--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/source/common/inlines.h Fri Nov 06 13:21:00 2009 +0200
@@ -0,0 +1,272 @@
+/*
+* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+
+/**
+ @file
+ @internalTechnology
+*/
+
+#ifndef __INLINES_H__
+#define __INLINES_H__
+
+#include <e32base.h>
+
+#define assert(x) __ASSERT_DEBUG((x), User::Panic(_L("crypto.dll"), 1))
+
+#if defined(__GCC32__)
+typedef long long Int64;
+typedef unsigned long long Uint64;
+#elif defined(__VC32__)
+typedef __int64 Int64;
+typedef unsigned __int64 Uint64;
+#elif defined(__CW32__)
+#pragma longlong on
+typedef long long Int64;
+typedef unsigned long long Uint64;
+#endif
+
+typedef Uint64 dword;
+typedef TUint word;
+typedef TUint32 word32;
+
+const TUint WORD_SIZE = sizeof(TUint);
+const TUint WORD_BYTES = WORD_SIZE;
+const TUint BYTE_BITS = 8;
+const TUint WORD_BITS = WORD_SIZE*BYTE_BITS;
+
+//These next two versions of GETBYTE compile to LDR's of words and then shifts
+//and ands to get it down to a byte.
+//#define GETBYTE(x, y) (TUint)(((x)>>(8*(y)))&255)
+//#define GETBYTE(x, y) (TUint)TUint8((x)>>(8*(y)))
+
+//This next version gets the best assembler on gcc and armv4 (it uses LDRB
+//rather than shifts and ands
+#define GETBYTE(x, y) (((TUint8 *)&(x))[y])
+
+#define MAKE_DWORD(lowWord, highWord) ((dword(highWord)<<WORD_BITS) | (lowWord))
+#define LOW_WORD(x) (TUint32)(x)
+#define HIGH_WORD(x) (TUint32)((x)>>WORD_BITS)
+
+template <class T> inline void TClassSwap(T& a, T& b)
+ {
+ T temp(a);
+ a = b;
+ b = temp;
+ }
+
+// Returns log2 of aNum where aNum is a power
+// of two
+inline TUint8 CryptoLog2(TUint8 aNum)
+ {
+ switch (aNum)
+ {
+ case 1:
+ return 0;
+ case 1 << 1:
+ return 1;
+ case 1 << 2:
+ return 2;
+ case 1 << 3:
+ return 3;
+ case 1 << 4:
+ return 4;
+ case 1 << 5:
+ return 5;
+ case 1 << 6:
+ return 6;
+ case 1 << 7:
+ return 7;
+ default:
+ ASSERT(EFalse);
+ }
+ return 0;
+ }
+
+inline TUint BitsToBytes(TUint bitCount)
+ {
+ return ((bitCount+7)/(BYTE_BITS));
+ }
+
+inline TUint BytesToWords(TUint byteCount)
+ {
+ return ((byteCount+WORD_SIZE-1)/WORD_SIZE);
+ }
+
+inline TUint BitsToWords(TUint bitCount)
+ {
+ return ((bitCount+WORD_BITS-1)/(WORD_BITS));
+ }
+
+inline TUint WordsToBits(TUint wordCount)
+ {
+ return wordCount * WORD_BITS;
+ }
+
+inline TUint BytesToBits(TUint byteCount)
+ {
+ return byteCount * BYTE_BITS;
+ }
+
+inline TUint WordsToBytes(TUint wordCount)
+ {
+ return wordCount * WORD_BYTES;
+ }
+
+inline void XorWords(TUint32* r, const TUint32* a, TUint n)
+ {
+ assert(((TUint32)r & 3) == 0); // Catch alignment problems
+
+ for (TUint i=0; i<n; i++)
+ r[i] ^= a[i];
+ }
+
+inline void XorBuf(TUint8* buf, const TUint8* mask, TUint count)
+ {
+ if (((TUint)buf | (TUint)mask | count) % WORD_SIZE == 0)
+ {
+ XorWords((TUint32*)buf, (const TUint32*)mask, count/WORD_SIZE);
+ }
+ else
+ {
+ for (TUint i=0; i<count; i++)
+ buf[i] ^= mask[i];
+ }
+ }
+
+// ************** rotate functions ***************
+template <class T> inline T rotlFixed(T x, TUint y)
+ {
+ assert(y < sizeof(T)*8);
+ return ( (T)((x<<y) | (x>>(sizeof(T)*8-y))) );
+ }
+
+template <class T> inline T rotrFixed(T x, TUint y)
+ {
+ assert(y < sizeof(T)*8);
+ return ((T)((x>>y) | (x<<(sizeof(T)*8-y))));
+ }
+
+inline TUint32 byteReverse(TUint32 value)
+ {
+ value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
+ return rotlFixed(value, 16U);
+ }
+
+template <class T>
