VeraCrypt
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-rw-r--r--src/Crypto/Serpent.c943
1 files changed, 943 insertions, 0 deletions
diff --git a/src/Crypto/Serpent.c b/src/Crypto/Serpent.c
new file mode 100644
index 0000000..ac77b39
--- /dev/null
+++ b/src/Crypto/Serpent.c
@@ -0,0 +1,943 @@
+// serpent.cpp - written and placed in the public domain by Wei Dai
+
+/* Adapted for TrueCrypt */
+
+#ifdef TC_WINDOWS_BOOT
+#pragma optimize ("t", on)
+#endif
+
+#include "Serpent.h"
+#include "Common/Endian.h"
+
+#include <memory.h>
+
+#if defined(_WIN32) && !defined(_DEBUG)
+#include <stdlib.h>
+#define rotlFixed _rotl
+#define rotrFixed _rotr
+#else
+#define rotlFixed(x,n) (((x) << (n)) | ((x) >> (32 - (n))))
+#define rotrFixed(x,n) (((x) >> (n)) | ((x) << (32 - (n))))
+#endif
+
+// linear transformation
+#define LT(i,a,b,c,d,e) {\
+ a = rotlFixed(a, 13); \
+ c = rotlFixed(c, 3); \
+ d = rotlFixed(d ^ c ^ (a << 3), 7); \
+ b = rotlFixed(b ^ a ^ c, 1); \
+ a = rotlFixed(a ^ b ^ d, 5); \
+ c = rotlFixed(c ^ d ^ (b << 7), 22);}
+
+// inverse linear transformation
+#define ILT(i,a,b,c,d,e) {\
+ c = rotrFixed(c, 22); \
+ a = rotrFixed(a, 5); \
+ c ^= d ^ (b << 7); \
+ a ^= b ^ d; \
+ b = rotrFixed(b, 1); \
+ d = rotrFixed(d, 7) ^ c ^ (a << 3); \
+ b ^= a ^ c; \
+ c = rotrFixed(c, 3); \
+ a = rotrFixed(a, 13);}
+
+// order of output from S-box functions
+#define beforeS0(f) f(0,a,b,c,d,e)
+#define afterS0(f) f(1,b,e,c,a,d)
+#define afterS1(f) f(2,c,b,a,e,d)
+#define afterS2(f) f(3,a,e,b,d,c)
+#define afterS3(f) f(4,e,b,d,c,a)
+#define afterS4(f) f(5,b,a,e,c,d)
+#define afterS5(f) f(6,a,c,b,e,d)
+#define afterS6(f) f(7,a,c,d,b,e)
+#define afterS7(f) f(8,d,e,b,a,c)
+
+// order of output from inverse S-box functions
+#define beforeI7(f) f(8,a,b,c,d,e)
+#define afterI7(f) f(7,d,a,b,e,c)
+#define afterI6(f) f(6,a,b,c,e,d)
+#define afterI5(f) f(5,b,d,e,c,a)
+#define afterI4(f) f(4,b,c,e,a,d)
+#define afterI3(f) f(3,a,b,e,c,d)
+#define afterI2(f) f(2,b,d,e,c,a)
+#define afterI1(f) f(1,a,b,c,e,d)
+#define afterI0(f) f(0,a,d,b,e,c)
+
+// The instruction sequences for the S-box functions
+// come from Dag Arne Osvik's paper "Speeding up Serpent".
