
	313	EVP_PKEY_CTX *rctx;
	314	if (!pctx->pmeth \|\| !pctx->pmeth->copy)
	315	return NULL;
c9777d26 DSH	316	#ifndef OPENSSL_NO_ENGINE
	317	/* Make sure it's safe to copy a pkey context using an ENGINE */
	318	if (pctx->engine && !ENGINE_init(pctx->engine))
	319	{
	320	EVPerr(EVP_F_EVP_PKEY_CTX_DUP,ERR_R_ENGINE_LIB);
	321	return 0;
	322	}
	323	#endif
8bdcef40 DSH	324	rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
	325	if (!rctx)
	326	return NULL;
	327
	328	rctx->pmeth = pctx->pmeth;
c9777d26 DSH	329	#ifndef OPENSSL_NO_ENGINE
	330	rctx->engine = pctx->engine;
	331	#endif
8bdcef40 DSH	332
8bdcef40 DSH	333	if (pctx->pkey)
8bdcef40	334	CRYPTO_add(&pctx->pkey->references,1,CRYPTO_LOCK_EVP_PKEY);
944f8580 DSH	335
944f8580 DSH	336	rctx->pkey = pctx->pkey;
8bdcef40 DSH	337
8bdcef40 DSH	338	if (pctx->peerkey)
8bdcef40	339	CRYPTO_add(&pctx->peerkey->references,1,CRYPTO_LOCK_EVP_PKEY);
944f8580 DSH	340
944f8580 DSH	341	rctx->peerkey = pctx->peerkey;
8bdcef40 DSH	342
	343	rctx->data = NULL;
	344	rctx->app_data = NULL;
	345	rctx->operation = pctx->operation;
	346
	347	if (pctx->pmeth->copy(rctx, pctx) > 0)
944f8580	348	return rctx;
8bdcef40 DSH	349
	350	EVP_PKEY_CTX_free(rctx);
	351	return NULL;
	352
	353	}
	354
ba30bad5 DSH	355	int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
	356	{
	357	if (app_pkey_methods == NULL)
	358	{
5ce278a7	359	app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
ba30bad5 DSH	360	if (!app_pkey_methods)
	361	return 0;
	362	}
5ce278a7	363	if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
ba30bad5	364	return 0;
5ce278a7	365	sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
ba30bad5 DSH	366	return 1;
	367	}
	368
5da98aa6 DSH	369	void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
5da98aa6 DSH	370	{
0d5ac5a7 NL	371	if (ctx == NULL)
0d5ac5a7 NL	372	return;
5da98aa6 DSH	373	if (ctx->pmeth && ctx->pmeth->cleanup)
	374	ctx->pmeth->cleanup(ctx);
	375	if (ctx->pkey)
	376	EVP_PKEY_free(ctx->pkey);
ffb1ac67 DSH	377	if (ctx->peerkey)
ffb1ac67 DSH	378	EVP_PKEY_free(ctx->peerkey);
c9777d26 DSH	379	#ifndef OPENSSL_NO_ENGINE
	380	if(ctx->engine)
	381	/* The EVP_PKEY_CTX we used belongs to an ENGINE, release the
	382	* functional reference we held for this reason. */
	383	ENGINE_finish(ctx->engine);
	384	#endif
5da98aa6 DSH	385	OPENSSL_free(ctx);
	386	}
	387
0b6f3c66 DSH	388	int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
	389	int cmd, int p1, void *p2)
	390	{
5da98aa6	391	int ret;
0b6f3c66	392	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl)
5da98aa6 DSH	393	{
5da98aa6 DSH	394	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
0b6f3c66	395	return -2;
5da98aa6	396	}
0b6f3c66 DSH	397	if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
	398	return -1;
	399
	400	if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
	401	{
5da98aa6	402	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
0b6f3c66 DSH	403	return -1;
	404	}
	405
716630c0	406	if ((optype != -1) && !(ctx->operation & optype))
0b6f3c66	407	{
5da98aa6	408	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
0b6f3c66 DSH	409	return -1;
	410	}
	411
5da98aa6	412	ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
0b6f3c66	413
5da98aa6 DSH	414	if (ret == -2)
5da98aa6 DSH	415	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
0b6f3c66	416
5da98aa6	417	return ret;
0b6f3c66	418
5da98aa6	419	}
0b6f3c66	420
4a3dc3c0 DSH	421	int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
4a3dc3c0 DSH	422	const char name, const char value)
f733a5ef	423	{
c927df3f	424	if (!ctx \|\| !ctx->pmeth \|\| !ctx->pmeth->ctrl_str)
f733a5ef	425	{
c927df3f DSH	426	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
c927df3f DSH	427	EVP_R_COMMAND_NOT_SUPPORTED);
f733a5ef DSH	428	return -2;
f733a5ef DSH	429	}
b2a97be7 DSH	430	if (!strcmp(name, "digest"))
	431	{
	432	const EVP_MD *md;
	433	if (!value \|\| !(md = EVP_get_digestbyname(value)))
	434	{
c927df3f DSH	435	EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR,
c927df3f DSH	436	EVP_R_INVALID_DIGEST);
b2a97be7 DSH	437	return 0;
b2a97be7 DSH	438	}
716630c0	439	return EVP_PKEY_CTX_set_signature_md(ctx, md);
b2a97be7	440	}
f733a5ef DSH	441	return ctx->pmeth->ctrl_str(ctx, name, value);
f733a5ef DSH	442	}
f5cda4cb	443
b28dea4e DSH	444	int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
	445	{
	446	return ctx->operation;
	447	}
	448
	449	void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX ctx, int dat, int datlen)
	450	{
	451	ctx->keygen_info = dat;
	452	ctx->keygen_info_count = datlen;
	453	}
	454
f5cda4cb DSH	455	void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX ctx, void data)
	456	{
	457	ctx->data = data;
