crypto/dsa/dsa_asn1.c

   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 */
  25 static 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
  41 ASN1_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
  50 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAPrivateKey, DSAPrivateKey)
  51
  52 ASN1_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
  58 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAparams, DSAparams)
  59
  60 ASN1_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
  67 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_fname(DSA, DSAPublicKey, DSAPublicKey)
  68
  69 DSA *DSAparams_dup(const DSA *dsa)
  70 {
  71     return ASN1_item_dup(ASN1_ITEM_rptr(DSAparams), dsa);
  72 }