blowfishcipher.java

Java version of ABC/HR comparator v0.5. by schnofler. Runs on Sun JRE 1.5 or later

	private final int[] sbox3 = {
		0x3a39ce37, 0xd3faf5cf, 0xabc27737, 0x5ac52d1b, 0x5cb0679e, 0x4fa33742,
		0xd3822740, 0x99bc9bbe, 0xd5118e9d, 0xbf0f7315, 0xd62d1c7e, 0xc700c47b,
		0xb78c1b6b, 0x21a19045, 0xb26eb1be, 0x6a366eb4, 0x5748ab2f, 0xbc946e79,
		0xc6a376d2, 0x6549c2c8, 0x530ff8ee, 0x468dde7d, 0xd5730a1d, 0x4cd04dc6,
		0x2939bbdb, 0xa9ba4650, 0xac9526e8, 0xbe5ee304, 0xa1fad5f0, 0x6a2d519a,
		0x63ef8ce2, 0x9a86ee22, 0xc089c2b8, 0x43242ef6, 0xa51e03aa, 0x9cf2d0a4,
		0x83c061ba, 0x9be96a4d, 0x8fe51550, 0xba645bd6, 0x2826a2f9, 0xa73a3ae1,
		0x4ba99586, 0xef5562e9, 0xc72fefd3, 0xf752f7da, 0x3f046f69, 0x77fa0a59,
		0x80e4a915, 0x87b08601, 0x9b09e6ad, 0x3b3ee593, 0xe990fd5a, 0x9e34d797,
		0x2cf0b7d9, 0x022b8b51, 0x96d5ac3a, 0x017da67d, 0xd1cf3ed6, 0x7c7d2d28,
		0x1f9f25cf, 0xadf2b89b, 0x5ad6b472, 0x5a88f54c, 0xe029ac71, 0xe019a5e6,
		0x47b0acfd, 0xed93fa9b, 0xe8d3c48d, 0x283b57cc, 0xf8d56629, 0x79132e28,
		0x785f0191, 0xed756055, 0xf7960e44, 0xe3d35e8c, 0x15056dd4, 0x88f46dba,
		0x03a16125, 0x0564f0bd, 0xc3eb9e15, 0x3c9057a2, 0x97271aec, 0xa93a072a,
		0x1b3f6d9b, 0x1e6321f5, 0xf59c66fb, 0x26dcf319, 0x7533d928, 0xb155fdf5,
		0x03563482, 0x8aba3cbb, 0x28517711, 0xc20ad9f8, 0xabcc5167, 0xccad925f,
		0x4de81751, 0x3830dc8e, 0x379d5862, 0x9320f991, 0xea7a90c2, 0xfb3e7bce,
		0x5121ce64, 0x774fbe32, 0xa8b6e37e, 0xc3293d46, 0x48de5369, 0x6413e680,
		0xa2ae0810, 0xdd6db224, 0x69852dfd, 0x09072166, 0xb39a460a, 0x6445c0dd,
		0x586cdecf, 0x1c20c8ae, 0x5bbef7dd, 0x1b588d40, 0xccd2017f, 0x6bb4e3bb,
		0xdda26a7e, 0x3a59ff45, 0x3e350a44, 0xbcb4cdd5, 0x72eacea8, 0xfa6484bb,
		0x8d6612ae, 0xbf3c6f47, 0xd29be463, 0x542f5d9e, 0xaec2771b, 0xf64e6370,
		0x740e0d8d, 0xe75b1357, 0xf8721671, 0xaf537d5d, 0x4040cb08, 0x4eb4e2cc,
		0x34d2466a, 0x0115af84, 0xe1b00428, 0x95983a1d, 0x06b89fb4, 0xce6ea048,
		0x6f3f3b82, 0x3520ab82, 0x011a1d4b, 0x277227f8, 0x611560b1, 0xe7933fdc,
		0xbb3a792b, 0x344525bd, 0xa08839e1, 0x51ce794b, 0x2f32c9b7, 0xa01fbac9,
		0xe01cc87e, 0xbcc7d1f6, 0xcf0111c3, 0xa1e8aac7, 0x1a908749, 0xd44fbd9a,
		0xd0dadecb, 0xd50ada38, 0x0339c32a, 0xc6913667, 0x8df9317c, 0xe0b12b4f,
		0xf79e59b7, 0x43f5bb3a, 0xf2d519ff, 0x27d9459c, 0xbf97222c, 0x15e6fc2a,
		0x0f91fc71, 0x9b941525, 0xfae59361, 0xceb69ceb, 0xc2a86459, 0x12baa8d1,
		0xb6c1075e, 0xe3056a0c, 0x10d25065, 0xcb03a442, 0xe0ec6e0e, 0x1698db3b,
		0x4c98a0be, 0x3278e964, 0x9f1f9532, 0xe0d392df, 0xd3a0342b, 0x8971f21e,
		0x1b0a7441, 0x4ba3348c, 0xc5be7120, 0xc37632d8, 0xdf359f8d, 0x9b992f2e,
		0xe60b6f47, 0x0fe3f11d, 0xe54cda54, 0x1edad891, 0xce6279cf, 0xcd3e7e6f,
		0x1618b166, 0xfd2c1d05, 0x848fd2c5, 0xf6fb2299, 0xf523f357, 0xa6327623,
		0x93a83531, 0x56cccd02, 0xacf08162, 0x5a75ebb5, 0x6e163697, 0x88d273cc,
		0xde966292, 0x81b949d0, 0x4c50901b, 0x71c65614, 0xe6c6c7bd, 0x327a140a,
		0x45e1d006, 0xc3f27b9a, 0xc9aa53fd, 0x62a80f00, 0xbb25bfe2, 0x35bdd2f6,
		0x71126905, 0xb2040222, 0xb6cbcf7c, 0xcd769c2b, 0x53113ec0, 0x1640e3d3,
		0x38abbd60, 0x2547adf0, 0xba38209c, 0xf746ce76, 0x77afa1c5, 0x20756060,
		0x85cbfe4e, 0x8ae88dd8, 0x7aaaf9b0, 0x4cf9aa7e, 0x1948c25c, 0x02fb8a8c,
		0x01c36ae4, 0xd6ebe1f9, 0x90d4f869, 0xa65cdea0, 0x3f09252d, 0xc208e69f,
		0xb74e6132, 0xce77e25b, 0x578fdfe3, 0x3ac372e6
	};