+
+#define S0(i, r0, r1, r2, r3, r4) \
+ { \
+ r3 ^= r0; \
+ r4 = r1; \
+ r1 &= r3; \
+ r4 ^= r2; \
+ r1 ^= r0; \
+ r0 |= r3; \
+ r0 ^= r4; \
+ r4 ^= r3; \
+ r3 ^= r2; \
+ r2 |= r1; \
+ r2 ^= r4; \
+ r4 = ~r4; \
+ r4 |= r1; \
+ r1 ^= r3; \
+ r1 ^= r4; \
+ r3 |= r0; \
+ r1 ^= r3; \
+ r4 ^= r3; \
+ }
+
+#define I0(i, r0, r1, r2, r3, r4) \
+ { \
+ r2 = ~r2; \
+ r4 = r1; \
+ r1 |= r0; \
+ r4 = ~r4; \
+ r1 ^= r2; \
+ r2 |= r4; \
+ r1 ^= r3; \
+ r0 ^= r4; \
+ r2 ^= r0; \
+ r0 &= r3; \
+ r4 ^= r0; \
+ r0 |= r1; \
+ r0 ^= r2; \
+ r3 ^= r4; \
+ r2 ^= r1; \
+ r3 ^= r0; \
+ r3 ^= r1; \
+ r2 &= r3; \
+ r4 ^= r2; \
+ }
+
+#define S1(i, r0, r1, r2, r3, r4) \
+ { \
+ r0 = ~r0; \
+ r2 = ~r2; \
+ r4 = r0; \
+ r0 &= r1; \
+ r2 ^= r0; \
+ r0 |= r3; \
+ r3 ^= r2; \
+ r1 ^= r0; \
+ r0 ^= r4; \
+ r4 |= r1; \
+ r1 ^= r3; \
+ r2 |= r0; \
+ r2 &= r4; \
+ r0 ^= r1; \
+ r1 &= r2; \
+ r1 ^= r0; \
+ r0 &= r2; \
+ r0 ^= r4; \
+ }
+
+#define I1(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r1; \
+ r1 ^= r3; \
+ r3 &= r1; \
+ r4 ^= r2; \
+ r3 ^= r0; \
+ r0 |= r1; \
+ r2 ^= r3; \
+ r0 ^= r4; \
+ r0 |= r2; \
+ r1 ^= r3; \
+ r0 ^= r1; \
+ r1 |= r3; \
+ r1 ^= r0; \
+ r4 = ~r4; \
+ r4 ^= r1; \
+ r1 |= r0; \
+ r1 ^= r0; \
+ r1 |= r4; \
+ r3 ^= r1; \
+ }
+
+#define S2(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r0; \
+ r0 &= r2; \
+ r0 ^= r3; \
+ r2 ^= r1; \
+ r2 ^= r0; \
+ r3 |= r4; \
+ r3 ^= r1; \
+ r4 ^= r2; \
+ r1 = r3; \
+ r3 |= r4; \
+ r3 ^= r0; \
+ r0 &= r1; \
+ r4 ^= r0; \
+ r1 ^= r3; \
+ r1 ^= r4; \
+ r4 = ~r4; \
+ }
+
+#define I2(i, r0, r1, r2, r3, r4) \
+ { \
+ r2 ^= r3; \
+ r3 ^= r0; \
+ r4 = r3; \
+ r3 &= r2; \
+ r3 ^= r1; \
+ r1 |= r2; \
+ r1 ^= r4; \
+ r4 &= r3; \
+ r2 ^= r3; \
+ r4 &= r0; \
+ r4 ^= r2; \
+ r2 &= r1; \
+ r2 |= r0; \
+ r3 = ~r3; \
+ r2 ^= r3; \
+ r0 ^= r3; \
+ r0 &= r1; \
+ r3 ^= r4; \
+ r3 ^= r0; \
+ }
+
+#define S3(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r0; \
+ r0 |= r3; \
+ r3 ^= r1; \
+ r1 &= r4; \
+ r4 ^= r2; \
+ r2 ^= r3; \
+ r3 &= r0; \
+ r4 |= r1; \
+ r3 ^= r4; \
+ r0 ^= r1; \
+ r4 &= r0; \
+ r1 ^= r3; \
+ r4 ^= r2; \
+ r1 |= r0; \
+ r1 ^= r2; \
+ r0 ^= r3; \
+ r2 = r1; \
+ r1 |= r3; \
+ r1 ^= r0; \
+ }
+
+#define I3(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r2; \
+ r2 ^= r1; \
+ r1 &= r2; \
+ r1 ^= r0; \
+ r0 &= r4; \
+ r4 ^= r3; \
+ r3 |= r1; \