	458	}
	459
	460	void EVP_PKEY_CTX_get_data(EVP_PKEY_CTX ctx)
	461	{
	462	return ctx->data;
	463	}
	464
81cebb8b DSH	465	EVP_PKEY EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX ctx)
	466	{
	467	return ctx->pkey;
	468	}
	469
0e1dba93 DSH	470	EVP_PKEY EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX ctx)
	471	{
	472	return ctx->peerkey;
	473	}
	474
f5cda4cb DSH	475	void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX ctx, void data)
	476	{
	477	ctx->app_data = data;
	478	}
	479
	480	void EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX ctx)
	481	{
	482	return ctx->app_data;
	483	}
ba30bad5 DSH	484
	485	void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
	486	int (init)(EVP_PKEY_CTX ctx))
	487	{
	488	pmeth->init = init;
8bdcef40 DSH	489	}
	490
	491	void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
	492	int (copy)(EVP_PKEY_CTX dst, EVP_PKEY_CTX *src))
	493	{
	494	pmeth->copy = copy;
ba30bad5 DSH	495	}
	496
	497	void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
	498	void (cleanup)(EVP_PKEY_CTX ctx))
	499	{
	500	pmeth->cleanup = cleanup;
	501	}
	502
	503	void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
	504	int (paramgen_init)(EVP_PKEY_CTX ctx),
	505	int (paramgen)(EVP_PKEY_CTX ctx, EVP_PKEY *pkey))
	506	{
	507	pmeth->paramgen_init = paramgen_init;
	508	pmeth->paramgen = paramgen;
	509	}
	510
	511	void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
	512	int (keygen_init)(EVP_PKEY_CTX ctx),
	513	int (keygen)(EVP_PKEY_CTX ctx, EVP_PKEY *pkey))
	514	{
	515	pmeth->keygen_init = keygen_init;
	516	pmeth->keygen = keygen;
	517	}
	518
	519	void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
	520	int (sign_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	521	int (sign)(EVP_PKEY_CTX ctx, unsigned char sig, size_t siglen,
eaff5a14 DSH	522	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	523	{
	524	pmeth->sign_init = sign_init;
	525	pmeth->sign = sign;
	526	}
	527
	528	void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
	529	int (verify_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	530	int (verify)(EVP_PKEY_CTX ctx, const unsigned char *sig, size_t siglen,
eaff5a14 DSH	531	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	532	{
	533	pmeth->verify_init = verify_init;
	534	pmeth->verify = verify;
	535	}
	536
	537	void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
	538	int (verify_recover_init)(EVP_PKEY_CTX ctx),
	539	int (verify_recover)(EVP_PKEY_CTX ctx,
eaff5a14 DSH	540	unsigned char sig, size_t siglen,
eaff5a14 DSH	541	const unsigned char *tbs, size_t tbslen))
ba30bad5 DSH	542	{
	543	pmeth->verify_recover_init = verify_recover_init;
	544	pmeth->verify_recover = verify_recover;
	545	}
	546
	547	void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
	548	int (signctx_init)(EVP_PKEY_CTX ctx, EVP_MD_CTX *mctx),
eaff5a14	549	int (signctx)(EVP_PKEY_CTX ctx, unsigned char sig, size_t siglen,
ba30bad5 DSH	550	EVP_MD_CTX *mctx))
	551	{
	552	pmeth->signctx_init = signctx_init;
	553	pmeth->signctx = signctx;
	554	}
	555
	556	void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
	557	int (verifyctx_init)(EVP_PKEY_CTX ctx, EVP_MD_CTX *mctx),
	558	int (verifyctx)(EVP_PKEY_CTX ctx, const unsigned char *sig,int siglen,
	559	EVP_MD_CTX *mctx))
	560	{
	561	pmeth->verifyctx_init = verifyctx_init;
	562	pmeth->verifyctx = verifyctx;
	563	}
	564
	565	void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
	566	int (encrypt_init)(EVP_PKEY_CTX ctx),
b3f34078	567	int (encryptfn)(EVP_PKEY_CTX ctx, unsigned char out, size_t outlen,
eaff5a14	568	const unsigned char *in, size_t inlen))
ba30bad5 DSH	569	{
ba30bad5 DSH	570	pmeth->encrypt_init = encrypt_init;
b3f34078	571	pmeth->encrypt = encryptfn;
ba30bad5 DSH	572	}
	573
	574	void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
	575	int (decrypt_init)(EVP_PKEY_CTX ctx),
eaff5a14 DSH	576	int (decrypt)(EVP_PKEY_CTX ctx, unsigned char out, size_t outlen,
eaff5a14 DSH	577	const unsigned char *in, size_t inlen))
ba30bad5 DSH	578	{
	579	pmeth->decrypt_init = decrypt_init;
	580	pmeth->decrypt = decrypt;
	581	}
	582
	583	void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
	584	int (derive_init)(EVP_PKEY_CTX ctx),
eaff5a14	585	int (derive)(EVP_PKEY_CTX ctx, unsigned char key, size_t keylen))
ba30bad5 DSH	586	{
	587	pmeth->derive_init = derive_init;
	588	pmeth->derive = derive;
	589	}
	590
	591	void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
	592	int (ctrl)(EVP_PKEY_CTX ctx, int type, int p1, void *p2),
	593	int (ctrl_str)(EVP_PKEY_CTX ctx, const char type, const char value))
	594	{
	595	pmeth->ctrl = ctrl;
	596	pmeth->ctrl_str = ctrl_str;
	597	}