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-rw-r--r--c/sha3.c53
1 files changed, 31 insertions, 22 deletions
diff --git a/c/sha3.c b/c/sha3.c
index 87c168e..9ba3fb2 100644
--- a/c/sha3.c
+++ b/c/sha3.c
@@ -33,8 +33,6 @@
#define false 0
-#define min(X, Y) ((X) < (Y) ? (X) : (Y))
-
/**
* Round contants
@@ -120,6 +118,18 @@ static long mptr = 0;
static long mlen = 0;
+
+/**
+ * Gets the smallest, in value, of the arguments
+ *
+ * @param X The first candidate
+ * @param Y The second candidate
+ * @return The lowest candidate
+ */
+#define min(X, Y) ((X) < (Y) ? (X) : (Y))
+
+
+
/**
* Copy an array segment into an array in start to end order
*
@@ -189,6 +199,7 @@ inline void arraycopy(byte* src, long soff, byte* dest, long doff, long length)
#undef __
}
+
/**
* Copy an array segment into an array in end to start order
*
@@ -206,24 +217,25 @@ inline void revarraycopy(byte* src, long soff, byte* dest, long doff, long lengt
}
+
/**
* Rotate a word
*
- * @param X:long The value to rotate
- * @param N:long Rotation steps, may not be 0
- * @return :long The value rotated
+ * @param X:llong The value to rotate
+ * @param N:long Rotation steps, may not be 0
+ * @return :llong The value rotated
*/
-#define rotate(X, N) (((X >> (w - (N % w))) + (X << (N % w))) & wmod)
+#define rotate(X, N) ((((X) >> (w - ((N) % w))) + ((X) << ((N) % w))) & wmod)
/**
* Rotate a 64-bit word
*
- * @param X:long The value to rotate
- * @param N:long Rotation steps, may not be 0
- * @return :long The value rotated
+ * @param X:llong The value to rotate
+ * @param N:long Rotation steps, may not be 0
+ * @return :llong The value rotated
*/
-#define rotate64(X, N) ((llong)((unsigned llong)X >> (64 - N)) + (X << N))
+#define rotate64(X, N) ((llong)((unsigned llong)(X) >> (64 - (N))) + ((X) << (N)))
/**
@@ -237,7 +249,7 @@ inline void revarraycopy(byte* src, long soff, byte* dest, long doff, long lengt
/**
* Perform one round of computation
-*
+ *
* @param A The current state
* @param rc Round constant
*/
@@ -284,12 +296,12 @@ static void keccakFRound(llong* A, llong rc)
}
/* ξ step */
- #define __A(X, X5, X10) A[X] = B[X] ^ ((~(B[X5])) & B[X10])
- __A( 0, 5, 0); __A( 1, 6, 1); __A( 2, 7, 2); __A( 3, 8, 3); __A( 4, 9, 4);
- __A( 5, 10, 5); __A( 6, 11, 6); __A( 7, 12, 7); __A( 8, 13, 8); __A( 9, 14, 9);
- __A(10, 15, 10); __A(11, 16, 11); __A(12, 17, 12); __A(13, 18, 13); __A(14, 19, 14);
- __A(15, 20, 15); __A(16, 21, 16); __A(17, 22, 17); __A(18, 23, 18); __A(19, 24, 19);
- __A(20, 0, 20); __A(21, 1, 21); __A(22, 2, 22); __A(23, 3, 23); __A(24, 4, 24);
+ #define __A(X, X5, X10) A[X] = B[X] ^ ((~(B[X5])) & B[X10])
+ __A( 0, 5, 10); __A( 1, 6, 11); __A( 2, 7, 12); __A( 3, 8, 13); __A( 4, 9, 14);
+ __A( 5, 10, 15); __A( 6, 11, 16); __A( 7, 12, 17); __A( 8, 13, 18); __A( 9, 14, 19);
+ __A(10, 15, 20); __A(11, 16, 21); __A(12, 17, 22); __A(13, 18, 23); __A(14, 19, 24);
+ __A(15, 20, 0); __A(16, 21, 1); __A(17, 22, 2); __A(18, 23, 3); __A(19, 24, 4);
+ __A(20, 0, 5); __A(21, 1, 6); __A(22, 2, 7); __A(23, 3, 8); __A(24, 4, 9);
#undef __A
/* ι step */
@@ -377,7 +389,7 @@ inline llong toLane64(byte* message, long msglen, long rr, long off)
((off + 3 < n) ? ((llong)(message[off + 3]) << 24) : 0L) |
((off + 2 < n) ? ((llong)(message[off + 2]) << 16) : 0L) |
((off + 1 < n) ? ((llong)(message[off + 1]) << 8) : 0L) |
- ((off < n) ? ((llong)(message[off])) : 0L);
+ ((off < n) ? ((llong)(message[off ]) ) : 0L);
}
@@ -661,10 +673,7 @@ extern byte* digest(byte* msg, long msglen)
for (_ = 0; _ < ww; _++)
{
if (j < nn)
- {
- rc[ptr] = (byte)v;
- ptr += 1;
- }
+ rc[ptr++] = (byte)v;
v >>= 8;
j += 1;
}