CryptoPP:

changed folder structure

git-svn-id: http://svn.miranda-ng.org/main/trunk@1083 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

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diff --git a/plugins/CryptoPP/crypto/src/des.cpp b/plugins/CryptoPP/crypto/src/des.cpp
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+++ b/plugins/CryptoPP/crypto/src/des.cpp
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+// des.cpp - modified by Wei Dai from Phil Karn's des.c

+// The original code and all modifications are in the public domain.

+

+/*

+ * This is a major rewrite of my old public domain DES code written

+ * circa 1987, which in turn borrowed heavily from Jim Gillogly's 1977

+ * public domain code. I pretty much kept my key scheduling code, but

+ * the actual encrypt/decrypt routines are taken from from Richard

+ * Outerbridge's DES code as printed in Schneier's "Applied Cryptography."

+ *

+ * This code is in the public domain. I would appreciate bug reports and

+ * enhancements.

+ *

+ * Phil Karn KA9Q, karn@unix.ka9q.ampr.org, August 1994.

+ */

+

+#include "pch.h"

+#include "misc.h"

+#include "des.h"

+

+NAMESPACE_BEGIN(CryptoPP)

+

+typedef BlockGetAndPut<word32, BigEndian> Block;

+

+// Richard Outerbridge's initial permutation algorithm

+/*

+inline void IPERM(word32 &left, word32 &right)

+{

+	word32 work;

+

+	work = ((left >> 4) ^ right) & 0x0f0f0f0f;

+	right ^= work;

+	left ^= work << 4;

+	work = ((left >> 16) ^ right) & 0xffff;

+	right ^= work;

+	left ^= work << 16;

+	work = ((right >> 2) ^ left) & 0x33333333;

+	left ^= work;

+	right ^= (work << 2);

+	work = ((right >> 8) ^ left) & 0xff00ff;

+	left ^= work;

+	right ^= (work << 8);

+	right = rotl(right, 1);

+	work = (left ^ right) & 0xaaaaaaaa;

+	left ^= work;

+	right ^= work;

+	left = rotl(left, 1);

+}

+inline void FPERM(word32 &left, word32 &right)

+{

+	word32 work;

+

+	right = rotr(right, 1);

+	work = (left ^ right) & 0xaaaaaaaa;

+	left ^= work;

+	right ^= work;

+	left = rotr(left, 1);

+	work = ((left >> 8) ^ right) & 0xff00ff;

+	right ^= work;

+	left ^= work << 8;

+	work = ((left >> 2) ^ right) & 0x33333333;

+	right ^= work;

+	left ^= work << 2;

+	work = ((right >> 16) ^ left) & 0xffff;

+	left ^= work;

+	right ^= work << 16;

+	work = ((right >> 4) ^ left) & 0x0f0f0f0f;

+	left ^= work;

+	right ^= work << 4;

+}

+*/

+

+// Wei Dai's modification to Richard Outerbridge's initial permutation 

+// algorithm, this one is faster if you have access to rotate instructions 

+// (like in MSVC)

+static inline void IPERM(word32 &left, word32 &right)

+{

+	word32 work;

+

+	right = rotlFixed(right, 4U);

+	work = (left ^ right) & 0xf0f0f0f0;

+	left ^= work;

+	right = rotrFixed(right^work, 20U);

+	work = (left ^ right) & 0xffff0000;

+	left ^= work;

+	right = rotrFixed(right^work, 18U);

+	work = (left ^ right) & 0x33333333;

+	left ^= work;

+	right = rotrFixed(right^work, 6U);

+	work = (left ^ right) & 0x00ff00ff;

+	left ^= work;

+	right = rotlFixed(right^work, 9U);

+	work = (left ^ right) & 0xaaaaaaaa;

+	left = rotlFixed(left^work, 1U);

+	right ^= work;

+}

+

+static inline void FPERM(word32 &left, word32 &right)

+{

+	word32 work;

+

+	right = rotrFixed(right, 1U);

+	work = (left ^ right) & 0xaaaaaaaa;

+	right ^= work;

+	left = rotrFixed(left^work, 9U);

