[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>
#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;

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

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

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(EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
			     pmeth_cmp);

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