+ r3 ^= r2; \
+ r0 ^= r4; \
+ r2 ^= r0; \
+ r0 |= r3; \
+ r0 ^= r1; \
+ r4 ^= r2; \
+ r2 &= r3; \
+ r1 |= r3; \
+ r1 ^= r2; \
+ r4 ^= r0; \
+ r2 ^= r4; \
+ }
+
+#define S4(i, r0, r1, r2, r3, r4) \
+ { \
+ r1 ^= r3; \
+ r3 = ~r3; \
+ r2 ^= r3; \
+ r3 ^= r0; \
+ r4 = r1; \
+ r1 &= r3; \
+ r1 ^= r2; \
+ r4 ^= r3; \
+ r0 ^= r4; \
+ r2 &= r4; \
+ r2 ^= r0; \
+ r0 &= r1; \
+ r3 ^= r0; \
+ r4 |= r1; \
+ r4 ^= r0; \
+ r0 |= r3; \
+ r0 ^= r2; \
+ r2 &= r3; \
+ r0 = ~r0; \
+ r4 ^= r2; \
+ }
+
+#define I4(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r2; \
+ r2 &= r3; \
+ r2 ^= r1; \
+ r1 |= r3; \
+ r1 &= r0; \
+ r4 ^= r2; \
+ r4 ^= r1; \
+ r1 &= r2; \
+ r0 = ~r0; \
+ r3 ^= r4; \
+ r1 ^= r3; \
+ r3 &= r0; \
+ r3 ^= r2; \
+ r0 ^= r1; \
+ r2 &= r0; \
+ r3 ^= r0; \
+ r2 ^= r4; \
+ r2 |= r3; \
+ r3 ^= r0; \
+ r2 ^= r1; \
+ }
+
+#define S5(i, r0, r1, r2, r3, r4) \
+ { \
+ r0 ^= r1; \
+ r1 ^= r3; \
+ r3 = ~r3; \
+ r4 = r1; \
+ r1 &= r0; \
+ r2 ^= r3; \
+ r1 ^= r2; \
+ r2 |= r4; \
+ r4 ^= r3; \
+ r3 &= r1; \
+ r3 ^= r0; \
+ r4 ^= r1; \
+ r4 ^= r2; \
+ r2 ^= r0; \
+ r0 &= r3; \
+ r2 = ~r2; \
+ r0 ^= r4; \
+ r4 |= r3; \
+ r2 ^= r4; \
+ }
+
+#define I5(i, r0, r1, r2, r3, r4) \
+ { \
+ r1 = ~r1; \
+ r4 = r3; \
+ r2 ^= r1; \
+ r3 |= r0; \
+ r3 ^= r2; \
+ r2 |= r1; \
+ r2 &= r0; \
+ r4 ^= r3; \
+ r2 ^= r4; \
+ r4 |= r0; \
+ r4 ^= r1; \
+ r1 &= r2; \
+ r1 ^= r3; \
+ r4 ^= r2; \
+ r3 &= r4; \
+ r4 ^= r1; \
+ r3 ^= r0; \
+ r3 ^= r4; \
+ r4 = ~r4; \
+ }
+
+#define S6(i, r0, r1, r2, r3, r4) \
+ { \
+ r2 = ~r2; \
+ r4 = r3; \
+ r3 &= r0; \
+ r0 ^= r4; \
+ r3 ^= r2; \
+ r2 |= r4; \
+ r1 ^= r3; \
+ r2 ^= r0; \
+ r0 |= r1; \
+ r2 ^= r1; \
+ r4 ^= r0; \
+ r0 |= r3; \
+ r0 ^= r2; \
+ r4 ^= r3; \
+ r4 ^= r0; \
+ r3 = ~r3; \
+ r2 &= r4; \
+ r2 ^= r3; \
+ }
+
+#define I6(i, r0, r1, r2, r3, r4) \
+ { \
+ r0 ^= r2; \
+ r4 = r2; \
+ r2 &= r0; \
+ r4 ^= r3; \
+ r2 = ~r2; \
+ r3 ^= r1; \
+ r2 ^= r3; \
+ r4 |= r0; \
+ r0 ^= r2; \
+ r3 ^= r4; \
+ r4 ^= r1; \
+ r1 &= r3; \
+ r1 ^= r0; \
+ r0 ^= r3; \
+ r0 |= r2; \
+ r3 ^= r1; \
+ r4 ^= r0; \
+ }
+
+#define S7(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r2; \
+ r2 &= r1; \
+ r2 ^= r3; \
+ r3 &= r1; \
+ r4 ^= r2; \
+ r2 ^= r1; \
+ r1 ^= r0; \
+ r0 |= r4; \
+ r0 ^= r2; \
+ r3 ^= r1; \
+ r2 ^= r3; \
+ r3 &= r0; \
+ r3 ^= r4; \
+ r4 ^= r2; \
+ r2 &= r0; \
+ r4 = ~r4; \
+ r2 ^= r4; \