+	work = (left ^ right) & 0x00ff00ff;

+	right ^= work;

+	left = rotlFixed(left^work, 6U);

+	work = (left ^ right) & 0x33333333;

+	right ^= work;

+	left = rotlFixed(left^work, 18U);

+	work = (left ^ right) & 0xffff0000;

+	right ^= work;

+	left = rotlFixed(left^work, 20U);

+	work = (left ^ right) & 0xf0f0f0f0;

+	right ^= work;

+	left = rotrFixed(left^work, 4U);

+}

+

+void DES::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)

+{

+	AssertValidKeyLength(length);

+

+	RawSetKey(GetCipherDirection(), userKey);

+}

+

+#ifndef CRYPTOPP_IMPORTS

+

+/* Tables defined in the Data Encryption Standard documents

+ * Three of these tables, the initial permutation, the final

+ * permutation and the expansion operator, are regular enough that

+ * for speed, we hard-code them. They're here for reference only.

+ * Also, the S and P boxes are used by a separate program, gensp.c,

+ * to build the combined SP box, Spbox[]. They're also here just

+ * for reference.

+ */

+#ifdef notdef

+/* initial permutation IP */

+static byte ip[] = {

+	   58, 50, 42, 34, 26, 18, 10,  2,

+	   60, 52, 44, 36, 28, 20, 12,  4,

+	   62, 54, 46, 38, 30, 22, 14,  6,

+	   64, 56, 48, 40, 32, 24, 16,  8,

+	   57, 49, 41, 33, 25, 17,  9,  1,

+	   59, 51, 43, 35, 27, 19, 11,  3,

+	   61, 53, 45, 37, 29, 21, 13,  5,

+	   63, 55, 47, 39, 31, 23, 15,  7

+};

+

+/* final permutation IP^-1 */

+static byte fp[] = {

+	   40,  8, 48, 16, 56, 24, 64, 32,

+	   39,  7, 47, 15, 55, 23, 63, 31,

+	   38,  6, 46, 14, 54, 22, 62, 30,

+	   37,  5, 45, 13, 53, 21, 61, 29,

+	   36,  4, 44, 12, 52, 20, 60, 28,

+	   35,  3, 43, 11, 51, 19, 59, 27,

+	   34,  2, 42, 10, 50, 18, 58, 26,

+	   33,  1, 41,  9, 49, 17, 57, 25

+};

+/* expansion operation matrix */

+static byte ei[] = {

+	   32,  1,  2,  3,  4,  5,

+		4,  5,  6,  7,  8,  9,

+		8,  9, 10, 11, 12, 13,

+	   12, 13, 14, 15, 16, 17,

+	   16, 17, 18, 19, 20, 21,

+	   20, 21, 22, 23, 24, 25,

+	   24, 25, 26, 27, 28, 29,

+	   28, 29, 30, 31, 32,  1

+};

