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-rw-r--r--src/block/square/square.cpp192
1 files changed, 106 insertions, 86 deletions
diff --git a/src/block/square/square.cpp b/src/block/square/square.cpp
index cb226542d..fdd47d3b2 100644
--- a/src/block/square/square.cpp
+++ b/src/block/square/square.cpp
@@ -14,103 +14,123 @@ namespace Botan {
/*
* Square Encryption
*/
-void Square::enc(const byte in[], byte out[]) const
+void Square::encrypt_n(const byte in[], byte out[], u32bit blocks) const
{
- u32bit T0, T1, T2, T3, B0, B1, B2, B3;
- B0 = TE0[in[ 0] ^ ME[ 0]] ^ TE1[in[ 4] ^ ME[ 4]] ^
- TE2[in[ 8] ^ ME[ 8]] ^ TE3[in[12] ^ ME[12]] ^ EK[0];
- B1 = TE0[in[ 1] ^ ME[ 1]] ^ TE1[in[ 5] ^ ME[ 5]] ^
- TE2[in[ 9] ^ ME[ 9]] ^ TE3[in[13] ^ ME[13]] ^ EK[1];
- B2 = TE0[in[ 2] ^ ME[ 2]] ^ TE1[in[ 6] ^ ME[ 6]] ^
- TE2[in[10] ^ ME[10]] ^ TE3[in[14] ^ ME[14]] ^ EK[2];
- B3 = TE0[in[ 3] ^ ME[ 3]] ^ TE1[in[ 7] ^ ME[ 7]] ^
- TE2[in[11] ^ ME[11]] ^ TE3[in[15] ^ ME[15]] ^ EK[3];
- for(u32bit j = 1; j != 7; j += 2)
+ for(u32bit i = 0; i != blocks; ++i)
{
- T0 = TE0[get_byte(0, B0)] ^ TE1[get_byte(0, B1)] ^
- TE2[get_byte(0, B2)] ^ TE3[get_byte(0, B3)] ^ EK[4*j+0];
- T1 = TE0[get_byte(1, B0)] ^ TE1[get_byte(1, B1)] ^
- TE2[get_byte(1, B2)] ^ TE3[get_byte(1, B3)] ^ EK[4*j+1];
- T2 = TE0[get_byte(2, B0)] ^ TE1[get_byte(2, B1)] ^
- TE2[get_byte(2, B2)] ^ TE3[get_byte(2, B3)] ^ EK[4*j+2];
- T3 = TE0[get_byte(3, B0)] ^ TE1[get_byte(3, B1)] ^
- TE2[get_byte(3, B2)] ^ TE3[get_byte(3, B3)] ^ EK[4*j+3];
- B0 = TE0[get_byte(0, T0)] ^ TE1[get_byte(0, T1)] ^
- TE2[get_byte(0, T2)] ^ TE3[get_byte(0, T3)] ^ EK[4*j+4];
- B1 = TE0[get_byte(1, T0)] ^ TE1[get_byte(1, T1)] ^
- TE2[get_byte(1, T2)] ^ TE3[get_byte(1, T3)] ^ EK[4*j+5];
- B2 = TE0[get_byte(2, T0)] ^ TE1[get_byte(2, T1)] ^
- TE2[get_byte(2, T2)] ^ TE3[get_byte(2, T3)] ^ EK[4*j+6];
- B3 = TE0[get_byte(3, T0)] ^ TE1[get_byte(3, T1)] ^
- TE2[get_byte(3, T2)] ^ TE3[get_byte(3, T3)] ^ EK[4*j+7];
+ u32bit T0, T1, T2, T3, B0, B1, B2, B3;
+
+ B0 = TE0[in[ 0] ^ ME[ 0]] ^ TE1[in[ 4] ^ ME[ 4]] ^
+ TE2[in[ 8] ^ ME[ 8]] ^ TE3[in[12] ^ ME[12]] ^ EK[0];
+ B1 = TE0[in[ 1] ^ ME[ 1]] ^ TE1[in[ 5] ^ ME[ 5]] ^
+ TE2[in[ 9] ^ ME[ 9]] ^ TE3[in[13] ^ ME[13]] ^ EK[1];
+ B2 = TE0[in[ 2] ^ ME[ 2]] ^ TE1[in[ 6] ^ ME[ 6]] ^
+ TE2[in[10] ^ ME[10]] ^ TE3[in[14] ^ ME[14]] ^ EK[2];
