workbench/network/WirelessManager/src/crypto/crypto_internal-rsa.c

   1 /*
   2  * Crypto wrapper for internal crypto implementation - RSA parts
   3  * Copyright (c) 2006-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "crypto.h"
  19 #include "tls/rsa.h"
  20 #include "tls/bignum.h"
  21 #include "tls/pkcs1.h"
  22 #include "tls/pkcs8.h"
  23
  24 /* Dummy structures; these are just typecast to struct crypto_rsa_key */
  25 struct crypto_public_key;
  26 struct crypto_private_key;
  27
  28
  29 struct crypto_public_key * crypto_public_key_import(const u8 *key, size_t len)
  30 {
  31         return (struct crypto_public_key *)
  32                 crypto_rsa_import_public_key(key, len);
  33 }
  34
  35
  36 struct crypto_private_key * crypto_private_key_import(const u8 *key,
  37                                                       size_t len,
  38                                                       const char *passwd)
  39 {
  40         struct crypto_private_key *res;
  41
  42         /* First, check for possible PKCS #8 encoding */
  43         res = pkcs8_key_import(key, len);
  44         if (res)
  45                 return res;
  46
  47         if (passwd) {
  48                 /* Try to parse as encrypted PKCS #8 */
  49                 res = pkcs8_enc_key_import(key, len, passwd);
  50                 if (res)
  51                         return res;
  52         }
  53
  54         /* Not PKCS#8, so try to import PKCS #1 encoded RSA private key */
  55         wpa_printf(MSG_DEBUG, "Trying to parse PKCS #1 encoded RSA private "
  56                    "key");
  57         return (struct crypto_private_key *)
  58                 crypto_rsa_import_private_key(key, len);
  59 }
  60
  61
  62 struct crypto_public_key * crypto_public_key_from_cert(const u8 *buf,
  63                                                        size_t len)
  64 {
  65         /* No X.509 support in crypto_internal.c */
  66         return NULL;
  67 }
  68
  69
  70 int crypto_public_key_encrypt_pkcs1_v15(struct crypto_public_key *key,
  71                                         const u8 *in, size_t inlen,
  72                                         u8 *out, size_t *outlen)
  73 {
  74         return pkcs1_encrypt(2, (struct crypto_rsa_key *) key,
  75                              0, in, inlen, out, outlen);
  76 }
  77
  78
  79 int crypto_private_key_decrypt_pkcs1_v15(struct crypto_private_key *key,
  80                                          const u8 *in, size_t inlen,
  81                                          u8 *out, size_t *outlen)
  82 {
  83         return pkcs1_v15_private_key_decrypt((struct crypto_rsa_key *) key,
  84                                              in, inlen, out, outlen);
  85 }
  86
  87
  88 int crypto_private_key_sign_pkcs1(struct crypto_private_key *key,
  89                                   const u8 *in, size_t inlen,
  90                                   u8 *out, size_t *outlen)
  91 {
  92         return pkcs1_encrypt(1, (struct crypto_rsa_key *) key,
  93                              1, in, inlen, out, outlen);
  94 }
  95
  96
  97 void crypto_public_key_free(struct crypto_public_key *key)
  98 {
  99         crypto_rsa_free((struct crypto_rsa_key *) key);
 100 }
 101
 102
 103 void crypto_private_key_free(struct crypto_private_key *key)
 104 {
 105         crypto_rsa_free((struct crypto_rsa_key *) key);
 106 }
 107
 108
 109 int crypto_public_key_decrypt_pkcs1(struct crypto_public_key *key,
 110                                     const u8 *crypt, size_t crypt_len,
 111                                     u8 *plain, size_t *plain_len)
 112 {
 113         return pkcs1_decrypt_public_key((struct crypto_rsa_key *) key,
 114                                         crypt, crypt_len, plain, plain_len);
 115 }