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

/*
 * Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
 *
 * Licensed under the Apache License 2.0 (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
 */

/* We need to use some engine deprecated APIs */
#define OPENSSL_SUPPRESS_DEPRECATED

#include "internal/cryptlib.h"
#include <stdio.h>
#include <openssl/asn1t.h>
#include <openssl/x509.h>
#include <openssl/engine.h>
#include "crypto/asn1.h"
#include "crypto/evp.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 == NULL || *ret == NULL)
        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
            && OPENSSL_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, };

    /*
     * 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 (!((ameth->pem_str == NULL
           && (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
          || (ameth->pem_str != NULL
              && (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
        ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT);
        return 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) {
        ERR_raise(ERR_LIB_EVP,
                  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 == NULL)
            goto err;
    }

    if (pem_str) {
        ameth->pem_str = OPENSSL_strdup(pem_str);
        if (ameth->pem_str == NULL)
            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)
{
    int pkey_id = dst->pkey_id;
    int pkey_base_id = dst->pkey_base_id;
    unsigned long pkey_flags = dst->pkey_flags;
    char *pem_str = dst->pem_str;
    char *info = dst->info;

    *dst = *src;

    /* We only copy the function pointers so restore the other values */
    dst->pkey_id = pkey_id;
    dst->pkey_base_id = pkey_base_id;
    dst->pkey_flags = pkey_flags;
    dst->pem_str = pem_str;
    dst->info = info;
}

