49 lines
950 B
Java
49 lines
950 B
Java
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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public class HexUtil
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{
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public static void printHex(byte[] bytes)
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{
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for(byte b : bytes) System.out.print(byteToHex(b));
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}
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public static String byteToHex(byte data) {
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StringBuffer buf = new StringBuffer();
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buf.append(toHexChar((data >>> 4) & 0x0F));
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buf.append(toHexChar(data & 0x0F));
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return buf.toString();
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}
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public static char toHexChar(int i) {
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if ((0 <= i) && (i <= 9)) {
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return (char) ('0' + i);
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} else {
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return (char) ('a' + (i - 10));
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}
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}
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public static byte[] generateMD5(byte[] data)
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{
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try
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{
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byte[] md5 = MessageDigest.getInstance("MD5").digest(data);
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String m="";
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for(int i=0; i<md5.length; i++)
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{
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m = m + byteToHex(md5[i]).toUpperCase();
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}
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return m.getBytes();
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} catch (NoSuchAlgorithmException e)
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{
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// TODO Auto-generated catch block
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e.printStackTrace();
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return null;
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}
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}
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}
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