The
MD5 Message-Digest Algorithm is a widely used cryptographic hash
function that produces a 128-bit (16-byte) hash value. Specified in
RFC 1321, MD5 has been employed in a wide variety of security
applications, and is also commonly used to check data integrity.
However, it has been shown that MD5 is not collision resistant; as
such, MD5 is not suitable for applications like SSL certificates or
digital signatures that rely on this property. An MD5 hash is
typically expressed as a 32-digit hexadecimal number.
package com.as400samplecode;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Hash {
public static void main(String[] args) {
String s = "SecretKey20111013000";
String res = md5(s);
System.out.println(res);
}
private static String md5(String s) { try {
// Create MD5 Hash
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
digest.update(s.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
for (int i=0; i<messageDigest.length; i++)
hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}
package com.as400samplecode;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Hash {
public static void main(String[] args) {
String s = "SecretKey20111013000";
String res = md5(s);
System.out.println(res);
}
private static String md5(String s) { try {
// Create MD5 Hash
MessageDigest digest = java.security.MessageDigest.getInstance("MD5");
digest.update(s.getBytes());
byte messageDigest[] = digest.digest();
// Create Hex String
StringBuffer hexString = new StringBuffer();
for (int i=0; i<messageDigest.length; i++)
hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
return hexString.toString();
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
}
return "";
}
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