diff options
| -rw-r--r-- | crypto/camellia.c | 218 |
1 files changed, 84 insertions, 134 deletions
diff --git a/crypto/camellia.c b/crypto/camellia.c index 86af42e92916..493fee7e0a8b 100644 --- a/crypto/camellia.c +++ b/crypto/camellia.c @@ -393,8 +393,92 @@ static const u32 camellia_sp4404[256] = { static void camellia_setup_tail(u32 *subkey, u32 *subL, u32 *subR, int max) { u32 dw, tl, tr; + u32 kw4l, kw4r; int i; + /* absorb kw2 to other subkeys */ + /* round 2 */ + subL[3] ^= subL[1]; subR[3] ^= subR[1]; + /* round 4 */ + subL[5] ^= subL[1]; subR[5] ^= subR[1]; + /* round 6 */ + subL[7] ^= subL[1]; subR[7] ^= subR[1]; + subL[1] ^= subR[1] & ~subR[9]; + dw = subL[1] & subL[9], + subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */ + /* round 8 */ + subL[11] ^= subL[1]; subR[11] ^= subR[1]; + /* round 10 */ + subL[13] ^= subL[1]; subR[13] ^= subR[1]; + /* round 12 */ + subL[15] ^= subL[1]; subR[15] ^= subR[1]; + subL[1] ^= subR[1] & ~subR[17]; + dw = subL[1] & subL[17], + subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */ + /* round 14 */ + subL[19] ^= subL[1]; subR[19] ^= subR[1]; + /* round 16 */ + subL[21] ^= subL[1]; subR[21] ^= subR[1]; + /* round 18 */ + subL[23] ^= subL[1]; subR[23] ^= subR[1]; + if (max == 24) { + /* kw3 */ + subL[24] ^= subL[1]; subR[24] ^= subR[1]; + + /* absorb kw4 to other subkeys */ + kw4l = subL[25]; kw4r = subR[25]; + } else { + subL[1] ^= subR[1] & ~subR[25]; + dw = subL[1] & subL[25], + subR[1] ^= ROL1(dw); /* modified for FLinv(kl6) */ + /* round 20 */ + subL[27] ^= subL[1]; subR[27] ^= subR[1]; + /* round 22 */ + subL[29] ^= subL[1]; subR[29] ^= subR[1]; + /* round 24 */ + subL[31] ^= subL[1]; subR[31] ^= subR[1]; + /* kw3 */ + subL[32] ^= subL[1]; subR[32] ^= subR[1]; + + /* absorb kw4 to other subkeys */ + kw4l = subL[33]; kw4r = subR[33]; + /* round 23 */ + subL[30] ^= kw4l; subR[30] ^= kw4r; + /* round 21 */ + subL[28] ^= kw4l; subR[28] ^= kw4r; + /* round 19 */ + subL[26] ^= kw4l; subR[26] ^= kw4r; + kw4l ^= kw4r & ~subR[24]; + dw = kw4l & subL[24], + kw4r ^= ROL1(dw); /* modified for FL(kl5) */ + } + /* round 17 */ + subL[22] ^= kw4l; subR[22] ^= kw4r; + /* round 15 */ + subL[20] ^= kw4l; subR[20] ^= kw4r; + /* round 13 */ + subL[18] ^= kw4l; subR[18] ^= kw4r; + kw4l ^= kw4r & ~subR[16]; + dw = kw4l & subL[16], + kw4r ^= ROL1(dw); /* modified for FL(kl3) */ + /* round 11 */ + subL[14] ^= kw4l; subR[14] ^= kw4r; + /* round 9 */ + subL[12] ^= kw4l; subR[12] ^= kw4r; + /* round 7 */ + subL[10] ^= kw4l; subR[10] ^= kw4r; + kw4l ^= kw4r & ~subR[8]; + dw = kw4l & subL[8], + kw4r ^= ROL1(dw); /* modified for FL(kl1) */ + /* round 5 */ + subL[6] ^= kw4l; subR[6] ^= kw4r; + /* round 3 */ + subL[4] ^= kw4l; subR[4] ^= kw4r; + /* round 1 */ + subL[2] ^= kw4l; subR[2] ^= kw4r; + /* kw1 */ + subL[0] ^= kw4l; subR[0] ^= kw4r; + /* key XOR is end of F-function */ SUBKEY_L(0) = subL[0] ^ subL[2];/* kw1 */ SUBKEY_R(0) = subR[0] ^ subR[2]; @@ -509,7 +593,6 @@ static void camellia_setup128(const unsigned char *key, u32 *subkey) { u32 kll, klr, krl, krr; u32 il, ir, t0, t1, w0, w1; - u32 kw4l, kw4r, dw; u32 subL[26]; u32 subR[26]; @@ -609,63 +692,6 @@ static void camellia_setup128(const unsigned char *key, u32 *subkey) subL[24] = kll; subR[24] = klr; subL[25] = krl; subR[25] = krr; - /* absorb kw2 to other subkeys */ - /* round 2 */ - subL[3] ^= subL[1]; subR[3] ^= subR[1]; - /* round 4 */ - subL[5] ^= subL[1]; subR[5] ^= subR[1]; - /* round 6 */ - subL[7] ^= subL[1]; subR[7] ^= subR[1]; - subL[1] ^= subR[1] & ~subR[9]; - dw = subL[1] & subL[9], - subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */ - /* round 8 */ - subL[11] ^= subL[1]; subR[11] ^= subR[1]; - /* round 10 */ - subL[13] ^= subL[1]; subR[13] ^= subR[1]; - /* round 12 */ - subL[15] ^= subL[1]; subR[15] ^= subR[1]; - subL[1] ^= subR[1] & ~subR[17]; - dw = subL[1] & subL[17], - subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */ - /* round 14 */ - subL[19] ^= subL[1]; subR[19] ^= subR[1]; - /* round 16 */ - subL[21] ^= subL[1]; subR[21] ^= subR[1]; - /* round 18 */ - subL[23] ^= subL[1]; subR[23] ^= subR[1]; - /* kw3 */ - subL[24] ^= subL[1]; subR[24] ^= subR[1]; - - /* absorb kw4 to other subkeys */ - kw4l = subL[25]; kw4r = subR[25]; - /* round 17 */ - subL[22] ^= kw4l; subR[22] ^= kw4r; - /* round 15 */ - subL[20] ^= kw4l; subR[20] ^= kw4r; - /* round 13 */ - subL[18] ^= kw4l; subR[18] ^= kw4r; - kw4l ^= kw4r & ~subR[16]; - dw = kw4l & subL[16], - kw4r ^= ROL1(dw); /* modified for FL(kl3) */ - /* round 11 */ - subL[14] ^= kw4l; subR[14] ^= kw4r; - /* round 9 */ - subL[12] ^= kw4l; subR[12] ^= kw4r; - /* round 7 */ - subL[10] ^= kw4l; subR[10] ^= kw4r; - kw4l ^= kw4r & ~subR[8]; - dw = kw4l & subL[8], - kw4r ^= ROL1(dw); /* modified for FL(kl1) */ - /* round 5 */ - subL[6] ^= kw4l; subR[6] ^= kw4r; - /* round 3 */ - subL[4] ^= kw4l; subR[4] ^= kw4r; - /* round 1 */ - subL[2] ^= kw4l; subR[2] ^= kw4r; - /* kw1 */ - subL[0] ^= kw4l; subR[0] ^= kw4r; - camellia_setup_tail(subkey, subL, subR, 24); } @@ -674,7 +700,6 @@ static void camellia_setup256(const unsigned char *key, u32 *subkey) u32 kll, klr, krl, krr; /* left half of