| package org.bouncycastle.crypto.engines; |
| |
| import org.bouncycastle.crypto.BlockCipher; |
| import org.bouncycastle.crypto.CipherParameters; |
| import org.bouncycastle.crypto.DataLengthException; |
| import org.bouncycastle.crypto.OutputLengthException; |
| import org.bouncycastle.crypto.params.KeyParameter; |
| import org.bouncycastle.util.encoders.Hex; |
| |
| /** |
| * RFC 5794. |
| * |
| * ARIA is a 128-bit block cipher with 128-, 192-, and 256-bit keys. |
| */ |
| public class ARIAEngine |
| implements BlockCipher |
| { |
| private static final byte[][] C = { Hex.decode("517cc1b727220a94fe13abe8fa9a6ee0"), |
| Hex.decode("6db14acc9e21c820ff28b1d5ef5de2b0"), Hex.decode("db92371d2126e9700324977504e8c90e") }; |
| |
| private static final byte[] SB1_sbox = { (byte)0x63, (byte)0x7c, (byte)0x77, (byte)0x7b, (byte)0xf2, (byte)0x6b, |
| (byte)0x6f, (byte)0xc5, (byte)0x30, (byte)0x01, (byte)0x67, (byte)0x2b, (byte)0xfe, (byte)0xd7, (byte)0xab, |
| (byte)0x76, (byte)0xca, (byte)0x82, (byte)0xc9, (byte)0x7d, (byte)0xfa, (byte)0x59, (byte)0x47, (byte)0xf0, |
| (byte)0xad, (byte)0xd4, (byte)0xa2, (byte)0xaf, (byte)0x9c, (byte)0xa4, (byte)0x72, (byte)0xc0, (byte)0xb7, |
| (byte)0xfd, (byte)0x93, (byte)0x26, (byte)0x36, (byte)0x3f, (byte)0xf7, (byte)0xcc, (byte)0x34, (byte)0xa5, |
| (byte)0xe5, (byte)0xf1, (byte)0x71, (byte)0xd8, (byte)0x31, (byte)0x15, (byte)0x04, (byte)0xc7, (byte)0x23, |
| (byte)0xc3, (byte)0x18, (byte)0x96, (byte)0x05, (byte)0x9a, (byte)0x07, (byte)0x12, (byte)0x80, (byte)0xe2, |
| (byte)0xeb, (byte)0x27, (byte)0xb2, (byte)0x75, (byte)0x09, (byte)0x83, (byte)0x2c, (byte)0x1a, (byte)0x1b, |
| (byte)0x6e, (byte)0x5a, (byte)0xa0, (byte)0x52, (byte)0x3b, (byte)0xd6, (byte)0xb3, (byte)0x29, (byte)0xe3, |
| (byte)0x2f, (byte)0x84, (byte)0x53, (byte)0xd1, (byte)0x00, (byte)0xed, (byte)0x20, (byte)0xfc, (byte)0xb1, |
| (byte)0x5b, (byte)0x6a, (byte)0xcb, (byte)0xbe, (byte)0x39, (byte)0x4a, (byte)0x4c, (byte)0x58, (byte)0xcf, |
| (byte)0xd0, (byte)0xef, (byte)0xaa, (byte)0xfb, (byte)0x43, (byte)0x4d, (byte)0x33, (byte)0x85, (byte)0x45, |
| (byte)0xf9, (byte)0x02, (byte)0x7f, (byte)0x50, (byte)0x3c, (byte)0x9f, (byte)0xa8, (byte)0x51, (byte)0xa3, |
| (byte)0x40, (byte)0x8f, (byte)0x92, (byte)0x9d, (byte)0x38, (byte)0xf5, (byte)0xbc, (byte)0xb6, (byte)0xda, |
| (byte)0x21, (byte)0x10, (byte)0xff, (byte)0xf3, (byte)0xd2, (byte)0xcd, (byte)0x0c, (byte)0x13, (byte)0xec, |
| (byte)0x5f, (byte)0x97, (byte)0x44, (byte)0x17, (byte)0xc4, (byte)0xa7, (byte)0x7e, (byte)0x3d, (byte)0x64, |