+ r4 &= r0; \
+ r1 ^= r3; \
+ r4 ^= r1; \
+ }
+
+#define I7(i, r0, r1, r2, r3, r4) \
+ { \
+ r4 = r2; \
+ r2 ^= r0; \
+ r0 &= r3; \
+ r2 = ~r2; \
+ r4 |= r3; \
+ r3 ^= r1; \
+ r1 |= r0; \
+ r0 ^= r2; \
+ r2 &= r4; \
+ r1 ^= r2; \
+ r2 ^= r0; \
+ r0 |= r2; \
+ r3 &= r4; \
+ r0 ^= r3; \
+ r4 ^= r1; \
+ r3 ^= r4; \
+ r4 |= r0; \
+ r3 ^= r2; \
+ r4 ^= r2; \
+ }
+
+// key xor
+#define KX(r, a, b, c, d, e) {\
+ a ^= k[4 * r + 0]; \
+ b ^= k[4 * r + 1]; \
+ c ^= k[4 * r + 2]; \
+ d ^= k[4 * r + 3];}
+
+
+#ifdef TC_MINIMIZE_CODE_SIZE
+
+static void S0f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r3 ^= *r0;
+ *r4 = *r1;
+ *r1 &= *r3;
+ *r4 ^= *r2;
+ *r1 ^= *r0;
+ *r0 |= *r3;
+ *r0 ^= *r4;
+ *r4 ^= *r3;
+ *r3 ^= *r2;
+ *r2 |= *r1;
+ *r2 ^= *r4;
+ *r4 = ~*r4;
+ *r4 |= *r1;
+ *r1 ^= *r3;
+ *r1 ^= *r4;
+ *r3 |= *r0;
+ *r1 ^= *r3;
+ *r4 ^= *r3;
+}
+
+static void S1f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r0 = ~*r0;
+ *r2 = ~*r2;
+ *r4 = *r0;
+ *r0 &= *r1;
+ *r2 ^= *r0;
+ *r0 |= *r3;
+ *r3 ^= *r2;
+ *r1 ^= *r0;
+ *r0 ^= *r4;
+ *r4 |= *r1;
+ *r1 ^= *r3;
+ *r2 |= *r0;
+ *r2 &= *r4;
+ *r0 ^= *r1;
+ *r1 &= *r2;
+ *r1 ^= *r0;
+ *r0 &= *r2;
+ *r0 ^= *r4;
+}
+
+static void S2f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r4 = *r0;
+ *r0 &= *r2;
+ *r0 ^= *r3;
+ *r2 ^= *r1;
+ *r2 ^= *r0;
+ *r3 |= *r4;
+ *r3 ^= *r1;
+ *r4 ^= *r2;
+ *r1 = *r3;
+ *r3 |= *r4;
+ *r3 ^= *r0;
+ *r0 &= *r1;
+ *r4 ^= *r0;
+ *r1 ^= *r3;
+ *r1 ^= *r4;
+ *r4 = ~*r4;
+}
+
+static void S3f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r4 = *r0;
+ *r0 |= *r3;
+ *r3 ^= *r1;
+ *r1 &= *r4;
+ *r4 ^= *r2;
+ *r2 ^= *r3;
+ *r3 &= *r0;
+ *r4 |= *r1;
+ *r3 ^= *r4;
+ *r0 ^= *r1;
+ *r4 &= *r0;
+ *r1 ^= *r3;
+ *r4 ^= *r2;
+ *r1 |= *r0;
+ *r1 ^= *r2;
+ *r0 ^= *r3;
+ *r2 = *r1;
+ *r1 |= *r3;
+ *r1 ^= *r0;
+}
+
+static void S4f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r1 ^= *r3;
+ *r3 = ~*r3;
+ *r2 ^= *r3;
+ *r3 ^= *r0;
+ *r4 = *r1;
+ *r1 &= *r3;
+ *r1 ^= *r2;
+ *r4 ^= *r3;
+ *r0 ^= *r4;
+ *r2 &= *r4;
+ *r2 ^= *r0;
+ *r0 &= *r1;
+ *r3 ^= *r0;
+ *r4 |= *r1;
+ *r4 ^= *r0;
+ *r0 |= *r3;
+ *r0 ^= *r2;
+ *r2 &= *r3;
+ *r0 = ~*r0;
+ *r4 ^= *r2;
+}
+
+static void S5f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r0 ^= *r1;
+ *r1 ^= *r3;
+ *r3 = ~*r3;
+ *r4 = *r1;
+ *r1 &= *r0;
+ *r2 ^= *r3;
+ *r1 ^= *r2;
+ *r2 |= *r4;
