From 4f5482b113907d8cf3b39532a61daf2b4653574c Mon Sep 17 00:00:00 2001
From: lloyd <lloyd@randombit.net>
Date: Mon, 29 Sep 2008 20:41:56 +0000
Subject: Derive x86, x86-64, and SSE2 implementations of SHA-1 directly from
 SHA_160

---
 src/hash/sha1/sha160.cpp           | 12 +++++++++++-
 src/hash/sha1/sha160.h             |  5 ++++-
 src/hash/sha1_amd64/info.txt       |  2 +-
 src/hash/sha1_amd64/sha1_amd64.cpp | 24 ------------------------
 src/hash/sha1_amd64/sha1_amd64.h   | 12 ++----------
 src/hash/sha1_ia32/info.txt        |  2 +-
 src/hash/sha1_ia32/sha1_ia32.cpp   | 23 -----------------------
 src/hash/sha1_ia32/sha1_ia32.h     | 15 ++++-----------
 src/hash/sha1_sse2/info.txt        |  2 +-
 src/hash/sha1_sse2/sha1_sse2.cpp   | 24 ------------------------
 src/hash/sha1_sse2/sha1_sse2.h     | 12 +++---------
 11 files changed, 27 insertions(+), 106 deletions(-)

(limited to 'src/hash')

diff --git a/src/hash/sha1/sha160.cpp b/src/hash/sha1/sha160.cpp
index baafec1db..142cddcd3 100644
--- a/src/hash/sha1/sha160.cpp
+++ b/src/hash/sha1/sha160.cpp
@@ -135,7 +135,17 @@ void SHA_160::clear() throw()
 /*************************************************
 * SHA_160 Constructor                            *
 *************************************************/
-SHA_160::SHA_160() : MDx_HashFunction(20, 64, true, true), W(80)
+SHA_160::SHA_160() :
+   MDx_HashFunction(20, 64, true, true), W(80)
+   {
+   clear();
+   }
+
+/*************************************************
+* SHA_160 Constructor                            *
+*************************************************/
+SHA_160::SHA_160(u32bit W_size) :
+   MDx_HashFunction(20, 64, true, true), W(W_size)
    {
    clear();
    }
diff --git a/src/hash/sha1/sha160.h b/src/hash/sha1/sha160.h
index 022ab9514..021dc95ec 100644
--- a/src/hash/sha1/sha160.h
+++ b/src/hash/sha1/sha160.h
@@ -20,7 +20,10 @@ class BOTAN_DLL SHA_160 : public MDx_HashFunction
       std::string name() const { return "SHA-160"; }
       HashFunction* clone() const { return new SHA_160; }
       SHA_160();
-   private:
+
+   protected:
+      SHA_160(u32bit W_size);
+
       void hash(const byte[]);
       void copy_out(byte[]);
 
diff --git a/src/hash/sha1_amd64/info.txt b/src/hash/sha1_amd64/info.txt
index 400752b28..db6f12868 100644
--- a/src/hash/sha1_amd64/info.txt
+++ b/src/hash/sha1_amd64/info.txt
@@ -10,7 +10,7 @@ sha1_amd64.h
 
 <requires>
 asm_amd64
-mdx_hash
+sha1
 utils
 </requires>
 
diff --git a/src/hash/sha1_amd64/sha1_amd64.cpp b/src/hash/sha1_amd64/sha1_amd64.cpp
index 1c780a9c1..703fd6f2d 100644
--- a/src/hash/sha1_amd64/sha1_amd64.cpp
+++ b/src/hash/sha1_amd64/sha1_amd64.cpp
@@ -4,7 +4,6 @@
 *************************************************/
 
 #include <botan/sha1_amd64.h>
-#include <botan/loadstor.h>
 
 namespace Botan {
 
@@ -23,27 +22,4 @@ void SHA_160_AMD64::hash(const byte input[])
    botan_sha160_amd64_compress(digest, input, W);
    }
 
