[thirdparty/openssl.git] / crypto / asn1 / ameth_lib.c

/*
 * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the OpenSSL license (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include "e_os.h"               /* for strncasecmp */
#include "internal/cryptlib.h"
#include <stdio.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/engine.h>
#include "internal/asn1_int.h"
#include "internal/evp_int.h"

#include "standard_methods.h"

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

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 = OSSL_NELEM(standard_methods);
    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 = OSSL_NELEM(standard_methods);
    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, OSSL_NELEM(standard_methods));
    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 = NULL;

    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 = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
        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) == 0)
            return ameth;
    }
    return NULL;
}

int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
{
    EVP_PKEY_ASN1_METHOD tmp = { 0, };

    if (app_methods == NULL) {
        app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
        if (app_methods == NULL)
            return 0;
    }

    tmp.pkey_id = ameth->pkey_id;
    if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
        EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0,
               EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
        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 == NULL)
        return 0;
    ameth->pkey_base_id = to;
    if (!EVP_PKEY_asn1_add0(ameth)) {
        EVP_PKEY_asn1_free(ameth);
        return 0;
    }
    return 1;
}

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(const 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 = OPENSSL_zalloc(sizeof(*ameth));

    if (ameth == NULL)
        return NULL;

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

    if (info) {
        ameth->info = OPENSSL_strdup(info);
        if (!ameth->info)
            goto err;
    }

    /*
     * One of the following must be true:
     *
     * pem_str == NULL AND ASN1_PKEY_ALIAS is set
     * pem_str != NULL AND ASN1_PKEY_ALIAS is clear
     *
     * Anything else is an error and may lead to a corrupt ASN1 method table
     */
    if (!((pem_str == NULL && (flags & ASN1_PKEY_ALIAS) != 0)
          || (pem_str != NULL && (flags & ASN1_PKEY_ALIAS) == 0)))
        goto err;

    if (pem_str) {
        ameth->pem_str = OPENSSL_strdup(pem_str);
        if (!ameth->pem_str)
            goto err;
    }

    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;

    dst->siginf_set = src->siginf_set;

    dst->pkey_check = src->pkey_check;

}

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

void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
                                     int (*pkey_security_bits) (const EVP_PKEY
                                                                *pk))
{
    ameth->pkey_security_bits = pkey_security_bits;
}

void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
                            int (*item_verify) (EVP_MD_CTX *ctx,
                                                const ASN1_ITEM *it,
                                                void *asn,
                                                X509_ALGOR *a,
                                                ASN1_BIT_STRING *sig,
                                                EVP_PKEY *pkey),
                            int (*item_sign) (EVP_MD_CTX *ctx,
                                              const ASN1_ITEM *it,
                                              void *asn,
                                              X509_ALGOR *alg1,
                                              X509_ALGOR *alg2,
                                              ASN1_BIT_STRING *sig))
{
    ameth->item_sign = item_sign;
    ameth->item_verify = item_verify;
}

void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
                              int (*siginf_set) (X509_SIG_INFO *siginf,
                                                 const X509_ALGOR *alg,
                                                 const ASN1_STRING *sig))
{
    ameth->siginf_set = siginf_set;
}

void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
                             int (*pkey_check) (const EVP_PKEY *pk))
{
    ameth->pkey_check = pkey_check;
}

void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
                                    int (*pkey_pub_check) (const EVP_PKEY *pk))
{
    ameth->pkey_public_check = pkey_pub_check;
}

void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
                                   int (*pkey_param_check) (const EVP_PKEY *pk))
{
    ameth->pkey_param_check = pkey_param_check;
}

void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
                                    int (*set_priv_key) (EVP_PKEY *pk,
                                                         const unsigned char
                                                            *priv,
                                                         size_t len))
{
    ameth->set_priv_key = set_priv_key;
}

void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
                                   int (*set_pub_key) (EVP_PKEY *pk,
                                                       const unsigned char *pub,
                                                       size_t len))
{
    ameth->set_pub_key = set_pub_key;
}

void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
                                    int (*get_priv_key) (const EVP_PKEY *pk,
                                                         unsigned char *priv,
                                                         size_t *len))
{
    ameth->get_priv_key = get_priv_key;
}