+ *r4 ^= *r3;
+ *r3 &= *r1;
+ *r3 ^= *r0;
+ *r4 ^= *r1;
+ *r4 ^= *r2;
+ *r2 ^= *r0;
+ *r0 &= *r3;
+ *r2 = ~*r2;
+ *r0 ^= *r4;
+ *r4 |= *r3;
+ *r2 ^= *r4;
+}
+
+static void S6f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r2 = ~*r2;
+ *r4 = *r3;
+ *r3 &= *r0;
+ *r0 ^= *r4;
+ *r3 ^= *r2;
+ *r2 |= *r4;
+ *r1 ^= *r3;
+ *r2 ^= *r0;
+ *r0 |= *r1;
+ *r2 ^= *r1;
+ *r4 ^= *r0;
+ *r0 |= *r3;
+ *r0 ^= *r2;
+ *r4 ^= *r3;
+ *r4 ^= *r0;
+ *r3 = ~*r3;
+ *r2 &= *r4;
+ *r2 ^= *r3;
+}
+
+static void S7f (unsigned __int32 *r0, unsigned __int32 *r1, unsigned __int32 *r2, unsigned __int32 *r3, unsigned __int32 *r4)
+{
+ *r4 = *r2;
+ *r2 &= *r1;
+ *r2 ^= *r3;
+ *r3 &= *r1;
+ *r4 ^= *r2;
+ *r2 ^= *r1;
+ *r1 ^= *r0;
+ *r0 |= *r4;
+ *r0 ^= *r2;
+ *r3 ^= *r1;
+ *r2 ^= *r3;
+ *r3 &= *r0;
+ *r3 ^= *r4;
+ *r4 ^= *r2;
+ *r2 &= *r0;
+ *r4 = ~*r4;
+ *r2 ^= *r4;
+ *r4 &= *r0;
+ *r1 ^= *r3;
+ *r4 ^= *r1;
+}
+
+static void KXf (const unsigned __int32 *k, unsigned int r, unsigned __int32 *a, unsigned __int32 *b, unsigned __int32 *c, unsigned __int32 *d)
+{
+ *a ^= k[r];
+ *b ^= k[r + 1];
+ *c ^= k[r + 2];
+ *d ^= k[r + 3];
+}
+
+#endif // TC_MINIMIZE_CODE_SIZE
+
+#ifndef TC_MINIMIZE_CODE_SIZE
+
+void serpent_set_key(const unsigned __int8 userKey[], int keylen, unsigned __int8 *ks)
+{
+ unsigned __int32 a,b,c,d,e;
+ unsigned __int32 *k = (unsigned __int32 *)ks;
+ unsigned __int32 t;
+ int i;
+
+ for (i = 0; i < keylen / (int)sizeof(__int32); i++)
+ k[i] = LE32(((unsigned __int32*)userKey)[i]);
+
+ if (keylen < 32)
+ k[keylen/4] |= (unsigned __int32)1 << ((keylen%4)*8);
+
+ k += 8;
+ t = k[-1];
+ for (i = 0; i < 132; ++i)
+ k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
+ k -= 20;
+
+#define LK(r, a, b, c, d, e) {\
+ a = k[(8-r)*4 + 0]; \
+ b = k[(8-r)*4 + 1]; \
+ c = k[(8-r)*4 + 2]; \
+ d = k[(8-r)*4 + 3];}
+
+#define SK(r, a, b, c, d, e) {\
+ k[(8-r)*4 + 4] = a; \
+ k[(8-r)*4 + 5] = b; \
+ k[(8-r)*4 + 6] = c; \
+ k[(8-r)*4 + 7] = d;} \
+
+ for (i=0; i<4; i++)
+ {
+ afterS2(LK); afterS2(S3); afterS3(SK);
+ afterS1(LK); afterS1(S2); afterS2(SK);
+ afterS0(LK); afterS0(S1); afterS1(SK);
+ beforeS0(LK); beforeS0(S0); afterS0(SK);
+ k += 8*4;
+ afterS6(LK); afterS6(S7); afterS7(SK);
+ afterS5(LK); afterS5(S6); afterS6(SK);
+ afterS4(LK); afterS4(S5); afterS5(SK);
+ afterS3(LK); afterS3(S4); afterS4(SK);
+ }
