[thirdparty/openssl.git] / crypto / asn1 / ameth_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 "cryptlib.h"
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
#endif
#include "asn1_locl.h"

extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];
extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;

/* Keep this sorted in type order !! */
static const EVP_PKEY_ASN1_METHOD *standard_methods[] = 
	{
#ifndef OPENSSL_NO_RSA
	&rsa_asn1_meths[0],
	&rsa_asn1_meths[1],
#endif
#ifndef OPENSSL_NO_DH
	&dh_asn1_meth,
#endif
#ifndef OPENSSL_NO_DSA
	&dsa_asn1_meths[0],
	&dsa_asn1_meths[1],
	&dsa_asn1_meths[2],
	&dsa_asn1_meths[3],
	&dsa_asn1_meths[4],
#endif
#ifndef OPENSSL_NO_EC
	&eckey_asn1_meth,
#endif
	&hmac_asn1_meth,
	&cmac_asn1_meth,
#ifndef OPENSSL_NO_DH
	&dhx_asn1_meth
#endif
	};

typedef int sk_cmp_fn_type(const char * const *a, const char * const *b);
DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;


#ifdef TEST
void main()
	{
	int i;
	for (i = 0;
		i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
		i++)
		fprintf(stderr, "Number %d id=%d (%s)\n", i,
			standard_methods[i]->pkey_id,
			OBJ_nid2sn(standard_methods[i]->pkey_id));
	}
#endif

DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
			   const EVP_PKEY_ASN1_METHOD *, ameth);

static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a,
		     const EVP_PKEY_ASN1_METHOD * const *b)
	{
        return ((*a)->pkey_id - (*b)->pkey_id);
	}

IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
			     const EVP_PKEY_ASN1_METHOD *, ameth);

int EVP_PKEY_asn1_get_count(void)
	{
	int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
	if (app_methods)
		num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
	return num;
	}

const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
	{
	int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
	if (idx < 0)
		return NULL; 
	if (idx < num)
		return standard_methods[idx];
	idx -= num;
	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	}

static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
	{
	EVP_PKEY_ASN1_METHOD tmp;
	const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret;
	tmp.pkey_id = type;
	if (app_methods)
		{
		int idx;
		idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
		if (idx >= 0)
			return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
		}
	ret = OBJ_bsearch_ameth(&t, standard_methods,
			  sizeof(standard_methods)
			  /sizeof(EVP_PKEY_ASN1_METHOD *));
	if (!ret || !*ret)
		return NULL;
	return *ret;
	}

/* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL
 * also search through engines and set *pe to a functional reference
 * to the engine implementing 'type' or NULL if no engine implements 
 * it.
 */

const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type)
	{
	const EVP_PKEY_ASN1_METHOD *t;

	for (;;)
		{
		t = pkey_asn1_find(type);
		if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS))
			break;
		type = t->pkey_base_id;
		}
	if (pe)
		{
#ifndef OPENSSL_NO_ENGINE
		ENGINE *e;
		/* type will contain the final unaliased type */
		e = ENGINE_get_pkey_asn1_meth_engine(type);
		if (e)
			{
			*pe = e;
			return ENGINE_get_pkey_asn1_meth(e, type);
			}
#endif
		*pe = NULL;
		}
	return t;
	}

const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe,
					const char *str, int len)
	{
	int i;
	const EVP_PKEY_ASN1_METHOD *ameth;
	if (len == -1)
		len = strlen(str);
	if (pe)
		{
#ifndef OPENSSL_NO_ENGINE
		ENGINE *e;
		ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
		if (ameth)
			{
			/* Convert structural into
			 * functional reference
			 */
			if (!ENGINE_init(e))
				ameth = NULL;
			ENGINE_free(e);
			*pe = e;
			return ameth;
			}
#endif
		*pe = NULL;
		}
	for (i = 0; i < EVP_PKEY_asn1_get_count(); i++)
		{
		ameth = EVP_PKEY_asn1_get0(i);
		if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
			continue;
		if (((int)strlen(ameth->pem_str) == len) && 
			!strncasecmp(ameth->pem_str, str, len))
			return ameth;
		}
	return NULL;
	}