key */ u32 krll, krlr, krrl, krrr; /* right half of key */ u32 il, ir, t0, t1, w0, w1; /* temporary variables */ - u32 kw4l, kw4r, dw; u32 subL[34]; u32 subR[34]; @@ -816,81 +841,6 @@ static void camellia_setup256(const unsigned char *key, u32 *subkey) /* kw4 */ subL[33] = krrl; subR[33] = krrr; - /* absorb kw2 to other subkeys */ - /* round 2 */ - subL[3] ^= subL[1]; subR[3] ^= subR[1]; - /* round 4 */ - subL[5] ^= subL[1]; subR[5] ^= subR[1]; - /* round 6 */ - subL[7] ^= subL[1]; subR[7] ^= subR[1]; - subL[1] ^= subR[1] & ~subR[9]; - dw = subL[1] & subL[9], - subR[1] ^= ROL1(dw); /* modified for FLinv(kl2) */ - /* round 8 */ - subL[11] ^= subL[1]; subR[11] ^= subR[1]; - /* round 10 */ - subL[13] ^= subL[1]; subR[13] ^= subR[1]; - /* round 12 */ - subL[15] ^= subL[1]; subR[15] ^= subR[1]; - subL[1] ^= subR[1] & ~subR[17]; - dw = subL[1] & subL[17], - subR[1] ^= ROL1(dw); /* modified for FLinv(kl4) */ - /* round 14 */ - subL[19] ^= subL[1]; subR[19] ^= subR[1]; - /* round 16 */ - subL[21] ^= subL[1]; subR[21] ^= subR[1]; - /* round 18 */ - subL[23] ^= subL[1]; subR[23] ^= subR[1]; - subL[1] ^= subR[1] & ~subR[25]; - dw = subL[1] & subL[25], - subR[1] ^= ROL1(dw); /* modified for FLinv(kl6) */ - /* round 20 */ - subL[27] ^= subL[1]; subR[27] ^= subR[1]; - /* round 22 */ - subL[29] ^= subL[1]; subR[29] ^= subR[1]; - /* round 24 */ - subL[31] ^= subL[1]; subR[31] ^= subR[1]; - /* kw3 */ - subL[32] ^= subL[1]; subR[32] ^= subR[1]; - - /* absorb kw4 to other subkeys */ - kw4l = subL[33]; kw4r = subR[33]; - /* round 23 */ - subL[30] ^= kw4l; subR[30] ^= kw4r; - /* round 21 */ - subL[28] ^= kw4l; subR[28] ^= kw4r; - /* round 19 */ - subL[26] ^= kw4l; subR[26] ^= kw4r; - kw4l ^= kw4r & ~subR[24]; - dw = kw4l & subL[24], - kw4r ^= ROL1(dw); /* modified for FL(kl5) */ - /* round 17 */ - subL[22] ^= kw4l; subR[22] ^= kw4r; - /* round 15 */ - subL[20] ^= kw4l; subR[20] ^= kw4r; - /* round 13 */ - subL[18] ^= kw4l; subR[18] ^= kw4r; - kw4l ^= kw4r & ~subR[16]; - dw = kw4l & subL[16], - kw4r ^= ROL1(dw); /* modified for FL(kl3) */ - /* round 11 */ - subL[14] ^= kw4l; subR[14] ^= kw4r; - /* round 9 */ - subL[12] ^= kw4l; subR[12] ^= kw4r; - /* round 7 */ - subL[10] ^= kw4l; subR[10] ^= kw4r; - kw4l ^= kw4r & ~subR[8]; - dw = kw4l & subL[8], - kw4r ^= ROL1(dw); /* modified for FL(kl1) */ - /* round 5 */ - subL[6] ^= kw4l; subR[6] ^= kw4r; - /* round 3 */ - subL[4] ^= kw4l; subR[4] ^= kw4r; - /* round 1 */ - subL[2] ^= kw4l; subR[2] ^= kw4r; - /* kw1 */ - subL[0] ^= kw4l; subR[0] ^= kw4r; - camellia_setup_tail(subkey, subL, subR, 32); } |