package httpserver;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

public class Hasher {

public boolean matches(byte[] input, String hash) {

return getHash(input).equals(hash);

}

public String getHash(byte[] input) {

try {

MessageDigest messageDigest = MessageDigest.getInstance("SHA1");

byte[] hash = messageDigest.digest(input);

return bytesToHex(hash);

} catch (NoSuchAlgorithmException e) {

throw new RuntimeException(e);

}

}

private String bytesToHex(byte[] hash) {

StringBuilder stringBuilder = new StringBuilder();

for (byte b : hash) {

stringBuilder.append(Integer.toString((b & 0xff) + 0x100, 16).substring(1));

}

return stringBuilder.toString();

}

}