| (byte)0x5d, (byte)0x19, (byte)0x73, (byte)0x60, (byte)0x81, (byte)0x4f, (byte)0xdc, (byte)0x22, (byte)0x2a, |
| (byte)0x90, (byte)0x88, (byte)0x46, (byte)0xee, (byte)0xb8, (byte)0x14, (byte)0xde, (byte)0x5e, (byte)0x0b, |
| (byte)0xdb, (byte)0xe0, (byte)0x32, (byte)0x3a, (byte)0x0a, (byte)0x49, (byte)0x06, (byte)0x24, (byte)0x5c, |
| (byte)0xc2, (byte)0xd3, (byte)0xac, (byte)0x62, (byte)0x91, (byte)0x95, (byte)0xe4, (byte)0x79, (byte)0xe7, |
| (byte)0xc8, (byte)0x37, (byte)0x6d, (byte)0x8d, (byte)0xd5, (byte)0x4e, (byte)0xa9, (byte)0x6c, (byte)0x56, |
| (byte)0xf4, (byte)0xea, (byte)0x65, (byte)0x7a, (byte)0xae, (byte)0x08, (byte)0xba, (byte)0x78, (byte)0x25, |
| (byte)0x2e, (byte)0x1c, (byte)0xa6, (byte)0xb4, (byte)0xc6, (byte)0xe8, (byte)0xdd, (byte)0x74, (byte)0x1f, |
| (byte)0x4b, (byte)0xbd, (byte)0x8b, (byte)0x8a, (byte)0x70, (byte)0x3e, (byte)0xb5, (byte)0x66, (byte)0x48, |
| (byte)0x03, (byte)0xf6, (byte)0x0e, (byte)0x61, (byte)0x35, (byte)0x57, (byte)0xb9, (byte)0x86, (byte)0xc1, |
| (byte)0x1d, (byte)0x9e, (byte)0xe1, (byte)0xf8, (byte)0x98, (byte)0x11, (byte)0x69, (byte)0xd9, (byte)0x8e, |
| (byte)0x94, (byte)0x9b, (byte)0x1e, (byte)0x87, (byte)0xe9, (byte)0xce, (byte)0x55, (byte)0x28, (byte)0xdf, |
| (byte)0x8c, (byte)0xa1, (byte)0x89, (byte)0x0d, (byte)0xbf, (byte)0xe6, (byte)0x42, (byte)0x68, (byte)0x41, |
| (byte)0x99, (byte)0x2d, (byte)0x0f, (byte)0xb0, (byte)0x54, (byte)0xbb, (byte)0x16 }; |
| |
| private static final byte[] SB2_sbox = { (byte)0xe2, (byte)0x4e, (byte)0x54, (byte)0xfc, (byte)0x94, (byte)0xc2, |
| (byte)0x4a, (byte)0xcc, (byte)0x62, (byte)0x0d, (byte)0x6a, (byte)0x46, (byte)0x3c, (byte)0x4d, (byte)0x8b, |
| (byte)0xd1, (byte)0x5e, (byte)0xfa, (byte)0x64, (byte)0xcb, (byte)0xb4, (byte)0x97, (byte)0xbe, (byte)0x2b, |
| (byte)0xbc, (byte)0x77, (byte)0x2e, (byte)0x03, (byte)0xd3, (byte)0x19, (byte)0x59, (byte)0xc1, (byte)0x1d, |
| (byte)0x06, (byte)0x41, (byte)0x6b, (byte)0x55, (byte)0xf0, (byte)0x99, (byte)0x69, (byte)0xea, (byte)0x9c, |
| (byte)0x18, (byte)0xae, (byte)0x63, (byte)0xdf, (byte)0xe7, (byte)0xbb, (byte)0x00, (byte)0x73, (byte)0x66, |
| (byte)0xfb, (byte)0x96, (byte)0x4c, (byte)0x85, (byte)0xe4, (byte)0x3a, (byte)0x09, (byte)0x45, (byte)0xaa, |
| (byte)0x0f, (byte)0xee, (byte)0x10, (byte)0xeb, (byte)0x2d, (byte)0x7f, (byte)0xf4, (byte)0x29, (byte)0xac, |
| (byte)0xcf, (byte)0xad, (byte)0x91, (byte)0x8d, (byte)0x78, (byte)0xc8, (byte)0x95, (byte)0xf9, (byte)0x2f, |
| (byte)0xce, (byte)0xcd, (byte)0x08, (byte)0x7a, (byte)0x88, (byte)0x38, (byte)0x5c, (byte)0x83, (byte)0x2a, |
| (byte)0x28, (byte)0x47, (byte)0xdb, (byte)0xb8, (byte)0xc7, (byte)0x93, (byte)0xa4, (byte)0x12, (byte)0x53, |
