crypto/rsa/rsa_asn1.c

   1 /*
   2  * Copyright 2000-2016 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 "internal/cryptlib.h"
  12 #include <openssl/bn.h>
  13 #include <openssl/x509.h>
  14 #include <openssl/asn1t.h>
  15 #include "rsa_locl.h"
  16
  17 /* Override the default free and new methods */
  18 static int rsa_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  19                   void *exarg)
  20 {
  21     if (operation == ASN1_OP_NEW_PRE) {
  22         *pval = (ASN1_VALUE *)RSA_new();
  23         if (*pval != NULL)
  24             return 2;
  25         return 0;
  26     } else if (operation == ASN1_OP_FREE_PRE) {
  27         RSA_free((RSA *)*pval);
  28         *pval = NULL;
  29         return 2;
  30     }
  31     return 1;
  32 }
  33
  34 ASN1_SEQUENCE_cb(RSAPrivateKey, rsa_cb) = {
  35         ASN1_SIMPLE(RSA, version, INT32),
  36         ASN1_SIMPLE(RSA, n, BIGNUM),
  37         ASN1_SIMPLE(RSA, e, BIGNUM),
  38         ASN1_SIMPLE(RSA, d, CBIGNUM),
  39         ASN1_SIMPLE(RSA, p, CBIGNUM),
  40         ASN1_SIMPLE(RSA, q, CBIGNUM),
  41         ASN1_SIMPLE(RSA, dmp1, CBIGNUM),
  42         ASN1_SIMPLE(RSA, dmq1, CBIGNUM),
  43         ASN1_SIMPLE(RSA, iqmp, CBIGNUM)
  44 } ASN1_SEQUENCE_END_cb(RSA, RSAPrivateKey)
  45
  46
  47 ASN1_SEQUENCE_cb(RSAPublicKey, rsa_cb) = {
  48         ASN1_SIMPLE(RSA, n, BIGNUM),
  49         ASN1_SIMPLE(RSA, e, BIGNUM),
  50 } ASN1_SEQUENCE_END_cb(RSA, RSAPublicKey)
  51
  52 /* Free up maskHash */
  53 static int rsa_pss_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  54                       void *exarg)
  55 {
  56     if (operation == ASN1_OP_FREE_PRE) {
  57         RSA_PSS_PARAMS *pss = (RSA_PSS_PARAMS *)*pval;
  58         X509_ALGOR_free(pss->maskHash);
  59     }
  60     return 1;
  61 }
  62
  63 ASN1_SEQUENCE_cb(RSA_PSS_PARAMS, rsa_pss_cb) = {
  64         ASN1_EXP_OPT(RSA_PSS_PARAMS, hashAlgorithm, X509_ALGOR,0),
  65         ASN1_EXP_OPT(RSA_PSS_PARAMS, maskGenAlgorithm, X509_ALGOR,1),
  66         ASN1_EXP_OPT(RSA_PSS_PARAMS, saltLength, ASN1_INTEGER,2),
  67         ASN1_EXP_OPT(RSA_PSS_PARAMS, trailerField, ASN1_INTEGER,3)
  68 } ASN1_SEQUENCE_END_cb(RSA_PSS_PARAMS, RSA_PSS_PARAMS)
  69
  70 IMPLEMENT_ASN1_FUNCTIONS(RSA_PSS_PARAMS)
  71
  72 /* Free up maskHash */
  73 static int rsa_oaep_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
  74                        void *exarg)
  75 {
  76     if (operation == ASN1_OP_FREE_PRE) {
  77         RSA_OAEP_PARAMS *oaep = (RSA_OAEP_PARAMS *)*pval;
  78         X509_ALGOR_free(oaep->maskHash);
  79     }
  80     return 1;
  81 }
  82
  83 ASN1_SEQUENCE_cb(RSA_OAEP_PARAMS, rsa_oaep_cb) = {
  84         ASN1_EXP_OPT(RSA_OAEP_PARAMS, hashFunc, X509_ALGOR, 0),
  85         ASN1_EXP_OPT(RSA_OAEP_PARAMS, maskGenFunc, X509_ALGOR, 1),
  86         ASN1_EXP_OPT(RSA_OAEP_PARAMS, pSourceFunc, X509_ALGOR, 2),
  87 } ASN1_SEQUENCE_END_cb(RSA_OAEP_PARAMS, RSA_OAEP_PARAMS)
  88
  89 IMPLEMENT_ASN1_FUNCTIONS(RSA_OAEP_PARAMS)
  90
  91 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(RSA, RSAPrivateKey, RSAPrivateKey)
  92
  93 IMPLEMENT_ASN1_ENCODE_FUNCTIONS_const_fname(RSA, RSAPublicKey, RSAPublicKey)
  94
  95 RSA *RSAPublicKey_dup(RSA *rsa)
  96 {
  97     return ASN1_item_dup(ASN1_ITEM_rptr(RSAPublicKey), rsa);
  98 }
  99
 100 RSA *RSAPrivateKey_dup(RSA *rsa)
 101 {
 102     return ASN1_item_dup(ASN1_ITEM_rptr(RSAPrivateKey), rsa);
 103 }