了解下JAVA的Java加密：Unix尺度加密办法

认真的记，感觉很紧张根本就没有时间和能力，来对技术知识点进行思考。这样课下就只能对知识进行简单的理解，其实简单的理解就是记忆课堂上讲的知识点，
JAVA方面十分着名的一个类，很EASY的利用
/***************************************************************************
*
*JCrypt.java
*
*Java-basedimplementationoftheunixcryptfunction
*
*BaseduponCsourcecodewrittenbyEricYoung,eay@psych.uq.oz.au<mailto:eay@psych.uq.oz.au>
*Downloadedfrompublicdomainarchivesatdeveloper.com
*
*Usage:JCrypt.crypt(Stringseed,StringstringToEncrypt)-->String
*orJCrypt.main(Stringseed,StringstringToEncrypt)-->Void
*
***************************************************************************
*/
packagesecure_election_system;
publicclassJCrypt
{
privateJCrypt(){}
privatestaticfinalintITERATIONS=16;
privatestaticfinalintcon_salt[]=
{
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,
0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,
0x0A,0x0B,0x05,0x06,0x07,0x08,0x09,0x0A,
0x0B,0x0C,0x0D,0x0E,0x0F,0x10,0x11,0x12,
0x13,0x14,0x15,0x16,0x17,0x18,0x19,0x1A,
0x1B,0x1C,0x1D,0x1E,0x1F,0x20,0x21,0x22,
0x23,0x24,0x25,0x20,0x21,0x22,0x23,0x24,
0x25,0x26,0x27,0x28,0x29,0x2A,0x2B,0x2C,
0x2D,0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,
0x35,0x36,0x37,0x38,0x39,0x3A,0x3B,0x3C,
0x3D,0x3E,0x3F,0x00,0x00,0x00,0x00,0x00,
};
privatestaticfinalbooleanshifts2[]=
{
false,false,true,true,true,true,true,true,
false,true,true,true,true,true,true,false
};
privatestaticfinalintskb[][]=
{
{
/*forCbits(numberedasperFIPS46)123456*/
0x00000000,0x00000010,0x20000000,0x20000010,
0x00010000,0x00010010,0x20010000,0x20010010,
0x00000800,0x00000810,0x20000800,0x20000810,
0x00010800,0x00010810,0x20010800,0x20010810,
0x00000020,0x00000030,0x20000020,0x20000030,
0x00010020,0x00010030,0x20010020,0x20010030,
0x00000820,0x00000830,0x20000820,0x20000830,
0x00010820,0x00010830,0x20010820,0x20010830,
0x00080000,0x00080010,0x20080000,0x20080010,
0x00090000,0x00090010,0x20090000,0x20090010,
0x00080800,0x00080810,0x20080800,0x20080810,
0x00090800,0x00090810,0x20090800,0x20090810,
0x00080020,0x00080030,0x20080020,0x20080030,
0x00090020,0x00090030,0x20090020,0x20090030,
0x00080820,0x00080830,0x20080820,0x20080830,
0x00090820,0x00090830,0x20090820,0x20090830,
},
{
/*forCbits(numberedasperFIPS46)7810111213*/
0x00000000,0x02000000,0x00002000,0x02002000,
0x00200000,0x02200000,0x00202000,0x02202000,
0x00000004,0x02000004,0x00002004,0x02002004,
0x00200004,0x02200004,0x00202004,0x02202004,
0x00000400,0x02000400,0x00002400,0x02002400,
0x00200400,0x02200400,0x00202400,0x02202400,
0x00000404,0x02000404,0x00002404,0x02002404,
0x00200404,0x02200404,0x00202404,0x02202404,
0x10000000,0x12000000,0x10002000,0x12002000,
0x10200000,0x12200000,0x10202000,0x12202000,