+/* The (in)famous S-boxes */

+static byte sbox[8][64] = {

+	   /* S1 */

+	   14,  4, 13,  1,  2, 15, 11,  8,  3, 10,  6, 12,  5,  9,  0,  7,

+		0, 15,  7,  4, 14,  2, 13,  1, 10,  6, 12, 11,  9,  5,  3,  8,

+		4,  1, 14,  8, 13,  6,  2, 11, 15, 12,  9,  7,  3, 10,  5,  0,

+	   15, 12,  8,  2,  4,  9,  1,  7,  5, 11,  3, 14, 10,  0,  6, 13,

+

+	   /* S2 */

+	   15,  1,  8, 14,  6, 11,  3,  4,  9,  7,  2, 13, 12,  0,  5, 10,

+		3, 13,  4,  7, 15,  2,  8, 14, 12,  0,  1, 10,  6,  9, 11,  5,

+		0, 14,  7, 11, 10,  4, 13,  1,  5,  8, 12,  6,  9,  3,  2, 15,

+	   13,  8, 10,  1,  3, 15,  4,  2, 11,  6,  7, 12,  0,  5, 14,  9,

+

+	   /* S3 */

+	   10,  0,  9, 14,  6,  3, 15,  5,  1, 13, 12,  7, 11,  4,  2,  8,

+	   13,  7,  0,  9,  3,  4,  6, 10,  2,  8,  5, 14, 12, 11, 15,  1,

+	   13,  6,  4,  9,  8, 15,  3,  0, 11,  1,  2, 12,  5, 10, 14,  7,

+		1, 10, 13,  0,  6,  9,  8,  7,  4, 15, 14,  3, 11,  5,  2, 12,

+

+	   /* S4 */

+		7, 13, 14,  3,  0,  6,  9, 10,  1,  2,  8,  5, 11, 12,  4, 15,

+	   13,  8, 11,  5,  6, 15,  0,  3,  4,  7,  2, 12,  1, 10, 14,  9,

+	   10,  6,  9,  0, 12, 11,  7, 13, 15,  1,  3, 14,  5,  2,  8,  4,

+		3, 15,  0,  6, 10,  1, 13,  8,  9,  4,  5, 11, 12,  7,  2, 14,

+

+	   /* S5 */

+		2, 12,  4,  1,  7, 10, 11,  6,  8,  5,  3, 15, 13,  0, 14,  9,

+	   14, 11,  2, 12,  4,  7, 13,  1,  5,  0, 15, 10,  3,  9,  8,  6,

+		4,  2,  1, 11, 10, 13,  7,  8, 15,  9, 12,  5,  6,  3,  0, 14,

+	   11,  8, 12,  7,  1, 14,  2, 13,  6, 15,  0,  9, 10,  4,  5,  3,

+

+	   /* S6 */

+	   12,  1, 10, 15,  9,  2,  6,  8,  0, 13,  3,  4, 14,  7,  5, 11,

+	   10, 15,  4,  2,  7, 12,  9,  5,  6,  1, 13, 14,  0, 11,  3,  8,

+		9, 14, 15,  5,  2,  8, 12,  3,  7,  0,  4, 10,  1, 13, 11,  6,

+		4,  3,  2, 12,  9,  5, 15, 10, 11, 14,  1,  7,  6,  0,  8, 13,

+

+	   /* S7 */

+		4, 11,  2, 14, 15,  0,  8, 13,  3, 12,  9,  7,  5, 10,  6,  1,

+	   13,  0, 11,  7,  4,  9,  1, 10, 14,  3,  5, 12,  2, 15,  8,  6,

+		1,  4, 11, 13, 12,  3,  7, 14, 10, 15,  6,  8,  0,  5,  9,  2,

+		6, 11, 13,  8,  1,  4, 10,  7,  9,  5,  0, 15, 14,  2,  3, 12,

+

+	   /* S8 */

+	   13,  2,  8,  4,  6, 15, 11,  1, 10,  9,  3, 14,  5,  0, 12,  7,

+		1, 15, 13,  8, 10,  3,  7,  4, 12,  5,  6, 11,  0, 14,  9,  2,

+		7, 11,  4,  1,  9, 12, 14,  2,  0,  6, 10, 13, 15,  3,  5,  8,

+		2,  1, 14,  7,  4, 10,  8, 13, 15, 12,  9,  0,  3,  5,  6, 11

+};

+

+/* 32-bit permutation function P used on the output of the S-boxes */

+static byte p32i[] = {

+	   16,  7, 20, 21,

+	   29, 12, 28, 17,

+		1, 15, 23, 26,

+		5, 18, 31, 10,

+		2,  8, 24, 14,

+	   32, 27,  3,  9,

+	   19, 13, 30,  6,

+	   22, 11,  4, 25

+};

+#endif

+

+/* permuted choice table (key) */

+static const byte pc1[] = {

+	   57, 49, 41, 33, 25, 17,  9,

+		1, 58, 50, 42, 34, 26, 18,

+	   10,  2, 59, 51, 43, 35, 27,

+	   19, 11,  3, 60, 52, 44, 36,

+

+	   63, 55, 47, 39, 31, 23, 15,

+		7, 62, 54, 46, 38, 30, 22,

+	   14,  6, 61, 53, 45, 37, 29,

+	   21, 13,  5, 28, 20, 12,  4

+};