int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
	{
	if (app_methods == NULL)
		{
		app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
		if (!app_methods)
			return 0;
		}
	if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
		return 0;
	sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
	return 1;
	}

int EVP_PKEY_asn1_add_alias(int to, int from)
	{
	EVP_PKEY_ASN1_METHOD *ameth;
	ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
	if (!ameth)
		return 0;
	ameth->pkey_base_id = to;
	return EVP_PKEY_asn1_add0(ameth);
	}

int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, int *ppkey_flags,
				const char **pinfo, const char **ppem_str,
					const EVP_PKEY_ASN1_METHOD *ameth)
	{
	if (!ameth)
		return 0;
	if (ppkey_id)
		*ppkey_id = ameth->pkey_id;
	if (ppkey_base_id)
		*ppkey_base_id = ameth->pkey_base_id;
	if (ppkey_flags)
		*ppkey_flags = ameth->pkey_flags;
	if (pinfo)
		*pinfo = ameth->info;
	if (ppem_str)
		*ppem_str = ameth->pem_str;
	return 1;
	}

const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
	{
	return pkey->ameth;
	}

EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags,
					const char *pem_str, const char *info)
	{
	EVP_PKEY_ASN1_METHOD *ameth;
	ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD));
	if (!ameth)
		return NULL;

	memset(ameth, 0, sizeof(EVP_PKEY_ASN1_METHOD));

	ameth->pkey_id = id;
	ameth->pkey_base_id = id;
	ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC;

	if (info)
		{
		ameth->info = BUF_strdup(info);
		if (!ameth->info)
			goto err;
		}
	else
		ameth->info = NULL;

	if (pem_str)
		{
		ameth->pem_str = BUF_strdup(pem_str);
		if (!ameth->pem_str)
			goto err;
		}
	else
		ameth->pem_str = NULL;

	ameth->pub_decode = 0;
	ameth->pub_encode = 0;
	ameth->pub_cmp = 0;
	ameth->pub_print = 0;

	ameth->priv_decode = 0;
	ameth->priv_encode = 0;
	ameth->priv_print = 0;

	ameth->old_priv_encode = 0;
	ameth->old_priv_decode = 0;

	ameth->item_verify = 0;
	ameth->item_sign = 0;

	ameth->pkey_size = 0;
	ameth->pkey_bits = 0;

	ameth->param_decode = 0;
	ameth->param_encode = 0;
	ameth->param_missing = 0;
	ameth->param_copy = 0;
	ameth->param_cmp = 0;
	ameth->param_print = 0;

	ameth->pkey_free = 0;
	ameth->pkey_ctrl = 0;

	return ameth;

	err:

	EVP_PKEY_asn1_free(ameth);
	return NULL;

	}

void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, 
			const EVP_PKEY_ASN1_METHOD *src)
	{

	dst->pub_decode = src->pub_decode;
	dst->pub_encode = src->pub_encode;
	dst->pub_cmp = src->pub_cmp;
	dst->pub_print = src->pub_print;

	dst->priv_decode = src->priv_decode;
	dst->priv_encode = src->priv_encode;
	dst->priv_print = src->priv_print;

	dst->old_priv_encode = src->old_priv_encode;
	dst->old_priv_decode = src->old_priv_decode;

	dst->pkey_size = src->pkey_size;
	dst->pkey_bits = src->pkey_bits;

	dst->param_decode = src->param_decode;
	dst->param_encode = src->param_encode;
	dst->param_missing = src->param_missing;
	dst->param_copy = src->param_copy;
	dst->param_cmp = src->param_cmp;
	dst->param_print = src->param_print;

	dst->pkey_free = src->pkey_free;
	dst->pkey_ctrl = src->pkey_ctrl;

	dst->item_sign = src->item_sign;
	dst->item_verify = src->item_verify;