0x10000004,0x12000004,0x10002004,0x12002004,
0x10200004,0x12200004,0x10202004,0x12202004,
0x10000400,0x12000400,0x10002400,0x12002400,
0x10200400,0x12200400,0x10202400,0x12202400,
0x10000404,0x12000404,0x10002404,0x12002404,
0x10200404,0x12200404,0x10202404,0x12202404,
},
{
/*forCbits(numberedasperFIPS46)141516171920*/
0x00000000,0x00000001,0x00040000,0x00040001,
0x01000000,0x01000001,0x01040000,0x01040001,
0x00000002,0x00000003,0x00040002,0x00040003,
0x01000002,0x01000003,0x01040002,0x01040003,
0x00000200,0x00000201,0x00040200,0x00040201,
0x01000200,0x01000201,0x01040200,0x01040201,
0x00000202,0x00000203,0x00040202,0x00040203,
0x01000202,0x01000203,0x01040202,0x01040203,
0x08000000,0x08000001,0x08040000,0x08040001,
0x09000000,0x09000001,0x09040000,0x09040001,
0x08000002,0x08000003,0x08040002,0x08040003,
0x09000002,0x09000003,0x09040002,0x09040003,
0x08000200,0x08000201,0x08040200,0x08040201,
0x09000200,0x09000201,0x09040200,0x09040201,
0x08000202,0x08000203,0x08040202,0x08040203,
0x09000202,0x09000203,0x09040202,0x09040203,
},
{
/*forCbits(numberedasperFIPS46)212324262728*/
0x00000000,0x00100000,0x00000100,0x00100100,
0x00000008,0x00100008,0x00000108,0x00100108,
0x00001000,0x00101000,0x00001100,0x00101100,
0x00001008,0x00101008,0x00001108,0x00101108,
0x04000000,0x04100000,0x04000100,0x04100100,
0x04000008,0x04100008,0x04000108,0x04100108,
0x04001000,0x04101000,0x04001100,0x04101100,
0x04001008,0x04101008,0x04001108,0x04101108,
0x00020000,0x00120000,0x00020100,0x00120100,
0x00020008,0x00120008,0x00020108,0x00120108,
0x00021000,0x00121000,0x00021100,0x00121100,
0x00021008,0x00121008,0x00021108,0x00121108,
0x04020000,0x04120000,0x04020100,0x04120100,
0x04020008,0x04120008,0x04020108,0x04120108,
0x04021000,0x04121000,0x04021100,0x04121100,
0x04021008,0x04121008,0x04021108,0x04121108,
},
{
/*forDbits(numberedasperFIPS46)123456*/
0x00000000,0x10000000,0x00010000,0x10010000,
0x00000004,0x10000004,0x00010004,0x10010004,
0x20000000,0x30000000,0x20010000,0x30010000,
0x20000004,0x30000004,0x20010004,0x30010004,
0x00100000,0x10100000,0x00110000,0x10110000,
0x00100004,0x10100004,0x00110004,0x10110004,
0x20100000,0x30100000,0x20110000,0x30110000,
0x20100004,0x30100004,0x20110004,0x30110004,
0x00001000,0x10001000,0x00011000,0x10011000,
0x00001004,0x10001004,0x00011004,0x10011004,
0x20001000,0x30001000,0x20011000,0x30011000,
0x20001004,0x30001004,0x20011004,0x30011004,
0x00101000,0x10101000,0x00111000,0x10111000,
0x00101004,0x10101004,0x00111004,0x10111004,
0x20101000,0x30101000,0x20111000,0x30111000,
0x20101004,0x30101004,0x20111004,0x30111004,
},
{
/*forDbits(numberedasperFIPS46)8911121314*/
0x00000000,0x08000000,0x00000008,0x08000008,
0x00000400,0x08000400,0x00000408,0x08000408,
