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

/*
 * Copyright 2006-2020 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
 */

#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 "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
            && 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))) {
        EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, 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) {
        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;
    }

    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)
{
    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,
                                                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	/*
33388b44	2	* Copyright 2006-2020 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
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>
25f2138b DMSP	16	#include "crypto/asn1.h"
25f2138b DMSP	17	#include "crypto/evp.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;
12a765a5	59
0f113f3e MC	60	tmp.pkey_id = type;
	61	if (app_methods) {
	62	int idx;
	63	idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp);
	64	if (idx >= 0)
	65	return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx);
	66	}
b6eb9827	67	ret = OBJ_bsearch_ameth(&t, standard_methods, OSSL_NELEM(standard_methods));
12a765a5	68	if (ret == NULL \|\| *ret == NULL)
0f113f3e MC	69	return NULL;
	70	return *ret;
	71	}
	72
	73	/*
	74	* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL also
	75	* search through engines and set *pe to a functional reference to the engine
	76	* implementing 'type' or NULL if no engine implements it.
01b8b3c7 DSH	77	*/
	78
	79	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find(ENGINE *pe, int type)
0f113f3e MC	80	{
	81	const EVP_PKEY_ASN1_METHOD *t;
	82
	83	for (;;) {
	84	t = pkey_asn1_find(type);
	85	if (!t \|\| !(t->pkey_flags & ASN1_PKEY_ALIAS))
	86	break;
	87	type = t->pkey_base_id;
	88	}
	89	if (pe) {
01b8b3c7	90	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	91	ENGINE *e;
	92	/* type will contain the final unaliased type */
	93	e = ENGINE_get_pkey_asn1_meth_engine(type);
	94	if (e) {
	95	*pe = e;
	96	return ENGINE_get_pkey_asn1_meth(e, type);
	97	}
01b8b3c7	98	#endif
0f113f3e MC	99	*pe = NULL;
	100	}
	101	return t;
	102	}
01b8b3c7 DSH	103
01b8b3c7 DSH	104	const EVP_PKEY_ASN1_METHOD EVP_PKEY_asn1_find_str(ENGINE *pe,
0f113f3e MC	105	const char *str, int len)
	106	{
	107	int i;
3bf0c3fe RL	108	const EVP_PKEY_ASN1_METHOD *ameth = NULL;
3bf0c3fe RL	109
0f113f3e MC	110	if (len == -1)
	111	len = strlen(str);
	112	if (pe) {
01b8b3c7	113	#ifndef OPENSSL_NO_ENGINE
0f113f3e MC	114	ENGINE *e;
	115	ameth = ENGINE_pkey_asn1_find_str(&e, str, len);
	116	if (ameth) {
	117	/*
	118	* Convert structural into functional reference
	119	*/
	120	if (!ENGINE_init(e))
	121	ameth = NULL;
	122	ENGINE_free(e);
	123	*pe = e;
	124	return ameth;
	125	}
01b8b3c7	126	#endif
0f113f3e MC	127	*pe = NULL;
0f113f3e MC	128	}
3bf0c3fe	129	for (i = EVP_PKEY_asn1_get_count(); i-- > 0; ) {