+ afterS2(LK); afterS2(S3); afterS3(SK);
+}
+
+#else // TC_MINIMIZE_CODE_SIZE
+
+static void LKf (unsigned __int32 *k, unsigned int r, unsigned __int32 *a, unsigned __int32 *b, unsigned __int32 *c, unsigned __int32 *d)
+{
+ *a = k[r];
+ *b = k[r + 1];
+ *c = k[r + 2];
+ *d = k[r + 3];
+}
+
+static void SKf (unsigned __int32 *k, unsigned int r, unsigned __int32 *a, unsigned __int32 *b, unsigned __int32 *c, unsigned __int32 *d)
+{
+ k[r + 4] = *a;
+ k[r + 5] = *b;
+ k[r + 6] = *c;
+ k[r + 7] = *d;
+}
+
+void serpent_set_key(const unsigned __int8 userKey[], int keylen, unsigned __int8 *ks)
+{
+ unsigned __int32 a,b,c,d,e;
+ unsigned __int32 *k = (unsigned __int32 *)ks;
+ unsigned __int32 t;
+ int i;
+
+ for (i = 0; i < keylen / (int)sizeof(__int32); i++)
+ k[i] = LE32(((unsigned __int32*)userKey)[i]);
+
+ if (keylen < 32)
+ k[keylen/4] |= (unsigned __int32)1 << ((keylen%4)*8);
+
+ k += 8;
+ t = k[-1];
+ for (i = 0; i < 132; ++i)
+ k[i] = t = rotlFixed(k[i-8] ^ k[i-5] ^ k[i-3] ^ t ^ 0x9e3779b9 ^ i, 11);
+ k -= 20;
+
+ for (i=0; i<4; i++)
+ {
+ LKf (k, 20, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); SKf (k, 16, &e, &b, &d, &c);
+ LKf (k, 24, &c, &b, &a, &e); S2f (&c, &b, &a, &e, &d); SKf (k, 20, &a, &e, &b, &d);
+ LKf (k, 28, &b, &e, &c, &a); S1f (&b, &e, &c, &a, &d); SKf (k, 24, &c, &b, &a, &e);
+ LKf (k, 32, &a, &b, &c, &d); S0f (&a, &b, &c, &d, &e); SKf (k, 28, &b, &e, &c, &a);
+ k += 8*4;
+ LKf (k, 4, &a, &c, &d, &b); S7f (&a, &c, &d, &b, &e); SKf (k, 0, &d, &e, &b, &a);
+ LKf (k, 8, &a, &c, &b, &e); S6f (&a, &c, &b, &e, &d); SKf (k, 4, &a, &c, &d, &b);
+ LKf (k, 12, &b, &a, &e, &c); S5f (&b, &a, &e, &c, &d); SKf (k, 8, &a, &c, &b, &e);
+ LKf (k, 16, &e, &b, &d, &c); S4f (&e, &b, &d, &c, &a); SKf (k, 12, &b, &a, &e, &c);
+ }
+ LKf (k, 20, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); SKf (k, 16, &e, &b, &d, &c);
+}
+
+#endif // TC_MINIMIZE_CODE_SIZE
+
+
+#ifndef TC_MINIMIZE_CODE_SIZE
+
+void serpent_encrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ unsigned __int32 a, b, c, d, e;
+ unsigned int i=1;
+ const unsigned __int32 *k = (unsigned __int32 *)ks + 8;
+ unsigned __int32 *in = (unsigned __int32 *) inBlock;
+ unsigned __int32 *out = (unsigned __int32 *) outBlock;
+
+ a = LE32(in[0]);
+ b = LE32(in[1]);
+ c = LE32(in[2]);
+ d = LE32(in[3]);
+
+ do
+ {
+ beforeS0(KX); beforeS0(S0); afterS0(LT);
