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Diffstat (limited to 'openssl/crypto/des/cbc3_enc.c')
| -rw-r--r-- | openssl/crypto/des/cbc3_enc.c | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/openssl/crypto/des/cbc3_enc.c b/openssl/crypto/des/cbc3_enc.c new file mode 100644 index 0000000..249518a --- /dev/null +++ b/openssl/crypto/des/cbc3_enc.c @@ -0,0 +1,95 @@ +/* crypto/des/cbc3_enc.c */ +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) + * All rights reserved. + * + * This package is an SSL implementation written + * by Eric Young (eay@cryptsoft.com). + * The implementation was written so as to conform with Netscapes SSL. + * + * This library is free for commercial and non-commercial use as long as + * the following conditions are aheared to. The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. The SSL documentation + * included with this distribution is covered by the same copyright terms + * except that the holder is Tim Hudson (tjh@cryptsoft.com). + * + * Copyright remains Eric Young's, and as such any Copyright notices in + * the code are not to be removed. + * If this package is used in a product, Eric Young should be given attribution + * as the author of the parts of the library used. + * This can be in the form of a textual message at program startup or + * in documentation (online or textual) provided with the package. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * "This product includes cryptographic software written by + * Eric Young (eay@cryptsoft.com)" + * The word 'cryptographic' can be left out if the rouines from the library + * being used are not cryptographic related :-). + * 4. If you include any Windows specific code (or a derivative thereof) from + * the apps directory (application code) you must include an acknowledgement: + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" + * + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * The licence and distribution terms for any publically available version or + * derivative of this code cannot be changed. i.e. this code cannot simply be + * copied and put under another distribution licence + * [including the GNU Public Licence.] + */ + +#include "des_locl.h" + +/* HAS BUGS! DON'T USE - this is only present for use in des.c */ +void DES_3cbc_encrypt(DES_cblock *input, DES_cblock *output, long length, + DES_key_schedule ks1, DES_key_schedule ks2, + DES_cblock *iv1, DES_cblock *iv2, int enc) +{ + int off = ((int)length - 1) / 8; + long l8 = ((length + 7) / 8) * 8; + DES_cblock niv1, niv2; + + if (enc == DES_ENCRYPT) { + DES_cbc_encrypt((unsigned char *)input, + (unsigned char *)output, length, &ks1, iv1, enc); + if (length >= sizeof(DES_cblock)) + memcpy(niv1, output[off], sizeof(DES_cblock)); + DES_cbc_encrypt((unsigned char *)output, + (unsigned char *)output, l8, &ks2, iv1, !enc); + DES_cbc_encrypt((unsigned char *)output, + (unsigned char *)output, l8, &ks1, iv2, enc); + if (length >= sizeof(DES_cblock)) + memcpy(niv2, output[off], sizeof(DES_cblock)); + } else { + if (length >= sizeof(DES_cblock)) + memcpy(niv2, input[off], sizeof(DES_cblock)); + DES_cbc_encrypt((unsigned char *)input, + (unsigned char *)output, l8, &ks1, iv2, enc); + DES_cbc_encrypt((unsigned char *)output, + (unsigned char *)output, l8, &ks2, iv1, !enc); + if (length >= sizeof(DES_cblock)) + memcpy(niv1, output[off], sizeof(DES_cblock)); + DES_cbc_encrypt((unsigned char *)output, + (unsigned char *)output, length, &ks1, iv1, enc); + } + memcpy(*iv1, niv1, sizeof(DES_cblock)); + memcpy(*iv2, niv2, sizeof(DES_cblock)); +} |