VeraCrypt
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-rw-r--r--src/Crypto/CamelliaSmall.c455
1 files changed, 455 insertions, 0 deletions
diff --git a/src/Crypto/CamelliaSmall.c b/src/Crypto/CamelliaSmall.c
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+/*
+ * Camellia implementation
+ *
+ * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * This file is part of mbed TLS (https://tls.mbed.org)
+ */
+/*
+ * The Camellia block cipher was designed by NTT and Mitsubishi Electric
+ * Corporation.
+ *
+ * http://info.isl.ntt.co.jp/crypt/eng/camellia/dl/01espec.pdf
+ */
+
+/* Adapted for VeraCrypt */
+
+#ifdef TC_WINDOWS_BOOT
+#pragma optimize ("t", on)
+#endif
+
+#include "camelliaSmall.h"
+#include <memory.h>
+
+
+//#define MBEDTLS_CAMELLIA_SMALL_MEMORY
+
+/*
+ * 32-bit integer manipulation macros (big endian)
+ */
+#ifndef GET_UINT32_BE
+#define GET_UINT32_BE(n,b,i) \
+{ \
+ (n) = ( (unsigned __int32) (b)[(i) ] << 24 ) \
+ | ( (unsigned __int32) (b)[(i) + 1] << 16 ) \
+ | ( (unsigned __int32) (b)[(i) + 2] << 8 ) \
+ | ( (unsigned __int32) (b)[(i) + 3] ); \
+}
+#endif
+
+#ifndef PUT_UINT32_BE
+#define PUT_UINT32_BE(n,b,i) \
+{ \
+ (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
+ (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
+ (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
+ (b)[(i) + 3] = (unsigned char) ( (n) ); \
+}
+#endif
+
+static const unsigned char SIGMA_CHARS[6][8] =
+{
+ { 0xa0, 0x9e, 0x66, 0x7f, 0x3b, 0xcc, 0x90, 0x8b },
+ { 0xb6, 0x7a, 0xe8, 0x58, 0x4c, 0xaa, 0x73, 0xb2 },
+ { 0xc6, 0xef, 0x37, 0x2f, 0xe9, 0x4f, 0x82, 0xbe },
+ { 0x54, 0xff, 0x53, 0xa5, 0xf1, 0xd3, 0x6f, 0x1c },
+ { 0x10, 0xe5, 0x27, 0xfa, 0xde, 0x68, 0x2d, 0x1d },
+ { 0xb0, 0x56, 0x88, 0xc2, 0xb3, 0xe6, 0xc1, 0xfd }
+};
+
+#if defined(MBEDTLS_CAMELLIA_SMALL_MEMORY)
+
+static const unsigned char FSb[256] =
+{
+ 112,130, 44,236,179, 39,192,229,228,133, 87, 53,234, 12,174, 65,
+ 35,239,107,147, 69, 25,165, 33,237, 14, 79, 78, 29,101,146,189,
+ 134,184,175,143,124,235, 31,206, 62, 48,220, 95, 94,197, 11, 26,
+ 166,225, 57,202,213, 71, 93, 61,217, 1, 90,214, 81, 86,108, 77,
+ 139, 13,154,102,251,204,176, 45,116, 18, 43, 32,240,177,132,153,
+ 223, 76,203,194, 52,126,118, 5,109,183,169, 49,209, 23, 4,215,
+ 20, 88, 58, 97,222, 27, 17, 28, 50, 15,156, 22, 83, 24,242, 34,
+ 254, 68,207,178,195,181,122,145, 36, 8,232,168, 96,252,105, 80,
+ 170,208,160,125,161,137, 98,151, 84, 91, 30,149,224,255,100,210,