| (byte)0xff, (byte)0x87, (byte)0x0e, (byte)0x31, (byte)0x36, (byte)0x21, (byte)0x58, (byte)0x48, (byte)0x01, |
| (byte)0x8e, (byte)0x37, (byte)0x74, (byte)0x32, (byte)0xca, (byte)0xe9, (byte)0xb1, (byte)0xb7, (byte)0xab, |
| (byte)0x0c, (byte)0xd7, (byte)0xc4, (byte)0x56, (byte)0x42, (byte)0x26, (byte)0x07, (byte)0x98, (byte)0x60, |
| (byte)0xd9, (byte)0xb6, (byte)0xb9, (byte)0x11, (byte)0x40, (byte)0xec, (byte)0x20, (byte)0x8c, (byte)0xbd, |
| (byte)0xa0, (byte)0xc9, (byte)0x84, (byte)0x04, (byte)0x49, (byte)0x23, (byte)0xf1, (byte)0x4f, (byte)0x50, |
| (byte)0x1f, (byte)0x13, (byte)0xdc, (byte)0xd8, (byte)0xc0, (byte)0x9e, (byte)0x57, (byte)0xe3, (byte)0xc3, |
| (byte)0x7b, (byte)0x65, (byte)0x3b, (byte)0x02, (byte)0x8f, (byte)0x3e, (byte)0xe8, (byte)0x25, (byte)0x92, |
| (byte)0xe5, (byte)0x15, (byte)0xdd, (byte)0xfd, (byte)0x17, (byte)0xa9, (byte)0xbf, (byte)0xd4, (byte)0x9a, |
| (byte)0x7e, (byte)0xc5, (byte)0x39, (byte)0x67, (byte)0xfe, (byte)0x76, (byte)0x9d, (byte)0x43, (byte)0xa7, |
| (byte)0xe1, (byte)0xd0, (byte)0xf5, (byte)0x68, (byte)0xf2, (byte)0x1b, (byte)0x34, (byte)0x70, (byte)0x05, |
| (byte)0xa3, (byte)0x8a, (byte)0xd5, (byte)0x79, (byte)0x86, (byte)0xa8, (byte)0x30, (byte)0xc6, (byte)0x51, |
| (byte)0x4b, (byte)0x1e, (byte)0xa6, (byte)0x27, (byte)0xf6, (byte)0x35, (byte)0xd2, (byte)0x6e, (byte)0x24, |
| (byte)0x16, (byte)0x82, (byte)0x5f, (byte)0xda, (byte)0xe6, (byte)0x75, (byte)0xa2, (byte)0xef, (byte)0x2c, |
| (byte)0xb2, (byte)0x1c, (byte)0x9f, (byte)0x5d, (byte)0x6f, (byte)0x80, (byte)0x0a, (byte)0x72, (byte)0x44, |
| (byte)0x9b, (byte)0x6c, (byte)0x90, (byte)0x0b, (byte)0x5b, (byte)0x33, (byte)0x7d, (byte)0x5a, (byte)0x52, |
| (byte)0xf3, (byte)0x61, (byte)0xa1, (byte)0xf7, (byte)0xb0, (byte)0xd6, (byte)0x3f, (byte)0x7c, (byte)0x6d, |
| (byte)0xed, (byte)0x14, (byte)0xe0, (byte)0xa5, (byte)0x3d, (byte)0x22, (byte)0xb3, (byte)0xf8, (byte)0x89, |
| (byte)0xde, (byte)0x71, (byte)0x1a, (byte)0xaf, (byte)0xba, (byte)0xb5, (byte)0x81 }; |
| |
| private static final byte[] SB3_sbox = { (byte)0x52, (byte)0x09, (byte)0x6a, (byte)0xd5, (byte)0x30, (byte)0x36, |
| (byte)0xa5, (byte)0x38, (byte)0xbf, (byte)0x40, (byte)0xa3, (byte)0x9e, (byte)0x81, (byte)0xf3, (byte)0xd7, |
| (byte)0xfb, (byte)0x7c, (byte)0xe3, (byte)0x39, (byte)0x82, (byte)0x9b, (byte)0x2f, (byte)0xff, (byte)0x87, |
| (byte)0x34, (byte)0x8e, (byte)0x43, (byte)0x44, (byte)0xc4, (byte)0xde, (byte)0xe9, (byte)0xcb, (byte)0x54, |
| (byte)0x7b, (byte)0x94, (byte)0x32, (byte)0xa6, (byte)0xc2, (byte)0x23, (byte)0x3d, (byte)0xee, (byte)0x4c, |