0f113f3e MC	130	ameth = EVP_PKEY_asn1_get0(i);
	131	if (ameth->pkey_flags & ASN1_PKEY_ALIAS)
	132	continue;
3bf0c3fe RL	133	if ((int)strlen(ameth->pem_str) == len
3bf0c3fe RL	134	&& strncasecmp(ameth->pem_str, str, len) == 0)
0f113f3e MC	135	return ameth;
	136	}
	137	return NULL;
	138	}
e4263314	139
e46691a0	140	int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e	141	{
3bf0c3fe RL	142	EVP_PKEY_ASN1_METHOD tmp = { 0, };
3bf0c3fe RL	143
a8600316 RL	144	/*
	145	* One of the following must be true:
	146	*
	147	* pem_str == NULL AND ASN1_PKEY_ALIAS is set
	148	* pem_str != NULL AND ASN1_PKEY_ALIAS is clear
	149	*
	150	* Anything else is an error and may lead to a corrupt ASN1 method table
	151	*/
	152	if (!((ameth->pem_str == NULL
	153	&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) != 0)
	154	\|\| (ameth->pem_str != NULL
	155	&& (ameth->pkey_flags & ASN1_PKEY_ALIAS) == 0))) {
	156	EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0, ERR_R_PASSED_INVALID_ARGUMENT);
	157	return 0;
	158	}
	159
0f113f3e MC	160	if (app_methods == NULL) {
0f113f3e MC	161	app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp);
90945fa3	162	if (app_methods == NULL)
0f113f3e MC	163	return 0;
0f113f3e MC	164	}
3bf0c3fe RL	165
	166	tmp.pkey_id = ameth->pkey_id;
	167	if (sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp) >= 0) {
	168	EVPerr(EVP_F_EVP_PKEY_ASN1_ADD0,
	169	EVP_R_PKEY_APPLICATION_ASN1_METHOD_ALREADY_REGISTERED);
	170	return 0;
	171	}
	172
0f113f3e MC	173	if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth))
	174	return 0;
	175	sk_EVP_PKEY_ASN1_METHOD_sort(app_methods);
	176	return 1;
	177	}
18e377b4	178
e46691a0	179	int EVP_PKEY_asn1_add_alias(int to, int from)
0f113f3e MC	180	{
	181	EVP_PKEY_ASN1_METHOD *ameth;
	182	ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL);
90945fa3	183	if (ameth == NULL)
0f113f3e MC	184	return 0;
	185	ameth->pkey_base_id = to;
	186	if (!EVP_PKEY_asn1_add0(ameth)) {
	187	EVP_PKEY_asn1_free(ameth);
	188	return 0;
	189	}
	190	return 1;
	191	}
	192
	193	int EVP_PKEY_asn1_get0_info(int ppkey_id, int ppkey_base_id,
	194	int ppkey_flags, const char *pinfo,
	195	const char **ppem_str,
	196	const EVP_PKEY_ASN1_METHOD *ameth)
	197	{
	198	if (!ameth)
	199	return 0;
	200	if (ppkey_id)
	201	*ppkey_id = ameth->pkey_id;
	202	if (ppkey_base_id)
	203	*ppkey_base_id = ameth->pkey_base_id;
	204	if (ppkey_flags)
	205	*ppkey_flags = ameth->pkey_flags;
	206	if (pinfo)
	207	*pinfo = ameth->info;
	208	if (ppem_str)
	209	*ppem_str = ameth->pem_str;
	210	return 1;
	211	}
	212
8900f3e3	213	const EVP_PKEY_ASN1_METHOD EVP_PKEY_get0_asn1(const EVP_PKEY pkey)
0f113f3e MC	214	{
	215	return pkey->ameth;
	216	}
	217
	218	EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_new(int id, int flags,
	219	const char pem_str, const char info)
	220	{
b51bce94 RS	221	EVP_PKEY_ASN1_METHOD ameth = OPENSSL_zalloc(sizeof(ameth));
b51bce94 RS	222
90945fa3	223	if (ameth == NULL)
0f113f3e MC	224	return NULL;
0f113f3e MC	225
0f113f3e MC	226	ameth->pkey_id = id;
	227	ameth->pkey_base_id = id;
	228	ameth->pkey_flags = flags \| ASN1_PKEY_DYNAMIC;