	}

void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
	{
	if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC))
		{
		if (ameth->pem_str)
			OPENSSL_free(ameth->pem_str);
		if (ameth->info)
			OPENSSL_free(ameth->info);
		OPENSSL_free(ameth);
		}
	}

void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
		int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub),
		int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk),
		int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
		int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent,
							ASN1_PCTX *pctx),
		int (*pkey_size)(const EVP_PKEY *pk),
		int (*pkey_bits)(const EVP_PKEY *pk))
	{
	ameth->pub_decode = pub_decode;
	ameth->pub_encode = pub_encode;
	ameth->pub_cmp = pub_cmp;
	ameth->pub_print = pub_print;
	ameth->pkey_size = pkey_size;
	ameth->pkey_bits = pkey_bits;
	}

void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
		int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf),
		int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk),
		int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
							ASN1_PCTX *pctx))
	{
	ameth->priv_decode = priv_decode;
	ameth->priv_encode = priv_encode;
	ameth->priv_print = priv_print;
	}

void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
		int (*param_decode)(EVP_PKEY *pkey,
				const unsigned char **pder, int derlen),
		int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder),
		int (*param_missing)(const EVP_PKEY *pk),
		int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from),
		int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b),
		int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
							ASN1_PCTX *pctx))
	{
	ameth->param_decode = param_decode;
	ameth->param_encode = param_encode;
	ameth->param_missing = param_missing;
	ameth->param_copy = param_copy;
	ameth->param_cmp = param_cmp;
	ameth->param_print = param_print;
	}

void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
		void (*pkey_free)(EVP_PKEY *pkey))
	{
	ameth->pkey_free = pkey_free;
	}