0x00020000,0x08020000,0x00020008,0x08020008,
0x00020400,0x08020400,0x00020408,0x08020408,
0x00000001,0x08000001,0x00000009,0x08000009,
0x00000401,0x08000401,0x00000409,0x08000409,
0x00020001,0x08020001,0x00020009,0x08020009,
0x00020401,0x08020401,0x00020409,0x08020409,
0x02000000,0x0A000000,0x02000008,0x0A000008,
0x02000400,0x0A000400,0x02000408,0x0A000408,
0x02020000,0x0A020000,0x02020008,0x0A020008,
0x02020400,0x0A020400,0x02020408,0x0A020408,
0x02000001,0x0A000001,0x02000009,0x0A000009,
0x02000401,0x0A000401,0x02000409,0x0A000409,
0x02020001,0x0A020001,0x02020009,0x0A020009,
0x02020401,0x0A020401,0x02020409,0x0A020409,
},
{
/*forDbits(numberedasperFIPS46)161718192021*/
0x00000000,0x00000100,0x00080000,0x00080100,
0x01000000,0x01000100,0x01080000,0x01080100,
0x00000010,0x00000110,0x00080010,0x00080110,
0x01000010,0x01000110,0x01080010,0x01080110,
0x00200000,0x00200100,0x00280000,0x00280100,
0x01200000,0x01200100,0x01280000,0x01280100,
0x00200010,0x00200110,0x00280010,0x00280110,
0x01200010,0x01200110,0x01280010,0x01280110,
0x00000200,0x00000300,0x00080200,0x00080300,
0x01000200,0x01000300,0x01080200,0x01080300,
0x00000210,0x00000310,0x00080210,0x00080310,
0x01000210,0x01000310,0x01080210,0x01080310,
0x00200200,0x00200300,0x00280200,0x00280300,
0x01200200,0x01200300,0x01280200,0x01280300,
0x00200210,0x00200310,0x00280210,0x00280310,
0x01200210,0x01200310,0x01280210,0x01280310,
},
{
/*forDbits(numberedasperFIPS46)222324252728*/
0x00000000,0x04000000,0x00040000,0x04040000,
0x00000002,0x04000002,0x00040002,0x04040002,
0x00002000,0x04002000,0x00042000,0x04042000,
0x00002002,0x04002002,0x00042002,0x04042002,
0x00000020,0x04000020,0x00040020,0x04040020,
0x00000022,0x04000022,0x00040022,0x04040022,
0x00002020,0x04002020,0x00042020,0x04042020,
0x00002022,0x04002022,0x00042022,0x04042022,
0x00000800,0x04000800,0x00040800,0x04040800,
0x00000802,0x04000802,0x00040802,0x04040802,
0x00002800,0x04002800,0x00042800,0x04042800,
0x00002802,0x04002802,0x00042802,0x04042802,
0x00000820,0x04000820,0x00040820,0x04040820,
0x00000822,0x04000822,0x00040822,0x04040822,
0x00002820,0x04002820,0x00042820,0x04042820,
0x00002822,0x04002822,0x00042822,0x04042822,
},
};
privatestaticfinalintSPtrans[][]=
{
{
/*nibble0*/
0x00820200,0x00020000,0x80800000,0x80820200,
0x00800000,0x80020200,0x80020000,0x80800000,
0x80020200,0x00820200,0x00820000,0x80000200,
0x80800200,0x00800000,0x00000000,0x80020000,
0x00020000,0x80000000,0x00800200,0x00020200,
0x80820200,0x00820000,0x80000200,0x00800200,
0x80000000,0x00000200,0x00020200,0x80820000,
0x00000200,0x80800200,0x80820000,0x00000000,
0x00000000,0x80820200,0x00800200,0x80020000,
0x00820200,0x00020000,0x80000200,0x00800200,