+ 16,196, 0, 72,163,247,117,219,138, 3,230,218, 9, 63,221,148,
+ 135, 92,131, 2,205, 74,144, 51,115,103,246,243,157,127,191,226,
+ 82,155,216, 38,200, 55,198, 59,129,150,111, 75, 19,190, 99, 46,
+ 233,121,167,140,159,110,188,142, 41,245,249,182, 47,253,180, 89,
+ 120,152, 6,106,231, 70,113,186,212, 37,171, 66,136,162,141,250,
+ 114, 7,185, 85,248,238,172, 10, 54, 73, 42,104, 60, 56,241,164,
+ 64, 40,211,123,187,201, 67,193, 21,227,173,244,119,199,128,158
+};
+
+#define SBOX1(n) FSb[(n)]
+#define SBOX2(n) (unsigned char)((FSb[(n)] >> 7 ^ FSb[(n)] << 1) & 0xff)
+#define SBOX3(n) (unsigned char)((FSb[(n)] >> 1 ^ FSb[(n)] << 7) & 0xff)
+#define SBOX4(n) FSb[((n) << 1 ^ (n) >> 7) &0xff]
+
+#else /* MBEDTLS_CAMELLIA_SMALL_MEMORY */
+
+static const unsigned char FSb[256] =
+{
+ 112, 130, 44, 236, 179, 39, 192, 229, 228, 133, 87, 53, 234, 12, 174, 65,
+ 35, 239, 107, 147, 69, 25, 165, 33, 237, 14, 79, 78, 29, 101, 146, 189,
+ 134, 184, 175, 143, 124, 235, 31, 206, 62, 48, 220, 95, 94, 197, 11, 26,
+ 166, 225, 57, 202, 213, 71, 93, 61, 217, 1, 90, 214, 81, 86, 108, 77,
+ 139, 13, 154, 102, 251, 204, 176, 45, 116, 18, 43, 32, 240, 177, 132, 153,
+ 223, 76, 203, 194, 52, 126, 118, 5, 109, 183, 169, 49, 209, 23, 4, 215,
+ 20, 88, 58, 97, 222, 27, 17, 28, 50, 15, 156, 22, 83, 24, 242, 34,
+ 254, 68, 207, 178, 195, 181, 122, 145, 36, 8, 232, 168, 96, 252, 105, 80,
+ 170, 208, 160, 125, 161, 137, 98, 151, 84, 91, 30, 149, 224, 255, 100, 210,
+ 16, 196, 0, 72, 163, 247, 117, 219, 138, 3, 230, 218, 9, 63, 221, 148,
+ 135, 92, 131, 2, 205, 74, 144, 51, 115, 103, 246, 243, 157, 127, 191, 226,
+ 82, 155, 216, 38, 200, 55, 198, 59, 129, 150, 111, 75, 19, 190, 99, 46,
+ 233, 121, 167, 140, 159, 110, 188, 142, 41, 245, 249, 182, 47, 253, 180, 89,
+ 120, 152, 6, 106, 231, 70, 113, 186, 212, 37, 171, 66, 136, 162, 141, 250,
+ 114, 7, 185, 85, 248, 238, 172, 10, 54, 73, 42, 104, 60, 56, 241, 164,
+ 64, 40, 211, 123, 187, 201, 67, 193, 21, 227, 173, 244, 119, 199, 128, 158
+};
+
+static const unsigned char FSb2[256] =
+{
+ 224, 5, 88, 217, 103, 78, 129, 203, 201, 11, 174, 106, 213, 24, 93, 130,
+ 70, 223, 214, 39, 138, 50, 75, 66, 219, 28, 158, 156, 58, 202, 37, 123,
+ 13, 113, 95, 31, 248, 215, 62, 157, 124, 96, 185, 190, 188, 139, 22, 52,
+ 77, 195, 114, 149, 171, 142, 186, 122, 179, 2, 180, 173, 162, 172, 216, 154,
+ 23, 26, 53, 204, 247, 153, 97, 90, 232, 36, 86, 64, 225, 99, 9, 51,