void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
                                   int (*get_pub_key) (const EVP_PKEY *pk,
                                                       unsigned char *pub,
                                                       size_t *len))
{
    ameth->get_pub_key = get_pub_key;
}
Commit	Line	Data
0f113f3e	1	/*
6738bf14	2	* Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
448be743	3	*
b1322259 RS	4	* Licensed under the OpenSSL license (the "License"). You may not use
	5	* this file except in compliance with the License. You can obtain a copy
	6	* in the file LICENSE in the source distribution or at
	7	* https://www.openssl.org/source/license.html
448be743 DSH	8	*/
448be743 DSH	9
677963e5	10	#include "e_os.h" /* for strncasecmp */
b39fc560	11	#include "internal/cryptlib.h"
677963e5	12	#include <stdio.h>
448be743 DSH	13	#include <openssl/asn1t.h>
448be743 DSH	14	#include <openssl/x509.h>
3c27208f	15	#include <openssl/engine.h>
5fe736e5	16	#include "internal/asn1_int.h"
3aeb9348	17	#include "internal/evp_int.h"
448be743	18
2c166171	19	#include "standard_methods.h"
448be743	20
0f113f3e	21	typedef int sk_cmp_fn_type(const char const a, const char const b);
5ce278a7	22	static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
18e377b4	23
606f6c47	24	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
0f113f3e	25	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	26
0f113f3e MC	27	static int ameth_cmp(const EVP_PKEY_ASN1_METHOD const a,
	28	const EVP_PKEY_ASN1_METHOD const b)
	29	{
	30	return ((a)->pkey_id - (b)->pkey_id);
	31	}
448be743	32
606f6c47	33	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
0f113f3e	34	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	35
e4263314	36	int EVP_PKEY_asn1_get_count(void)
0f113f3e	37	{
b6eb9827	38	int num = OSSL_NELEM(standard_methods);
0f113f3e MC	39	if (app_methods)
	40	num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
	41	return num;
	42	}
e4263314 DSH	43
e4263314 DSH	44	const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
0f113f3e	45	{
b6eb9827	46	int num = OSSL_NELEM(standard_methods);
0f113f3e MC	47	if (idx < 0)
	48	return NULL;
	49	if (idx < num)
	50	return standard_methods[idx];
	51	idx -= num;
	52	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	53	}
e4263314	54
01b8b3c7	55	static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
0f113f3e MC	56	{
	57	EVP_PKEY_ASN1_METHOD tmp;
	58	const EVP_PKEY_ASN1_METHOD t = &tmp, *ret;
	59	tmp.pkey_id = type;
	60	if (app_methods) {
	61	int idx;
	62	idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
	63	if (idx >= 0)
	64	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	65	}
b6eb9827	66	ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
0f113f3e MC	67	if (!ret \|\| !*ret)
	68	return NULL;
	69	return *ret;
	70	}
	71
	72	/*
	73	* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
	74	* search through engines and set *pe to a functional reference to the engine
	75	* implementing 'type' or NULL if no engine implements it.
01b8b3c7 DSH	76	*/
	77
	78	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find(ENGINE *pe, int type)
0f113f3e MC	79	{
	80	const EVP_PKEY_ASN1_METHOD *t;
	81
	82	for (;;) {
	83	t = pkey_asn1_find(type);
	84	if (!t \|\| !(t->pkey_flags & ASN1_PKEY_ALIAS))
	85	break;
	86	type = t->pkey_base_id;
	87	}
	88	if (pe) {
01b8b3c7	89	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	90	ENGINE *e;
	91	/* type will contain the final unaliased type */