0x80820000,0x00000200,0x00020200,0x80800000,
0x80020200,0x80000000,0x80800000,0x00820000,
0x80820200,0x00020200,0x00820000,0x80800200,
0x00800000,0x80000200,0x80020000,0x00000000,
0x00020000,0x00800000,0x80800200,0x00820200,
0x80000000,0x80820000,0x00000200,0x80020200,
},
{
/*nibble1*/
0x10042004,0x00000000,0x00042000,0x10040000,
0x10000004,0x00002004,0x10002000,0x00042000,
0x00002000,0x10040004,0x00000004,0x10002000,
0x00040004,0x10042000,0x10040000,0x00000004,
0x00040000,0x10002004,0x10040004,0x00002000,
0x00042004,0x10000000,0x00000000,0x00040004,
0x10002004,0x00042004,0x10042000,0x10000004,
0x10000000,0x00040000,0x00002004,0x10042004,
0x00040004,0x10042000,0x10002000,0x00042004,
0x10042004,0x00040004,0x10000004,0x00000000,
0x10000000,0x00002004,0x00040000,0x10040004,
0x00002000,0x10000000,0x00042004,0x10002004,
0x10042000,0x00002000,0x00000000,0x10000004,
0x00000004,0x10042004,0x00042000,0x10040000,
0x10040004,0x00040000,0x00002004,0x10002000,
0x10002004,0x00000004,0x10040000,0x00042000,
},
{
/*nibble2*/
0x41000000,0x01010040,0x00000040,0x41000040,
0x40010000,0x01000000,0x41000040,0x00010040,
0x01000040,0x00010000,0x01010000,0x40000000,
0x41010040,0x40000040,0x40000000,0x41010000,
0x00000000,0x40010000,0x01010040,0x00000040,
0x40000040,0x41010040,0x00010000,0x41000000,
0x41010000,0x01000040,0x40010040,0x01010000,
0x00010040,0x00000000,0x01000000,0x40010040,
0x01010040,0x00000040,0x40000000,0x00010000,
0x40000040,0x40010000,0x01010000,0x41000040,
0x00000000,0x01010040,0x00010040,0x41010000,
0x40010000,0x01000000,0x41010040,0x40000000,
0x40010040,0x41000000,0x01000000,0x41010040,
0x00010000,0x01000040,0x41000040,0x00010040,
0x01000040,0x00000000,0x41010000,0x40000040,
0x41000000,0x40010040,0x00000040,0x01010000,
},
{
/*nibble3*/
0x00100402,0x04000400,0x00000002,0x04100402,
0x00000000,0x04100000,0x04000402,0x00100002,
0x04100400,0x04000002,0x04000000,0x00000402,
0x04000002,0x00100402,0x00100000,0x04000000,
0x04100002,0x00100400,0x00000400,0x00000002,
0x00100400,0x04000402,0x04100000,0x00000400,
0x00000402,0x00000000,0x00100002,0x04100400,
0x04000400,0x04100002,0x04100402,0x00100000,
0x04100002,0x00000402,0x00100000,0x04000002,
0x00100400,0x04000400,0x00000002,0x04100000,
0x04000402,0x00000000,0x00000400,0x00100002,
0x00000000,0x04100002,0x04100400,0x00000400,
0x04000000,0x04100402,0x00100402,0x00100000,
0x04100402,0x00000002,0x04000400,0x00100402,
0x00100002,0x00100400,0x04100000,0x04000402,
0x00000402,0x04000000,0x04000002,0x04100400,
},
{
/*nibble4*/
0x02000000,0x00004000,0x00000100,0x02004108,
0x02004008,0x02000100,0x00004108,0x02004000,
0x00004000,0x00000008,0x02000008,0x00004100,
0x02000108,0x02004008,0x02004100,0x00000000,