| (byte)0x95, (byte)0x0b, (byte)0x42, (byte)0xfa, (byte)0xc3, (byte)0x4e, (byte)0x08, (byte)0x2e, (byte)0xa1, |
| (byte)0x66, (byte)0x28, (byte)0xd9, (byte)0x24, (byte)0xb2, (byte)0x76, (byte)0x5b, (byte)0xa2, (byte)0x49, |
| (byte)0x6d, (byte)0x8b, (byte)0xd1, (byte)0x25, (byte)0x72, (byte)0xf8, (byte)0xf6, (byte)0x64, (byte)0x86, |
| (byte)0x68, (byte)0x98, (byte)0x16, (byte)0xd4, (byte)0xa4, (byte)0x5c, (byte)0xcc, (byte)0x5d, (byte)0x65, |
| (byte)0xb6, (byte)0x92, (byte)0x6c, (byte)0x70, (byte)0x48, (byte)0x50, (byte)0xfd, (byte)0xed, (byte)0xb9, |
| (byte)0xda, (byte)0x5e, (byte)0x15, (byte)0x46, (byte)0x57, (byte)0xa7, (byte)0x8d, (byte)0x9d, (byte)0x84, |
| (byte)0x90, (byte)0xd8, (byte)0xab, (byte)0x00, (byte)0x8c, (byte)0xbc, (byte)0xd3, (byte)0x0a, (byte)0xf7, |
| (byte)0xe4, (byte)0x58, (byte)0x05, (byte)0xb8, (byte)0xb3, (byte)0x45, (byte)0x06, (byte)0xd0, (byte)0x2c, |
| (byte)0x1e, (byte)0x8f, (byte)0xca, (byte)0x3f, (byte)0x0f, (byte)0x02, (byte)0xc1, (byte)0xaf, (byte)0xbd, |
| (byte)0x03, (byte)0x01, (byte)0x13, (byte)0x8a, (byte)0x6b, (byte)0x3a, (byte)0x91, (byte)0x11, (byte)0x41, |
| (byte)0x4f, (byte)0x67, (byte)0xdc, (byte)0xea, (byte)0x97, (byte)0xf2, (byte)0xcf, (byte)0xce, (byte)0xf0, |
| (byte)0xb4, (byte)0xe6, (byte)0x73, (byte)0x96, (byte)0xac, (byte)0x74, (byte)0x22, (byte)0xe7, (byte)0xad, |
| (byte)0x35, (byte)0x85, (byte)0xe2, (byte)0xf9, (byte)0x37, (byte)0xe8, (byte)0x1c, (byte)0x75, (byte)0xdf, |
| (byte)0x6e, (byte)0x47, (byte)0xf1, (byte)0x1a, (byte)0x71, (byte)0x1d, (byte)0x29, (byte)0xc5, (byte)0x89, |
| (byte)0x6f, (byte)0xb7, (byte)0x62, (byte)0x0e, (byte)0xaa, (byte)0x18, (byte)0xbe, (byte)0x1b, (byte)0xfc, |
| (byte)0x56, (byte)0x3e, (byte)0x4b, (byte)0xc6, (byte)0xd2, (byte)0x79, (byte)0x20, (byte)0x9a, (byte)0xdb, |
| (byte)0xc0, (byte)0xfe, (byte)0x78, (byte)0xcd, (byte)0x5a, (byte)0xf4, (byte)0x1f, (byte)0xdd, (byte)0xa8, |
| (byte)0x33, (byte)0x88, (byte)0x07, (byte)0xc7, (byte)0x31, (byte)0xb1, (byte)0x12, (byte)0x10, (byte)0x59, |
| (byte)0x27, (byte)0x80, (byte)0xec, (byte)0x5f, (byte)0x60, (byte)0x51, (byte)0x7f, (byte)0xa9, (byte)0x19, |
| (byte)0xb5, (byte)0x4a, (byte)0x0d, (byte)0x2d, (byte)0xe5, (byte)0x7a, (byte)0x9f, (byte)0x93, (byte)0xc9, |
| (byte)0x9c, (byte)0xef, (byte)0xa0, (byte)0xe0, (byte)0x3b, (byte)0x4d, (byte)0xae, (byte)0x2a, (byte)0xf5, |
| (byte)0xb0, (byte)0xc8, (byte)0xeb, (byte)0xbb, (byte)0x3c, (byte)0x83, (byte)0x53, (byte)0x99, (byte)0x61, |
| (byte)0x17, (byte)0x2b, (byte)0x04, (byte)0x7e, (byte)0xba, (byte)0x77, (byte)0xd6, (byte)0x26, (byte)0xe1, |