+ 191, 152, 151, 133, 104, 252, 236, 10, 218, 111, 83, 98, 163, 46, 8, 175,
+ 40, 176, 116, 194, 189, 54, 34, 56, 100, 30, 57, 44, 166, 48, 229, 68,
+ 253, 136, 159, 101, 135, 107, 244, 35, 72, 16, 209, 81, 192, 249, 210, 160,
+ 85, 161, 65, 250, 67, 19, 196, 47, 168, 182, 60, 43, 193, 255, 200, 165,
+ 32, 137, 0, 144, 71, 239, 234, 183, 21, 6, 205, 181, 18, 126, 187, 41,
+ 15, 184, 7, 4, 155, 148, 33, 102, 230, 206, 237, 231, 59, 254, 127, 197,
+ 164, 55, 177, 76, 145, 110, 141, 118, 3, 45, 222, 150, 38, 125, 198, 92,
+ 211, 242, 79, 25, 63, 220, 121, 29, 82, 235, 243, 109, 94, 251, 105, 178,
+ 240, 49, 12, 212, 207, 140, 226, 117, 169, 74, 87, 132, 17, 69, 27, 245,
+ 228, 14, 115, 170, 241, 221, 89, 20, 108, 146, 84, 208, 120, 112, 227, 73,
+ 128, 80, 167, 246, 119, 147, 134, 131, 42, 199, 91, 233, 238, 143, 1, 61
+};
+
+static const unsigned char FSb3[256] =
+{
+ 56, 65, 22, 118, 217, 147, 96, 242, 114, 194, 171, 154, 117, 6, 87, 160,
+ 145, 247, 181, 201, 162, 140, 210, 144, 246, 7, 167, 39, 142, 178, 73, 222,
+ 67, 92, 215, 199, 62, 245, 143, 103, 31, 24, 110, 175, 47, 226, 133, 13,
+ 83, 240, 156, 101, 234, 163, 174, 158, 236, 128, 45, 107, 168, 43, 54, 166,
+ 197, 134, 77, 51, 253, 102, 88, 150, 58, 9, 149, 16, 120, 216, 66, 204,
+ 239, 38, 229, 97, 26, 63, 59, 130, 182, 219, 212, 152, 232, 139, 2, 235,
+ 10, 44, 29, 176, 111, 141, 136, 14, 25, 135, 78, 11, 169, 12, 121, 17,
+ 127, 34, 231, 89, 225, 218, 61, 200, 18, 4, 116, 84, 48, 126, 180, 40,
+ 85, 104, 80, 190, 208, 196, 49, 203, 42, 173, 15, 202, 112, 255, 50, 105,
+ 8, 98, 0, 36, 209, 251, 186, 237, 69, 129, 115, 109, 132, 159, 238, 74,
+ 195, 46, 193, 1, 230, 37, 72, 153, 185, 179, 123, 249, 206, 191, 223, 113,
+ 41, 205, 108, 19, 100, 155, 99, 157, 192, 75, 183, 165, 137, 95, 177, 23,
+ 244, 188, 211, 70, 207, 55, 94, 71, 148, 250, 252, 91, 151, 254, 90, 172,
+ 60, 76, 3, 53, 243, 35, 184, 93, 106, 146, 213, 33, 68, 81, 198, 125,
+ 57, 131, 220, 170, 124, 119, 86, 5, 27, 164, 21, 52, 30, 28, 248, 82,
+ 32, 20, 233, 189, 221, 228, 161, 224, 138, 241, 214, 122, 187, 227, 64, 79
+};
+
+static const unsigned char FSb4[256] =
+{
+ 112, 44, 179, 192, 228, 87, 234, 174, 35, 107, 69, 165, 237, 79, 29, 146,
+ 134, 175, 124, 31, 62, 220, 94, 11, 166, 57, 213, 93, 217, 90, 81, 108,
+ 139, 154, 251, 176, 116, 43, 240, 132, 223, 203, 52, 118, 109, 169, 209, 4,
+ 20, 58, 222, 17, 50, 156, 83, 242, 254, 207, 195, 122, 36, 232, 96, 105,