0x00004100,0x02000000,0x00004008,0x00000108,
0x02000100,0x00004108,0x00000000,0x02000008,
0x00000008,0x02000108,0x02004108,0x00004008,
0x02004000,0x00000100,0x00000108,0x02004100,
0x02004100,0x02000108,0x00004008,0x02004000,
0x00004000,0x00000008,0x02000008,0x02000100,
0x02000000,0x00004100,0x02004108,0x00000000,
0x00004108,0x02000000,0x00000100,0x00004008,
0x02000108,0x00000100,0x00000000,0x02004108,
0x02004008,0x02004100,0x00000108,0x00004000,
0x00004100,0x02004008,0x02000100,0x00000108,
0x00000008,0x00004108,0x02004000,0x02000008,
},
{
/*nibble5*/
0x20000010,0x00080010,0x00000000,0x20080800,
0x00080010,0x00000800,0x20000810,0x00080000,
0x00000810,0x20080810,0x00080800,0x20000000,
0x20000800,0x20000010,0x20080000,0x00080810,
0x00080000,0x20000810,0x20080010,0x00000000,
0x00000800,0x00000010,0x20080800,0x20080010,
0x20080810,0x20080000,0x20000000,0x00000810,
0x00000010,0x00080800,0x00080810,0x20000800,
0x00000810,0x20000000,0x20000800,0x00080810,
0x20080800,0x00080010,0x00000000,0x20000800,
0x20000000,0x00000800,0x20080010,0x00080000,
0x00080010,0x20080810,0x00080800,0x00000010,
0x20080810,0x00080800,0x00080000,0x20000810,
0x20000010,0x20080000,0x00080810,0x00000000,
0x00000800,0x20000010,0x20000810,0x20080800,
0x20080000,0x00000810,0x00000010,0x20080010,
},
{
/*nibble6*/
0x00001000,0x00000080,0x00400080,0x00400001,
0x00401081,0x00001001,0x00001080,0x00000000,
0x00400000,0x00400081,0x00000081,0x00401000,
0x00000001,0x00401080,0x00401000,0x00000081,
0x00400081,0x00001000,0x00001001,0x00401081,
0x00000000,0x00400080,0x00400001,0x00001080,
0x00401001,0x00001081,0x00401080,0x00000001,
0x00001081,0x00401001,0x00000080,0x00400000,
0x00001081,0x00401000,0x00401001,0x00000081,
0x00001000,0x00000080,0x00400000,0x00401001,
0x00400081,0x00001081,0x00001080,0x00000000,
0x00000080,0x00400001,0x00000001,0x00400080,
0x00000000,0x00400081,0x00400080,0x00001080,
0x00000081,0x00001000,0x00401081,0x00400000,
0x00401080,0x00000001,0x00001001,0x00401081,
0x00400001,0x00401080,0x00401000,0x00001001,
},
{
/*nibble7*/
0x08200020,0x08208000,0x00008020,0x00000000,
0x08008000,0x00200020,0x08200000,0x08208020,
0x00000020,0x08000000,0x00208000,0x00008020,
0x00208020,0x08008020,0x08000020,0x08200000,
0x00008000,0x00208020,0x00200020,0x08008000,
0x08208020,0x08000020,0x00000000,0x00208000,
0x08000000,0x00200000,0x08008020,0x08200020,
0x00200000,0x00008000,0x08208000,0x00000020,
0x00200000,0x00008000,0x08000020,0x08208020,
0x00008020,0x08000000,0x00000000,0x00208000,
0x08200020,0x08008020,0x08008000,0x00200020,
0x08208000,0x00000020,0x00200020,0x08008000,
0x08208020,0x00200000,0x08200000,0x08000020,
0x00208000,0x00008020,0x08008020,0x08200000,
