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arc4 warning changes, submitted by Kevin Baca

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This commit is contained in:
Todd A Ouska
2011-07-12 12:39:16 -07:00
parent e8aba51b31
commit 8dddcfac17
1 changed files with 7 additions and 7 deletions
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14
ctaocrypt/src/arc4.c
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@@ -33,14 +33,14 @@ void Arc4SetKey(Arc4* arc4, const byte* key, word32 length)
arc4->y = 0; arc4->y = 0;
for (i = 0; i < ARC4_STATE_SIZE; i++) for (i = 0; i < ARC4_STATE_SIZE; i++)
arc4->state[i] = i; arc4->state[i] = (byte)i;
for (i = 0; i < ARC4_STATE_SIZE; i++) { for (i = 0; i < ARC4_STATE_SIZE; i++) {
word32 a = arc4->state[i]; word32 a = arc4->state[i];
stateIndex += key[keyIndex] + a; stateIndex += key[keyIndex] + a;
stateIndex &= 0xFF; stateIndex &= 0xFF;
arc4->state[i] = arc4->state[stateIndex]; arc4->state[i] = arc4->state[stateIndex];
arc4->state[stateIndex] = a; arc4->state[stateIndex] = (byte)a;
if (++keyIndex >= length) if (++keyIndex >= length)
keyIndex = 0; keyIndex = 0;
@@ -48,14 +48,14 @@ void Arc4SetKey(Arc4* arc4, const byte* key, word32 length)
} }
static INLINE word32 MakeByte(word32* x, word32* y, byte* s) static INLINE byte MakeByte(word32* x, word32* y, byte* s)
{ {
word32 a = s[*x], b; word32 a = s[*x], b;
*y = (*y+a) & 0xff; *y = (*y+a) & 0xff;
b = s[*y]; b = s[*y];
s[*x] = b; s[*x] = (byte)b;
s[*y] = a; s[*y] = (byte)a;
*x = (*x+1) & 0xff; *x = (*x+1) & 0xff;
return s[(a+b) & 0xff]; return s[(a+b) & 0xff];
@@ -70,7 +70,7 @@ void Arc4Process(Arc4* arc4, byte* out, const byte* in, word32 length)
while(length--) while(length--)
*out++ = *in++ ^ MakeByte(&x, &y, arc4->state); *out++ = *in++ ^ MakeByte(&x, &y, arc4->state);
arc4->x = x; arc4->x = (byte)x;
arc4->y = y; arc4->y = (byte)y;
} }