+ afterS0(KX); afterS0(S1); afterS1(LT);
+ afterS1(KX); afterS1(S2); afterS2(LT);
+ afterS2(KX); afterS2(S3); afterS3(LT);
+ afterS3(KX); afterS3(S4); afterS4(LT);
+ afterS4(KX); afterS4(S5); afterS5(LT);
+ afterS5(KX); afterS5(S6); afterS6(LT);
+ afterS6(KX); afterS6(S7);
+
+ if (i == 4)
+ break;
+
+ ++i;
+ c = b;
+ b = e;
+ e = d;
+ d = a;
+ a = e;
+ k += 32;
+ beforeS0(LT);
+ }
+ while (1);
+
+ afterS7(KX);
+
+ out[0] = LE32(d);
+ out[1] = LE32(e);
+ out[2] = LE32(b);
+ out[3] = LE32(a);
+}
+
+#else // TC_MINIMIZE_CODE_SIZE
+
+typedef unsigned __int32 uint32;
+
+static void LTf (uint32 *a, uint32 *b, uint32 *c, uint32 *d)
+{
+ *a = rotlFixed(*a, 13);
+ *c = rotlFixed(*c, 3);
+ *d = rotlFixed(*d ^ *c ^ (*a << 3), 7);
+ *b = rotlFixed(*b ^ *a ^ *c, 1);
+ *a = rotlFixed(*a ^ *b ^ *d, 5);
+ *c = rotlFixed(*c ^ *d ^ (*b << 7), 22);
+}
+
+void serpent_encrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ unsigned __int32 a, b, c, d, e;
+ unsigned int i=1;
+ const unsigned __int32 *k = (unsigned __int32 *)ks + 8;
+ unsigned __int32 *in = (unsigned __int32 *) inBlock;
+ unsigned __int32 *out = (unsigned __int32 *) outBlock;
+
+ a = LE32(in[0]);
+ b = LE32(in[1]);
+ c = LE32(in[2]);
+ d = LE32(in[3]);
+
+ do
+ {
+ KXf (k, 0, &a, &b, &c, &d); S0f (&a, &b, &c, &d, &e); LTf (&b, &e, &c, &a);
+ KXf (k, 4, &b, &e, &c, &a); S1f (&b, &e, &c, &a, &d); LTf (&c, &b, &a, &e);
+ KXf (k, 8, &c, &b, &a, &e); S2f (&c, &b, &a, &e, &d); LTf (&a, &e, &b, &d);
+ KXf (k, 12, &a, &e, &b, &d); S3f (&a, &e, &b, &d, &c); LTf (&e, &b, &d, &c);
+ KXf (k, 16, &e, &b, &d, &c); S4f (&e, &b, &d, &c, &a); LTf (&b, &a, &e, &c);
+ KXf (k, 20, &b, &a, &e, &c); S5f (&b, &a, &e, &c, &d); LTf (&a, &c, &b, &e);
+ KXf (k, 24, &a, &c, &b, &e); S6f (&a, &c, &b, &e, &d); LTf (&a, &c, &d, &b);
+ KXf (k, 28, &a, &c, &d, &b); S7f (&a, &c, &d, &b, &e);
+
+ if (i == 4)
+ break;
+
+ ++i;
+ c = b;
+ b = e;
+ e = d;
+ d = a;
+ a = e;
+ k += 32;
+ LTf (&a,&b,&c,&d);
+ }
+ while (1);
+
+ KXf (k, 32, &d, &e, &b, &a);
+
+ out[0] = LE32(d);
+ out[1] = LE32(e);
+ out[2] = LE32(b);
+ out[3] = LE32(a);
+}
+
+#endif // TC_MINIMIZE_CODE_SIZE
+
+#if !defined (TC_MINIMIZE_CODE_SIZE) || defined (TC_WINDOWS_BOOT_SERPENT)
+
+void serpent_decrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ unsigned __int32 a, b, c, d, e;
