1 /*
2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
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
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
EVP_PKCS82PKEY(const PKCS8_PRIV_KEY_INFO * p8)21 EVP_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
EVP_PKEY2PKCS8(EVP_PKEY * pkey)61 PKCS8_PRIV_KEY_INFO *EVP_PKEY2PKCS8(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
EVP_PKEY_get_attr_count(const EVP_PKEY * key)91 int EVP_PKEY_get_attr_count(const EVP_PKEY *key)
92 {
93 return X509at_get_attr_count(key->attributes);
94 }
95
EVP_PKEY_get_attr_by_NID(const EVP_PKEY * key,int nid,int lastpos)96 int 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
EVP_PKEY_get_attr_by_OBJ(const EVP_PKEY * key,const ASN1_OBJECT * obj,int lastpos)101 int 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
EVP_PKEY_get_attr(const EVP_PKEY * key,int loc)107 X509_ATTRIBUTE *EVP_PKEY_get_attr(const EVP_PKEY *key, int loc)
108 {
109 return X509at_get_attr(key->attributes, loc);
110 }
111
EVP_PKEY_delete_attr(EVP_PKEY * key,int loc)112 X509_ATTRIBUTE *EVP_PKEY_delete_attr(EVP_PKEY *key, int loc)
113 {
114 return X509at_delete_attr(key->attributes, loc);
115 }
116
EVP_PKEY_add1_attr(EVP_PKEY * key,X509_ATTRIBUTE * attr)117 int 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
EVP_PKEY_add1_attr_by_OBJ(EVP_PKEY * key,const ASN1_OBJECT * obj,int type,const unsigned char * bytes,int len)124 int 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
EVP_PKEY_add1_attr_by_NID(EVP_PKEY * key,int nid,int type,const unsigned char * bytes,int len)133 int 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
EVP_PKEY_add1_attr_by_txt(EVP_PKEY * key,const char * attrname,int type,const unsigned char * bytes,int len)142 int 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