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Annotation of truecrypt/crypto/bf_ecb.c, revision 1.1.1.4

1.1.1.4 ! root        1: /* Deprecated/legacy */
        !             2: 
1.1       root        3: /* crypto/bf/bf_ecb.c */
                      4: /* Copyright (C) 1995-1997 Eric Young ([email protected])
                      5:  * All rights reserved.
                      6:  *
                      7:  * This package is an SSL implementation written
                      8:  * by Eric Young ([email protected]).
                      9:  * The implementation was written so as to conform with Netscapes SSL.
                     10:  * 
                     11:  * This library is free for commercial and non-commercial use as long as
                     12:  * the following conditions are aheared to.  The following conditions
                     13:  * apply to all code found in this distribution, be it the RC4, RSA,
                     14:  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
                     15:  * included with this distribution is covered by the same copyright terms
                     16:  * except that the holder is Tim Hudson ([email protected]).
                     17:  * 
                     18:  * Copyright remains Eric Young's, and as such any Copyright notices in
                     19:  * the code are not to be removed.
                     20:  * If this package is used in a product, Eric Young should be given attribution
                     21:  * as the author of the parts of the library used.
                     22:  * This can be in the form of a textual message at program startup or
                     23:  * in documentation (online or textual) provided with the package.
                     24:  * 
                     25:  * Redistribution and use in source and binary forms, with or without
                     26:  * modification, are permitted provided that the following conditions
                     27:  * are met:
                     28:  * 1. Redistributions of source code must retain the copyright
                     29:  *    notice, this list of conditions and the following disclaimer.
                     30:  * 2. Redistributions in binary form must reproduce the above copyright
                     31:  *    notice, this list of conditions and the following disclaimer in the
                     32:  *    documentation and/or other materials provided with the distribution.
                     33:  * 3. All advertising materials mentioning features or use of this software
                     34:  *    must display the following acknowledgement:
                     35:  *    "This product includes cryptographic software written by
                     36:  *     Eric Young ([email protected])"
                     37:  *    The word 'cryptographic' can be left out if the rouines from the library
                     38:  *    being used are not cryptographic related :-).
                     39:  * 4. If you include any Windows specific code (or a derivative thereof) from 
                     40:  *    the apps directory (application code) you must include an acknowledgement:
                     41:  *    "This product includes software written by Tim Hudson ([email protected])"
                     42:  * 
                     43:  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
                     44:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     45:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     46:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     47:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     48:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     49:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     50:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     51:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     52:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     53:  * SUCH DAMAGE.
                     54:  * 
                     55:  * The licence and distribution terms for any publically available version or
                     56:  * derivative of this code cannot be changed.  i.e. this code cannot simply be
                     57:  * copied and put under another distribution licence
                     58:  * [including the GNU Public Licence.]
                     59:  */
                     60: 
1.1.1.2   root       61: /* Adapted for TrueCrypt by the TrueCrypt Foundation */
                     62: 
                     63: #include "Blowfish.h"
                     64: #include "Bf_locl.h"
1.1.1.3   root       65: #include "Common/Endian.h"
1.1       root       66: 
                     67: /* Blowfish as implemented from 'Blowfish: Springer-Verlag paper'
                     68:  * (From LECTURE NOTES IN COIMPUTER SCIENCE 809, FAST SOFTWARE ENCRYPTION,
                     69:  * CAMBRIDGE SECURITY WORKSHOP, CAMBRIDGE, U.K., DECEMBER 9-11, 1993)
                     70:  */
                     71: 
                     72: char *BF_version="BlowFish part of SSLeay 0.8.2b 08-Jan-1998";
                     73: 
                     74: char *BF_options()
                     75:        {
                     76: #ifdef BF_PTR
                     77:        return("blowfish(ptr)");
                     78: #elif defined(BF_PTR2)
                     79:        return("blowfish(ptr2)");
                     80: #else
                     81:        return("blowfish(idx)");
                     82: #endif
                     83:        }
                     84: 
                     85: void BF_ecb_encrypt(in, out, ks, encrypt)
                     86: unsigned char *in;
                     87: unsigned char *out;
                     88: BF_KEY *ks;
                     89: int encrypt;
                     90:        {
                     91:        BF_LONG l,d[2];
                     92: 
                     93:        n2l(in,l); d[0]=l;
                     94:        n2l(in,l); d[1]=l;
                     95:        if (encrypt)
                     96:                BF_encrypt(d,ks);
                     97:        else
                     98:                BF_decrypt(d,ks);
                     99:        l=d[0]; l2n(l,out);
                    100:        l=d[1]; l2n(l,out);
                    101:        l=d[0]=d[1]=0;
                    102:        }
                    103: 
1.1.1.2   root      104: void BF_ecb_le_encrypt(in, out, ks, encrypt)
                    105: unsigned char *in;
                    106: unsigned char *out;
                    107: BF_KEY *ks;
                    108: int encrypt;
                    109: {
                    110:        BF_LONG d[2];
                    111: 
                    112:        d[0] = LE32(((BF_LONG *)in)[0]);
                    113:        d[1] = LE32(((BF_LONG *)in)[1]);
                    114:        if (encrypt)
                    115:                BF_encrypt(d,ks);
                    116:        else
                    117:                BF_decrypt(d,ks);
                    118:        ((BF_LONG *)out)[0] = LE32(d[0]);
                    119:        ((BF_LONG *)out)[1] = LE32(d[1]);
                    120:        d[0]=d[1]=0;
                    121: }

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