+

+/* number left rotations of pc1 */

+static const byte totrot[] = {

+	   1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28

+};

+

+/* permuted choice key (table) */

+static const byte pc2[] = {

+	   14, 17, 11, 24,  1,  5,

+		3, 28, 15,  6, 21, 10,

+	   23, 19, 12,  4, 26,  8,

+	   16,  7, 27, 20, 13,  2,

+	   41, 52, 31, 37, 47, 55,

+	   30, 40, 51, 45, 33, 48,

+	   44, 49, 39, 56, 34, 53,

+	   46, 42, 50, 36, 29, 32

+};

+

+/* End of DES-defined tables */

+

+/* bit 0 is left-most in byte */

+static const int bytebit[] = {

+	   0200,0100,040,020,010,04,02,01

+};

+

+/* Set key (initialize key schedule array) */

+void RawDES::RawSetKey(CipherDir dir, const byte *key)

+{

+	SecByteBlock buffer(56+56+8);

+	byte *const pc1m=buffer;                 /* place to modify pc1 into */

+	byte *const pcr=pc1m+56;                 /* place to rotate pc1 into */

+	byte *const ks=pcr+56;

+	register int i,j,l;

+	int m;

+	

+	for (j=0; j<56; j++) {          /* convert pc1 to bits of key */

+		l=pc1[j]-1;             /* integer bit location  */

+		m = l & 07;             /* find bit              */

+		pc1m[j]=(key[l>>3] &    /* find which key byte l is in */

+			bytebit[m])     /* and which bit of that byte */

+			? 1 : 0;        /* and store 1-bit result */

+	}

+	for (i=0; i<16; i++) {          /* key chunk for each iteration */

+		memset(ks,0,8);         /* Clear key schedule */

+		for (j=0; j<56; j++)    /* rotate pc1 the right amount */

+			pcr[j] = pc1m[(l=j+totrot[i])<(j<28? 28 : 56) ? l: l-28];

+		/* rotate left and right halves independently */

+		for (j=0; j<48; j++) {   /* select bits individually */

+			/* check bit that goes to ks[j] */

+			if (pcr[pc2[j]-1]) {

+				/* mask it in if it's there */

+				l= j % 6;

+				ks[j/6] |= bytebit[l] >> 2;

+			}

+		}

+		/* Now convert to odd/even interleaved form for use in F */

+		k[2*i] = ((word32)ks[0] << 24)

+			| ((word32)ks[2] << 16)

+			| ((word32)ks[4] << 8)

+			| ((word32)ks[6]);

+		k[2*i+1] = ((word32)ks[1] << 24)

+			| ((word32)ks[3] << 16)

+			| ((word32)ks[5] << 8)

+			| ((word32)ks[7]);

+	}

+	

+	if (dir==DECRYPTION)     // reverse key schedule order

+		for (i=0; i<16; i+=2)

+		{

+			std::swap(k[i], k[32-2-i]);

+			std::swap(k[i+1], k[32-1-i]);

+		}

+}

+

+void RawDES::RawProcessBlock(word32 &l_, word32 &r_) const

+{

+	word32 l = l_, r = r_;

+	const word32 *kptr=k;

+

+	for (unsigned i=0; i<8; i++)

+	{

+		word32 work = rotrFixed(r, 4U) ^ kptr[4*i+0];

+		l ^= Spbox[6][(work) & 0x3f]

+		  ^  Spbox[4][(work >> 8) & 0x3f]

+		  ^  Spbox[2][(work >> 16) & 0x3f]

+		  ^  Spbox[0][(work >> 24) & 0x3f];

+		work = r ^ kptr[4*i+1];

+		l ^= Spbox[7][(work) & 0x3f]

+		  ^  Spbox[5][(work >> 8) & 0x3f]

+		  ^  Spbox[3][(work >> 16) & 0x3f]

+		  ^  Spbox[1][(work >> 24) & 0x3f];

+

+		work = rotrFixed(l, 4U) ^ kptr[4*i+2];

+		r ^= Spbox[6][(work) & 0x3f]

