1/*
2 * Copyright 1999-2020 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/*
11 * DSA low level APIs are deprecated for public use, but still ok for
12 * internal use.
13 */
14#include "internal/deprecated.h"
15
16#include <stdio.h>
17#include "internal/cryptlib.h"
18#include "dsa_local.h"
19#include <openssl/asn1.h>
20#include <openssl/asn1t.h>
21#include <openssl/rand.h>
22#include "crypto/asn1_dsa.h"
23
24/* Override the default free and new methods */
25static int dsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
26                  void *exarg)
27{
28    if (operation == ASN1_OP_NEW_PRE) {
29        *pval = (ASN1_VALUE *)DSA_new();
30        if (*pval != NULL)
31            return 2;
32        return 0;
33    } else if (operation == ASN1_OP_FREE_PRE) {
34        DSA_free((DSA *)*pval);
35        *pval = NULL;
36        return 2;
37    }
38    return 1;
39}
40
41ASN1_SEQUENCE_cb(DSAPrivateKey, dsa_cb) = {
42        ASN1_EMBED(DSA, version, INT32),
43        ASN1_SIMPLE(DSA, params.p, BIGNUM),
44        ASN1_SIMPLE(DSA, params.q, BIGNUM),
45        ASN1_SIMPLE(DSA, params.g, BIGNUM),
46        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
47        ASN1_SIMPLE(DSA, priv_key, CBIGNUM)
48} static_ASN1_SEQUENCE_END_cb(DSA, DSAPrivateKey)
49
50IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAPrivateKey, DSAPrivateKey)
51
52ASN1_SEQUENCE_cb(DSAparams, dsa_cb) = {
53        ASN1_SIMPLE(DSA, params.p, BIGNUM),
54        ASN1_SIMPLE(DSA, params.q, BIGNUM),
55        ASN1_SIMPLE(DSA, params.g, BIGNUM),
56} static_ASN1_SEQUENCE_END_cb(DSA, DSAparams)
57
58IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAparams, DSAparams)
59
60ASN1_SEQUENCE_cb(DSAPublicKey, dsa_cb) = {
61        ASN1_SIMPLE(DSA, pub_key, BIGNUM),
62        ASN1_SIMPLE(DSA, params.p, BIGNUM),
63        ASN1_SIMPLE(DSA, params.q, BIGNUM),
64        ASN1_SIMPLE(DSA, params.g, BIGNUM)
65} static_ASN1_SEQUENCE_END_cb(DSA, DSAPublicKey)
66
67IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAPublicKey, DSAPublicKey)
68
69DSA *DSAparams_dup(const DSA *dsa)
70{
71    return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
72}
73