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-rw-r--r--crypto/des/pcbc_enc.c124
1 files changed, 58 insertions, 66 deletions
diff --git a/crypto/des/pcbc_enc.c b/crypto/des/pcbc_enc.c
index 17a40f9520f0..144d5ed88f53 100644
--- a/crypto/des/pcbc_enc.c
+++ b/crypto/des/pcbc_enc.c
@@ -5,21 +5,21 @@
* 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:
@@ -34,10 +34,10 @@
* 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
@@ -49,7 +49,7 @@
* 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
@@ -59,65 +59,57 @@
#include "des_locl.h"
void DES_pcbc_encrypt(const unsigned char *input, unsigned char *output,
- long length, DES_key_schedule *schedule,
- DES_cblock *ivec, int enc)
- {
- register DES_LONG sin0,sin1,xor0,xor1,tout0,tout1;
- DES_LONG tin[2];
- const unsigned char *in;
- unsigned char *out,*iv;
+ long length, DES_key_schedule *schedule,
+ DES_cblock *ivec, int enc)
+{
+ register DES_LONG sin0, sin1, xor0, xor1, tout0, tout1;
+ DES_LONG tin[2];
+ const unsigned char *in;
+ unsigned char *out, *iv;
- in=input;
- out=output;
- iv = &(*ivec)[0];
+ in = input;
+ out = output;
+ iv = &(*ivec)[0];
- if (enc)
- {
- c2l(iv,xor0);
- c2l(iv,xor1);
- for (; length>0; length-=8)
- {
- if (length >= 8)
- {
- c2l(in,sin0);
- c2l(in,sin1);
- }
- else
- c2ln(in,sin0,sin1,length);
- tin[0]=sin0^xor0;
- tin[1]=sin1^xor1;
- DES_encrypt1((DES_LONG *)tin,schedule,DES_ENCRYPT);
- tout0=tin[0];
- tout1=tin[1];
- xor0=sin0^tout0;
- xor1=sin1^tout1;
- l2c(tout0,out);
- l2c(tout1,out);
- }
- }
- else
- {
- c2l(iv,xor0); c2l(iv,xor1);
- for (; length>0; length-=8)
- {
- c2l(in,sin0);
- c2l(in,sin1);
- tin[0]=sin0;
- tin[1]=sin1;
- DES_encrypt1((DES_LONG *)tin,schedule,DES_DECRYPT);
- tout0=tin[0]^xor0;
- tout1=tin[1]^xor1;
- if (length >= 8)
- {
- l2c(tout0,out);
- l2c(tout1,out);
- }
- else
- l2cn(tout0,tout1,out,length);
- xor0=tout0^sin0;
- xor1=tout1^sin1;
- }
- }
- tin[0]=tin[1]=0;
- sin0=sin1=xor0=xor1=tout0=tout1=0;
- }
+ if (enc) {
+ c2l(iv, xor0);
+ c2l(iv, xor1);
+ for (; length > 0; length -= 8) {
+ if (length >= 8) {
+ c2l(in, sin0);
+ c2l(in, sin1);
+ } else
+ c2ln(in, sin0, sin1, length);
+ tin[0] = sin0 ^ xor0;
+ tin[1] = sin1 ^ xor1;
+ DES_encrypt1((DES_LONG *)tin, schedule, DES_ENCRYPT);
+ tout0 = tin[0];
+ tout1 = tin[1];
+ xor0 = sin0 ^ tout0;
+ xor1 = sin1 ^ tout1;
+ l2c(tout0, out);
+ l2c(tout1, out);
+ }
+ } else {
+ c2l(iv, xor0);
+ c2l(iv, xor1);
+ for (; length > 0; length -= 8) {
+ c2l(in, sin0);
+ c2l(in, sin1);
+ tin[0] = sin0;
+ tin[1] = sin1;
+ DES_encrypt1((DES_LONG *)tin, schedule, DES_DECRYPT);
+ tout0 = tin[0] ^ xor0;
+ tout1 = tin[1] ^ xor1;
+ if (length >= 8) {
+ l2c(tout0, out);
+ l2c(tout1, out);
+ } else
+ l2cn(tout0, tout1, out, length);
+ xor0 = tout0 ^ sin0;
+ xor1 = tout1 ^ sin1;
+ }
+ }
+ tin[0] = tin[1] = 0;
+ sin0 = sin1 = xor0 = xor1 = tout0 = tout1 = 0;
+}