Java SHA256 사용하기

package util;

import java.io.UnsupportedEncodingException;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class SHA256 {

public static String getSHA256(String input) {

StringBuffer result = new StringBuffer();

try {

MessageDigest digest = MessageDigest.getInstance("SHA-256");

byte[] salt = "oshU>'tZf;SSea1.6+o8#?F0%e)7?}".getBytes();

digest.reset();

digest.update(salt);

byte[] chars = digest.digest( input.getBytes("utf-8") );

for(int i =0; i<chars.length; i++) {

String hex = Integer.toHexString(0xFF & chars[i]);

if( hex.length() == 1 ) {

result.append('0');

}

result.append(hex);

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

System.out.println(e.toString());

}

return result.toString();

}

}