| (byte)0x69, (byte)0x14, (byte)0x63, (byte)0x55, (byte)0x21, (byte)0x0c, (byte)0x7d }; |
| |
| private static final byte[] SB4_sbox = { (byte)0x30, (byte)0x68, (byte)0x99, (byte)0x1b, (byte)0x87, (byte)0xb9, |
| (byte)0x21, (byte)0x78, (byte)0x50, (byte)0x39, (byte)0xdb, (byte)0xe1, (byte)0x72, (byte)0x9, (byte)0x62, |
| (byte)0x3c, (byte)0x3e, (byte)0x7e, (byte)0x5e, (byte)0x8e, (byte)0xf1, (byte)0xa0, (byte)0xcc, (byte)0xa3, |
| (byte)0x2a, (byte)0x1d, (byte)0xfb, (byte)0xb6, (byte)0xd6, (byte)0x20, (byte)0xc4, (byte)0x8d, (byte)0x81, |
| (byte)0x65, (byte)0xf5, (byte)0x89, (byte)0xcb, (byte)0x9d, (byte)0x77, (byte)0xc6, (byte)0x57, (byte)0x43, |
| (byte)0x56, (byte)0x17, (byte)0xd4, (byte)0x40, (byte)0x1a, (byte)0x4d, (byte)0xc0, (byte)0x63, (byte)0x6c, |
| (byte)0xe3, (byte)0xb7, (byte)0xc8, (byte)0x64, (byte)0x6a, (byte)0x53, (byte)0xaa, (byte)0x38, (byte)0x98, |
| (byte)0x0c, (byte)0xf4, (byte)0x9b, (byte)0xed, (byte)0x7f, (byte)0x22, (byte)0x76, (byte)0xaf, (byte)0xdd, |
| (byte)0x3a, (byte)0x0b, (byte)0x58, (byte)0x67, (byte)0x88, (byte)0x06, (byte)0xc3, (byte)0x35, (byte)0x0d, |
| (byte)0x01, (byte)0x8b, (byte)0x8c, (byte)0xc2, (byte)0xe6, (byte)0x5f, (byte)0x02, (byte)0x24, (byte)0x75, |
| (byte)0x93, (byte)0x66, (byte)0x1e, (byte)0xe5, (byte)0xe2, (byte)0x54, (byte)0xd8, (byte)0x10, (byte)0xce, |
| (byte)0x7a, (byte)0xe8, (byte)0x08, (byte)0x2c, (byte)0x12, (byte)0x97, (byte)0x32, (byte)0xab, (byte)0xb4, |
| (byte)0x27, (byte)0x0a, (byte)0x23, (byte)0xdf, (byte)0xef, (byte)0xca, (byte)0xd9, (byte)0xb8, (byte)0xfa, |
| (byte)0xdc, (byte)0x31, (byte)0x6b, (byte)0xd1, (byte)0xad, (byte)0x19, (byte)0x49, (byte)0xbd, (byte)0x51, |
| (byte)0x96, (byte)0xee, (byte)0xe4, (byte)0xa8, (byte)0x41, (byte)0xda, (byte)0xff, (byte)0xcd, (byte)0x55, |
| (byte)0x86, (byte)0x36, (byte)0xbe, (byte)0x61, (byte)0x52, (byte)0xf8, (byte)0xbb, (byte)0x0e, (byte)0x82, |
| (byte)0x48, (byte)0x69, (byte)0x9a, (byte)0xe0, (byte)0x47, (byte)0x9e, (byte)0x5c, (byte)0x04, (byte)0x4b, |
| (byte)0x34, (byte)0x15, (byte)0x79, (byte)0x26, (byte)0xa7, (byte)0xde, (byte)0x29, (byte)0xae, (byte)0x92, |
| (byte)0xd7, (byte)0x84, (byte)0xe9, (byte)0xd2, (byte)0xba, (byte)0x5d, (byte)0xf3, (byte)0xc5, (byte)0xb0, |
| (byte)0xbf, (byte)0xa4, (byte)0x3b, (byte)0x71, (byte)0x44, (byte)0x46, (byte)0x2b, (byte)0xfc, (byte)0xeb, |
| (byte)0x6f, (byte)0xd5, (byte)0xf6, (byte)0x14, (byte)0xfe, (byte)0x7c, (byte)0x70, (byte)0x5a, (byte)0x7d, |
| (byte)0xfd, (byte)0x2f, (byte)0x18, (byte)0x83, (byte)0x16, (byte)0xa5, (byte)0x91, (byte)0x1f, (byte)0x05, |