void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
		int (*pkey_ctrl)(EVP_PKEY *pkey, int op,
							long arg1, void *arg2))
	{
	ameth->pkey_ctrl = pkey_ctrl;
	}
Commit	Line	Data
2e597528	1	/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
448be743 DSH	2	* project 2006.
	3	*/
	4	/* ====================================================================
	5	* Copyright (c) 2006 The OpenSSL Project. All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	*
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	*
	14	* 2. Redistributions in binary form must reproduce the above copyright
	15	* notice, this list of conditions and the following disclaimer in
	16	* the documentation and/or other materials provided with the
	17	* distribution.
	18	*
	19	* 3. All advertising materials mentioning features or use of this
	20	* software must display the following acknowledgment:
	21	* "This product includes software developed by the OpenSSL Project
	22	* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
	23	*
	24	* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
	25	* endorse or promote products derived from this software without
	26	* prior written permission. For written permission, please contact
	27	* licensing@OpenSSL.org.
	28	*
	29	* 5. Products derived from this software may not be called "OpenSSL"
	30	* nor may "OpenSSL" appear in their names without prior written
	31	* permission of the OpenSSL Project.
	32	*
	33	* 6. Redistributions of any form whatsoever must retain the following
	34	* acknowledgment:
	35	* "This product includes software developed by the OpenSSL Project
	36	* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
	37	*
	38	* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
	39	* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	40	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	41	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
	42	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	43	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	44	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	45	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	46	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	47	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	48	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
	49	* OF THE POSSIBILITY OF SUCH DAMAGE.
	50	* ====================================================================
	51	*
	52	* This product includes cryptographic software written by Eric Young
	53	* (eay@cryptsoft.com). This product includes software written by Tim
	54	* Hudson (tjh@cryptsoft.com).
	55	*
	56	*/
	57
	58	#include <stdio.h>
	59	#include "cryptlib.h"
	60	#include <openssl/asn1t.h>
	61	#include <openssl/x509.h>
01b8b3c7 DSH	62	#ifndef OPENSSL_NO_ENGINE
	63	#include <openssl/engine.h>
	64	#endif
448be743 DSH	65	#include "asn1_locl.h"
	66
	67	extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[];
	68	extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[];
6f81892e	69	extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth;
afb14cda	70	extern const EVP_PKEY_ASN1_METHOD dhx_asn1_meth;
448be743	71	extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth;
74633553	72	extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth;
c8ef656d	73	extern const EVP_PKEY_ASN1_METHOD cmac_asn1_meth;
448be743 DSH	74
448be743 DSH	75	/* Keep this sorted in type order !! */
9e4d0f0b	76	static const EVP_PKEY_ASN1_METHOD *standard_methods[] =
448be743	77	{
db98bbc1	78	#ifndef OPENSSL_NO_RSA
448be743 DSH	79	&rsa_asn1_meths[0],
448be743 DSH	80	&rsa_asn1_meths[1],
db98bbc1 DSH	81	#endif
db98bbc1 DSH	82	#ifndef OPENSSL_NO_DH
6f81892e	83	&dh_asn1_meth,
db98bbc1 DSH	84	#endif
db98bbc1 DSH	85	#ifndef OPENSSL_NO_DSA
448be743 DSH	86	&dsa_asn1_meths[0],