0x00000020,0x08208000,0x00208020,0x00000000,
0x08000000,0x08200020,0x00008000,0x00208020
}
};
privatestaticfinalintcov_2char[]=
{
0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
};
privatestaticfinalintbyteToUnsigned(byteb)
{
intvalue=(int)b;
return(value>=0?value:value+256);
}
privatestaticintfourBytesToInt(byteb[],intoffset)
{
intvalue;
value=byteToUnsigned(b[offset++]);
value|=(byteToUnsigned(b[offset++])<<8);
value|=(byteToUnsigned(b[offset++])<<16);
value|=(byteToUnsigned(b[offset++])<<24);
return(value);
}
privatestaticfinalvoidintToFourBytes(intiValue,byteb[],int
offset)
{
b[offset++]=(byte)((iValue)&0xff);
b[offset++]=(byte)((iValue>>>8)&0xff);
b[offset++]=(byte)((iValue>>>16)&0xff);
b[offset++]=(byte)((iValue>>>24)&0xff);
}
privatestaticfinalvoidPERM_OP(inta,intb,intn,intm,int
results[])
{
intt;
t=((a>>>n)^b)&m;
a^=t<<n;
b^=t;
results[0]=a;
results[1]=b;
}
privatestaticfinalintHPERM_OP(inta,intn,intm)
{
intt;
t=((a<<(16-n))^a)&m;
a=a^t^(t>>>(16-n));
return(a);
}
privatestaticint[]des_set_key(bytekey[])
{
intschedule[]=newint[ITERATIONS*2];
intc=fourBytesToInt(key,0);
intd=fourBytesToInt(key,4);
intresults[]=newint[2];
PERM_OP(d,c,4,0x0f0f0f0f,results);
d=results[0];c=results[1];
c=HPERM_OP(c,-2,0xcccc0000);
d=HPERM_OP(d,-2,0xcccc0000);
PERM_OP(d,c,1,0x55555555,results);
d=results[0];c=results[1];
PERM_OP(c,d,8,0x00ff00ff,results);
c=results[0];d=results[1];
PERM_OP(d,c,1,0x55555555,results);
d=results[0];c=results[1];
d=(((d&0x000000ff)<<16)|(d&0x0000ff00)|
((d&0x00ff0000)>>>16)|((c&0xf0000000)>>>4));
c&=0x0fffffff;
ints,t;
intj=0;
for(inti=0;i<ITERATIONS;i++)
{
if(shifts2[i])
{
c=(c>>>2)|(c<<26);
d=(d>>>2)|(d<<26);
}
else
{
c=(c>>>1)|(c<<27);
d=(d>>>1)|(d<<27);
}
c&=0x0fffffff;
d&=0x0fffffff;
s=skb[0][(c)&0x3f]|
skb[1][((c>>>6)&0x03)|((c>>>7)&0x3c)]|
skb[2][((c>>>13)&0x0f)|((c>>>14)&0x30)]|
skb[3][((c>>>20)&0x01)|((c>>>21)&0x06)|
((c>>>22)&0x38)];
t=skb[4][(d)&0x3f]|
skb[5][((d>>>7)&0x03)|((d>>>8)&0x3c)]|
skb[6][(d>>>15)&0x3f]|
skb[7][((d>>>21)&0x0f)|((d>>>22)&0x30)];
schedule[j++]=((t<<16)|(s&0x0000ffff))&0xffffffff;
s=((s>>>16)|(t&0xffff0000));
s=(s<<4)|(s>>>28);
schedule[j++]=s&0xffffffff;
}
return(schedule);
}
privatestaticfinalintD_ENCRYPT
(
intL,intR,intS,intE0,intE1,ints[]
)
{
intt,u,v;
v=R^(R>>>16);
u=v&E0;
v=v&E1;
u=(u^(u<<16))^R^s[S];
t=(v^(v<<16))^R^s[S+1];
t=(t>>>4)|(t<<28);
L^=SPtrans[1][(t)&0x3f]|
SPtrans[3][(t>>>8)&0x3f]|
SPtrans[5][(t>>>16)&0x3f]|
SPtrans[7][(t>>>24)&0x3f]|
SPtrans[0][(u)&0x3f]|
SPtrans[2][(u>>>8)&0x3f]|
SPtrans[4][(u>>>16)&0x3f]|
SPtrans[6][(u>>>24)&0x3f];
return(L);
}
privatestaticfinalint[]body(intschedule[],intEswap0,intEswap1)
{
intleft=0;
intright=0;
intt=0;
for(intj=0;j<25;j++)
{
