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-rw-r--r--crypto/rc5/rc5_skey.c103
1 files changed, 50 insertions, 53 deletions
diff --git a/crypto/rc5/rc5_skey.c b/crypto/rc5/rc5_skey.c
index a2e00a41c550..5dd4a5274315 100644
--- a/crypto/rc5/rc5_skey.c
+++ b/crypto/rc5/rc5_skey.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
@@ -60,54 +60,51 @@
#include "rc5_locl.h"
void RC5_32_set_key(RC5_32_KEY *key, int len, const unsigned char *data,
- int rounds)
- {
- RC5_32_INT L[64],l,ll,A,B,*S,k;
- int i,j,m,c,t,ii,jj;
-
- if ( (rounds != RC5_16_ROUNDS) &&
- (rounds != RC5_12_ROUNDS) &&
- (rounds != RC5_8_ROUNDS))
- rounds=RC5_16_ROUNDS;
+ int rounds)
+{
+ RC5_32_INT L[64], l, ll, A, B, *S, k;
+ int i, j, m, c, t, ii, jj;
- key->rounds=rounds;
- S= &(key->data[0]);
- j=0;
- for (i=0; i<=(len-8); i+=8)
- {
- c2l(data,l);
- L[j++]=l;
- c2l(data,l);
- L[j++]=l;
- }
- ii=len-i;
- if (ii)
- {
- k=len&0x07;
- c2ln(data,l,ll,k);
- L[j+0]=l;
- L[j+1]=ll;
- }
+ if ((rounds != RC5_16_ROUNDS) &&
+ (rounds != RC5_12_ROUNDS) && (rounds != RC5_8_ROUNDS))
+ rounds = RC5_16_ROUNDS;
- c=(len+3)/4;
- t=(rounds+1)*2;
- S[0]=RC5_32_P;
- for (i=1; i<t; i++)
- S[i]=(S[i-1]+RC5_32_Q)&RC5_32_MASK;
+ key->rounds = rounds;
+ S = &(key->data[0]);
+ j = 0;
+ for (i = 0; i <= (len - 8); i += 8) {
+ c2l(data, l);
+ L[j++] = l;
+ c2l(data, l);
+ L[j++] = l;
+ }
+ ii = len - i;
+ if (ii) {
+ k = len & 0x07;
+ c2ln(data, l, ll, k);
+ L[j + 0] = l;
+ L[j + 1] = ll;
+ }
- j=(t>c)?t:c;
- j*=3;
- ii=jj=0;
- A=B=0;
- for (i=0; i<j; i++)
- {
- k=(S[ii]+A+B)&RC5_32_MASK;
- A=S[ii]=ROTATE_l32(k,3);
- m=(int)(A+B);
- k=(L[jj]+A+B)&RC5_32_MASK;
- B=L[jj]=ROTATE_l32(k,m);
- if (++ii >= t) ii=0;
- if (++jj >= c) jj=0;
- }
- }
+ c = (len + 3) / 4;
+ t = (rounds + 1) * 2;
+ S[0] = RC5_32_P;
+ for (i = 1; i < t; i++)
+ S[i] = (S[i - 1] + RC5_32_Q) & RC5_32_MASK;
+ j = (t > c) ? t : c;
+ j *= 3;
+ ii = jj = 0;
+ A = B = 0;
+ for (i = 0; i < j; i++) {
+ k = (S[ii] + A + B) & RC5_32_MASK;
+ A = S[ii] = ROTATE_l32(k, 3);
+ m = (int)(A + B);
+ k = (L[jj] + A + B) & RC5_32_MASK;
+ B = L[jj] = ROTATE_l32(k, m);
+ if (++ii >= t)
+ ii = 0;
+ if (++jj >= c)
+ jj = 0;
+ }
+}