DES.rar_DES JAVA_des_des 界面_des界面_java 界面 DES

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; class Des { /* * public method * void setKey(String strKey)seting KEY * public String encrypt(String str) encrypt proclaimed in writing,return cryptograph * public String dsencrypt(String digestHexStr) decodeing digestHexStr * */ private static String strDefaultKey =""; static final int pc_1_cp[]={ 57,49,41,33,25,17,9 ,1,58,50,42,34,26,18 ,10,2,59,51,43,35,27 ,19,11,3,60,52,44,36}; static final int pc_1_dp[]={ 63,55,47,39,31,23,15 ,7,62,54,46,38,30,22 ,14,6,61,53,45,37,29 ,21,13,5,28,20,12,4}; static final int pc_2p[]={ 14,17,11,24,1,5, 3,28,15,6,21,10, 23,19,12,4,26,8, 16,7,27,20,13,2, 41,52,31,37,47,55, 30,40,51,45,33,48, 44,49,39,56,34,53, 46,42,50,36,29,32}; static final int ls_countp[]={1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1}; static final int iip_tab_p[]={ 58,50,42,34,26,18,10,2, 60,52,44,36,28,20,12,4, 62,54,46,38,30,22,14,6, 64,56,48,40,32,24,16,8, 57,49,41,33,25,17,9,1, 59,51,43,35,27,19,11,3, 61,53,45,37,29,21,13,5, 63,55,47,39,31,23,15,7}; static final int _iip_tab_p[]={ 40,8,48,16,56,24,64,32, 39,7,47,15,55,23,63,31, 38,6,46,14,54,22,62,30, 37,5,45,13,53,21,61,29, 36,4,44,12,52,20,60,28, 35,3,43,11,51,19,59,27, 34,2,42,10,50,18,58,26, 33,1,41,9,49,17,57,25}; static final int e_r_p[]={ 32,1,2,3,4,5,4,5,6,7,8,9, 8,9,10,11,12,13,12,13,14,15,16,17, 16,17,18,19,20,21,20,21,22,23,24,25, 24,25,26,27,28,29,28,29,30,31,32,1}; static final int local_PP[]={ 16,7,20,21,29,12,28,17, 1,15,23,26,5,18,31,10, 2,8,24,14,32,27,3,9, 19,13,30,6,22,11,4,25}; static final int ccom_SSS_p[][][]={ {{14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7}, {0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8}, {4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0}, {15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13}}, {{15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10}, {3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5}, {0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15}, {13,8,10,1,3,15,4,2,11,6,7,12,0,5,14,9}}, {{10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8}, {13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1}, {13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7}, {1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12}}, {{7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15}, {13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9}, {10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4}, {3,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14}}, /* err on */ {{2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9}, {14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6}, /* err on */ {4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14}, {11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3}}, {{12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11}, {10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8}, {9,14,15,5,2,8,12,3,7,0,4,10,1,13,11,6}, {4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13}}, {{4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1}, {13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6}, {1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2}, {6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12}}, {{13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7}, {1,15,13,8,10,3,7,4,12,5,6,11,0,14,9,2}, {7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8}, {2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11}}}; static byte[][] C=new byte[17][28]; static byte[][] D=new byte[17][28]; static byte[][] K=new byte[17][48]; public Des() { return; } private static byte iu2b ( int input) { byte output1; output1 = (byte)(input & 0xff); return