diff options
Diffstat (limited to 'openssl/crypto/des/ncbc_enc.c')
| -rw-r--r-- | openssl/crypto/des/ncbc_enc.c | 164 |
1 files changed, 85 insertions, 79 deletions
diff --git a/openssl/crypto/des/ncbc_enc.c b/openssl/crypto/des/ncbc_enc.c index fda23d522..ab267cbf3 100644 --- a/openssl/crypto/des/ncbc_enc.c +++ b/openssl/crypto/des/ncbc_enc.c @@ -1,5 +1,5 @@ /* crypto/des/ncbc_enc.c */ -/* +/*- * #included by: * cbc_enc.c (DES_cbc_encrypt) * des_enc.c (DES_ncbc_encrypt) @@ -10,21 +10,21 @@ * 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: @@ -39,10 +39,10 @@ * 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 + * 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 @@ -54,7 +54,7 @@ * 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 @@ -65,84 +65,90 @@ #ifdef CBC_ENC_C__DONT_UPDATE_IV void DES_cbc_encrypt(const unsigned char *in, unsigned char *out, long length, - DES_key_schedule *_schedule, DES_cblock *ivec, int enc) + DES_key_schedule *_schedule, DES_cblock *ivec, int enc) #else -void DES_ncbc_encrypt(const unsigned char *in, unsigned char *out, long length, - DES_key_schedule *_schedule, DES_cblock *ivec, int enc) +void DES_ncbc_encrypt(const unsigned char *in, unsigned char *out, + long length, DES_key_schedule *_schedule, + DES_cblock *ivec, int enc) #endif - { - register DES_LONG tin0,tin1; - register DES_LONG tout0,tout1,xor0,xor1; - register long l=length; - DES_LONG tin[2]; - unsigned char *iv; +{ + register DES_LONG tin0, tin1; + register DES_LONG tout0, tout1, xor0, xor1; + register long l = length; + DES_LONG tin[2]; + unsigned char *iv; - iv = &(*ivec)[0]; + iv = &(*ivec)[0]; - if (enc) - { - c2l(iv,tout0); - c2l(iv,tout1); - for (l-=8; l>=0; l-=8) - { - c2l(in,tin0); - c2l(in,tin1); - tin0^=tout0; tin[0]=tin0; - tin1^=tout1; tin[1]=tin1; - DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT); - tout0=tin[0]; l2c(tout0,out); - tout1=tin[1]; l2c(tout1,out); - } - if (l != -8) - { - c2ln(in,tin0,tin1,l+8); - tin0^=tout0; tin[0]=tin0; - tin1^=tout1; tin[1]=tin1; - DES_encrypt1((DES_LONG *)tin,_schedule,DES_ENCRYPT); - tout0=tin[0]; l2c(tout0,out); - tout1=tin[1]; l2c(tout1,out); - } + if (enc) { + c2l(iv, tout0); + c2l(iv, tout1); + for (l -= 8; l >= 0; l -= 8) { + c2l(in, tin0); + c2l(in, tin1); + tin0 ^= tout0; + tin[0] = tin0; + tin1 ^= tout1; + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, _schedule, DES_ENCRYPT); + tout0 = tin[0]; + l2c(tout0, out); + tout1 = tin[1]; + l2c(tout1, out); + } + if (l != -8) { + c2ln(in, tin0, tin1, l + 8); + tin0 ^= tout0; + tin[0] = tin0; + tin1 ^= tout1; + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, _schedule, DES_ENCRYPT); + tout0 = tin[0]; + l2c(tout0, out); + tout1 = tin[1]; + l2c(tout1, out); + } #ifndef CBC_ENC_C__DONT_UPDATE_IV - iv = &(*ivec)[0]; - l2c(tout0,iv); - l2c(tout1,iv); + iv = &(*ivec)[0]; + l2c(tout0, iv); + l2c(tout1, iv); #endif - } - else - { - c2l(iv,xor0); - c2l(iv,xor1); - for (l-=8; l>=0; l-=8) - { - c2l(in,tin0); tin[0]=tin0; - c2l(in,tin1); tin[1]=tin1; - DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2c(tout0,out); - l2c(tout1,out); - xor0=tin0; - xor1=tin1; - } - if (l != -8) - { - c2l(in,tin0); tin[0]=tin0; - c2l(in,tin1); tin[1]=tin1; - DES_encrypt1((DES_LONG *)tin,_schedule,DES_DECRYPT); - tout0=tin[0]^xor0; - tout1=tin[1]^xor1; - l2cn(tout0,tout1,out,l+8); + } else { + c2l(iv, xor0); + c2l(iv, xor1); + for (l -= 8; l >= 0; l -= 8) { + c2l(in, tin0); + tin[0] = tin0; + c2l(in, tin1); + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, _schedule, DES_DECRYPT); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2c(tout0, out); + l2c(tout1, out); + xor0 = tin0; + xor1 = tin1; + } + if (l != -8) { + c2l(in, tin0); + tin[0] = tin0; + c2l(in, tin1); + tin[1] = tin1; + DES_encrypt1((DES_LONG *)tin, _schedule, DES_DECRYPT); + tout0 = tin[0] ^ xor0; + tout1 = tin[1] ^ xor1; + l2cn(tout0, tout1, out, l + 8); #ifndef CBC_ENC_C__DONT_UPDATE_IV - xor0=tin0; - xor1=tin1; + xor0 = tin0; + xor1 = tin1; #endif - } -#ifndef CBC_ENC_C__DONT_UPDATE_IV - iv = &(*ivec)[0]; - l2c(xor0,iv); - l2c(xor1,iv); + } +#ifndef CBC_ENC_C__DONT_UPDATE_IV + iv = &(*ivec)[0]; + l2c(xor0, iv); + l2c(xor1, iv); #endif - } - tin0=tin1=tout0=tout1=xor0=xor1=0; - tin[0]=tin[1]=0; - } + } + tin0 = tin1 = tout0 = tout1 = xor0 = xor1 = 0; + tin[0] = tin[1] = 0; +} |