	private final int[] parray = {
		0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344, 0xa4093822, 0x299f31d0,
		0x082efa98, 0xec4e6c89, 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
		0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917, 0x9216d5d9, 0x8979fb1b
	};

	public BlowfishCipher(int[] key) {
		int len=key.length>14?14:key.length;
		for(int i=0;i<18;i++) {
			parray[i]=parray[i] ^ key[i%len];
		}
		int[] b=new int[2];
		b[0]=0;
		b[1]=0;
		for(int i=0;i<18;i+=2) {
			b=encryptInts(b);
			parray[i]=b[0];
			parray[i+1]=b[1];
		}
		for(int i=0;i<256;i+=2) {
			b=encryptInts(b);
			sbox0[i]=b[0];
			sbox0[i+1]=b[1];
		}
		for(int i=0;i<256;i+=2) {
			b=encryptInts(b);
			sbox1[i]=b[0];
			sbox1[i+1]=b[1];
		}
		for(int i=0;i<256;i+=2) {
			b=encryptInts(b);
			sbox2[i]=b[0];
			sbox2[i+1]=b[1];
		}
		for(int i=0;i<256;i+=2) {
			b=encryptInts(b);
			sbox3[i]=b[0];
			sbox3[i+1]=b[1];
		}
	}

	private int[] decryptInts(int[] data) {
		int[] result=new int[data.length];
		int xL,xR,fxL,temp;
		int i=0;
		while(i<data.length) {
			xL=data[i];
			xR=data[i+1];
			for(int j=17;j>1;j--) {
				xL=xL ^ parray[j];
				fxL=((sbox0[(xL >>> 24) & 0xFF]+sbox1[(xL>>>16) & 0xFF])^sbox2[(xL>>>8) & 0xFF])+sbox3[xL & 0x000000FF];
				xR=fxL^xR;
				temp=xR;xR=xL;xL=temp;
			}
			temp=xR;xR=xL;xL=temp;
			xR=xR^parray[1];
			xL=xL^parray[0];
			result[i]=xL;
			result[i+1]=xR;
			i+=2;
		}
		return result;
	}

	private int[] encryptInts(int[] data) {
		int [] result=new int[data.length];
		int xL,xR,fxL,temp;
		int i=0;
		while(i<data.length) {
			xL=data[i];
			xR=data[i+1];
			for(int j=0;j<16;j++) {
				xL=xL ^ parray[j];
				fxL=((sbox0[(xL >>> 24) & 0xFF]+sbox1[(xL>>>16) & 0xFF])^sbox2[(xL>>>8) & 0xFF])+sbox3[xL & 0x000000FF];
				xR=fxL^xR;
				temp=xR;xR=xL;xL=temp;
			}
			temp=xR;xR=xL;xL=temp;
			xR=xR^parray[16];
			xL=xL^parray[17];
			result[i]=xL;
			result[i+1]=xR;
			i+=2;
		}
		return result;
	}

	public byte[] encrypt(byte[] data) {
		data=Util.pad(data,8);
		return Util.intsToBytes(encryptInts(Util.bytesToInts(data)));
	}

	public byte[] decrypt(byte[] data) throws IllegalArgumentException {
		return Util.unpad(Util.intsToBytes(decryptInts(Util.bytesToInts(data))));
	}
}