	92	e = ENGINE_get_pkey_asn1_meth_engine(type);
	93	if (e) {
	94	*pe = e;
	95	return ENGINE_get_pkey_asn1_meth(e, type);
	96	}
01b8b3c7	97	#endif
0f113f3e MC	98	*pe = NULL;
	99	}
	100	return t;
	101	}
01b8b3c7 DSH	102
01b8b3c7 DSH	103	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find_str(ENGINE *pe,
0f113f3e MC	104	const char *str, int len)
	105	{
	106	int i;
3bf0c3fe RL	107	const EVP_PKEY_ASN1_METHOD *ameth = NULL;
3bf0c3fe RL	108
0f113f3e MC	109	if (len == -1)
	110	len = strlen(str);
	111	if (pe) {
01b8b3c7	112	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	113	ENGINE *e;
	114	ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
	115	if (ameth) {
	116	/*
	117	* Convert structural into functional reference
	118	*/
	119	if (!ENGINE_init(e))
	120	ameth = NULL;
	121	ENGINE_free(e);
	122	*pe = e;
	123	return ameth;
	124	}
01b8b3c7	125	#endif
0f113f3e MC	126	*pe = NULL;
0f113f3e MC	127	}
3bf0c3fe	128	for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
0f113f3e MC	129	ameth = EVP_PKEY_asn1_get0(i);
	130	if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
	131	continue;
3bf0c3fe RL	132	if ((int)strlen(ameth->pem_str) == len
3bf0c3fe RL	133	&& strncasecmp(ameth->pem_str, str, len) == 0)
0f113f3e MC	134	return ameth;
	135	}
	136	return NULL;
	137	}
e4263314	138
e46691a0	139	int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e	140	{
3bf0c3fe RL	141	EVP_PKEY_ASN1_METHOD tmp = { 0, };
3bf0c3fe RL	142
0f113f3e MC	143	if (app_methods == NULL) {
0f113f3e MC	144	app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
90945fa3	145	if (app_methods == NULL)
0f113f3e MC	146	return 0;
0f113f3e MC	147	}
3bf0c3fe RL	148
	149	tmp.pkey_id = ameth->pkey_id;
	150	if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
	151	EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0,
	152	EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
	153	return 0;
	154	}
	155
0f113f3e MC	156	if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
	157	return 0;
	158	sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
	159	return 1;
	160	}
18e377b4	161
e46691a0	162	int EVP_PKEY_asn1_add_alias(int to, int from)
0f113f3e MC	163	{
	164	EVP_PKEY_ASN1_METHOD *ameth;
	165	ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
90945fa3	166	if (ameth == NULL)
0f113f3e MC	167	return 0;
	168	ameth->pkey_base_id = to;
	169	if (!EVP_PKEY_asn1_add0(ameth)) {
	170	EVP_PKEY_asn1_free(ameth);
	171	return 0;
	172	}
	173	return 1;
	174	}
	175
	176	int EVP_PKEY_asn1_get0_info(int ppkey_id, int ppkey_base_id,
	177	int ppkey_flags, const char *pinfo,
	178	const char **ppem_str,
	179	const EVP_PKEY_ASN1_METHOD *ameth)
	180	{
	181	if (!ameth)
	182	return 0;
	183	if (ppkey_id)
	184	*ppkey_id = ameth->pkey_id;
	185	if (ppkey_base_id)
	186	*ppkey_base_id = ameth->pkey_base_id;
	187	if (ppkey_flags)
	188	*ppkey_flags = ameth->pkey_flags;
	189	if (pinfo)
	190	*pinfo = ameth->info;
	191	if (ppem_str)
	192	*ppem_str = ameth->pem_str;
	193	return 1;
	194	}
	195
8900f3e3	196	const EVP_PKEY_ASN1_METHOD EVP_PKEY_get0_asn1(const EVP_PKEY pkey)
0f113f3e MC	197	{
	198	return pkey->ameth;
	199	}
	200
	201	EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
	202	const char pem_str, const char info)
	203	{
b51bce94 RS	204	EVP_PKEY_ASN1_METHOD ameth = OPENSSL_zalloc(sizeof(ameth));
b51bce94 RS	205
90945fa3	206	if (ameth == NULL)
0f113f3e MC	207	return NULL;
0f113f3e MC	208
0f113f3e MC	209	ameth->pkey_id = id;
	210	ameth->pkey_base_id = id;
	211	ameth->pkey_flags = flags \| ASN1_PKEY_DYNAMIC;
	212