+ B3 = TE0[in[ 3] ^ ME[ 3]] ^ TE1[in[ 7] ^ ME[ 7]] ^
+ TE2[in[11] ^ ME[11]] ^ TE3[in[15] ^ ME[15]] ^ EK[3];
+
+ for(u32bit j = 1; j != 7; j += 2)
+ {
+ T0 = TE0[get_byte(0, B0)] ^ TE1[get_byte(0, B1)] ^
+ TE2[get_byte(0, B2)] ^ TE3[get_byte(0, B3)] ^ EK[4*j+0];
+ T1 = TE0[get_byte(1, B0)] ^ TE1[get_byte(1, B1)] ^
+ TE2[get_byte(1, B2)] ^ TE3[get_byte(1, B3)] ^ EK[4*j+1];
+ T2 = TE0[get_byte(2, B0)] ^ TE1[get_byte(2, B1)] ^
+ TE2[get_byte(2, B2)] ^ TE3[get_byte(2, B3)] ^ EK[4*j+2];
+ T3 = TE0[get_byte(3, B0)] ^ TE1[get_byte(3, B1)] ^
+ TE2[get_byte(3, B2)] ^ TE3[get_byte(3, B3)] ^ EK[4*j+3];
+
+ B0 = TE0[get_byte(0, T0)] ^ TE1[get_byte(0, T1)] ^
+ TE2[get_byte(0, T2)] ^ TE3[get_byte(0, T3)] ^ EK[4*j+4];
+ B1 = TE0[get_byte(1, T0)] ^ TE1[get_byte(1, T1)] ^
+ TE2[get_byte(1, T2)] ^ TE3[get_byte(1, T3)] ^ EK[4*j+5];
+ B2 = TE0[get_byte(2, T0)] ^ TE1[get_byte(2, T1)] ^
+ TE2[get_byte(2, T2)] ^ TE3[get_byte(2, T3)] ^ EK[4*j+6];
+ B3 = TE0[get_byte(3, T0)] ^ TE1[get_byte(3, T1)] ^
+ TE2[get_byte(3, T2)] ^ TE3[get_byte(3, T3)] ^ EK[4*j+7];
+ }
+
+ out[ 0] = SE[get_byte(0, B0)] ^ ME[16];
+ out[ 1] = SE[get_byte(0, B1)] ^ ME[17];
+ out[ 2] = SE[get_byte(0, B2)] ^ ME[18];
+ out[ 3] = SE[get_byte(0, B3)] ^ ME[19];
+ out[ 4] = SE[get_byte(1, B0)] ^ ME[20];
+ out[ 5] = SE[get_byte(1, B1)] ^ ME[21];
+ out[ 6] = SE[get_byte(1, B2)] ^ ME[22];
+ out[ 7] = SE[get_byte(1, B3)] ^ ME[23];
+ out[ 8] = SE[get_byte(2, B0)] ^ ME[24];
+ out[ 9] = SE[get_byte(2, B1)] ^ ME[25];
+ out[10] = SE[get_byte(2, B2)] ^ ME[26];
+ out[11] = SE[get_byte(2, B3)] ^ ME[27];
+ out[12] = SE[get_byte(3, B0)] ^ ME[28];
+ out[13] = SE[get_byte(3, B1)] ^ ME[29];
+ out[14] = SE[get_byte(3, B2)] ^ ME[30];
+ out[15] = SE[get_byte(3, B3)] ^ ME[31];
+
+ in += BLOCK_SIZE;
+ out += BLOCK_SIZE;
}
- out[ 0] = SE[get_byte(0, B0)] ^ ME[16];
- out[ 1] = SE[get_byte(0, B1)] ^ ME[17];
- out[ 2] = SE[get_byte(0, B2)] ^ ME[18];
- out[ 3] = SE[get_byte(0, B3)] ^ ME[19];
- out[ 4] = SE[get_byte(1, B0)] ^ ME[20];
- out[ 5] = SE[get_byte(1, B1)] ^ ME[21];
- out[ 6] = SE[get_byte(1, B2)] ^ ME[22];
- out[ 7] = SE[get_byte(1, B3)] ^ ME[23];
- out[ 8] = SE[get_byte(2, B0)] ^ ME[24];
- out[ 9] = SE[get_byte(2, B1)] ^ ME[25];
- out[10] = SE[get_byte(2, B2)] ^ ME[26];
- out[11] = SE[get_byte(2, B3)] ^ ME[27];
- out[12] = SE[get_byte(3, B0)] ^ ME[28];
