2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
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
11 #include "internal/cryptlib.h"
12 #include <openssl/bn.h>
13 #include <openssl/evp.h>
14 #include <openssl/objects.h>
15 #include <openssl/engine.h>
16 #include <openssl/x509.h>
17 #include <openssl/asn1.h>
18 #include "internal/asn1_int.h"
19 #include "internal/evp_int.h"
21 EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **a, const unsigned char **pp,
25 const unsigned char *p = *pp;
27 if ((a == NULL) || (*a == NULL)) {
28 if ((ret = EVP_PKEY_new()) == NULL) {
29 ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_EVP_LIB);
34 #ifndef OPENSSL_NO_ENGINE
35 ENGINE_finish(ret->engine);
40 if (!EVP_PKEY_set_type(ret, type)) {
41 ASN1err(ASN1_F_D2I_PRIVATEKEY, ASN1_R_UNKNOWN_PUBLIC_KEY_TYPE);
45 if (!ret->ameth->old_priv_decode ||
46 !ret->ameth->old_priv_decode(ret, &p, length)) {
47 if (ret->ameth->priv_decode) {
49 PKCS8_PRIV_KEY_INFO *p8 = NULL;
50 p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
53 tmp = EVP_PKCS82PKEY(p8);
54 PKCS8_PRIV_KEY_INFO_free(p8);
60 ASN1err(ASN1_F_D2I_PRIVATEKEY, ERR_R_ASN1_LIB);
69 if (a == NULL || *a != ret)
75 * This works like d2i_PrivateKey() except it automatically works out the
79 EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **a, const unsigned char **pp,
82 STACK_OF(ASN1_TYPE) *inkey;
83 const unsigned char *p;
87 * Dirty trick: read in the ASN1 data into a STACK_OF(ASN1_TYPE): by
88 * analyzing it we can determine the passed structure: this assumes the
89 * input is surrounded by an ASN1 SEQUENCE.
91 inkey = d2i_ASN1_SEQUENCE_ANY(NULL, &p, length);
94 * Since we only need to discern "traditional format" RSA and DSA keys we
95 * can just count the elements.
97 if (sk_ASN1_TYPE_num(inkey) == 6)
98 keytype = EVP_PKEY_DSA;
99 else if (sk_ASN1_TYPE_num(inkey) == 4)
100 keytype = EVP_PKEY_EC;
101 else if (sk_ASN1_TYPE_num(inkey) == 3) { /* This seems to be PKCS8, not
102 * traditional format */
103 PKCS8_PRIV_KEY_INFO *p8 = d2i_PKCS8_PRIV_KEY_INFO(NULL, &p, length);
106 sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
108 ASN1err(ASN1_F_D2I_AUTOPRIVATEKEY,
109 ASN1_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
112 ret = EVP_PKCS82PKEY(p8);
113 PKCS8_PRIV_KEY_INFO_free(p8);
122 keytype = EVP_PKEY_RSA;
123 sk_ASN1_TYPE_pop_free(inkey, ASN1_TYPE_free);
124 return d2i_PrivateKey(keytype, a, pp, length);