1 files changed, 144 insertions, 0 deletions
diff --git a/extra/yassl/taocrypt/src/sha.cpp b/extra/yassl/taocrypt/src/sha.cpp
new file mode 100644
index 00000000000..4dfd2c3f3db
--- /dev/null
+++ b/extra/yassl/taocrypt/src/sha.cpp
@@ -0,0 +1,144 @@
+/* sha.cpp                                
+ *
+ * Copyright (C) 2003 Sawtooth Consulting Ltd.
+ *
+ * This file is part of yaSSL.
+ *
+ * yaSSL is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * yaSSL is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+/* based on Wei Dai's sha.cpp from CryptoPP */
+
+#include "runtime.hpp"
+#include <string.h>
+#include "algorithm.hpp"    // mySTL::swap
+#include "sha.hpp"
+
+
+namespace TaoCrypt {
+
+#define blk0(i) (W[i] = (*reinterpret_cast<word32*>(&buffer_[i*4])))
+#define blk1(i) (W[i&15] = \
+                 rotlFixed(W[(i+13)&15]^W[(i+8)&15]^W[(i+2)&15]^W[i&15],1))
+
+#define f1(x,y,z) (z^(x &(y^z)))
+#define f2(x,y,z) (x^y^z)
+#define f3(x,y,z) ((x&y)|(z&(x|y)))
+#define f4(x,y,z) (x^y^z)
+
+// (R0+R1), R2, R3, R4 are the different operations used in SHA1
+#define R0(v,w,x,y,z,i) z+= f1(w,x,y) + blk0(i) + 0x5A827999+ \
+                        rotlFixed(v,5); w = rotlFixed(w,30);
+#define R1(v,w,x,y,z,i) z+= f1(w,x,y) + blk1(i) + 0x5A827999+ \
+                        rotlFixed(v,5); w = rotlFixed(w,30);
+#define R2(v,w,x,y,z,i) z+= f2(w,x,y) + blk1(i) + 0x6ED9EBA1+ \
+                        rotlFixed(v,5); w = rotlFixed(w,30);
+#define R3(v,w,x,y,z,i) z+= f3(w,x,y) + blk1(i) + 0x8F1BBCDC+ \
+                        rotlFixed(v,5); w = rotlFixed(w,30);
+#define R4(v,w,x,y,z,i) z+= f4(w,x,y) + blk1(i) + 0xCA62C1D6+ \
+                        rotlFixed(v,5); w = rotlFixed(w,30);
+
+
+void SHA::Init()
+{
+    digest_[0] = 0x67452301L;
+    digest_[1] = 0xEFCDAB89L;
+    digest_[2] = 0x98BADCFEL;
+    digest_[3] = 0x10325476L;
+    digest_[4] = 0xC3D2E1F0L;
+
+    buffLen_ = 0;
+    length_  = 0;
+}
+
+
+SHA::SHA(const SHA& that) : HASHwithTransform(DIGEST_SIZE / sizeof(word32),
+                                              BLOCK_SIZE) 
+{ 
+    buffLen_ = that.buffLen_;
+    length_  = that.length_;
+
+    memcpy(digest_, that.digest_, DIGEST_SIZE);
+    memcpy(buffer_, that.buffer_, BLOCK_SIZE);
+}
+
+SHA& SHA::operator= (const SHA& that)
+{
+    SHA tmp(that);
+    Swap(tmp);
+
+    return *this;
+}
+
+
+void SHA::Swap(SHA& other)
+{
+    mySTL::swap(buffer_,  other.buffer_);
+    mySTL::swap(buffLen_, other.buffLen_);
+    mySTL::swap(digest_,  other.digest_);
+    mySTL::swap(length_,  other.length_);
+}
+
+
+void SHA::Transform()
+{
+    word32 W[BLOCK_SIZE / sizeof(word32)];
+
+    // Copy context->state[] to working vars 
+    word32 a = digest_[0];
+    word32 b = digest_[1];
+    word32 c = digest_[2];
+    word32 d = digest_[3];
+    word32 e = digest_[4];
+
+    // 4 rounds of 20 operations each. Loop unrolled. 
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+
+    // Add the working vars back into digest state[]
+    digest_[0] += a;
+    digest_[1] += b;
+    digest_[2] += c;
+    digest_[3] += d;
+    digest_[4] += e;
+
+    // Wipe variables
+    a = b = c = d = e = 0;
+    memset(W, 0, sizeof(W));
+
+    buffLen_ = 0;
+    length_ += 512;
+}
+
+
+} // namespace