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,
                                                 const 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,
                                                const void *data,
                                                const X509_ALGOR *a,
                                                const ASN1_BIT_STRING *sig,
                                                EVP_PKEY *pkey),
                            int (*item_sign) (EVP_MD_CTX *ctx,
                                              const ASN1_ITEM *it,
                                              const void *data,
                                              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	/*
fecb3aae	2	* Copyright 2006-2022 The OpenSSL Project Authors. All Rights Reserved.
448be743	3	*
365a2d99	4	* Licensed under the Apache License 2.0 (the "License"). You may not use
b1322259 RS	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
e4468e6d P	10	/* We need to use some engine deprecated APIs */
	11	#define OPENSSL_SUPPRESS_DEPRECATED
	12
b39fc560	13	#include "internal/cryptlib.h"
677963e5	14	#include <stdio.h>
448be743 DSH	15	#include <openssl/asn1t.h>
448be743 DSH	16	#include <openssl/x509.h>
3c27208f	17	#include <openssl/engine.h>
25f2138b DMSP	18	#include "crypto/asn1.h"
25f2138b DMSP	19	#include "crypto/evp.h"
448be743	20
2c166171	21	#include "standard_methods.h"
448be743	22
0f113f3e	23	typedef int sk_cmp_fn_type(const char const a, const char const b);
5ce278a7	24	static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL;
18e377b4	25
606f6c47	26	DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
0f113f3e	27	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	28
0f113f3e MC	29	static int ameth_cmp(const EVP_PKEY_ASN1_METHOD const a,
	30	const EVP_PKEY_ASN1_METHOD const b)
	31	{
	32	return ((a)->pkey_id - (b)->pkey_id);
	33	}
448be743	34
606f6c47	35	IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *,
0f113f3e	36	const EVP_PKEY_ASN1_METHOD *, ameth);
babb3798	37
e4263314	38	int EVP_PKEY_asn1_get_count(void)
0f113f3e	39	{
b6eb9827	40	int num = OSSL_NELEM(standard_methods);
0f113f3e MC	41	if (app_methods)
	42	num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods);
	43	return num;
	44	}
e4263314 DSH	45
e4263314 DSH	46	const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx)
0f113f3e	47	{
b6eb9827	48	int num = OSSL_NELEM(standard_methods);
0f113f3e MC	49	if (idx < 0)
	50	return NULL;
	51	if (idx < num)
	52	return standard_methods[idx];
	53	idx -= num;
	54	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	55	}
e4263314	56
01b8b3c7	57	static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type)
0f113f3e MC	58	{
	59	EVP_PKEY_ASN1_METHOD tmp;
	60	const EVP_PKEY_ASN1_METHOD t = &tmp, *ret;
12a765a5	61
0f113f3e MC	62	tmp.pkey_id = type;
	63	if (app_methods) {
	64	int idx;
	65	idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
	66	if (idx >= 0)
	67	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	68	}
b6eb9827	69	ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
12a765a5	70	if (ret == NULL \|\| *ret == NULL)
0f113f3e MC	71	return NULL;
	72	return *ret;
	73	}
	74
	75	/*
	76	* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
	77	* search through engines and set *pe to a functional reference to the engine
	78	* implementing 'type' or NULL if no engine implements it.
01b8b3c7 DSH	79	*/
	80
	81	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find(ENGINE *pe, int type)
0f113f3e MC	82	{
	83	const EVP_PKEY_ASN1_METHOD *t;
	84
	85	for (;;) {
	86	t = pkey_asn1_find(type);
	87	if (!t \|\| !(t->pkey_flags & ASN1_PKEY_ALIAS))
	88	break;
	89	type = t->pkey_base_id;
	90	}
	91	if (pe) {
01b8b3c7	92	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	93	ENGINE *e;
	94	/* type will contain the final unaliased type */
	95	e = ENGINE_get_pkey_asn1_meth_engine(type);
	96	if (e) {
	97	*pe = e;
	98	return ENGINE_get_pkey_asn1_meth(e, type);
	99	}
01b8b3c7	100	#endif
0f113f3e MC	101	*pe = NULL;
	102	}
	103	return t;
	104	}
01b8b3c7 DSH	105
01b8b3c7 DSH	106	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find_str(ENGINE *pe,
0f113f3e MC	107	const char *str, int len)
	108	{
	109	int i;
3bf0c3fe RL	110	const EVP_PKEY_ASN1_METHOD *ameth = NULL;
3bf0c3fe RL	111
0f113f3e MC	112	if (len == -1)
	113	len = strlen(str);
	114	if (pe) {
01b8b3c7	115	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	116	ENGINE *e;
	117	ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
	118	if (ameth) {
	119	/*
	120	* Convert structural into functional reference
	121	*/
	122	if (!ENGINE_init(e))
	123	ameth = NULL;
	124	ENGINE_free(e);
	125	*pe = e;