| (byte)0x95, (byte)0x74, (byte)0xa9, (byte)0xc1, (byte)0x5b, (byte)0x4a, (byte)0x85, (byte)0x6d, (byte)0x13, |
| (byte)0x07, (byte)0x4f, (byte)0x4e, (byte)0x45, (byte)0xb2, (byte)0x0f, (byte)0xc9, (byte)0x1c, (byte)0xa6, |
| (byte)0xbc, (byte)0xec, (byte)0x73, (byte)0x90, (byte)0x7b, (byte)0xcf, (byte)0x59, (byte)0x8f, (byte)0xa1, |
| (byte)0xf9, (byte)0x2d, (byte)0xf2, (byte)0xb1, (byte)0x00, (byte)0x94, (byte)0x37, (byte)0x9f, (byte)0xd0, |
| (byte)0x2e, (byte)0x9c, (byte)0x6e, (byte)0x28, (byte)0x3f, (byte)0x80, (byte)0xf0, (byte)0x3d, (byte)0xd3, |
| (byte)0x25, (byte)0x8a, (byte)0xb5, (byte)0xe7, (byte)0x42, (byte)0xb3, (byte)0xc7, (byte)0xea, (byte)0xf7, |
| (byte)0x4c, (byte)0x11, (byte)0x33, (byte)0x03, (byte)0xa2, (byte)0xac, (byte)0x60 }; |
| |
| protected static final int BLOCK_SIZE = 16; |
| |
| private byte[][] roundKeys; |
| //private boolean forEncryption; |
| |
| public void init(boolean forEncryption, CipherParameters params) throws IllegalArgumentException |
| { |
| if (!(params instanceof KeyParameter)) |
| { |
| throw new IllegalArgumentException( |
| "invalid parameter passed to ARIA init - " + params.getClass().getName()); |
| } |
| |
| //this.forEncryption = forEncryption; |
| this.roundKeys = keySchedule(forEncryption, ((KeyParameter)params).getKey()); |
| } |
| |
| public String getAlgorithmName() |
| { |
| return "ARIA"; |
| } |
| |
| public int getBlockSize() |
| { |
| return BLOCK_SIZE; |
| } |
| |
| public int processBlock(byte[] in, int inOff, byte[] out, int outOff) |
| throws DataLengthException, IllegalStateException |
| { |
| if (roundKeys == null) |
| { |
| throw new IllegalStateException("ARIA engine not initialised"); |
| } |
| if (inOff > (in.length - BLOCK_SIZE)) |
| { |
| throw new DataLengthException("input buffer too short"); |
| } |
| if (outOff > (out.length - BLOCK_SIZE)) |
| { |
| throw new OutputLengthException("output buffer too short"); |
| } |
| |
| byte[] z = new byte[BLOCK_SIZE]; |
| System.arraycopy(in, inOff, z, 0, BLOCK_SIZE); |
| |
| int i = 0, rounds = roundKeys.length - 3; |
| while (i < rounds) |
| { |
| FO(z, roundKeys[i++]); |
| FE(z, roundKeys[i++]); |
| } |
| |
| FO(z, roundKeys[i++]); |
| xor(z, roundKeys[i++]); |
| SL2(z); |
| xor(z, roundKeys[i]); |
| |
| System.arraycopy(z, 0, out, outOff, BLOCK_SIZE); |
| |
| return BLOCK_SIZE; |
| } |
| |
| public void reset() |
| { |
| // Empty |
| } |
| |
| protected static void A(byte[] z) |
| { |
| byte x0 = z[0], x1 = z[1], x2 = z[2], x3 = z[3], x4 = z[4], x5 = z[5], x6 = z[6], x7 = z[7], x8 = z[8], |
