1/*
2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
8 */
9
10#include <stdio.h>
11#include <stdlib.h>
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"
18
19/* Extract a private key from a PKCS8 structure */
20
21EVP_PKEY *EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO *p8)
22{
23 EVP_PKEY *pkey = NULL;
24 const ASN1_OBJECT *algoid;
25 char obj_tmp[80];
26
27 if (!PKCS8_pkey_get0(&algoid, NULL, NULL, NULL, p8))
28 return NULL;
29
30 if ((pkey = EVP_PKEY_new()) == NULL) {
31 EVPerr(EVP_F_EVP_PKCS82PKEY, ERR_R_MALLOC_FAILURE);
32 return NULL;
33 }
34
35 if (!EVP_PKEY_set_type(pkey, OBJ_obj2nid(algoid))) {
36 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
37 i2t_ASN1_OBJECT(obj_tmp, 80, algoid);
38 ERR_add_error_data(2, "TYPE=", obj_tmp);
39 goto error;
40 }
41
42 if (pkey->ameth->priv_decode) {
43 if (!pkey->ameth->priv_decode(pkey, p8)) {
44 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_PRIVATE_KEY_DECODE_ERROR);
45 goto error;
46 }
47 } else {
48 EVPerr(EVP_F_EVP_PKCS82PKEY, EVP_R_METHOD_NOT_SUPPORTED);
49 goto error;
50 }
51
52 return pkey;
53
54 error:
55 EVP_PKEY_free(pkey);
56 return NULL;
57}
58
59/* Turn a private key into a PKCS8 structure */
60
61PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(const EVP_PKEY *pkey)
62{
63 PKCS8_PRIV_KEY_INFO *p8 = PKCS8_PRIV_KEY_INFO_new();
64 if (p8 == NULL) {
65 EVPerr(EVP_F_EVP_PKEY2PKCS8, ERR_R_MALLOC_FAILURE);
66 return NULL;
67 }
68
69 if (pkey->ameth) {
70 if (pkey->ameth->priv_encode) {
71 if (!pkey->ameth->priv_encode(p8, pkey)) {
72 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_PRIVATE_KEY_ENCODE_ERROR);
73 goto error;
74 }
75 } else {
76 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_METHOD_NOT_SUPPORTED);
77 goto error;
78 }
79 } else {
80 EVPerr(EVP_F_EVP_PKEY2PKCS8, EVP_R_UNSUPPORTED_PRIVATE_KEY_ALGORITHM);
81 goto error;
82 }
83 return p8;
84 error:
85 PKCS8_PRIV_KEY_INFO_free(p8);
86 return NULL;
87}
88
89/* EVP_PKEY attribute functions */
90
91int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
92{
93 return X509at_get_attr_count(key->attributes);
94}
95
96int EVP_PKEY_get_attr_by_NID(const EVP_PKEY *key, int nid, int lastpos)
97{
98 return X509at_get_attr_by_NID(key->attributes, nid, lastpos);
99}
100
101int EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY *key, const ASN1_OBJECT *obj,
102 int lastpos)
103{
104 return X509at_get_attr_by_OBJ(key->attributes, obj, lastpos);
105}
106
107X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
108{
109 return X509at_get_attr(key->attributes, loc);
110}
111
112X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
113{
114 return X509at_delete_attr(key->attributes, loc);
115}
116
117int EVP_PKEY_add1_attr(EVP_PKEY *key, X509_ATTRIBUTE *attr)
118{
119 if (X509at_add1_attr(&key->attributes, attr))
120 return 1;
121 return 0;
122}
123
124int EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY *key,
125 const ASN1_OBJECT *obj, int type,
126 const unsigned char *bytes, int len)
127{
128 if (X509at_add1_attr_by_OBJ(&key->attributes, obj, type, bytes, len))
129 return 1;
130 return 0;
131}
132
133int EVP_PKEY_add1_attr_by_NID(EVP_PKEY *key,
134 int nid, int type,
135 const unsigned char *bytes, int len)
136{
137 if (X509at_add1_attr_by_NID(&key->attributes, nid, type, bytes, len))
138 return 1;
139 return 0;
140}
141
142int EVP_PKEY_add1_attr_by_txt(EVP_PKEY *key,
143 const char *attrname, int type,
144 const unsigned char *bytes, int len)
145{
146 if (X509at_add1_attr_by_txt(&key->attributes, attrname, type, bytes, len))
147 return 1;
148 return 0;
149}
150