	229
	230	if (info) {
7644a9ae	231	ameth->info = OPENSSL_strdup(info);
0f113f3e MC	232	if (!ameth->info)
0f113f3e MC	233	goto err;
64b25758	234	}
0f113f3e MC	235
0f113f3e MC	236	if (pem_str) {
7644a9ae	237	ameth->pem_str = OPENSSL_strdup(pem_str);
0f113f3e MC	238	if (!ameth->pem_str)
0f113f3e MC	239	goto err;
64b25758	240	}
0f113f3e MC	241
	242	return ameth;
	243
	244	err:
0f113f3e MC	245	EVP_PKEY_asn1_free(ameth);
	246	return NULL;
	247
	248	}
	249
	250	void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst,
	251	const EVP_PKEY_ASN1_METHOD *src)
	252	{
472a88b7 MC	253	int pkey_id = dst->pkey_id;
	254	int pkey_base_id = dst->pkey_base_id;
	255	unsigned long pkey_flags = dst->pkey_flags;
	256	char *pem_str = dst->pem_str;
	257	char *info = dst->info;
	258
	259	dst = src;
	260
	261	/* We only copy the function pointers so restore the other values */
	262	dst->pkey_id = pkey_id;
	263	dst->pkey_base_id = pkey_base_id;
	264	dst->pkey_flags = pkey_flags;
	265	dst->pem_str = pem_str;
	266	dst->info = info;
0f113f3e	267	}
e69adea5	268
d82e2718	269	void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth)
0f113f3e MC	270	{
0f113f3e MC	271	if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) {
b548a1f1 RS	272	OPENSSL_free(ameth->pem_str);
b548a1f1 RS	273	OPENSSL_free(ameth->info);
0f113f3e MC	274	OPENSSL_free(ameth);
	275	}
	276	}
18e377b4 DSH	277
18e377b4 DSH	278	void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e	279	int (pub_decode) (EVP_PKEY pk,
7674e923	280	const X509_PUBKEY *pub),
0f113f3e MC	281	int (pub_encode) (X509_PUBKEY pub,
	282	const EVP_PKEY *pk),
	283	int (pub_cmp) (const EVP_PKEY a,
	284	const EVP_PKEY *b),
	285	int (pub_print) (BIO out,
	286	const EVP_PKEY *pkey,
	287	int indent, ASN1_PCTX *pctx),
	288	int (pkey_size) (const EVP_PKEY pk),
	289	int (pkey_bits) (const EVP_PKEY pk))
	290	{
	291	ameth->pub_decode = pub_decode;
	292	ameth->pub_encode = pub_encode;
	293	ameth->pub_cmp = pub_cmp;
	294	ameth->pub_print = pub_print;
	295	ameth->pkey_size = pkey_size;
	296	ameth->pkey_bits = pkey_bits;
	297	}
18e377b4 DSH	298
18e377b4 DSH	299	void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e	300	int (priv_decode) (EVP_PKEY pk,
245c6bc3	301	const PKCS8_PRIV_KEY_INFO
0f113f3e MC	302	*p8inf),
	303	int (priv_encode) (PKCS8_PRIV_KEY_INFO p8,
	304	const EVP_PKEY *pk),
	305	int (priv_print) (BIO out,
	306	const EVP_PKEY *pkey,
	307	int indent,
	308	ASN1_PCTX *pctx))
	309	{
	310	ameth->priv_decode = priv_decode;
	311	ameth->priv_encode = priv_encode;
	312	ameth->priv_print = priv_print;
	313	}
18e377b4 DSH	314
18e377b4 DSH	315	void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	316	int (param_decode) (EVP_PKEY pkey,
	317	const unsigned char **pder,
	318	int derlen),
	319	int (param_encode) (const EVP_PKEY pkey,
	320	unsigned char **pder),
	321	int (param_missing) (const EVP_PKEY pk),
	322	int (param_copy) (EVP_PKEY to,
	323	const EVP_PKEY *from),
	324	int (param_cmp) (const EVP_PKEY a,
	325	const EVP_PKEY *b),
	326	int (param_print) (BIO out,
	327	const EVP_PKEY *pkey,