+ 170, 160, 161, 98, 84, 30, 224, 100, 16, 0, 163, 117, 138, 230, 9, 221,
+ 135, 131, 205, 144, 115, 246, 157, 191, 82, 216, 200, 198, 129, 111, 19, 99,
+ 233, 167, 159, 188, 41, 249, 47, 180, 120, 6, 231, 113, 212, 171, 136, 141,
+ 114, 185, 248, 172, 54, 42, 60, 241, 64, 211, 187, 67, 21, 173, 119, 128,
+ 130, 236, 39, 229, 133, 53, 12, 65, 239, 147, 25, 33, 14, 78, 101, 189,
+ 184, 143, 235, 206, 48, 95, 197, 26, 225, 202, 71, 61, 1, 214, 86, 77,
+ 13, 102, 204, 45, 18, 32, 177, 153, 76, 194, 126, 5, 183, 49, 23, 215,
+ 88, 97, 27, 28, 15, 22, 24, 34, 68, 178, 181, 145, 8, 168, 252, 80,
+ 208, 125, 137, 151, 91, 149, 255, 210, 196, 72, 247, 219, 3, 218, 63, 148,
+ 92, 2, 74, 51, 103, 243, 127, 226, 155, 38, 55, 59, 150, 75, 190, 46,
+ 121, 140, 110, 142, 245, 182, 253, 89, 152, 106, 70, 186, 37, 66, 162, 250,
+ 7, 85, 238, 10, 73, 104, 56, 164, 40, 123, 201, 193, 227, 244, 199, 158
+};
+
+#define SBOX1(n) FSb[(n)]
+#define SBOX2(n) FSb2[(n)]
+#define SBOX3(n) FSb3[(n)]
+#define SBOX4(n) FSb4[(n)]
+
+#endif /* MBEDTLS_CAMELLIA_SMALL_MEMORY */
+
+static const unsigned char shifts[4][4] =
+{
+ { 1, 0, 1, 1 }, /* KL */
+ { 1, 1, 0, 1 }, /* KR */
+ { 1, 1, 1, 0 }, /* KA */
+ { 1, 1, 0, 1 } /* KB */
+};
+
+static const signed char indexes[4][20] =
+{
+ { 0, 1, 2, 3, 61, 62, 63, 60, -1, -1,
+ -1, -1, 27, 24, 25, 26, 35, 32, 33, 34 }, /* KL -> RK */
+ { -1, -1, -1, -1, 8, 9, 10, 11, 16, 17,
+ 18, 19, -1, -1, -1, -1, 39, 36, 37, 38 }, /* KR -> RK */
+ { -1, -1, -1, -1, 12, 13, 14, 15, 58, 59,
+ 56, 57, 31, 28, 29, 30, -1, -1, -1, -1 }, /* KA -> RK */
+ { 4, 5, 6, 7, 65, 66, 67, 64, 20, 21,
+ 22, 23, -1, -1, -1, -1, 43, 40, 41, 42 } /* KB -> RK */
+};
+
+static const signed char transposes[20] =
+{
+ 25, 26, 27, 24,
+ 29, 30, 31, 28,
+ 18, 19, 16, 17,
+ -1, -1, -1, -1,
+ -1, -1, -1, -1
+};
+
+/* Shift macro for 128 bit strings with rotation smaller than 32 bits (!) */
+#define ROTL(DEST, SRC, SHIFT) \
+{ \
+ (DEST)[0] = (SRC)[0] << (SHIFT) ^ (SRC)[1] >> (32 - (SHIFT)); \
+ (DEST)[1] = (SRC)[1] << (SHIFT) ^ (SRC)[2] >> (32 - (SHIFT)); \
+ (DEST)[2] = (SRC)[2] << (SHIFT) ^ (SRC)[3] >> (32 - (SHIFT)); \
+ (DEST)[3] = (SRC)[3] << (SHIFT) ^ (SRC)[0] >> (32 - (SHIFT)); \
+}
+
+#define FL(XL, XR, KL, KR) \
+{ \
+ (XR) = ((((XL) & (KL)) << 1) | (((XL) & (KL)) >> 31)) ^ (XR); \
+ (XL) = ((XR) | (KR)) ^ (XL); \
+}
+
+#define FLInv(YL, YR, KL, KR) \
+{ \
+ (YL) = ((YR) | (KR)) ^ (YL); \
