1 | /* |
2 | * Copyright 2019 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 "internal/cryptlib.h" |
12 | #include <openssl/evp.h> |
13 | #include <openssl/asn1.h> |
14 | #include "crypto/evp.h" |
15 | #include "crypto/asn1.h" |
16 | |
17 | EVP_PKEY *d2i_KeyParams(int type, EVP_PKEY **a, const unsigned char **pp, |
18 | long length) |
19 | { |
20 | EVP_PKEY *ret = NULL; |
21 | const unsigned char *p = *pp; |
22 | |
23 | if ((a == NULL) || (*a == NULL)) { |
24 | if ((ret = EVP_PKEY_new()) == NULL) |
25 | return NULL; |
26 | } else |
27 | ret = *a; |
28 | |
29 | if (type != EVP_PKEY_id(ret) && !EVP_PKEY_set_type(ret, type)) |
30 | goto err; |
31 | |
32 | if (ret->ameth == NULL || ret->ameth->param_decode == NULL) { |
33 | ASN1err(ASN1_F_D2I_KEYPARAMS, ASN1_R_UNSUPPORTED_TYPE); |
34 | goto err; |
35 | } |
36 | |
37 | if (!ret->ameth->param_decode(ret, &p, length)) |
38 | goto err; |
39 | |
40 | if (a != NULL) |
41 | (*a) = ret; |
42 | return ret; |
43 | err: |
44 | if (a == NULL || *a != ret) |
45 | EVP_PKEY_free(ret); |
46 | return NULL; |
47 | } |
48 | |
49 | EVP_PKEY *d2i_KeyParams_bio(int type, EVP_PKEY **a, BIO *in) |
50 | { |
51 | BUF_MEM *b = NULL; |
52 | const unsigned char *p; |
53 | void *ret = NULL; |
54 | int len; |
55 | |
56 | len = asn1_d2i_read_bio(in, &b); |
57 | if (len < 0) |
58 | goto err; |
59 | |
60 | p = (unsigned char *)b->data; |
61 | ret = d2i_KeyParams(type, a, &p, len); |
62 | err: |
63 | BUF_MEM_free(b); |
64 | return ret; |
65 | } |
66 | |