	87	&dsa_asn1_meths[1],
	88	&dsa_asn1_meths[2],
	89	&dsa_asn1_meths[3],
	90	&dsa_asn1_meths[4],
db98bbc1 DSH	91	#endif
db98bbc1 DSH	92	#ifndef OPENSSL_NO_EC
74633553	93	&eckey_asn1_meth,
db98bbc1	94	#endif
c8ef656d	95	&hmac_asn1_meth,
afb14cda DSH	96	&cmac_asn1_meth,
	97	#ifndef OPENSSL_NO_DH
	98	&dhx_asn1_meth
	99	#endif
448be743 DSH	100	};
448be743 DSH	101
18e377b4	102	typedef int sk_cmp_fn_type(const char * const a, const char const *b);
d4cdbab9	103	DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD)
5ce278a7	104	static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
18e377b4 DSH	105
	106
	107
448be743 DSH	108	#ifdef TEST
	109	void main()
	110	{
	111	int i;
	112	for (i = 0;
	113	i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
	114	i++)
6f81892e DSH	115	fprintf(stderr, "Number %d id=%d (%s)\n", i,
	116	standard_methods[i]->pkey_id,
	117	OBJ_nid2sn(standard_methods[i]->pkey_id));
448be743 DSH	118	}
	119	#endif
	120
606f6c47	121	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
e19106f5	122	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	123
448be743	124	static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a,
babb3798	125	const EVP_PKEY_ASN1_METHOD * const *b)
448be743 DSH	126	{
	127	return ((a)->pkey_id - (b)->pkey_id);
	128	}
	129
606f6c47	130	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
e19106f5	131	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	132
e4263314 DSH	133	int EVP_PKEY_asn1_get_count(void)
	134	{
	135	int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
	136	if (app_methods)
5ce278a7	137	num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
e4263314 DSH	138	return num;
	139	}
	140
	141	const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
	142	{
	143	int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *);
	144	if (idx < 0)
	145	return NULL;
	146	if (idx < num)
	147	return standard_methods[idx];
	148	idx -= num;
5ce278a7	149	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
e4263314 DSH	150	}
e4263314 DSH	151
01b8b3c7	152	static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
448be743	153	{
606f6c47 DSH	154	EVP_PKEY_ASN1_METHOD tmp;
606f6c47 DSH	155	const EVP_PKEY_ASN1_METHOD t = &tmp, *ret;
448be743	156	tmp.pkey_id = type;
18e377b4 DSH	157	if (app_methods)
	158	{
	159	int idx;
5ce278a7	160	idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
86377906	161	if (idx >= 0)
5ce278a7	162	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
18e377b4	163	}
e19106f5	164	ret = OBJ_bsearch_ameth(&t, standard_methods,
babb3798	165	sizeof(standard_methods)
e19106f5	166	/sizeof(EVP_PKEY_ASN1_METHOD *));
6f81892e DSH	167	if (!ret \|\| !*ret)
6f81892e DSH	168	return NULL;
448be743 DSH	169	return *ret;
	170	}
	171
01b8b3c7 DSH	172	/* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL
	173	* also search through engines and set *pe to a functional reference
	174	* to the engine implementing 'type' or NULL if no engine implements
	175	* it.
	176	*/
	177
	178	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find(ENGINE *pe, int type)
	179	{
	180	const EVP_PKEY_ASN1_METHOD *t;
01b8b3c7 DSH	181
	182	for (;;)
	183	{
	184	t = pkey_asn1_find(type);
	185	if (!t \|\| !(t->pkey_flags & ASN1_PKEY_ALIAS))
	186	break;
	187	type = t->pkey_base_id;
	188	}
	189	if (pe)
	190	{
	191	#ifndef OPENSSL_NO_ENGINE
d3f17e5e	192	ENGINE *e;
01b8b3c7 DSH	193	/* type will contain the final unaliased type */
	194	e = ENGINE_get_pkey_asn1_meth_engine(type);
	195	if (e)
	196	{
	197	*pe = e;
	198	return ENGINE_get_pkey_asn1_meth(e, type);
	199	}
	200	#endif
	201	*pe = NULL;
	202	}
	203	return t;
	204	}
	205
	206	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find_str(ENGINE *pe,
	207	const char *str, int len)
e4263314 DSH	208	{
	209	int i;
	210	const EVP_PKEY_ASN1_METHOD *ameth;