| x9 = z[9], x10 = z[10], x11 = z[11], x12 = z[12], x13 = z[13], x14 = z[14], x15 = z[15]; |
| |
| z[0] = (byte)(x3 ^ x4 ^ x6 ^ x8 ^ x9 ^ x13 ^ x14); |
| z[1] = (byte)(x2 ^ x5 ^ x7 ^ x8 ^ x9 ^ x12 ^ x15); |
| z[2] = (byte)(x1 ^ x4 ^ x6 ^ x10 ^ x11 ^ x12 ^ x15); |
| z[3] = (byte)(x0 ^ x5 ^ x7 ^ x10 ^ x11 ^ x13 ^ x14); |
| z[4] = (byte)(x0 ^ x2 ^ x5 ^ x8 ^ x11 ^ x14 ^ x15); |
| z[5] = (byte)(x1 ^ x3 ^ x4 ^ x9 ^ x10 ^ x14 ^ x15); |
| z[6] = (byte)(x0 ^ x2 ^ x7 ^ x9 ^ x10 ^ x12 ^ x13); |
| z[7] = (byte)(x1 ^ x3 ^ x6 ^ x8 ^ x11 ^ x12 ^ x13); |
| z[8] = (byte)(x0 ^ x1 ^ x4 ^ x7 ^ x10 ^ x13 ^ x15); |
| z[9] = (byte)(x0 ^ x1 ^ x5 ^ x6 ^ x11 ^ x12 ^ x14); |
| z[10] = (byte)(x2 ^ x3 ^ x5 ^ x6 ^ x8 ^ x13 ^ x15); |
| z[11] = (byte)(x2 ^ x3 ^ x4 ^ x7 ^ x9 ^ x12 ^ x14); |
| z[12] = (byte)(x1 ^ x2 ^ x6 ^ x7 ^ x9 ^ x11 ^ x12); |
| z[13] = (byte)(x0 ^ x3 ^ x6 ^ x7 ^ x8 ^ x10 ^ x13); |
| z[14] = (byte)(x0 ^ x3 ^ x4 ^ x5 ^ x9 ^ x11 ^ x14); |
| z[15] = (byte)(x1 ^ x2 ^ x4 ^ x5 ^ x8 ^ x10 ^ x15); |
| } |
| |
| protected static void FE(byte[] D, byte[] RK) |
| { |
| xor(D, RK); |
| SL2(D); |
| A(D); |
| } |
| |
| protected static void FO(byte[] D, byte[] RK) |
| { |
| xor(D, RK); |
| SL1(D); |
| A(D); |
| } |
| |
| protected static byte[][] keySchedule(boolean forEncryption, byte[] K) |
| { |
| int keyLen = K.length; |
| if (keyLen < 16 || keyLen > 32 || (keyLen & 7) != 0) |
| { |
| throw new IllegalArgumentException("Key length not 128/192/256 bits."); |
| } |
| |
| int keyLenIdx = (keyLen >>> 3) - 2; |
| |
| byte[] CK1 = C[keyLenIdx]; |
| byte[] CK2 = C[(keyLenIdx + 1) % 3]; |
| byte[] CK3 = C[(keyLenIdx + 2) % 3]; |
| |
| byte[] KL = new byte[16], KR = new byte[16]; |
| System.arraycopy(K, 0, KL, 0, 16); |
| System.arraycopy(K, 16, KR, 0, keyLen - 16); |
| |
| byte[] W0 = new byte[16]; |
| byte[] W1 = new byte[16]; |
| byte[] W2 = new byte[16]; |
| byte[] W3 = new byte[16]; |
| |
| System.arraycopy(KL, 0, W0, 0, 16); |
| |
| System.arraycopy(W0, 0, W1, 0, 16); |
| FO(W1, CK1); |
| xor(W1, KR); |
| |
| System.arraycopy(W1, 0, W2, 0, 16); |
| FE(W2, CK2); |
| xor(W2, W0); |
| |
| System.arraycopy(W2, 0, W3, 0, 16); |
| FO(W3, CK3); |
| xor(W3, W1); |
| |
| int numRounds = 12 + (keyLenIdx * 2); |
| byte[][] rks = new byte[numRounds + 1][16]; |
| |
| keyScheduleRound(rks[0], W0, W1, 19); |
| keyScheduleRound(rks[1], W1, W2, 19); |
| keyScheduleRound(rks[2], W2, W3, 19); |
| keyScheduleRound(rks[3], W3, W0, 19); |
| |
| keyScheduleRound(rks[4], W0, W1, 31); |
| keyScheduleRound(rks[5], W1, W2, 31); |
| keyScheduleRound(rks[6], W2, W3, 31); |
| keyScheduleRound(rks[7], W3, W0, 31); |
| |