-/*************************************************
-* Copy out the digest                            *
-*************************************************/
-void SHA_160_AMD64::copy_out(byte output[])
-   {
-   for(u32bit j = 0; j != OUTPUT_LENGTH; ++j)
-      output[j] = get_byte(j % 4, digest[j/4]);
-   }
-
-/*************************************************
-* Clear memory of sensitive data                 *
-*************************************************/
-void SHA_160_AMD64::clear() throw()
-   {
-   MDx_HashFunction::clear();
-   W.clear();
-   digest[0] = 0x67452301;
-   digest[1] = 0xEFCDAB89;
-   digest[2] = 0x98BADCFE;
-   digest[3] = 0x10325476;
-   digest[4] = 0xC3D2E1F0;
-   }
-
 }
diff --git a/src/hash/sha1_amd64/sha1_amd64.h b/src/hash/sha1_amd64/sha1_amd64.h
index 91cbc8293..891b3a869 100644
--- a/src/hash/sha1_amd64/sha1_amd64.h
+++ b/src/hash/sha1_amd64/sha1_amd64.h
@@ -6,27 +6,19 @@
 #ifndef BOTAN_SHA_160_AMD64_H__
 #define BOTAN_SHA_160_AMD64_H__
 
-#include <botan/mdx_hash.h>
+#include <botan/sha160.h>
 
 namespace Botan {
 
 /*************************************************
 * SHA-160                                        *
 *************************************************/
-class BOTAN_DLL SHA_160_AMD64 : public MDx_HashFunction
+class BOTAN_DLL SHA_160_AMD64 : public SHA_160
    {
    public:
-      void clear() throw();
-      std::string name() const { return "SHA-160"; }
       HashFunction* clone() const { return new SHA_160_AMD64; }
-
-      SHA_160_AMD64() : MDx_HashFunction(20, 64, true, true) { clear(); }
    private:
       void hash(const byte[]);
-      void copy_out(byte[]);
-
-      SecureBuffer<u32bit, 5> digest;
-      SecureBuffer<u32bit, 80> W;
    };
 
 }
diff --git a/src/hash/sha1_ia32/info.txt b/src/hash/sha1_ia32/info.txt
index ff8b66ddc..45903f2d6 100644
--- a/src/hash/sha1_ia32/info.txt
+++ b/src/hash/sha1_ia32/info.txt
@@ -12,7 +12,7 @@ sha1_ia32.h
 
 <requires>
 asm_ia32
-mdx_hash
+sha1
 utils
 </requires>
 
diff --git a/src/hash/sha1_ia32/sha1_ia32.cpp b/src/hash/sha1_ia32/sha1_ia32.cpp
index 4e24b0793..ff6e67001 100644
--- a/src/hash/sha1_ia32/sha1_ia32.cpp
+++ b/src/hash/sha1_ia32/sha1_ia32.cpp
@@ -23,27 +23,4 @@ void SHA_160_IA32::hash(const byte input[])
    botan_sha160_ia32_compress(digest, input, W);
    }
 
-/*************************************************
-* Copy out the digest                            *
-*************************************************/
-void SHA_160_IA32::copy_out(byte output[])
-   {
-   for(u32bit j = 0; j != OUTPUT_LENGTH; ++j)
-      output[j] = get_byte(j % 4, digest[j/4]);
-   }
-
-/*************************************************
-* Clear memory of sensitive data                 *
-*************************************************/
-void SHA_160_IA32::clear() throw()
-   {
-   MDx_HashFunction::clear();
-   W.clear();
-   digest[0] = 0x67452301;
-   digest[1] = 0xEFCDAB89;
-   digest[2] = 0x98BADCFE;
-   digest[3] = 0x10325476;
-   digest[4] = 0xC3D2E1F0;
-   }
-
 }
diff --git a/src/hash/sha1_ia32/sha1_ia32.h b/src/hash/sha1_ia32/sha1_ia32.h
index ab9dd8ac2..e294cc42c 100644
--- a/src/hash/sha1_ia32/sha1_ia32.h
+++ b/src/hash/sha1_ia32/sha1_ia32.h
@@ -6,29 +6,22 @@
 #ifndef BOTAN_SHA_160_IA32_H__
 #define BOTAN_SHA_160_IA32_H__
 
