package com.sinaweibo;
//新浪微博密碼加密的算法
public class SinaSSOEncoder {
private boolean i=false;
private int g=8;
public SinaSSOEncoder(){
}
public String encode(String psw,String servertime,String nonce){
String password;
password=hex_sha1(""+hex_sha1(hex_sha1(psw))+servertime+nonce);
return password;
}
private String hex_sha1(String j) {
return h(b(f(j,j.length()*g), j.length() * g));
}
private String h(int[] l){
String k = i ? "0123456789ABCDEF" : "0123456789abcdef";
String m = "";
for (int j = 0; j < l.length * 4; j++) {
m += k.charAt((l[j >> 2] >> ((3 - j % 4) * 8 + 4)) & 15) + "" + k.charAt((l[j >> 2] >> ((3 - j % 4) * 8)) & 15);
}
return m;
}
private int[] b(int[] A,int r){
A[r>>5]|=128<<(24-r%32);
A[((r+64>>9)<<4)+15]=r;
int[] B = new int[80];
int z = 1732584193;
int y = -271733879;
int v = -1732584194;
int u = 271733878;
int s = -1009589776;
for (int o = 0; o < A.length; o += 16) {
int q = z;
int p = y;
int n = v;
int m = u;
int k = s;
for (int l = 0; l < 80; l++) {
if (l < 16) {
B[l] = A[o + l];
} else {
B[l] = d(B[l - 3] ^ B[l - 8] ^ B[l - 14] ^ B[l - 16], 1);
}
int C = e(e(d(z, 5), a(l, y, v, u)), e(e(s, B[l]), c(l)));
s = u;
u = v;
v = d(y, 30);
y = z;
z = C;
}
z = e(z, q);
y = e(y, p);
v = e(v, n);
u = e(u, m);
s = e(s, k);
}
return new int[]{z,y,v,u,s};
}
private int a(int k,int j,int m,int l){
if(k<20){return(j&m)|((~j)&l);};
if(k<40){return j^m^l;};
if(k<60){return(j&m)|(j&l)|(m&l);};
return j^m^l;
}
private int c(int j){
return(j<20)?1518500249:(j<40)?1859775393:(j<60)?-1894007588:-899497514;
}
private int e(int j, int m) {
int l = (j & 65535) + (m & 65535);
int k = (j >> 16) + (m >> 16) + (l >> 16);
return (k << 16) | (l & 65535);
}
private int d(int j,int k){
return(j<<k)|(j>>>(32-k));
}
private int[] f(String m,int r){
int[] l;
int j = (1<<this.g)-1;
int len=((r+64>>9)<<4)+15;
int k;
for(k=0;k<m.length()*g;k+=g){
len = k>>5>len?k>>5:len;
}
l = new int[len+1];
for(k=0;k<l.length;k++){
l[k]=0;
}
for(k=0;k<m.length()*g;k+=g){
l[k>>5]|=(m.charAt(k/g)&j)<<(24-k%32);
}
return l;
}
}