- out[13] = SE[get_byte(3, B1)] ^ ME[29];
- out[14] = SE[get_byte(3, B2)] ^ ME[30];
- out[15] = SE[get_byte(3, B3)] ^ ME[31];
}
/*
* Square Decryption
*/
-void Square::dec(const byte in[], byte out[]) const
+void Square::decrypt_n(const byte in[], byte out[], u32bit blocks) const
{
- u32bit T0, T1, T2, T3, B0, B1, B2, B3;
- B0 = TD0[in[ 0] ^ MD[ 0]] ^ TD1[in[ 4] ^ MD[ 4]] ^
- TD2[in[ 8] ^ MD[ 8]] ^ TD3[in[12] ^ MD[12]] ^ DK[0];
- B1 = TD0[in[ 1] ^ MD[ 1]] ^ TD1[in[ 5] ^ MD[ 5]] ^
- TD2[in[ 9] ^ MD[ 9]] ^ TD3[in[13] ^ MD[13]] ^ DK[1];
- B2 = TD0[in[ 2] ^ MD[ 2]] ^ TD1[in[ 6] ^ MD[ 6]] ^
- TD2[in[10] ^ MD[10]] ^ TD3[in[14] ^ MD[14]] ^ DK[2];
- B3 = TD0[in[ 3] ^ MD[ 3]] ^ TD1[in[ 7] ^ MD[ 7]] ^
- TD2[in[11] ^ MD[11]] ^ TD3[in[15] ^ MD[15]] ^ DK[3];
- for(u32bit j = 1; j != 7; j += 2)
+ for(u32bit i = 0; i != blocks; ++i)
{
- T0 = TD0[get_byte(0, B0)] ^ TD1[get_byte(0, B1)] ^
- TD2[get_byte(0, B2)] ^ TD3[get_byte(0, B3)] ^ DK[4*j+0];
- T1 = TD0[get_byte(1, B0)] ^ TD1[get_byte(1, B1)] ^
- TD2[get_byte(1, B2)] ^ TD3[get_byte(1, B3)] ^ DK[4*j+1];
- T2 = TD0[get_byte(2, B0)] ^ TD1[get_byte(2, B1)] ^
- TD2[get_byte(2, B2)] ^ TD3[get_byte(2, B3)] ^ DK[4*j+2];
- T3 = TD0[get_byte(3, B0)] ^ TD1[get_byte(3, B1)] ^
- TD2[get_byte(3, B2)] ^ TD3[get_byte(3, B3)] ^ DK[4*j+3];
- B0 = TD0[get_byte(0, T0)] ^ TD1[get_byte(0, T1)] ^
- TD2[get_byte(0, T2)] ^ TD3[get_byte(0, T3)] ^ DK[4*j+4];
- B1 = TD0[get_byte(1, T0)] ^ TD1[get_byte(1, T1)] ^
- TD2[get_byte(1, T2)] ^ TD3[get_byte(1, T3)] ^ DK[4*j+5];
- B2 = TD0[get_byte(2, T0)] ^ TD1[get_byte(2, T1)] ^
- TD2[get_byte(2, T2)] ^ TD3[get_byte(2, T3)] ^ DK[4*j+6];
- B3 = TD0[get_byte(3, T0)] ^ TD1[get_byte(3, T1)] ^
- TD2[get_byte(3, T2)] ^ TD3[get_byte(3, T3)] ^ DK[4*j+7];
+ u32bit T0, T1, T2, T3, B0, B1, B2, B3;
+
+ B0 = TD0[in[ 0] ^ MD[ 0]] ^ TD1[in[ 4] ^ MD[ 4]] ^
+ TD2[in[ 8] ^ MD[ 8]] ^ TD3[in[12] ^ MD[12]] ^ DK[0];
+ B1 = TD0[in[ 1] ^ MD[ 1]] ^ TD1[in[ 5] ^ MD[ 5]] ^
+ TD2[in[ 9] ^ MD[ 9]] ^ TD3[in[13] ^ MD[13]] ^ DK[1];
+ B2 = TD0[in[ 2] ^ MD[ 2]] ^ TD1[in[ 6] ^ MD[ 6]] ^
+ TD2[in[10] ^ MD[10]] ^ TD3[in[14] ^ MD[14]] ^ DK[2];
+ B3 = TD0[in[ 3] ^ MD[ 3]] ^ TD1[in[ 7] ^ MD[ 7]] ^
+ TD2[in[11] ^ MD[11]] ^ TD3[in[15] ^ MD[15]] ^ DK[3];
+
+ for(u32bit j = 1; j != 7; j += 2)
+ {
+ T0 = TD0[get_byte(0, B0)] ^ TD1[get_byte(0, B1)] ^