-#include <botan/mdx_hash.h>
+#include <botan/sha160.h>
 
 namespace Botan {
 
 /*************************************************
 * SHA-160                                        *
 *************************************************/
-class BOTAN_DLL SHA_160_IA32 : public MDx_HashFunction
+class BOTAN_DLL SHA_160_IA32 : public SHA_160
    {
    public:
-      void clear() throw();
-      std::string name() const { return "SHA-160"; }
       HashFunction* clone() const { return new SHA_160_IA32; }
 
-      SHA_160_IA32() : MDx_HashFunction(20, 64, true, true) { clear(); }
+      // Note 81 instead of normal 80: IA-32 asm needs an extra temp
+      SHA_160_IA32() : SHA_160(81) {}
    private:
       void hash(const byte[]);
-      void copy_out(byte[]);
-
-      SecureBuffer<u32bit, 5> digest;
-
-      // Note 81 instead of normal 80: IA-32 asm needs an extra temp
-      SecureBuffer<u32bit, 81> W;
    };
 
 }
diff --git a/src/hash/sha1_sse2/info.txt b/src/hash/sha1_sse2/info.txt
index cf5fb0943..2512e84be 100644
--- a/src/hash/sha1_sse2/info.txt
+++ b/src/hash/sha1_sse2/info.txt
@@ -11,7 +11,7 @@ sha1_sse2.h
 </add>
 
 <requires>
-mdx_hash
+sha1
 utils
 </requires>
 
diff --git a/src/hash/sha1_sse2/sha1_sse2.cpp b/src/hash/sha1_sse2/sha1_sse2.cpp
index df7f2277c..36d266dcf 100644
--- a/src/hash/sha1_sse2/sha1_sse2.cpp
+++ b/src/hash/sha1_sse2/sha1_sse2.cpp
@@ -4,8 +4,6 @@
 *************************************************/
 
 #include <botan/sha1_sse2.h>
-#include <botan/loadstor.h>
-#include <botan/bit_ops.h>
 
 namespace Botan {
 
@@ -19,26 +17,4 @@ void SHA_160_SSE2::hash(const byte input[])
    botan_sha1_sse2_compress(digest, input);
    }
 
-/*************************************************
-* Copy out the digest                            *
-*************************************************/
-void SHA_160_SSE2::copy_out(byte output[])
-   {
-   for(u32bit j = 0; j != OUTPUT_LENGTH; ++j)
-      output[j] = get_byte(j % 4, digest[j/4]);
-   }
-
-/*************************************************
-* Clear memory of sensitive data                 *
-*************************************************/
-void SHA_160_SSE2::clear() throw()
-   {
-   MDx_HashFunction::clear();
-   digest[0] = 0x67452301;
-   digest[1] = 0xEFCDAB89;
-   digest[2] = 0x98BADCFE;
-   digest[3] = 0x10325476;
-   digest[4] = 0xC3D2E1F0;
-   }
-
 }
diff --git a/src/hash/sha1_sse2/sha1_sse2.h b/src/hash/sha1_sse2/sha1_sse2.h
index 5683acc4f..ecb8fc95d 100644
--- a/src/hash/sha1_sse2/sha1_sse2.h
+++ b/src/hash/sha1_sse2/sha1_sse2.h
@@ -6,26 +6,20 @@
 #ifndef BOTAN_SHA_160_SSE2_H__
 #define BOTAN_SHA_160_SSE2_H__
 
-#include <botan/mdx_hash.h>
+#include <botan/sha160.h>
 
 namespace Botan {
 
 /*************************************************
 * SHA-160                                        *
 *************************************************/
-class SHA_160_SSE2 : public MDx_HashFunction
+class SHA_160_SSE2 : public SHA_160
    {
    public:
-      void clear() throw();
-      std::string name() const { return "SHA-160"; }
       HashFunction* clone() const { return new SHA_160_SSE2; }
-
-      SHA_160_SSE2() : MDx_HashFunction(20, 64, true, true) { clear(); }
+      SHA_160_SSE2() : SHA_160(0) {} // no W needed
    private:
       void hash(const byte[]);
-      void copy_out(byte[]);
-
-      SecureBuffer<u32bit, 5> digest;
    };
 
 }
-- 
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