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Annotation of truecrypt/crypto/bf_ecb.c, revision 1.1.1.1

1.1       root        1: /* crypto/bf/bf_ecb.c */
                      2: /* Copyright (C) 1995-1997 Eric Young ([email protected])
                      3:  * All rights reserved.
                      4:  *
                      5:  * This package is an SSL implementation written
                      6:  * by Eric Young ([email protected]).
                      7:  * The implementation was written so as to conform with Netscapes SSL.
                      8:  * 
                      9:  * This library is free for commercial and non-commercial use as long as
                     10:  * the following conditions are aheared to.  The following conditions
                     11:  * apply to all code found in this distribution, be it the RC4, RSA,
                     12:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
                     13:  * included with this distribution is covered by the same copyright terms
                     14:  * except that the holder is Tim Hudson ([email protected]).
                     15:  * 
                     16:  * Copyright remains Eric Young's, and as such any Copyright notices in
                     17:  * the code are not to be removed.
                     18:  * If this package is used in a product, Eric Young should be given attribution
                     19:  * as the author of the parts of the library used.
                     20:  * This can be in the form of a textual message at program startup or
                     21:  * in documentation (online or textual) provided with the package.
                     22:  * 
                     23:  * Redistribution and use in source and binary forms, with or without
                     24:  * modification, are permitted provided that the following conditions
                     25:  * are met:
                     26:  * 1. Redistributions of source code must retain the copyright
                     27:  *    notice, this list of conditions and the following disclaimer.
                     28:  * 2. Redistributions in binary form must reproduce the above copyright
                     29:  *    notice, this list of conditions and the following disclaimer in the
                     30:  *    documentation and/or other materials provided with the distribution.
                     31:  * 3. All advertising materials mentioning features or use of this software
                     32:  *    must display the following acknowledgement:
                     33:  *    "This product includes cryptographic software written by
                     34:  *     Eric Young ([email protected])"
                     35:  *    The word 'cryptographic' can be left out if the rouines from the library
                     36:  *    being used are not cryptographic related :-).
                     37:  * 4. If you include any Windows specific code (or a derivative thereof) from 
                     38:  *    the apps directory (application code) you must include an acknowledgement:
                     39:  *    "This product includes software written by Tim Hudson ([email protected])"
                     40:  * 
                     41:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
                     42:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     43:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     44:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     45:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     46:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     47:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     48:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     49:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     50:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     51:  * SUCH DAMAGE.
                     52:  * 
                     53:  * The licence and distribution terms for any publically available version or
                     54:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
                     55:  * copied and put under another distribution licence
                     56:  * [including the GNU Public Licence.]
                     57:  */
                     58: 
                     59: #include "blowfish.h"
                     60: #include "bf_locl.h"
                     61: 
                     62: #pragma warning( disable : 4131 )
                     63: 
                     64: /* Blowfish as implemented from 'Blowfish: Springer-Verlag paper'
                     65:  * (From LECTURE NOTES IN COIMPUTER SCIENCE 809, FAST SOFTWARE ENCRYPTION,
                     66:  * CAMBRIDGE SECURITY WORKSHOP, CAMBRIDGE, U.K., DECEMBER 9-11, 1993)
                     67:  */
                     68: 
                     69: char *BF_version="BlowFish part of SSLeay 0.8.2b 08-Jan-1998";
                     70: 
                     71: char *BF_options()
                     72:        {
                     73: #ifdef BF_PTR
                     74:        return("blowfish(ptr)");
                     75: #elif defined(BF_PTR2)
                     76:        return("blowfish(ptr2)");
                     77: #else
                     78:        return("blowfish(idx)");
                     79: #endif
                     80:        }
                     81: 
                     82: void BF_ecb_encrypt(in, out, ks, encrypt)
                     83: unsigned char *in;
                     84: unsigned char *out;
                     85: BF_KEY *ks;
                     86: int encrypt;
                     87:        {
                     88:        BF_LONG l,d[2];
                     89: 
                     90:        n2l(in,l); d[0]=l;
                     91:        n2l(in,l); d[1]=l;
                     92:        if (encrypt)
                     93:                BF_encrypt(d,ks);
                     94:        else
                     95:                BF_decrypt(d,ks);
                     96:        l=d[0]; l2n(l,out);
                     97:        l=d[1]; l2n(l,out);
                     98:        l=d[0]=d[1]=0;
                     99:        }
                    100: 

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