	328	int indent, ASN1_PCTX *pctx))
	329	{
	330	ameth->param_decode = param_decode;
	331	ameth->param_encode = param_encode;
	332	ameth->param_missing = param_missing;
	333	ameth->param_copy = param_copy;
	334	ameth->param_cmp = param_cmp;
	335	ameth->param_print = param_print;
	336	}
18e377b4 DSH	337
18e377b4 DSH	338	void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	339	void (pkey_free) (EVP_PKEY pkey))
	340	{
	341	ameth->pkey_free = pkey_free;
	342	}
18e377b4 DSH	343
18e377b4 DSH	344	void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	345	int (pkey_ctrl) (EVP_PKEY pkey, int op,
	346	long arg1, void *arg2))
	347	{
	348	ameth->pkey_ctrl = pkey_ctrl;
	349	}
2514fa79 DSH	350
2514fa79 DSH	351	void EVP_PKEY_asn1_set_security_bits(EVP_PKEY_ASN1_METHOD *ameth,
0f113f3e MC	352	int (*pkey_security_bits) (const EVP_PKEY
	353	*pk))
	354	{
	355	ameth->pkey_security_bits = pkey_security_bits;
	356	}
3418f7b7 SA	357
	358	void EVP_PKEY_asn1_set_item(EVP_PKEY_ASN1_METHOD *ameth,
	359	int (item_verify) (EVP_MD_CTX ctx,
	360	const ASN1_ITEM *it,
	361	void *asn,
	362	X509_ALGOR *a,
	363	ASN1_BIT_STRING *sig,
	364	EVP_PKEY *pkey),
	365	int (item_sign) (EVP_MD_CTX ctx,
	366	const ASN1_ITEM *it,
	367	void *asn,
	368	X509_ALGOR *alg1,
	369	X509_ALGOR *alg2,
	370	ASN1_BIT_STRING *sig))
	371	{
	372	ameth->item_sign = item_sign;
	373	ameth->item_verify = item_verify;
	374	}
5e006082 RL	375
	376	void EVP_PKEY_asn1_set_siginf(EVP_PKEY_ASN1_METHOD *ameth,
	377	int (siginf_set) (X509_SIG_INFO siginf,
	378	const X509_ALGOR *alg,
	379	const ASN1_STRING *sig))
	380	{
	381	ameth->siginf_set = siginf_set;
	382	}
	383
	384	void EVP_PKEY_asn1_set_check(EVP_PKEY_ASN1_METHOD *ameth,
	385	int (pkey_check) (const EVP_PKEY pk))
	386	{
	387	ameth->pkey_check = pkey_check;
	388	}
b0004708 PY	389
	390	void EVP_PKEY_asn1_set_public_check(EVP_PKEY_ASN1_METHOD *ameth,
	391	int (pkey_pub_check) (const EVP_PKEY pk))
	392	{
	393	ameth->pkey_public_check = pkey_pub_check;
	394	}
	395
	396	void EVP_PKEY_asn1_set_param_check(EVP_PKEY_ASN1_METHOD *ameth,
	397	int (pkey_param_check) (const EVP_PKEY pk))
	398	{
	399	ameth->pkey_param_check = pkey_param_check;
	400	}
e8f9f08f MC	401
	402	void EVP_PKEY_asn1_set_set_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	403	int (set_priv_key) (EVP_PKEY pk,
	404	const unsigned char
	405	*priv,
	406	size_t len))
	407	{
	408	ameth->set_priv_key = set_priv_key;
	409	}
	410
	411	void EVP_PKEY_asn1_set_set_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	412	int (set_pub_key) (EVP_PKEY pk,
	413	const unsigned char *pub,
	414	size_t len))
	415	{
	416	ameth->set_pub_key = set_pub_key;
	417	}
72ff0a54 MC	418
	419	void EVP_PKEY_asn1_set_get_priv_key(EVP_PKEY_ASN1_METHOD *ameth,
	420	int (get_priv_key) (const EVP_PKEY pk,
	421	unsigned char *priv,
	422	size_t *len))
	423	{
	424	ameth->get_priv_key = get_priv_key;
	425	}
	426
	427	void EVP_PKEY_asn1_set_get_pub_key(EVP_PKEY_ASN1_METHOD *ameth,
	428	int (get_pub_key) (const EVP_PKEY pk,
	429	unsigned char *pub,
	430	size_t *len))
	431	{
	432	ameth->get_pub_key = get_pub_key;
	433	}