+ (YR) = ((((YL) & (KL)) << 1) | (((YL) & (KL)) >> 31)) ^ (YR); \
+}
+
+#define SHIFT_AND_PLACE(OFFSET) \
+{ \
+ TK[0] = KC[(OFFSET) * 4 + 0]; \
+ TK[1] = KC[(OFFSET) * 4 + 1]; \
+ TK[2] = KC[(OFFSET) * 4 + 2]; \
+ TK[3] = KC[(OFFSET) * 4 + 3]; \
+ \
+ for( i = 1; i <= 4; i++ ) \
+ if( shifts[(OFFSET)][i -1] ) \
+ ROTL(TK + i * 4, TK, ( 15 * i ) % 32); \
+ \
+ for( i = 0; i < 20; i++ ) \
+ if( indexes[(OFFSET)][i] != -1 ) { \
+ RK[indexes[(OFFSET)][i]] = TK[ i ]; \
+ } \
+}
+
+static void camellia_feistel( const unsigned __int32 x[2], const unsigned __int32 k[2],
+ unsigned __int32 z[2])
+{
+ unsigned __int32 I0, I1;
+ I0 = x[0] ^ k[0];
+ I1 = x[1] ^ k[1];
+
+ I0 = ((unsigned __int32) SBOX1((I0 >> 24) & 0xFF) << 24) |
+ ((unsigned __int32) SBOX2((I0 >> 16) & 0xFF) << 16) |
+ ((unsigned __int32) SBOX3((I0 >> 8) & 0xFF) << 8) |
+ ((unsigned __int32) SBOX4((I0 ) & 0xFF) );
+ I1 = ((unsigned __int32) SBOX2((I1 >> 24) & 0xFF) << 24) |
+ ((unsigned __int32) SBOX3((I1 >> 16) & 0xFF) << 16) |
+ ((unsigned __int32) SBOX4((I1 >> 8) & 0xFF) << 8) |
+ ((unsigned __int32) SBOX1((I1 ) & 0xFF) );
+
+ I0 ^= (I1 << 8) | (I1 >> 24);
+ I1 ^= (I0 << 16) | (I0 >> 16);
+ I0 ^= (I1 >> 8) | (I1 << 24);
+ I1 ^= (I0 >> 8) | (I0 << 24);
+
+ z[0] ^= I1;
+ z[1] ^= I0;
+}
+
+/*
+ * Camellia key schedule (encryption)
+ */
+void mbedtls_camellia_setkey_enc( const unsigned char *key, unsigned __int32 *RK)
+{
+ int i;
+ unsigned char t[64];
+ unsigned __int32 SIGMA[6][2];
+ unsigned __int32 KC[16];
+ unsigned __int32 TK[20];
+
+ memset( t, 0, 64 );
+ memset( RK, 0, CAMELLIA_KS/2 );
+
+ for( i = 0; i < 32; ++i )
+ t[i] = key[i];
+
+ /*
+ * Prepare SIGMA values
+ */
+ for( i = 0; i < 6; i++ ) {
+ GET_UINT32_BE( SIGMA[i][0], SIGMA_CHARS[i], 0 );
+ GET_UINT32_BE( SIGMA[i][1], SIGMA_CHARS[i], 4 );
+ }
+
+ /*
+ * Key storage in KC
+ * Order: KL, KR, KA, KB
+ */
+ memset( KC, 0, sizeof(KC) );
+
+ /* Store KL, KR */
+ for( i = 0; i < 8; i++ )
+ GET_UINT32_BE( KC[i], t, i * 4 );
+
+ /* Generate KA */
+ for( i = 0; i < 4; ++i )
+ KC[8 + i] = KC[i] ^ KC[4 + i];
+
+ camellia_feistel( KC + 8, SIGMA[0], KC + 10 );
+ camellia_feistel( KC + 10, SIGMA[1], KC + 8 );
+
+ for( i = 0; i < 4; ++i )
+ KC[8 + i] ^= KC[i];
+
+ camellia_feistel( KC + 8, SIGMA[2], KC + 10 );
+ camellia_feistel( KC + 10, SIGMA[3], KC + 8 );
+
+ /* Generate KB */
+ for( i = 0; i < 4; ++i )
+ KC[12 + i] = KC[4 + i] ^ KC[8 + i];
+
+ camellia_feistel( KC + 12, SIGMA[4], KC + 14 );