f5cda4cb DSH	211	if (len == -1)
f5cda4cb DSH	212	len = strlen(str);
01b8b3c7 DSH	213	if (pe)
	214	{
	215	#ifndef OPENSSL_NO_ENGINE
	216	ENGINE *e;
2f0550c4 DSH	217	ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
2f0550c4 DSH	218	if (ameth)
01b8b3c7	219	{
2f0550c4 DSH	220	/* Convert structural into
	221	* functional reference
	222	*/
	223	if (!ENGINE_init(e))
	224	ameth = NULL;
	225	ENGINE_free(e);
	226	*pe = e;
	227	return ameth;
01b8b3c7 DSH	228	}
	229	#endif
	230	*pe = NULL;
	231	}
e4263314 DSH	232	for (i = 0; i < EVP_PKEY_asn1_get_count(); i++)
	233	{
	234	ameth = EVP_PKEY_asn1_get0(i);
	235	if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
	236	continue;
c20276e4	237	if (((int)strlen(ameth->pem_str) == len) &&
e4263314 DSH	238	!strncasecmp(ameth->pem_str, str, len))
	239	return ameth;
	240	}
	241	return NULL;
	242	}
	243
e46691a0	244	int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
18e377b4 DSH	245	{
	246	if (app_methods == NULL)
	247	{
5ce278a7	248	app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
18e377b4 DSH	249	if (!app_methods)
	250	return 0;
	251	}
5ce278a7	252	if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
18e377b4	253	return 0;
5ce278a7	254	sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
18e377b4 DSH	255	return 1;
	256	}
	257
e46691a0 DSH	258	int EVP_PKEY_asn1_add_alias(int to, int from)
	259	{
	260	EVP_PKEY_ASN1_METHOD *ameth;
cddaba8e	261	ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
e46691a0 DSH	262	if (!ameth)
	263	return 0;
	264	ameth->pkey_base_id = to;
e46691a0 DSH	265	return EVP_PKEY_asn1_add0(ameth);
	266	}
	267
0b33dac3 DSH	268	int EVP_PKEY_asn1_get0_info(int ppkey_id, int ppkey_base_id, int *ppkey_flags,
	269	const char pinfo, const char ppem_str,
	270	const EVP_PKEY_ASN1_METHOD *ameth)
	271	{
	272	if (!ameth)
	273	return 0;
	274	if (ppkey_id)
	275	*ppkey_id = ameth->pkey_id;
	276	if (ppkey_base_id)
	277	*ppkey_base_id = ameth->pkey_base_id;
	278	if (ppkey_flags)
	279	*ppkey_flags = ameth->pkey_flags;
	280	if (pinfo)
	281	*pinfo = ameth->info;
	282	if (ppem_str)
	283	*ppem_str = ameth->pem_str;
	284	return 1;
	285	}
	286
e77dbf32 DSH	287	const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(EVP_PKEY *pkey)
	288	{
	289	return pkey->ameth;
	290	}
	291
cddaba8e	292	EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags,
d82e2718	293	const char pem_str, const char info)
18e377b4 DSH	294	{
	295	EVP_PKEY_ASN1_METHOD *ameth;
	296	ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD));
	297	if (!ameth)
	298	return NULL;
	299
3231e42d DSH	300	memset(ameth, 0, sizeof(EVP_PKEY_ASN1_METHOD));
3231e42d DSH	301
18e377b4 DSH	302	ameth->pkey_id = id;
18e377b4 DSH	303	ameth->pkey_base_id = id;
cddaba8e	304	ameth->pkey_flags = flags \| ASN1_PKEY_DYNAMIC;
d82e2718 DSH	305
	306	if (info)
	307	{
	308	ameth->info = BUF_strdup(info);
	309	if (!ameth->info)
	310	goto err;
	311	}
5656f33c	312	else
ec7d16ff	313	ameth->info = NULL;
d82e2718 DSH	314
	315	if (pem_str)
	316	{
	317	ameth->pem_str = BUF_strdup(pem_str);
	318	if (!ameth->pem_str)
	319	goto err;
	320	}
5656f33c	321	else
ec7d16ff	322	ameth->pem_str = NULL;
e69adea5	323
18e377b4 DSH	324	ameth->pub_decode = 0;
	325	ameth->pub_encode = 0;
	326	ameth->pub_cmp = 0;
	327	ameth->pub_print = 0;
	328
18e377b4 DSH	329	ameth->priv_decode = 0;
	330	ameth->priv_encode = 0;
	331	ameth->priv_print = 0;
18e377b4	332
b37a68cc DSH	333	ameth->old_priv_encode = 0;
	334	ameth->old_priv_decode = 0;
	335
3231e42d DSH	336	ameth->item_verify = 0;
	337	ameth->item_sign = 0;
	338
18e377b4 DSH	339	ameth->pkey_size = 0;
	340	ameth->pkey_bits = 0;
	341
	342	ameth->param_decode = 0;
	343	ameth->param_encode = 0;
	344	ameth->param_missing = 0;
	345	ameth->param_copy = 0;
	346	ameth->param_cmp = 0;
	347	ameth->param_print = 0;