+void byteReverse(T* out, const T* in, TUint32 byteCount)
+ {
+ TUint count = (byteCount+sizeof(T)-1)/sizeof(T);
+ for (TUint i=0; i<count; i++)
+ out[i] = byteReverse(in[i]);
+ }
+
+template <class T>
+inline void GetUserKeyLittleEndian(T *out, TUint32 outlen, const TUint8* in, TUint32 inlen)
+ {
+ const TUint U = sizeof(T);
+ assert(inlen <= outlen*U);
+ Mem::Copy(out, in, inlen);
+ Mem::FillZ((TUint8*)out+inlen, outlen*U-inlen);
+ }
+
+template <class T>
+inline void GetUserKeyBigEndian(T *out, TUint32 outlen, const TUint8* in, TUint32 inlen)
+ {
+ const TUint U = sizeof(T);
+ assert(inlen <= outlen*U);
+ Mem::Copy(out, in, inlen);
+ Mem::FillZ((TUint8*)out+inlen, outlen*U-inlen);
+ byteReverse(out, out, inlen);
+ }
+
+// The following methods have be changed to use byte rather than word accesses,
+// as if the input pointer is not be word aligned a fault occurs on arm
+// hardware. This isn't optimal from a performance point of view, but it is
+// neccessary because the crypto interfaces (CSymmetricCipher,
+// CBlockTransformation) allow clients to pass non-aligned data.
+
+// Fetch 4 words from user's buffer into "a", "b", "c", "d" in LITTLE-endian order
+inline void GetBlockLittleEndian(const TUint8* block, TUint16 &a, TUint16 &b, TUint16 &c, TUint16 &d)
+ {
+ a = (TUint16)(block[0] | block[1] << 8);
+ b = (TUint16)(block[2] | block[3] << 8);
+ c = (TUint16)(block[4] | block[5] << 8);
+ d = (TUint16)(block[6] | block[7] << 8);
+ }
+
+// Put 4 words back into user's buffer in LITTLE-endian order
+inline void PutBlockLittleEndian(TUint8* block, TUint16 a, TUint16 b, TUint16 c, TUint16 d)
+ {
+ block[0] = (TUint8)(a & 0xff);
+ block[1] = (TUint8)(a >> 8);
+ block[2] = (TUint8)(b & 0xff);
+ block[3] = (TUint8)(b >> 8);
+ block[4] = (TUint8)(c & 0xff);
+ block[5] = (TUint8)(c >> 8);
+ block[6] = (TUint8)(d & 0xff);
+ block[7] = (TUint8)(d >> 8);
+ }
+
+// Fetch 1 word from user's buffer in BIG-endian order
+inline void GetWordBigEndian(const TUint8* block, TUint32 &a)
+ {
+ a = block[0] << 24 | block[1] << 16 | block[2] << 8 | block[3];
+ }
+
+// Put 1 word back into user's buffer in BIG-endian order
+inline void PutWordBigEndian(TUint8* block, TUint32 a)
+ {
+ block[0] = (TUint8)(a >> 24);
+ block[1] = (TUint8)((a >> 16) & 0xff);
+ block[2] = (TUint8)((a >> 8) & 0xff);
+ block[3] = (TUint8)(a & 0xff);
+ }
+
+// Fetch 2 words from user's buffer into "a", "b" in BIG-endian order
+inline void GetBlockBigEndian(const TUint8* block, TUint32 &a, TUint32& b)
+ {
+ GetWordBigEndian(block, a);
+ GetWordBigEndian(block + 4, b);
+ }
+
+// Put 2 words back into user's buffer in BIG-endian order
+inline void PutBlockBigEndian(TUint8* block, TUint32 a, TUint32 b)
+ {
+ PutWordBigEndian(block, a);
+ PutWordBigEndian(block + 4, b);
+ }
+
+// Fetch 4 words from user's buffer into "a", "b", "c", "d" in BIG-endian order
+inline void GetBlockBigEndian(const TUint8* block, TUint32& a, TUint32& b, TUint32& c, TUint32& d)
+ {
+ GetWordBigEndian(block, a);
+ GetWordBigEndian(block + 4, b);
+ GetWordBigEndian(block + 8, c);
+ GetWordBigEndian(block + 12, d);
+ }
+
+// Put 4 words back into user's buffer in BIG-endian order
+inline void PutBlockBigEndian(TUint8* block, TUint32 a, TUint32 b, TUint32 c, TUint32 d)
+ {
+ PutWordBigEndian(block, a);
+ PutWordBigEndian(block + 4, b);
+ PutWordBigEndian(block + 8, c);
+ PutWordBigEndian(block + 12, d);
+ }
+
+#endif // __INLINES_H__