	213	if (info) {
7644a9ae	214	ameth->info = OPENSSL_strdup(info);
0f113f3e MC	215	if (!ameth->info)
0f113f3e MC	216	goto err;
64b25758	217	}
0f113f3e	218
38eca7fe RL	219	/*
	220	* One of the following must be true:
	221	*
	222	* pem_str == NULL AND ASN1_PKEY_ALIAS is set
	223	* pem_str != NULL AND ASN1_PKEY_ALIAS is clear
	224	*
	225	* Anything else is an error and may lead to a corrupt ASN1 method table
	226	*/
	227	if (!((pem_str == NULL && (flags & ASN1_PKEY_ALIAS) != 0)
	228	\|\| (pem_str != NULL && (flags & ASN1_PKEY_ALIAS) == 0)))
	229	goto err;
	230
0f113f3e	231	if (pem_str) {
7644a9ae	232	ameth->pem_str = OPENSSL_strdup(pem_str);
0f113f3e MC	233	if (!ameth->pem_str)
0f113f3e MC	234	goto err;
64b25758	235	}
0f113f3e MC	236
	237	return ameth;
	238
	239	err:
0f113f3e MC	240	EVP_PKEY_asn1_free(ameth);
	241	return NULL;
	242
	243	}
	244
	245	void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
	246	const EVP_PKEY_ASN1_METHOD *src)
	247	{
	248
	249	dst->pub_decode = src->pub_decode;
	250	dst->pub_encode = src->pub_encode;
	251	dst->pub_cmp = src->pub_cmp;
	252	dst->pub_print = src->pub_print;
	253
	254	dst->priv_decode = src->priv_decode;
	255	dst->priv_encode = src->priv_encode;
	256	dst->priv_print = src->priv_print;
	257
	258	dst->old_priv_encode = src->old_priv_encode;
	259	dst->old_priv_decode = src->old_priv_decode;
	260
	261	dst->pkey_size = src->pkey_size;
	262	dst->pkey_bits = src->pkey_bits;
	263
	264	dst->param_decode = src->param_decode;
	265	dst->param_encode = src->param_encode;
	266	dst->param_missing = src->param_missing;
	267	dst->param_copy = src->param_copy;
	268	dst->param_cmp = src->param_cmp;
	269	dst->param_print = src->param_print;
e69adea5	270
0f113f3e MC	271	dst->pkey_free = src->pkey_free;
0f113f3e MC	272	dst->pkey_ctrl = src->pkey_ctrl;
e69adea5	273
0f113f3e MC	274	dst->item_sign = src->item_sign;
0f113f3e MC	275	dst->item_verify = src->item_verify;
3231e42d	276
5e006082 RL	277	dst->siginf_set = src->siginf_set;
	278
	279	dst->pkey_check = src->pkey_check;
	280
0f113f3e	281	}
e69adea5	282
d82e2718	283	void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e MC	284	{
0f113f3e MC	285	if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
b548a1f1 RS	286	OPENSSL_free(ameth->pem_str);
b548a1f1 RS	287	OPENSSL_free(ameth->info);
0f113f3e MC	288	OPENSSL_free(ameth);
	289	}
	290	}
18e377b4 DSH	291
18e377b4 DSH	292	void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	293	int (pub_decode) (EVP_PKEY pk,
	294	X509_PUBKEY *pub),
	295	int (pub_encode) (X509_PUBKEY pub,
	296	const EVP_PKEY *pk),
	297	int (pub_cmp) (const EVP_PKEY a,
	298	const EVP_PKEY *b),
	299	int (pub_print) (BIO out,
	300	const EVP_PKEY *pkey,
	301	int indent, ASN1_PCTX *pctx),
	302	int (pkey_size) (const EVP_PKEY pk),
	303	int (pkey_bits) (const EVP_PKEY pk))
	304	{
	305	ameth->pub_decode = pub_decode;
	306	ameth->pub_encode = pub_encode;
	307	ameth->pub_cmp = pub_cmp;
	308	ameth->pub_print = pub_print;
	309	ameth->pkey_size = pkey_size;
	310	ameth->pkey_bits = pkey_bits;
	311	}
18e377b4 DSH	312
18e377b4 DSH	313	void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e	314	int (priv_decode) (EVP_PKEY pk,
245c6bc3	315	const PKCS8_PRIV_KEY_INFO
0f113f3e MC	316	*p8inf),
	317	int (priv_encode) (PKCS8_PRIV_KEY_INFO p8,
	318	const EVP_PKEY *pk),
	319	int (priv_print) (BIO out,
	320	const EVP_PKEY *pkey,
	321	int indent,
	322	ASN1_PCTX *pctx))
	323	{
	324	ameth->priv_decode = priv_decode;
	325	ameth->priv_encode = priv_encode;
	326	ameth->priv_print = priv_print;