	348
18e377b4 DSH	349	ameth->pkey_free = 0;
	350	ameth->pkey_ctrl = 0;
	351
	352	return ameth;
d82e2718 DSH	353
	354	err:
	355
	356	EVP_PKEY_asn1_free(ameth);
	357	return NULL;
	358
	359	}
	360
e69adea5 DSH	361	void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
	362	const EVP_PKEY_ASN1_METHOD *src)
	363	{
	364
	365	dst->pub_decode = src->pub_decode;
	366	dst->pub_encode = src->pub_encode;
	367	dst->pub_cmp = src->pub_cmp;
	368	dst->pub_print = src->pub_print;
	369
	370	dst->priv_decode = src->priv_decode;
	371	dst->priv_encode = src->priv_encode;
	372	dst->priv_print = src->priv_print;
	373
	374	dst->old_priv_encode = src->old_priv_encode;
	375	dst->old_priv_decode = src->old_priv_decode;
	376
	377	dst->pkey_size = src->pkey_size;
	378	dst->pkey_bits = src->pkey_bits;
	379
	380	dst->param_decode = src->param_decode;
	381	dst->param_encode = src->param_encode;
	382	dst->param_missing = src->param_missing;
	383	dst->param_copy = src->param_copy;
	384	dst->param_cmp = src->param_cmp;
	385	dst->param_print = src->param_print;
	386
	387	dst->pkey_free = src->pkey_free;
	388	dst->pkey_ctrl = src->pkey_ctrl;
	389
3231e42d DSH	390	dst->item_sign = src->item_sign;
	391	dst->item_verify = src->item_verify;
	392
e69adea5 DSH	393	}
e69adea5 DSH	394
d82e2718 DSH	395	void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
	396	{
	397	if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC))
	398	{
	399	if (ameth->pem_str)
	400	OPENSSL_free(ameth->pem_str);
	401	if (ameth->info)
	402	OPENSSL_free(ameth->info);
	403	OPENSSL_free(ameth);
	404	}
18e377b4 DSH	405	}
	406
	407	void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
	408	int (pub_decode)(EVP_PKEY pk, X509_PUBKEY *pub),
	409	int (pub_encode)(X509_PUBKEY pub, const EVP_PKEY *pk),
	410	int (pub_cmp)(const EVP_PKEY a, const EVP_PKEY *b),
	411	int (pub_print)(BIO out, const EVP_PKEY *pkey, int indent,
	412	ASN1_PCTX *pctx),
	413	int (pkey_size)(const EVP_PKEY pk),
	414	int (pkey_bits)(const EVP_PKEY pk))
	415	{
	416	ameth->pub_decode = pub_decode;
	417	ameth->pub_encode = pub_encode;
	418	ameth->pub_cmp = pub_cmp;
	419	ameth->pub_print = pub_print;
	420	ameth->pkey_size = pkey_size;
	421	ameth->pkey_bits = pkey_bits;
	422	}
	423
	424	void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
	425	int (priv_decode)(EVP_PKEY pk, PKCS8_PRIV_KEY_INFO *p8inf),
	426	int (priv_encode)(PKCS8_PRIV_KEY_INFO p8, const EVP_PKEY *pk),
	427	int (priv_print)(BIO out, const EVP_PKEY *pkey, int indent,
	428	ASN1_PCTX *pctx))
	429	{
	430	ameth->priv_decode = priv_decode;
	431	ameth->priv_encode = priv_encode;
	432	ameth->priv_print = priv_print;
	433	}
	434
	435	void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
db98bbc1	436	int (param_decode)(EVP_PKEY pkey,
6343829a	437	const unsigned char **pder, int derlen),
db98bbc1	438	int (param_encode)(const EVP_PKEY pkey, unsigned char **pder),
18e377b4 DSH	439	int (param_missing)(const EVP_PKEY pk),
	440	int (param_copy)(EVP_PKEY to, const EVP_PKEY *from),
	441	int (param_cmp)(const EVP_PKEY a, const EVP_PKEY *b),
	442	int (param_print)(BIO out, const EVP_PKEY *pkey, int indent,
6343829a	443	ASN1_PCTX *pctx))
18e377b4 DSH	444	{
	445	ameth->param_decode = param_decode;
	446	ameth->param_encode = param_encode;
	447	ameth->param_missing = param_missing;
	448	ameth->param_copy = param_copy;
	449	ameth->param_cmp = param_cmp;
	450	ameth->param_print = param_print;
	451	}
	452
	453	void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
	454	void (pkey_free)(EVP_PKEY pkey))
	455	{
	456	ameth->pkey_free = pkey_free;
	457	}
	458
	459	void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
492a9e24	460	int (pkey_ctrl)(EVP_PKEY pkey, int op,
18e377b4 DSH	461	long arg1, void *arg2))
	462	{
	463	ameth->pkey_ctrl = pkey_ctrl;
	464	}