src/libpolarssl/openssl.h

   1 /**
   2  * \file openssl.h
   3  *
   4  * \brief OpenSSL wrapper (definitions, inline functions).
   5  *
   6  *  Copyright (C) 2006-2010, Brainspark B.V.
   7  *
   8  *  This file is part of PolarSSL (http://www.polarssl.org)
   9  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
  10  *
  11  *  All rights reserved.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License along
  24  *  with this program; if not, write to the Free Software Foundation, Inc.,
  25  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  26  */
  27 /*
  28  * OpenSSL wrapper contributed by David Barett
  29  */
  30 #ifndef POLARSSL_OPENSSL_H
  31 #define POLARSSL_OPENSSL_H
  32
  33 #include "aes.h"
  34 #include "md5.h"
  35 #include "rsa.h"
  36 #include "sha1.h"
  37
  38 #define AES_SIZE                16
  39 #define AES_BLOCK_SIZE          16
  40 #define AES_KEY                 aes_context
  41 #define MD5_CTX                 md5_context
  42 #define SHA_CTX                 sha1_context
  43
  44 #define SHA1_Init( CTX ) \
  45         sha1_starts( (CTX) )
  46 #define SHA1_Update(  CTX, BUF, LEN ) \
  47         sha1_update( (CTX), (unsigned char *)(BUF), (LEN) )
  48 #define SHA1_Final( OUT, CTX ) \
  49         sha1_finish( (CTX), (OUT) )
  50
  51 #define MD5_Init( CTX ) \
  52         md5_starts( (CTX) )
  53 #define MD5_Update( CTX, BUF, LEN ) \
  54         md5_update( (CTX), (unsigned char *)(BUF), (LEN) )
  55 #define MD5_Final( OUT, CTX ) \
  56         md5_finish( (CTX), (OUT) )
  57
  58 #define AES_set_encrypt_key( KEY, KEYSIZE, CTX ) \
  59         aes_setkey_enc( (CTX), (KEY), (KEYSIZE) )
  60 #define AES_set_decrypt_key( KEY, KEYSIZE, CTX ) \
  61         aes_setkey_dec( (CTX), (KEY), (KEYSIZE) )
  62 #define AES_cbc_encrypt( INPUT, OUTPUT, LEN, CTX, IV, MODE ) \
  63         aes_crypt_cbc( (CTX), (MODE), (LEN), (IV), (INPUT), (OUTPUT) )
  64
  65 #ifdef __cplusplus
  66 extern "C" {
  67 #endif
  68
  69 /*
  70  * RSA stuff follows. TODO: needs cleanup
  71  */
  72 inline int __RSA_Passthrough( void *output, void *input, int size )
  73 {
  74     memcpy( output, input, size );
  75     return size;
  76 }
  77
  78 inline rsa_context* d2i_RSA_PUBKEY( void *ignore, unsigned char **bufptr,
  79                                     int len )
  80 {
  81     unsigned char *buffer = *(unsigned char **) bufptr;
  82     rsa_context *rsa;
  83
  84     /*
  85      * Not a general-purpose parser: only parses public key from *exactly*
  86      *   openssl genrsa -out privkey.pem 512 (or 1024)
  87      *   openssl rsa -in privkey.pem -out privatekey.der -outform der
  88      *   openssl rsa -in privkey.pem -out pubkey.der -outform der -pubout
  89      *
  90      * TODO: make a general-purpose parse
  91      */
  92     if( ignore != 0 || ( len != 94 && len != 162 ) )
  93         return( 0 );
  94
  95     rsa = (rsa_context *) malloc( sizeof( rsa_rsa ) );
  96     if( rsa == NULL )
  97         return( 0 );
  98
  99     memset( rsa, 0, sizeof( rsa_context ) );
 100
 101     if( ( len ==  94 &&
 102           mpi_read_binary( &rsa->N, &buffer[ 25],  64 ) == 0 &&
 103           mpi_read_binary( &rsa->E, &buffer[ 91],   3 ) == 0 ) ||
 104         ( len == 162 &&
 105           mpi_read_binary( &rsa->N, &buffer[ 29], 128 ) == 0 ) &&
 106           mpi_read_binary( &rsa->E, &buffer[159],   3 ) == 0 )
 107     {
 108         /*
 109          * key read successfully
 110          */
 111         rsa->len = ( mpi_msb( &rsa->N ) + 7 ) >> 3;
 112         return( rsa );
 113     }
 114     else
 115     {
 116         memset( rsa, 0, sizeof( rsa_context ) );
 117         free( rsa );
 118         return( 0 );
 119     }
 120 }
 121
 122 #define RSA                     rsa_context
 123 #define RSA_PKCS1_PADDING       1 /* ignored; always encrypt with this */
 124 #define RSA_size( CTX )         (CTX)->len
 125 #define RSA_free( CTX )         rsa_free( CTX )
 126 #define ERR_get_error( )        "ERR_get_error() not supported"
 127 #define RSA_blinding_off( IGNORE )
 128
 129 #define d2i_RSAPrivateKey( a, b, c ) new rsa_context /* TODO: C++ bleh */
 130
 131 inline int RSA_public_decrypt ( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { int outsize=size; if( !rsa_pkcs1_decrypt( key, RSA_PUBLIC,  &outsize, input, output ) ) return outsize; else return -1; }
 132 inline int RSA_private_decrypt( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { int outsize=size; if( !rsa_pkcs1_decrypt( key, RSA_PRIVATE, &outsize, input, output ) ) return outsize; else return -1; }
 133 inline int RSA_public_encrypt ( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { if( !rsa_pkcs1_encrypt( key, RSA_PUBLIC,  size, input, output ) ) return RSA_size(key); else return -1; }
 134 inline int RSA_private_encrypt( int size, unsigned char* input, unsigned char* output, RSA* key, int ignore ) { if( !rsa_pkcs1_encrypt( key, RSA_PRIVATE, size, input, output ) ) return RSA_size(key); else return -1; }
 135
 136 #ifdef __cplusplus
 137 }
 138 #endif
 139
 140 #endif /* openssl.h */