	126	return ameth;
	127	}
01b8b3c7	128	#endif
0f113f3e MC	129	*pe = NULL;
0f113f3e MC	130	}
3bf0c3fe	131	for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
0f113f3e MC	132	ameth = EVP_PKEY_asn1_get0(i);
	133	if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
	134	continue;
3bf0c3fe	135	if ((int)strlen(ameth->pem_str) == len
fba140c7	136	&& OPENSSL_strncasecmp(ameth->pem_str, str, len) == 0)
0f113f3e MC	137	return ameth;
	138	}
	139	return NULL;
	140	}
e4263314	141
e46691a0	142	int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e	143	{
3bf0c3fe RL	144	EVP_PKEY_ASN1_METHOD tmp = { 0, };
3bf0c3fe RL	145
a8600316 RL	146	/*
	147	* One of the following must be true:
	148	*
	149	* pem_str == NULL AND ASN1_PKEY_ALIAS is set
	150	* pem_str != NULL AND ASN1_PKEY_ALIAS is clear
	151	*
	152	* Anything else is an error and may lead to a corrupt ASN1 method table
	153	*/
	154	if (!((ameth->pem_str == NULL
	155	&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
	156	\|\| (ameth->pem_str != NULL
	157	&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
9311d0c4	158	ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_INVALID_ARGUMENT);
a8600316 RL	159	return 0;
	160	}
	161
0f113f3e MC	162	if (app_methods == NULL) {
0f113f3e MC	163	app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
90945fa3	164	if (app_methods == NULL)
0f113f3e MC	165	return 0;
0f113f3e MC	166	}
3bf0c3fe RL	167
	168	tmp.pkey_id = ameth->pkey_id;
	169	if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
9311d0c4 RL	170	ERR_raise(ERR_LIB_EVP,
9311d0c4 RL	171	EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
3bf0c3fe RL	172	return 0;
	173	}
	174
0f113f3e MC	175	if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
	176	return 0;
	177	sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
	178	return 1;
	179	}
18e377b4	180
e46691a0	181	int EVP_PKEY_asn1_add_alias(int to, int from)
0f113f3e MC	182	{
	183	EVP_PKEY_ASN1_METHOD *ameth;
	184	ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
90945fa3	185	if (ameth == NULL)
0f113f3e MC	186	return 0;
	187	ameth->pkey_base_id = to;
	188	if (!EVP_PKEY_asn1_add0(ameth)) {
	189	EVP_PKEY_asn1_free(ameth);
	190	return 0;
	191	}
	192	return 1;
	193	}
	194
	195	int EVP_PKEY_asn1_get0_info(int ppkey_id, int ppkey_base_id,
	196	int ppkey_flags, const char *pinfo,
	197	const char **ppem_str,
	198	const EVP_PKEY_ASN1_METHOD *ameth)
	199	{
	200	if (!ameth)
	201	return 0;
	202	if (ppkey_id)
	203	*ppkey_id = ameth->pkey_id;
	204	if (ppkey_base_id)
	205	*ppkey_base_id = ameth->pkey_base_id;
	206	if (ppkey_flags)
	207	*ppkey_flags = ameth->pkey_flags;
	208	if (pinfo)
	209	*pinfo = ameth->info;
	210	if (ppem_str)
	211	*ppem_str = ameth->pem_str;
	212	return 1;
	213	}
	214
8900f3e3	215	const EVP_PKEY_ASN1_METHOD EVP_PKEY_get0_asn1(const EVP_PKEY pkey)
0f113f3e MC	216	{
	217	return pkey->ameth;
	218	}
	219
	220	EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
	221	const char pem_str, const char info)
	222	{
b51bce94 RS	223	EVP_PKEY_ASN1_METHOD ameth = OPENSSL_zalloc(sizeof(ameth));
b51bce94 RS	224
e077455e	225	if (ameth == NULL)
0f113f3e MC	226	return NULL;
0f113f3e MC	227
0f113f3e MC	228	ameth->pkey_id = id;
	229	ameth->pkey_base_id = id;
	230	ameth->pkey_flags = flags \| ASN1_PKEY_DYNAMIC;
	231
	232	if (info) {
7644a9ae	233	ameth->info = OPENSSL_strdup(info);
89947af2	234	if (ameth->info == NULL)
0f113f3e	235	goto err;
64b25758	236	}
0f113f3e MC	237
0f113f3e MC	238	if (pem_str) {
7644a9ae	239	ameth->pem_str = OPENSSL_strdup(pem_str);
89947af2	240	if (ameth->pem_str == NULL)
0f113f3e	241	goto err;
64b25758	242	}
0f113f3e MC	243
	244	return ameth;
	245
	246	err:
0f113f3e MC	247	EVP_PKEY_asn1_free(ameth);
0f113f3e MC	248	return NULL;
0f113f3e MC	249	}
	250
	251	void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
	252	const EVP_PKEY_ASN1_METHOD *src)
	253	{
472a88b7 MC	254	int pkey_id = dst->pkey_id;
	255	int pkey_base_id = dst->pkey_base_id;
	256	unsigned long pkey_flags = dst->pkey_flags;
	257	char *pem_str = dst->pem_str;
	258	char *info = dst->info;
	259
	260	dst = src;
	261
	262	/* We only copy the function pointers so restore the other values */
	263	dst->pkey_id = pkey_id;
	264	dst->pkey_base_id = pkey_base_id;
	265	dst->pkey_flags = pkey_flags;
	266	dst->pem_str = pem_str;
	267	dst->info = info;
0f113f3e	268	}
e69adea5	269
d82e2718	270	void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e MC	271	{
0f113f3e MC	272	if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
b548a1f1 RS	273	OPENSSL_free(ameth->pem_str);
b548a1f1 RS	274	OPENSSL_free(ameth->info);
0f113f3e MC	275	OPENSSL_free(ameth);
	276	}
	277	}
18e377b4 DSH	278