+ const unsigned __int32 *k = (unsigned __int32 *)ks + 104;
+ unsigned int i=4;
+ unsigned __int32 *in = (unsigned __int32 *) inBlock;
+ unsigned __int32 *out = (unsigned __int32 *) outBlock;
+
+ a = LE32(in[0]);
+ b = LE32(in[1]);
+ c = LE32(in[2]);
+ d = LE32(in[3]);
+
+ beforeI7(KX);
+ goto start;
+
+ do
+ {
+ c = b;
+ b = d;
+ d = e;
+ k -= 32;
+ beforeI7(ILT);
+start:
+ beforeI7(I7); afterI7(KX);
+ afterI7(ILT); afterI7(I6); afterI6(KX);
+ afterI6(ILT); afterI6(I5); afterI5(KX);
+ afterI5(ILT); afterI5(I4); afterI4(KX);
+ afterI4(ILT); afterI4(I3); afterI3(KX);
+ afterI3(ILT); afterI3(I2); afterI2(KX);
+ afterI2(ILT); afterI2(I1); afterI1(KX);
+ afterI1(ILT); afterI1(I0); afterI0(KX);
+ }
+ while (--i != 0);
+
+ out[0] = LE32(a);
+ out[1] = LE32(d);
+ out[2] = LE32(b);
+ out[3] = LE32(e);
+}
+
+#else // TC_MINIMIZE_CODE_SIZE && !TC_WINDOWS_BOOT_SERPENT
+
+static void ILTf (uint32 *a, uint32 *b, uint32 *c, uint32 *d)
+{
+ *c = rotrFixed(*c, 22);
+ *a = rotrFixed(*a, 5);
+ *c ^= *d ^ (*b << 7);
+ *a ^= *b ^ *d;
+ *b = rotrFixed(*b, 1);
+ *d = rotrFixed(*d, 7) ^ *c ^ (*a << 3);
+ *b ^= *a ^ *c;
+ *c = rotrFixed(*c, 3);
+ *a = rotrFixed(*a, 13);
+}
+
+void serpent_decrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ unsigned __int32 a, b, c, d, e;
+ const unsigned __int32 *k = (unsigned __int32 *)ks + 104;
+ unsigned int i=4;
+ unsigned __int32 *in = (unsigned __int32 *) inBlock;
+ unsigned __int32 *out = (unsigned __int32 *) outBlock;
+
+ a = LE32(in[0]);
+ b = LE32(in[1]);
+ c = LE32(in[2]);
+ d = LE32(in[3]);
+
+ KXf (k, 32, &a, &b, &c, &d);
+ goto start;
+
+ do
+ {
+ c = b;
+ b = d;
+ d = e;
+ k -= 32;
+ beforeI7(ILT);
+start:
+ beforeI7(I7); KXf (k, 28, &d, &a, &b, &e);
+ ILTf (&d, &a, &b, &e); afterI7(I6); KXf (k, 24, &a, &b, &c, &e);
+ ILTf (&a, &b, &c, &e); afterI6(I5); KXf (k, 20, &b, &d, &e, &c);
+ ILTf (&b, &d, &e, &c); afterI5(I4); KXf (k, 16, &b, &c, &e, &a);
+ ILTf (&b, &c, &e, &a); afterI4(I3); KXf (k, 12, &a, &b, &e, &c);
+ ILTf (&a, &b, &e, &c); afterI3(I2); KXf (k, 8, &b, &d, &e, &c);
+ ILTf (&b, &d, &e, &c); afterI2(I1); KXf (k, 4, &a, &b, &c, &e);
+ ILTf (&a, &b, &c, &e); afterI1(I0); KXf (k, 0, &a, &d, &b, &e);
+ }
+ while (--i != 0);
+
+ out[0] = LE32(a);
+ out[1] = LE32(d);
+ out[2] = LE32(b);
+ out[3] = LE32(e);
+}
+
+#endif // TC_MINIMIZE_CODE_SIZE && !TC_WINDOWS_BOOT_SERPENT