md5加密算法 - java版
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fuyun
2010-04-13
public static String getMD5(String source){
String s = null;
char hexDigits[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
try{
java.security.MessageDigest md = java.security.MessageDigest.getInstance( "MD5" );
md.update( source.getBytes() );
byte tmp[] = md.digest();
char str[] = new char[16 * 2];
int k = 0;
for (int i = 0; i < 16; i++) {
byte byte0 = tmp[i];
str[k++] = hexDigits[byte0 >>> 4 & 0xf];
str[k++] = hexDigits[byte0 & 0xf];
}
s = new String(str);
}
catch( Exception e ){
e.printStackTrace();
}
return s;
}
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