	327	}
18e377b4 DSH	328
18e377b4 DSH	329	void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	330	int (param_decode) (EVP_PKEY pkey,
	331	const unsigned char **pder,
	332	int derlen),
	333	int (param_encode) (const EVP_PKEY pkey,
	334	unsigned char **pder),
	335	int (param_missing) (const EVP_PKEY pk),
	336	int (param_copy) (EVP_PKEY to,
	337	const EVP_PKEY *from),
	338	int (param_cmp) (const EVP_PKEY a,
	339	const EVP_PKEY *b),
	340	int (param_print) (BIO out,
	341	const EVP_PKEY *pkey,
	342	int indent, ASN1_PCTX *pctx))
	343	{
	344	ameth->param_decode = param_decode;
	345	ameth->param_encode = param_encode;
	346	ameth->param_missing = param_missing;
	347	ameth->param_copy = param_copy;
	348	ameth->param_cmp = param_cmp;
	349	ameth->param_print = param_print;
	350	}
18e377b4 DSH	351
18e377b4 DSH	352	void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	353	void (pkey_free) (EVP_PKEY pkey))
	354	{
	355	ameth->pkey_free = pkey_free;
	356	}
18e377b4 DSH	357
18e377b4 DSH	358	void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	359	int (pkey_ctrl) (EVP_PKEY pkey, int op,
	360	long arg1, void *arg2))
	361	{
	362	ameth->pkey_ctrl = pkey_ctrl;
	363	}
2514fa79 DSH	364
2514fa79 DSH	365	void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	366	int (*pkey_security_bits) (const EVP_PKEY
	367	*pk))
	368	{
	369	ameth->pkey_security_bits = pkey_security_bits;
	370	}
3418f7b7 SA	371
	372	void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
	373	int (item_verify) (EVP_MD_CTX ctx,
	374	const ASN1_ITEM *it,
	375	void *asn,
	376	X509_ALGOR *a,
	377	ASN1_BIT_STRING *sig,
	378	EVP_PKEY *pkey),
	379	int (item_sign) (EVP_MD_CTX ctx,
	380	const ASN1_ITEM *it,
	381	void *asn,
	382	X509_ALGOR *alg1,
	383	X509_ALGOR *alg2,
	384	ASN1_BIT_STRING *sig))
	385	{
	386	ameth->item_sign = item_sign;
	387	ameth->item_verify = item_verify;
	388	}
5e006082 RL	389
	390	void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
	391	int (siginf_set) (X509_SIG_INFO siginf,
	392	const X509_ALGOR *alg,
	393	const ASN1_STRING *sig))
	394	{
	395	ameth->siginf_set = siginf_set;
	396	}
	397
	398	void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
	399	int (pkey_check) (const EVP_PKEY pk))
	400	{
	401	ameth->pkey_check = pkey_check;
	402	}
b0004708 PY	403
	404	void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
	405	int (pkey_pub_check) (const EVP_PKEY pk))
	406	{
	407	ameth->pkey_public_check = pkey_pub_check;
	408	}
	409
	410	void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
	411	int (pkey_param_check) (const EVP_PKEY pk))
	412	{
	413	ameth->pkey_param_check = pkey_param_check;
	414	}
e8f9f08f MC	415
	416	void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	417	int (set_priv_key) (EVP_PKEY pk,
	418	const unsigned char
	419	*priv,
	420	size_t len))
	421	{
	422	ameth->set_priv_key = set_priv_key;
	423	}
	424
	425	void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	426	int (set_pub_key) (EVP_PKEY pk,
	427	const unsigned char *pub,
	428	size_t len))
	429	{
	430	ameth->set_pub_key = set_pub_key;
	431	}
72ff0a54 MC	432
	433	void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	434	int (get_priv_key) (const EVP_PKEY pk,
	435	unsigned char *priv,
	436	size_t *len))
	437	{
	438	ameth->get_priv_key = get_priv_key;
	439	}
	440
	441	void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	442	int (get_pub_key) (const EVP_PKEY pk,
	443	unsigned char *pub,
	444	size_t *len))
	445	{
	446	ameth->get_pub_key = get_pub_key;
	447	}