| keyScheduleRound(rks[8], W0, W1, 67); |
| keyScheduleRound(rks[9], W1, W2, 67); |
| keyScheduleRound(rks[10], W2, W3, 67); |
| keyScheduleRound(rks[11], W3, W0, 67); |
| |
| keyScheduleRound(rks[12], W0, W1, 97); |
| if (numRounds > 12) |
| { |
| keyScheduleRound(rks[13], W1, W2, 97); |
| keyScheduleRound(rks[14], W2, W3, 97); |
| if (numRounds > 14) |
| { |
| keyScheduleRound(rks[15], W3, W0, 97); |
| |
| keyScheduleRound(rks[16], W0, W1, 109); |
| } |
| } |
| |
| if (!forEncryption) |
| { |
| reverseKeys(rks); |
| |
| for (int i = 1; i < numRounds; ++i) |
| { |
| A(rks[i]); |
| } |
| } |
| |
| return rks; |
| } |
| |
| protected static void keyScheduleRound(byte[] rk, byte[] w, byte[] wr, int n) |
| { |
| int off = n >>> 3, right = n & 7, left = 8 - right; |
| |
| int hi = wr[15 - off] & 0xFF; |
| |
| for (int to = 0; to < 16; ++to) |
| { |
| int lo = wr[(to - off) & 0xF] & 0xFF; |
| |
| int b = (hi << left) | (lo >>> right); |
| b ^= (w[to] & 0xFF); |
| |
| rk[to] = (byte)b; |
| |
| hi = lo; |
| } |
| } |
| |
| protected static void reverseKeys(byte[][] keys) |
| { |
| int length = keys.length, limit = length / 2, last = length - 1; |
| for (int i = 0; i < limit; ++i) |
| { |
| byte[] t = keys[i]; |
| keys[i] = keys[last - i]; |
| keys[last - i] = t; |
| } |
| } |
| |
| protected static byte SB1(byte x) |
| { |
| return SB1_sbox[x & 0xFF]; |
| } |
| |
| protected static byte SB2(byte x) |
| { |
| return SB2_sbox[x & 0xFF]; |
| } |
| |
| protected static byte SB3(byte x) |
| { |
| return SB3_sbox[x & 0xFF]; |
| } |
| |
| protected static byte SB4(byte x) |
| { |
| return SB4_sbox[x & 0xFF]; |
| } |
| |
| protected static void SL1(byte[] z) |
| { |
| z[0] = SB1(z[0]); |
| z[1] = SB2(z[1]); |
| z[2] = SB3(z[2]); |
| z[3] = SB4(z[3]); |
| z[4] = SB1(z[4]); |
| z[5] = SB2(z[5]); |
| z[6] = SB3(z[6]); |
| z[7] = SB4(z[7]); |
| z[8] = SB1(z[8]); |
| z[9] = SB2(z[9]); |
| z[10] = SB3(z[10]); |
| z[11] = SB4(z[11]); |
| z[12] = SB1(z[12]); |
| z[13] = SB2(z[13]); |
| z[14] = SB3(z[14]); |
| z[15] = SB4(z[15]); |
| } |
| |
| protected static void SL2(byte[] z) |
| { |
| z[0] = SB3(z[0]); |
| z[1] = SB4(z[1]); |
| z[2] = SB1(z[2]); |
| z[3] = SB2(z[3]); |
| z[4] = SB3(z[4]); |
| z[5] = SB4(z[5]); |
| z[6] = SB1(z[6]); |
| z[7] = SB2(z[7]); |
| z[8] = SB3(z[8]); |
| z[9] = SB4(z[9]); |
| z[10] = SB1(z[10]); |
| z[11] = SB2(z[11]); |
| z[12] = SB3(z[12]); |
| z[13] = SB4(z[13]); |
| z[14] = SB1(z[14]); |
| z[15] = SB2(z[15]); |
| } |
| |
| protected static void xor(byte[] z, byte[] x) |
| { |
| for (int i = 0; i < 16; ++i) |
| { |
| z[i] ^= x[i]; |
| } |
| } |
| } |
