?? twofish.java
字號:
sBox[2 * i + 1] = MDS[1][(P[P_11][b1] & 0xFF) ^ b1(k0)]; sBox[0x200 + 2 * i] = MDS[2][(P[P_21][b2] & 0xFF) ^ b2(k0)]; sBox[0x200 + 2 * i + 1] = MDS[3][(P[P_31][b3] & 0xFF) ^ b3(k0)]; break; case 0: // same as 4 b0 = (P[P_04][b0] & 0xFF) ^ b0(k3); b1 = (P[P_14][b1] & 0xFF) ^ b1(k3); b2 = (P[P_24][b2] & 0xFF) ^ b2(k3); b3 = (P[P_34][b3] & 0xFF) ^ b3(k3); case 3: b0 = (P[P_03][b0] & 0xFF) ^ b0(k2); b1 = (P[P_13][b1] & 0xFF) ^ b1(k2); b2 = (P[P_23][b2] & 0xFF) ^ b2(k2); b3 = (P[P_33][b3] & 0xFF) ^ b3(k2); case 2: // 128-bit keys sBox[2 * i] = MDS[0][(P[P_01][(P[P_02][b0] & 0xFF) ^ b0(k1)] & 0xFF) ^ b0(k0)]; sBox[2 * i + 1] = MDS[1][(P[P_11][(P[P_12][b1] & 0xFF) ^ b1(k1)] & 0xFF) ^ b1(k0)]; sBox[0x200 + 2 * i] = MDS[2][(P[P_21][(P[P_22][b2] & 0xFF) ^ b2(k1)] & 0xFF) ^ b2(k0)]; sBox[0x200 + 2 * i + 1] = MDS[3][(P[P_31][(P[P_32][b3] & 0xFF) ^ b3(k1)] & 0xFF) ^ b3(k0)]; } } if (DEBUG && debuglevel > 7) { System.out.println("S-box[]:"); for (i = 0; i < 64; i++) { for (j = 0; j < 4; j++) { System.out.print("0x" + Util.toString(sBox[i * 4 + j]) + ", "); } System.out.println(); } System.out.println(); for (i = 0; i < 64; i++) { for (j = 0; j < 4; j++) { System.out.print("0x" + Util.toString(sBox[256 + i * 4 + j]) + ", "); } System.out.println(); } System.out.println(); for (i = 0; i < 64; i++) { for (j = 0; j < 4; j++) { System.out.print("0x" + Util.toString(sBox[512 + i * 4 + j]) + ", "); } System.out.println(); } System.out.println(); for (i = 0; i < 64; i++) { for (j = 0; j < 4; j++) { System.out.print("0x" + Util.toString(sBox[768 + i * 4 + j]) + ", "); } System.out.println(); } System.out.println(); System.out.println("User (odd, even) keys --> S-Box keys:"); for (i = 0; i < k64Cnt; i++) { System.out.println("0x" + Util.toString(k32o[i]) + " 0x" + Util.toString(k32e[i]) + " --> 0x" + Util.toString(sBoxKey[k64Cnt - 1 - i])); } System.out.println(); System.out.println("Round keys:"); for (i = 0; i < ROUND_SUBKEYS + 2 * ROUNDS; i += 2) { System.out.println("0x" + Util.toString(subKeys[i]) + " 0x" + Util.toString(subKeys[i + 1])); } System.out.println(); } return new Object[] { sBox, subKeys }; } public void encrypt(byte[] in, int inOffset, byte[] out, int outOffset, Object sessionKey, int bs) { if (bs != DEFAULT_BLOCK_SIZE) { throw new IllegalArgumentException(); } Object[] sk = (Object[]) sessionKey; // extract S-box and session key int[] sBox = (int[]) sk[0]; int[] sKey = (int[]) sk[1]; if (DEBUG && debuglevel > 6) { System.out.println("PT=" + Util.toString(in, inOffset, bs)); } int x0 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x1 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x2 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x3 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; x0 ^= sKey[INPUT_WHITEN]; x1 ^= sKey[INPUT_WHITEN + 1]; x2 ^= sKey[INPUT_WHITEN + 2]; x3 ^= sKey[INPUT_WHITEN + 3]; if (DEBUG && debuglevel > 6) { System.out.println("PTw=" + Util.toString(x0) + Util.toString(x1) + Util.toString(x2) + Util.toString(x3)); } int t0, t1; int k = ROUND_SUBKEYS; for (int R = 0; R < ROUNDS; R += 2) { t0 = Fe32(sBox, x0, 0); t1 = Fe32(sBox, x1, 3); x2 ^= t0 + t1 + sKey[k++]; x2 = x2 >>> 1 | x2 << 31; x3 = x3 << 1 | x3 >>> 31; x3 ^= t0 + 2 * t1 + sKey[k++]; if (DEBUG && debuglevel > 6) { System.out.println("CT" + (R) + "=" + Util.toString(x0) + Util.toString(x1) + Util.toString(x2) + Util.toString(x3)); } t0 = Fe32(sBox, x2, 0); t1 = Fe32(sBox, x3, 3); x0 ^= t0 + t1 + sKey[k++]; x0 = x0 >>> 1 | x0 << 31; x1 = x1 << 1 | x1 >>> 31; x1 ^= t0 + 2 * t1 + sKey[k++]; if (DEBUG && debuglevel > 6) { System.out.println("CT" + (R + 1) + "=" + Util.toString(x0) + Util.toString(x1) + Util.toString(x2) + Util.toString(x3)); } } x2 ^= sKey[OUTPUT_WHITEN]; x3 ^= sKey[OUTPUT_WHITEN + 1]; x0 ^= sKey[OUTPUT_WHITEN + 2]; x1 ^= sKey[OUTPUT_WHITEN + 3]; if (DEBUG && debuglevel > 6) { System.out.println("CTw=" + Util.toString(x0) + Util.toString(x1) + Util.toString(x2) + Util.toString(x3)); } out[outOffset++] = (byte) x2; out[outOffset++] = (byte) (x2 >>> 8); out[outOffset++] = (byte) (x2 >>> 16); out[outOffset++] = (byte) (x2 >>> 24); out[outOffset++] = (byte) x3; out[outOffset++] = (byte) (x3 >>> 8); out[outOffset++] = (byte) (x3 >>> 16); out[outOffset++] = (byte) (x3 >>> 24); out[outOffset++] = (byte) x0; out[outOffset++] = (byte) (x0 >>> 8); out[outOffset++] = (byte) (x0 >>> 16); out[outOffset++] = (byte) (x0 >>> 24); out[outOffset++] = (byte) x1; out[outOffset++] = (byte) (x1 >>> 8); out[outOffset++] = (byte) (x1 >>> 16); out[outOffset] = (byte) (x1 >>> 24); if (DEBUG && debuglevel > 6) { System.out.println("CT=" + Util.toString(out, outOffset - 15, 16)); System.out.println(); } } public void decrypt(byte[] in, int inOffset, byte[] out, int outOffset, Object sessionKey, int bs) { if (bs != DEFAULT_BLOCK_SIZE) { throw new IllegalArgumentException(); } Object[] sk = (Object[]) sessionKey; // extract S-box and session key int[] sBox = (int[]) sk[0]; int[] sKey = (int[]) sk[1]; if (DEBUG && debuglevel > 6) { System.out.println("CT=" + Util.toString(in, inOffset, bs)); } int x2 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x3 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x0 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; int x1 = (in[inOffset++] & 0xFF) | (in[inOffset++] & 0xFF) << 8 | (in[inOffset++] & 0xFF) << 16 | (in[inOffset++] & 0xFF) << 24; x2 ^= sKey[OUTPUT_WHITEN]; x3 ^= sKey[OUTPUT_WHITEN + 1]; x0 ^= sKey[OUTPUT_WHITEN + 2]; x1 ^= sKey[OUTPUT_WHITEN + 3]; if (DEBUG && debuglevel > 6) { System.out.println("CTw=" + Util.toString(x2) + Util.toString(x3) + Util.toString(x0) + Util.toString(x1)); } int k = ROUND_SUBKEYS + 2 * ROUNDS - 1; int t0, t1; for (int R = 0; R < ROUNDS; R += 2) { t0 = Fe32(sBox, x2, 0); t1 = Fe32(sBox, x3, 3); x1 ^= t0 + 2 * t1 + sKey[k--]; x1 = x1 >>> 1 | x1 << 31; x0 = x0 << 1 | x0 >>> 31; x0 ^= t0 + t1 + sKey[k--]; if (DEBUG && debuglevel > 6) { System.out.println("PT" + (ROUNDS - R) + "=" + Util.toString(x2) + Util.toString(x3) + Util.toString(x0) + Util.toString(x1)); } t0 = Fe32(sBox, x0, 0); t1 = Fe32(sBox, x1, 3); x3 ^= t0 + 2 * t1 + sKey[k--]; x3 = x3 >>> 1 | x3 << 31; x2 = x2 << 1 | x2 >>> 31; x2 ^= t0 + t1 + sKey[k--]; if (DEBUG && debuglevel > 6) { System.out.println("PT" + (ROUNDS - R - 1) + "=" + Util.toString(x2) + Util.toString(x3) + Util.toString(x0) + Util.toString(x1)); } } x0 ^= sKey[INPUT_WHITEN]; x1 ^= sKey[INPUT_WHITEN + 1]; x2 ^= sKey[INPUT_WHITEN + 2]; x3 ^= sKey[INPUT_WHITEN + 3]; if (DEBUG && debuglevel > 6) { System.out.println("PTw=" + Util.toString(x2) + Util.toString(x3) + Util.toString(x0) + Util.toString(x1)); } out[outOffset++] = (byte) x0; out[outOffset++] = (byte) (x0 >>> 8); out[outOffset++] = (byte) (x0 >>> 16); out[outOffset++] = (byte) (x0 >>> 24); out[outOffset++] = (byte) x1; out[outOffset++] = (byte) (x1 >>> 8); out[outOffset++] = (byte) (x1 >>> 16); out[outOffset++] = (byte) (x1 >>> 24); out[outOffset++] = (byte) x2; out[outOffset++] = (byte) (x2 >>> 8); out[outOffset++] = (byte) (x2 >>> 16); out[outOffset++] = (byte) (x2 >>> 24); out[outOffset++] = (byte) x3; out[outOffset++] = (byte) (x3 >>> 8); out[outOffset++] = (byte) (x3 >>> 16); out[outOffset] = (byte) (x3 >>> 24); if (DEBUG && debuglevel > 6) { System.out.println("PT=" + Util.toString(out, outOffset - 15, 16)); System.out.println(); } } public boolean selfTest() { if (valid == null) { boolean result = super.selfTest(); // do symmetry tests if (result) { result = testKat(KAT_KEY, KAT_CT); } valid = new Boolean(result); } return valid.booleanValue(); }}?? 快捷鍵說明
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