Digest

/*
   Class Digest
   This class creates MD5 digest with hex string from input string.
   2012.12.07
*/

import java.security.*;
import java.lang.*;

public class Digest{

	public String encrypt(String raw){

		byte[] in = raw.getBytes();  // convert raw text to byte
		String temp = new String();  // use for temporaly
		StringBuffer sb = new StringBuffer();  // create hex string
		byte[] out = null;  // store MD5 encrypted data from input text

		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(raw.getBytes());
			out = md.digest();
			
			for (int i = 0;i < out.length;i = i + 1){
				if (out[i] < 0){
					temp = Integer.toHexString(out[i] + 256);
				} else {
					temp = Integer.toHexString(out[i]);
				}
				sb.append(temp);
			}
		} catch (NoSuchAlgorithmException e) {
			System.out.println("no such Algorism");
		}
		return sb.toString();
	}
}
MD5ハッシュ化クラス
