2 * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (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
12 #include "internal/cryptlib.h"
13 #include <openssl/x509.h>
14 #include <openssl/rand.h>
15 #include "crypto/asn1.h"
16 #include "crypto/evp.h"
17 #include "crypto/x509.h"
19 /* Extract a private key from a PKCS8 structure */
21 EVP_PKEY *EVP_PKCS82PKEY_with_libctx(const PKCS8_PRIV_KEY_INFO *p8,
22 OPENSSL_CTX *libctx, const char *propq)
24 EVP_PKEY *pkey = NULL;
25 const ASN1_OBJECT *algoid;
28 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
31 if ((pkey = EVP_PKEY_new()) == NULL) {
32 EVPerr(0, ERR_R_MALLOC_FAILURE);
36 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {
37 EVPerr(0, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
38 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
39 ERR_add_error_data(2, "TYPE=", obj_tmp);
43 if (pkey->ameth->priv_decode_with_libctx != NULL) {
44 if (!pkey->ameth->priv_decode_with_libctx(pkey, p8, libctx, propq))
46 } else if (pkey->ameth->priv_decode != NULL) {
47 if (!pkey->ameth->priv_decode(pkey, p8)) {
48 EVPerr(0, EVP_R_PRIVATE_KEY_DECODE_ERROR);
52 EVPerr(0, EVP_R_METHOD_NOT_SUPPORTED);
63 EVP_PKEY *EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8)
65 return EVP_PKCS82PKEY_with_libctx(p8, NULL, NULL);
68 /* Turn a private key into a PKCS8 structure */
70 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(const EVP_PKEY *pkey)
72 PKCS8_PRIV_KEY_INFO *p8 = PKCS8_PRIV_KEY_INFO_new();
74 EVPerr(EVP_F_EVP_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
78 /* Force a key downgrade if that's possible */
79 /* TODO(3.0) Is there a better way for provider-native keys? */
80 if (EVP_PKEY_get0(pkey) == NULL)
84 if (pkey->ameth->priv_encode) {
85 if (!pkey->ameth->priv_encode(p8, pkey)) {
86 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_PRIVATE_KEY_ENCODE_ERROR);
90 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_METHOD_NOT_SUPPORTED);
94 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
99 PKCS8_PRIV_KEY_INFO_free(p8);
103 /* EVP_PKEY attribute functions */
105 int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
107 return X509at_get_attr_count(key->attributes);
110 int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos)
112 return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
115 int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, const ASN1_OBJECT *obj,
118 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
121 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
123 return X509at_get_attr(key->attributes, loc);
126 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
128 return X509at_delete_attr(key->attributes, loc);
131 int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
133 if (X509at_add1_attr(&key->attributes, attr))
138 int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
139 const ASN1_OBJECT *obj, int type,
140 const unsigned char *bytes, int len)
142 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len))
147 int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
149 const unsigned char *bytes, int len)
151 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len))
156 int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
157 const char *attrname, int type,
158 const unsigned char *bytes, int len)
160 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, bytes, len))
165 const char *EVP_PKEY_get0_first_alg_name(const EVP_PKEY *key)
167 const EVP_PKEY_ASN1_METHOD *ameth;
168 const char *name = NULL;
170 if (key->keymgmt != NULL)
171 return EVP_KEYMGMT_get0_first_name(key->keymgmt);
173 /* Otherwise fallback to legacy */
174 ameth = EVP_PKEY_get0_asn1(key);
176 EVP_PKEY_asn1_get0_info(NULL, NULL,
177 NULL, NULL, &name, ameth);