+		  ^  Spbox[4][(work >> 8) & 0x3f]

+		  ^  Spbox[2][(work >> 16) & 0x3f]

+		  ^  Spbox[0][(work >> 24) & 0x3f];

+		work = l ^ kptr[4*i+3];

+		r ^= Spbox[7][(work) & 0x3f]

+		  ^  Spbox[5][(work >> 8) & 0x3f]

+		  ^  Spbox[3][(work >> 16) & 0x3f]

+		  ^  Spbox[1][(work >> 24) & 0x3f];

+	}

+

+	l_ = l; r_ = r;

+}

+

+void DES_EDE2::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)

+{

+	AssertValidKeyLength(length);

+

+	m_des1.RawSetKey(GetCipherDirection(), userKey);

+	m_des2.RawSetKey(ReverseCipherDir(GetCipherDirection()), userKey+8);

+}

+

+void DES_EDE2::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const

+{

+	word32 l,r;

+	Block::Get(inBlock)(l)(r);

+	IPERM(l,r);

+	m_des1.RawProcessBlock(l, r);

+	m_des2.RawProcessBlock(r, l);

+	m_des1.RawProcessBlock(l, r);

+	FPERM(l,r);

+	Block::Put(xorBlock, outBlock)(r)(l);

+}

+

+void DES_EDE3::Base::UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &)

+{

+	AssertValidKeyLength(length);

+

+	m_des1.RawSetKey(GetCipherDirection(), userKey + (IsForwardTransformation() ? 0 : 16));

+	m_des2.RawSetKey(ReverseCipherDir(GetCipherDirection()), userKey + 8);

+	m_des3.RawSetKey(GetCipherDirection(), userKey + (IsForwardTransformation() ? 16 : 0));

+}

+

+void DES_EDE3::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const

+{

+	word32 l,r;

+	Block::Get(inBlock)(l)(r);

+	IPERM(l,r);

+	m_des1.RawProcessBlock(l, r);

+	m_des2.RawProcessBlock(r, l);

+	m_des3.RawProcessBlock(l, r);

+	FPERM(l,r);

+	Block::Put(xorBlock, outBlock)(r)(l);

+}

+

+#endif	// #ifndef CRYPTOPP_IMPORTS

+

+static inline bool CheckParity(byte b)

+{

+	unsigned int a = b ^ (b >> 4);

+	return ((a ^ (a>>1) ^ (a>>2) ^ (a>>3)) & 1) == 1;

+}

+

+bool DES::CheckKeyParityBits(const byte *key)

+{

+	for (unsigned int i=0; i<8; i++)

+		if (!CheckParity(key[i]))

+			return false;

+	return true;

+}

+

+void DES::CorrectKeyParityBits(byte *key)

+{

+	for (unsigned int i=0; i<8; i++)

+		if (!CheckParity(key[i]))

+			key[i] ^= 1;

+}

+

+// Encrypt or decrypt a block of data in ECB mode

+void DES::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const

+{

+	word32 l,r;

+	Block::Get(inBlock)(l)(r);

+	IPERM(l,r);

+	RawProcessBlock(l, r);

+	FPERM(l,r);

+	Block::Put(xorBlock, outBlock)(r)(l);

+}

+

+void DES_XEX3::Base::UncheckedSetKey(const byte *key, unsigned int length, const NameValuePairs &)

+{

+	AssertValidKeyLength(length);

+

+	if (!m_des.get())

+		m_des.reset(new DES::Encryption);

+

+	memcpy(m_x1, key + (IsForwardTransformation() ? 0 : 16), BLOCKSIZE);

+	m_des->RawSetKey(GetCipherDirection(), key + 8);

+	memcpy(m_x3, key + (IsForwardTransformation() ? 16 : 0), BLOCKSIZE);

+}

+

+void DES_XEX3::Base::ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const

+{

+	xorbuf(outBlock, inBlock, m_x1, BLOCKSIZE);

+	m_des->ProcessAndXorBlock(outBlock, xorBlock, outBlock);

+	xorbuf(outBlock, m_x3, BLOCKSIZE);

+}

+

+NAMESPACE_END