for(inti=0;i<ITERATIONS*2;i+=4)
{
left=D_ENCRYPT(left,right,i,Eswap0,Eswap1,
schedule);
right=D_ENCRYPT(right,left,i+2,Eswap0,Eswap1,
schedule);
}
t=left;
left=right;
right=t;
}
t=right;
right=(left>>>1)|(left<<31);
left=(t>>>1)|(t<<31);
left&=0xffffffff;
right&=0xffffffff;
intresults[]=newint[2];
PERM_OP(right,left,1,0x55555555,results);
right=results[0];left=results[1];
PERM_OP(left,right,8,0x00ff00ff,results);
left=results[0];right=results[1];
PERM_OP(right,left,2,0x33333333,results);
right=results[0];left=results[1];
PERM_OP(left,right,16,0x0000ffff,results);
left=results[0];right=results[1];
PERM_OP(right,left,4,0x0f0f0f0f,results);
right=results[0];left=results[1];
intout[]=newint[2];
out[0]=left;out[1]=right;
return(out);
}
publicsynchronizedstaticfinalStringcrypt(Stringsalt,Stringoriginal)
{
while(salt.length()<2)salt+="A";
StringBufferbuffer=newStringBuffer("");
charcharZero=salt.charAt(0);
charcharOne=salt.charAt(1);
buffer.setCharAt(0,charZero);
buffer.setCharAt(1,charOne);
intEswap0=con_salt[(int)charZero];
intEswap1=con_salt[(int)charOne]<<4;
bytekey[]=newbyte[8];
for(inti=0;i<key.length;i++)key[i]=(byte)0;
for(inti=0;i<key.length&&i<original.length();i++)
{
intiChar=(int)original.charAt(i);
key[i]=(byte)(iChar<<1);
}
intschedule[]=des_set_key(key);
intout[]=body(schedule,Eswap0,Eswap1);
byteb[]=newbyte[9];
intToFourBytes(out[0],b,0);
intToFourBytes(out[1],b,4);
b[8]=0;
for(inti=2,y=0,u=0x80;i<13;i++)
{
for(intj=0,c=0;j<6;j++)
{
c<<=1;
if(((int)b[y]&u)!=0)c|=1;
u>>>=1;
if(u==0)
{
y++;
u=0x80;
}
buffer.setCharAt(i,(char)cov_2char[c]);
}
}
return(buffer.toString());
}
}

诸如RMI，EJB等一些技术并不是你说的那么复杂，而是它们把一些复杂的工具封装成不复杂的工具了，理解这些工具是需要些时间。我问你，.net网页编程里有这些工具吗？要简单多少？。

关于设计模式的资料，还是向大家推荐banq的网站 [url]http://www.ckuyun.com/[/url]，他把GOF的23种模式以通俗易懂的方式诠释出来，纯Java描述，真是经典中的经典。

吧，现在很流行的Structs就是它的一种实现方式，不过Structs用起来实在是很繁，我们只要学习其精髓即可，我们完全可以设计自己的MVC结构。然后你再研究一下软件Refactoring (重构)和极限XP编程，相信你又会上一个台阶。 做完这些，你不如整理一下你的Java代码，把那些经典的程序和常见的应用整理出来，再精心打造一番，提高其重用性和可扩展性。你再找几个志同道合的朋友成立一个工作室吧

仓酷云

你一定会高兴地说，哈哈，原来成为Java高手就这么简单啊!记得Tomjava也曾碰到过一个项目经理，号称Java很简单，只要三个月就可以学会。

另外编写和运行Java程序需要JDK(包括JRE)，在sun的官方网站上有下载，thinking in java第三版用的JDK版本是1.4,现在流行的版本1.5（sun称作J2SE 5.0，汗），不过听说Bruce的TIJ第四版国外已经出来了，是专门为J2SE 5.0而写的。

你一定会高兴地说，哈哈，原来成为Java高手就这么简单啊!记得Tomjava也曾碰到过一个项目经理，号称Java很简单，只要三个月就可以学会。

那么我书也看了，程序也做了，别人问我的问题我都能解决了，是不是就成为高手了呢？当然没那么简单，这只是万里长征走完了第一步。不信？那你出去接一个项目，你知道怎么下手吗，你知道怎么设计吗，你知道怎么组织人员进行开发吗？你现在脑子里除了一些散乱的代码之外，可能再没有别的东西了吧！

是一种突破用户端机器环境和CPU

是一种使用者不需花费很多时间学习的语言

学Java必读的两个开源程序就是Jive和Pet Store.。 Jive是国外一个非常著名的BBS程序，完全开放源码。论坛的设计采用了很多先进的技术，如Cache、用户认证、Filter、XML等，而且论坛完全屏蔽了对数据库的访问，可以很轻易的在不同数据库中移植。论坛还有方便的安装和管理程序，这是我们平时编程时容易忽略的一部份（中国程序员一般只注重编程的技术含量，却完全不考虑用户的感受，这就是我们与国外软件的差距所在）。