+ TD2[get_byte(0, B2)] ^ TD3[get_byte(0, B3)] ^ DK[4*j+0];
+ T1 = TD0[get_byte(1, B0)] ^ TD1[get_byte(1, B1)] ^
+ TD2[get_byte(1, B2)] ^ TD3[get_byte(1, B3)] ^ DK[4*j+1];
+ T2 = TD0[get_byte(2, B0)] ^ TD1[get_byte(2, B1)] ^
+ TD2[get_byte(2, B2)] ^ TD3[get_byte(2, B3)] ^ DK[4*j+2];
+ T3 = TD0[get_byte(3, B0)] ^ TD1[get_byte(3, B1)] ^
+ TD2[get_byte(3, B2)] ^ TD3[get_byte(3, B3)] ^ DK[4*j+3];
+
+ B0 = TD0[get_byte(0, T0)] ^ TD1[get_byte(0, T1)] ^
+ TD2[get_byte(0, T2)] ^ TD3[get_byte(0, T3)] ^ DK[4*j+4];
+ B1 = TD0[get_byte(1, T0)] ^ TD1[get_byte(1, T1)] ^
+ TD2[get_byte(1, T2)] ^ TD3[get_byte(1, T3)] ^ DK[4*j+5];
+ B2 = TD0[get_byte(2, T0)] ^ TD1[get_byte(2, T1)] ^
+ TD2[get_byte(2, T2)] ^ TD3[get_byte(2, T3)] ^ DK[4*j+6];
+ B3 = TD0[get_byte(3, T0)] ^ TD1[get_byte(3, T1)] ^
+ TD2[get_byte(3, T2)] ^ TD3[get_byte(3, T3)] ^ DK[4*j+7];
+ }
+
+ out[ 0] = SD[get_byte(0, B0)] ^ MD[16];
+ out[ 1] = SD[get_byte(0, B1)] ^ MD[17];
+ out[ 2] = SD[get_byte(0, B2)] ^ MD[18];
+ out[ 3] = SD[get_byte(0, B3)] ^ MD[19];
+ out[ 4] = SD[get_byte(1, B0)] ^ MD[20];
+ out[ 5] = SD[get_byte(1, B1)] ^ MD[21];
+ out[ 6] = SD[get_byte(1, B2)] ^ MD[22];
+ out[ 7] = SD[get_byte(1, B3)] ^ MD[23];
+ out[ 8] = SD[get_byte(2, B0)] ^ MD[24];
+ out[ 9] = SD[get_byte(2, B1)] ^ MD[25];
+ out[10] = SD[get_byte(2, B2)] ^ MD[26];
+ out[11] = SD[get_byte(2, B3)] ^ MD[27];
+ out[12] = SD[get_byte(3, B0)] ^ MD[28];
+ out[13] = SD[get_byte(3, B1)] ^ MD[29];
+ out[14] = SD[get_byte(3, B2)] ^ MD[30];
+ out[15] = SD[get_byte(3, B3)] ^ MD[31];
+
+ in += BLOCK_SIZE;
+ out += BLOCK_SIZE;
}
- out[ 0] = SD[get_byte(0, B0)] ^ MD[16];
- out[ 1] = SD[get_byte(0, B1)] ^ MD[17];
- out[ 2] = SD[get_byte(0, B2)] ^ MD[18];
- out[ 3] = SD[get_byte(0, B3)] ^ MD[19];
- out[ 4] = SD[get_byte(1, B0)] ^ MD[20];
- out[ 5] = SD[get_byte(1, B1)] ^ MD[21];
- out[ 6] = SD[get_byte(1, B2)] ^ MD[22];
- out[ 7] = SD[get_byte(1, B3)] ^ MD[23];
- out[ 8] = SD[get_byte(2, B0)] ^ MD[24];
- out[ 9] = SD[get_byte(2, B1)] ^ MD[25];
- out[10] = SD[get_byte(2, B2)] ^ MD[26];
- out[11] = SD[get_byte(2, B3)] ^ MD[27];
- out[12] = SD[get_byte(3, B0)] ^ MD[28];
- out[13] = SD[get_byte(3, B1)] ^ MD[29];
- out[14] = SD[get_byte(3, B2)] ^ MD[30];
- out[15] = SD[get_byte(3, B3)] ^ MD[31];
}
/*
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-01 12:46:34 +0000