output1; } private static int b2iu(byte b) { return b < 0 ? b & 0x7F + 128 : b; } private static String byteHEX(byte ib) { char[] Digit = { '0','1','2','3','4','5','6','7','8','9', 'A','B','C','D','E','F' }; char[] ob = new char[2]; ob[0] = Digit[(ib >>> 4) & 0X0F]; ob[1] = Digit[ib & 0X0F]; String s = new String(ob); return s; } private static void desMemcpy (byte[] output, byte[] input, int outpos, int inpos, int len) { int i; for (i = 0; i < len; i++) output[outpos + i] = input[inpos + i]; } private static void Fexpand0(byte[] in,byte[] out) { int divide; int i,j; byte temp1; for (i=0;i<8;i++) { divide=7; for (j=0;j<8;j++) { temp1=in[i]; out[8*i+j]=iu2b((b2iu(temp1)>>>divide)&1); divide--; } } } private static void FLS(byte[] bits,byte[] buffer,int count) { int i,j; for (i=0;i<28;i++) { buffer[i]=bits[(i+count)%28]; } } private static void Fson(byte[] cc,byte[] dd,byte[] kk) { int i,j; byte[] buffer=new byte[56]; for (i=0;i<28;i++) buffer[i]=cc[i]; for (i=28;i<56;i++) buffer[i]=dd[i-28]; for (i=0;i<48;i++) kk[i]=buffer[pc_2p[i]-1]; } private static void Fsetkeystar(byte[] bits) { int i,j; for (i=0;i<28;i++) C[0][i]=bits[pc_1_cp[i]-1]; for (i=0;i<28;i++) D[0][i]=bits[pc_1_dp[i]-1]; for (j=0;j<16;j++) { FLS(C[j],C[j+1],ls_countp[j]); FLS(D[j],D[j+1],ls_countp[j]); Fson(C[j+1],D[j+1],K[j+1]); } } private static void Fiip(byte[] text,byte[] ll,byte[] rr) { int i,j; byte[] buffer=new byte[64]; byte[] tmp=new byte[64]; Fexpand0(text,buffer); for (i=0;i<32;i++) ll[i]=buffer[iip_tab_p[i]-1]; for (i=0;i<32;i++) rr[i]=buffer[iip_tab_p[i+32]-1]; } private static void Fs_box(byte[] aa,byte[] bb) { int i,j,k,m; int y,z; byte[] ss=new byte[8]; m=0; for (i=0;i<8;i++) { j=6*i; y=b2iu(aa[j])*2+b2iu(aa[j+5]); z=b2iu(aa[j+1])*8+b2iu(aa[j+2])*4+b2iu(aa[j+3])*2+b2iu(aa[j+4]); ss[i]=iu2b(ccom_SSS_p[i][y][z]); y=3; for (k=0;k<4;k++) { bb[m++]=iu2b((b2iu(ss[i])>>>y)&1); y--; } } } private static void FF(int n,byte[] ll,byte[] rr,byte[] LL,byte[] RR) { int i,j; byte[] buffer=new byte[64],tmp=new byte[64]; for (i=0;i<48;i++) buffer[i]=rr[e_r_p[i]-1]; for (i=0;i<48;i++) buffer[i]=iu2b((b2iu(buffer[i])+b2iu(K[n][i]))&1); Fs_box(buffer,tmp); for (i=0;i<32;i++) buffer[i]=tmp[local_PP[i]-1]; for (i=0;i<32;i++) RR[i]=iu2b((b2iu(buffer[i])+b2iu(ll[i]))&1); for (i=0;i<32;i++) LL[i]=rr[i]; } private static void _Fiip(byte[] text,byte[] ll,byte[] rr) { int i,j; byte[] tmp=new byte[64]; for (i=0;i<32;i++) tmp[i]=ll[i]; for (i=32;i<64;i++) tmp[i]=rr[i-32]; for (i=0;i<64;i++) text[i]=tmp[_iip_tab_p[i]-1]; } private static void Fcompress016(byte[] out,byte[] in) { int times; int i,j; for (i=0;i<16;i++) { times=3; in[i]='0'; for (j=0;j<4;j++) { in[i]=iu2b(b2iu(in[i])+(b2iu(out[i*16+j])<<times)); times--; } } } private static void Fcompress0(byte[] out,byte[] in) { int times; int i,j; for (i=0;i<8;i++) { times=7; in[i]=0; for (j=0;j<8;j++) { in[i]=iu2b(b2iu(in[i])+(b2iu(out[i*8+j])<<times)); times--; } } } private static void Fencrypt0(byte[] text,byte[] mtext) { byte[] ll=new byte[64],rr=new byte[64],LL=new byte[64],RR=new byte[64]; byte[] tmp=new byte[64]; int i,j; Fiip(text,ll,rr); for (i=1;i<17;i++) { FF(i,ll,rr,LL,RR); for (j=0;j<32;j++) { ll[j]=LL[j]; rr[j]=RR[j]; } } _Fiip(tmp,rr,ll); Fcompress0(tmp,mtext); } private static void FDES(byte[] key,byte[] text,byte[] mtext) { byte[] tmp=new byte[64]; Fexpand0(key,tmp); Fsetkeystar(tmp); Fencrypt0(text,mtext); } private static int ENCRYPT(byte[] key, byte[] s,byte[] d,int len ) { int i,j; byte[] cData=new byte[8]; byte[] cEncryptData=new byte[8]; for (i=0;i<len;i+=8) { if ((i+8)>len) { desMemcpy(cData,s,0,i,len-i); for (j = len-i; j < 8; j++) cData[j] = 0; } else desMemcpy(cData,s,0,i,8); FDES(key,cData,cEncryptData); desMemcpy(d,cEncryptData,i,0,8); } return i; } private st