First Commit

externals/cryptopp/md4.cpp

@@ -0,0 +1,110 @@
+// md4.cpp - modified by Wei Dai from Andrew M. Kuchling's md4.c
+// The original code and all modifications are in the public domain.
+
+// This is the original introductory comment:
+
+/*
+ *  md4.c : MD4 hash algorithm.
+ *
+ * Part of the Python Cryptography Toolkit, version 1.1
+ *
+ * Distribute and use freely; there are no restrictions on further
+ * dissemination and usage except those imposed by the laws of your
+ * country of residence.
+ *
+ */
+
+#include "pch.h"
+#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1
+#include "md4.h"
+#include "misc.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+namespace Weak1 {
+
+void MD4::InitState(HashWordType *state)
+{
+	state[0] = 0x67452301L;
+	state[1] = 0xefcdab89L;
+	state[2] = 0x98badcfeL;
+	state[3] = 0x10325476L;
+}
+
+void MD4::Transform (word32 *digest, const word32 *in)
+{
+// #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
+#define G(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+
+    word32 A, B, C, D;
+
+	A=digest[0];
+	B=digest[1];
+	C=digest[2];
+	D=digest[3];
+
+#define function(a,b,c,d,k,s) a=rotlVariable(a+F(b,c,d)+in[k],s);
+	  function(A,B,C,D, 0, 3);
+	  function(D,A,B,C, 1, 7);
+	  function(C,D,A,B, 2,11);
+	  function(B,C,D,A, 3,19);
+	  function(A,B,C,D, 4, 3);
+	  function(D,A,B,C, 5, 7);
+	  function(C,D,A,B, 6,11);
+	  function(B,C,D,A, 7,19);
+	  function(A,B,C,D, 8, 3);
+	  function(D,A,B,C, 9, 7);
+	  function(C,D,A,B,10,11);
+	  function(B,C,D,A,11,19);
+	  function(A,B,C,D,12, 3);
+	  function(D,A,B,C,13, 7);
+	  function(C,D,A,B,14,11);
+	  function(B,C,D,A,15,19);
+
+#undef function
+#define function(a,b,c,d,k,s) a=rotlVariable(a+G(b,c,d)+in[k]+0x5a827999,s);
+	  function(A,B,C,D, 0, 3);
+	  function(D,A,B,C, 4, 5);
+	  function(C,D,A,B, 8, 9);
+	  function(B,C,D,A,12,13);
+	  function(A,B,C,D, 1, 3);
+	  function(D,A,B,C, 5, 5);
+	  function(C,D,A,B, 9, 9);
+	  function(B,C,D,A,13,13);
+	  function(A,B,C,D, 2, 3);
+	  function(D,A,B,C, 6, 5);
+	  function(C,D,A,B,10, 9);
+	  function(B,C,D,A,14,13);
+	  function(A,B,C,D, 3, 3);
+	  function(D,A,B,C, 7, 5);
+	  function(C,D,A,B,11, 9);
+	  function(B,C,D,A,15,13);
+
+#undef function
+#define function(a,b,c,d,k,s) a=rotlVariable(a+H(b,c,d)+in[k]+0x6ed9eba1,s);
+	  function(A,B,C,D, 0, 3);
+	  function(D,A,B,C, 8, 9);
+	  function(C,D,A,B, 4,11);
+	  function(B,C,D,A,12,15);
+	  function(A,B,C,D, 2, 3);
+	  function(D,A,B,C,10, 9);
+	  function(C,D,A,B, 6,11);
+	  function(B,C,D,A,14,15);
+	  function(A,B,C,D, 1, 3);
+	  function(D,A,B,C, 9, 9);
+	  function(C,D,A,B, 5,11);
+	  function(B,C,D,A,13,15);
+	  function(A,B,C,D, 3, 3);
+	  function(D,A,B,C,11, 9);
+	  function(C,D,A,B, 7,11);
+	  function(B,C,D,A,15,15);
+
+	digest[0]+=A;
+	digest[1]+=B;
+	digest[2]+=C;
+	digest[3]+=D;
+}
+
+}
+NAMESPACE_END