18e377b4 DSH	279	void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e	280	int (pub_decode) (EVP_PKEY pk,
7674e923	281	const X509_PUBKEY *pub),
0f113f3e MC	282	int (pub_encode) (X509_PUBKEY pub,
	283	const EVP_PKEY *pk),
	284	int (pub_cmp) (const EVP_PKEY a,
	285	const EVP_PKEY *b),
	286	int (pub_print) (BIO out,
	287	const EVP_PKEY *pkey,
	288	int indent, ASN1_PCTX *pctx),
	289	int (pkey_size) (const EVP_PKEY pk),
	290	int (pkey_bits) (const EVP_PKEY pk))
	291	{
	292	ameth->pub_decode = pub_decode;
	293	ameth->pub_encode = pub_encode;
	294	ameth->pub_cmp = pub_cmp;
	295	ameth->pub_print = pub_print;
	296	ameth->pkey_size = pkey_size;
	297	ameth->pkey_bits = pkey_bits;
	298	}
18e377b4 DSH	299
18e377b4 DSH	300	void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e	301	int (priv_decode) (EVP_PKEY pk,
245c6bc3	302	const PKCS8_PRIV_KEY_INFO
0f113f3e MC	303	*p8inf),
	304	int (priv_encode) (PKCS8_PRIV_KEY_INFO p8,
	305	const EVP_PKEY *pk),
	306	int (priv_print) (BIO out,
	307	const EVP_PKEY *pkey,
	308	int indent,
	309	ASN1_PCTX *pctx))
	310	{
	311	ameth->priv_decode = priv_decode;
	312	ameth->priv_encode = priv_encode;
	313	ameth->priv_print = priv_print;
	314	}
18e377b4 DSH	315
18e377b4 DSH	316	void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	317	int (param_decode) (EVP_PKEY pkey,
	318	const unsigned char **pder,
	319	int derlen),
	320	int (param_encode) (const EVP_PKEY pkey,
	321	unsigned char **pder),
	322	int (param_missing) (const EVP_PKEY pk),
	323	int (param_copy) (EVP_PKEY to,
	324	const EVP_PKEY *from),
	325	int (param_cmp) (const EVP_PKEY a,
	326	const EVP_PKEY *b),
	327	int (param_print) (BIO out,
	328	const EVP_PKEY *pkey,
	329	int indent, ASN1_PCTX *pctx))
	330	{
	331	ameth->param_decode = param_decode;
	332	ameth->param_encode = param_encode;
	333	ameth->param_missing = param_missing;
	334	ameth->param_copy = param_copy;
	335	ameth->param_cmp = param_cmp;
	336	ameth->param_print = param_print;
	337	}
18e377b4 DSH	338
18e377b4 DSH	339	void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	340	void (pkey_free) (EVP_PKEY pkey))
	341	{
	342	ameth->pkey_free = pkey_free;
	343	}
18e377b4 DSH	344
18e377b4 DSH	345	void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	346	int (pkey_ctrl) (EVP_PKEY pkey, int op,
	347	long arg1, void *arg2))
	348	{
	349	ameth->pkey_ctrl = pkey_ctrl;
	350	}
2514fa79 DSH	351
2514fa79 DSH	352	void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	353	int (*pkey_security_bits) (const EVP_PKEY
	354	*pk))
	355	{
	356	ameth->pkey_security_bits = pkey_security_bits;
	357	}
3418f7b7 SA	358
	359	void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
	360	int (item_verify) (EVP_MD_CTX ctx,
	361	const ASN1_ITEM *it,
ded346fa DDO	362	const void *data,
	363	const X509_ALGOR *a,
	364	const ASN1_BIT_STRING *sig,
3418f7b7 SA	365	EVP_PKEY *pkey),
	366	int (item_sign) (EVP_MD_CTX ctx,
	367	const ASN1_ITEM *it,
ded346fa	368	const void *data,
3418f7b7 SA	369	X509_ALGOR *alg1,
	370	X509_ALGOR *alg2,
	371	ASN1_BIT_STRING *sig))
	372	{
	373	ameth->item_sign = item_sign;
	374	ameth->item_verify = item_verify;
	375	}
5e006082 RL	376
	377	void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
	378	int (siginf_set) (X509_SIG_INFO siginf,
	379	const X509_ALGOR *alg,
	380	const ASN1_STRING *sig))
	381	{
	382	ameth->siginf_set = siginf_set;
	383	}
	384
	385	void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
	386	int (pkey_check) (const EVP_PKEY pk))
	387	{
	388	ameth->pkey_check = pkey_check;
	389	}
b0004708 PY	390
	391	void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
	392	int (pkey_pub_check) (const EVP_PKEY pk))
	393	{
	394	ameth->pkey_public_check = pkey_pub_check;
	395	}
	396
	397	void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
	398	int (pkey_param_check) (const EVP_PKEY pk))
	399	{
	400	ameth->pkey_param_check = pkey_param_check;
	401	}
e8f9f08f MC	402
	403	void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	404	int (set_priv_key) (EVP_PKEY pk,
	405	const unsigned char
	406	*priv,
	407	size_t len))
	408	{
	409	ameth->set_priv_key = set_priv_key;
	410	}
	411
	412	void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	413	int (set_pub_key) (EVP_PKEY pk,
	414	const unsigned char *pub,
	415	size_t len))
	416	{
	417	ameth->set_pub_key = set_pub_key;
	418	}
72ff0a54 MC	419
	420	void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	421	int (get_priv_key) (const EVP_PKEY pk,
	422	unsigned char *priv,
	423	size_t *len))
	424	{
	425	ameth->get_priv_key = get_priv_key;
	426	}
	427
	428	void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	429	int (get_pub_key) (const EVP_PKEY pk,
	430	unsigned char *pub,
	431	size_t *len))
	432	{
	433	ameth->get_pub_key = get_pub_key;
	434	}