+ camellia_feistel( KC + 14, SIGMA[5], KC + 12 );
+
+ /*
+ * Generating subkeys
+ */
+
+ /* Manipulating KL */
+ SHIFT_AND_PLACE( 0 );
+
+ /* Manipulating KR */
+ SHIFT_AND_PLACE( 1 );
+
+ /* Manipulating KA */
+ SHIFT_AND_PLACE( 2 );
+
+ /* Manipulating KB */
+ SHIFT_AND_PLACE( 3 );
+
+ /* Do transpositions */
+ for( i = 0; i < 20; i++ ) {
+ if( transposes[i] != -1 ) {
+ RK[32 + 12 + i] = RK[transposes[i]];
+ }
+ }
+}
+
+/*
+ * Camellia key schedule (decryption)
+ */
+void camellia_set_key(const unsigned __int8 key[], unsigned __int8 *ks)
+{
+ int i;
+ unsigned __int32 *RK = (unsigned __int32 *) (ks + (CAMELLIA_KS /2));
+ unsigned __int32 *SK;
+
+ mbedtls_camellia_setkey_enc( key, (unsigned __int32 *) ks );
+
+ SK = ((unsigned __int32 *) ks) + 24 * 2 + 8 * 2;
+
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+
+ for( i = 22 + 8, SK -= 6; i > 0; i--, SK -= 4 )
+ {
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+ }
+
+ SK -= 2;
+
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+ *RK++ = *SK++;
+}
+
+/*
+ * Camellia-ECB block encryption/decryption
+ */
+void mbedtls_camellia_crypt_ecb(const unsigned __int8 *input,
+ unsigned __int8 *output, unsigned __int8 * ks)
+{
+ int NR = 4;
+ unsigned __int32 *RK = (unsigned __int32 *) ks;
+ unsigned __int32 X[4];
+
+ GET_UINT32_BE( X[0], input, 0 );
+ GET_UINT32_BE( X[1], input, 4 );
+ GET_UINT32_BE( X[2], input, 8 );
+ GET_UINT32_BE( X[3], input, 12 );
+
+ X[0] ^= *RK++;
+ X[1] ^= *RK++;
+ X[2] ^= *RK++;
+ X[3] ^= *RK++;
+
+ while( NR ) {
+ --NR;
+ camellia_feistel( X, RK, X + 2 );
+ RK += 2;
+ camellia_feistel( X + 2, RK, X );
+ RK += 2;
+ camellia_feistel( X, RK, X + 2 );
+ RK += 2;
+ camellia_feistel( X + 2, RK, X );
+ RK += 2;
+ camellia_feistel( X, RK, X + 2 );
+ RK += 2;
+ camellia_feistel( X + 2, RK, X );
+ RK += 2;
+
+ if( NR ) {
+ FL(X[0], X[1], RK[0], RK[1]);
+ RK += 2;
+ FLInv(X[2], X[3], RK[0], RK[1]);
+ RK += 2;
+ }
+ }
+
+ X[2] ^= *RK++;
+ X[3] ^= *RK++;
+ X[0] ^= *RK++;
+ X[1] ^= *RK++;
+
+ PUT_UINT32_BE( X[2], output, 0 );
+ PUT_UINT32_BE( X[3], output, 4 );
+ PUT_UINT32_BE( X[0], output, 8 );
+ PUT_UINT32_BE( X[1], output, 12 );
+}
+
+void camellia_encrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ mbedtls_camellia_crypt_ecb (inBlock, outBlock, ks);
+}
+
+void camellia_decrypt(const unsigned __int8 *inBlock, unsigned __int8 *outBlock, unsigned __int8 *ks)
+{
+ mbedtls_camellia_crypt_ecb (inBlock, outBlock, ks + (CAMELLIA_KS / 2));
+}
+