1 files changed, 0 insertions, 91 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/crypto/sasl/DigestMd5.java b/src/main/java/de/thedevstack/conversationsplus/crypto/sasl/DigestMd5.java
deleted file mode 100644
index f4c3f28e..00000000
--- a/src/main/java/de/thedevstack/conversationsplus/crypto/sasl/DigestMd5.java
+++ /dev/null
@@ -1,91 +0,0 @@
-package de.thedevstack.conversationsplus.crypto.sasl;
-
-import android.util.Base64;
-
-import java.math.BigInteger;
-import java.nio.charset.Charset;
-import java.security.MessageDigest;
-import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-
-import de.thedevstack.conversationsplus.entities.Account;
-import de.thedevstack.conversationsplus.utils.CryptoHelper;
-import de.thedevstack.conversationsplus.xml.TagWriter;
-
-public class DigestMd5 extends SaslMechanism {
-	public DigestMd5(final TagWriter tagWriter, final Account account, final SecureRandom rng) {
-		super(tagWriter, account, rng);
-	}
-
-	@Override
-	public int getPriority() {
-		return 10;
-	}
-
-	@Override
-	public String getMechanism() {
-		return "DIGEST-MD5";
-	}
-
-	private State state = State.INITIAL;
-
-	@Override
-	public String getResponse(final String challenge) throws AuthenticationException {
-		switch (state) {
-			case INITIAL:
-				state = State.RESPONSE_SENT;
-				final String encodedResponse;
-				try {
-					final Tokenizer tokenizer = new Tokenizer(Base64.decode(challenge, Base64.DEFAULT));
-					String nonce = "";
-					for (final String token : tokenizer) {
-						final String[] parts = token.split("=", 2);
-						if (parts[0].equals("nonce")) {
-							nonce = parts[1].replace("\"", "");
-						} else if (parts[0].equals("rspauth")) {
-							return "";
-						}
-					}
-					final String digestUri = "xmpp/" + account.getServer();
-					final String nonceCount = "00000001";
-					final String x = account.getUsername() + ":" + account.getServer() + ":"
-						+ account.getPassword();
-					final MessageDigest md = MessageDigest.getInstance("MD5");
-					final byte[] y = md.digest(x.getBytes(Charset.defaultCharset()));
-					final String cNonce = new BigInteger(100, rng).toString(32);
-					final byte[] a1 = CryptoHelper.concatenateByteArrays(y,
-							(":" + nonce + ":" + cNonce).getBytes(Charset.defaultCharset()));
-					final String a2 = "AUTHENTICATE:" + digestUri;
-					final String ha1 = CryptoHelper.bytesToHex(md.digest(a1));
-					final String ha2 = CryptoHelper.bytesToHex(md.digest(a2.getBytes(Charset
-									.defaultCharset())));
-					final String kd = ha1 + ":" + nonce + ":" + nonceCount + ":" + cNonce
-						+ ":auth:" + ha2;
-					final String response = CryptoHelper.bytesToHex(md.digest(kd.getBytes(Charset
-									.defaultCharset())));
-					final String saslString = "username=\"" + account.getUsername()
-						+ "\",realm=\"" + account.getServer() + "\",nonce=\""
-						+ nonce + "\",cnonce=\"" + cNonce + "\",nc=" + nonceCount
-						+ ",qop=auth,digest-uri=\"" + digestUri + "\",response="
-						+ response + ",charset=utf-8";
-					encodedResponse = Base64.encodeToString(
-							saslString.getBytes(Charset.defaultCharset()),
-							Base64.NO_WRAP);
-				} catch (final NoSuchAlgorithmException e) {
-					throw new AuthenticationException(e);
-				}
-
-				return encodedResponse;
-			case RESPONSE_SENT:
-				state = State.VALID_SERVER_RESPONSE;
-				break;
-			case VALID_SERVER_RESPONSE:
-				if (challenge==null) {
-					return null; //everything is fine
-				}
-			default:
-				throw new InvalidStateException(state);
-		}
-		return null;
-	}
-}