1 files changed, 0 insertions, 232 deletions
diff --git a/mobile/android/services/src/main/java/org/mozilla/gecko/sync/crypto/CryptoInfo.java b/mobile/android/services/src/main/java/org/mozilla/gecko/sync/crypto/CryptoInfo.java
deleted file mode 100644
index 355571c6a..000000000
--- a/mobile/android/services/src/main/java/org/mozilla/gecko/sync/crypto/CryptoInfo.java
+++ /dev/null
@@ -1,232 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-package org.mozilla.gecko.sync.crypto;
-
-import java.security.GeneralSecurityException;
-import java.security.InvalidKeyException;
-import java.security.NoSuchAlgorithmException;
-import java.util.Arrays;
-
-import javax.crypto.BadPaddingException;
-import javax.crypto.Cipher;
-import javax.crypto.IllegalBlockSizeException;
-import javax.crypto.Mac;
-import javax.crypto.NoSuchPaddingException;
-import javax.crypto.spec.IvParameterSpec;
-import javax.crypto.spec.SecretKeySpec;
-
-import org.mozilla.apache.commons.codec.binary.Base64;
-
-/*
- * All info in these objects should be decoded (i.e. not BaseXX encoded).
- */
-public class CryptoInfo {
-  private static final String TRANSFORMATION     = "AES/CBC/PKCS5Padding";
-  private static final String KEY_ALGORITHM_SPEC = "AES";
-
-  private byte[] message;
-  private byte[] iv;
-  private byte[] hmac;
-  private KeyBundle keys;
-
-  /**
-   * Return a CryptoInfo with given plaintext encrypted using given keys.
-   */
-  public static CryptoInfo encrypt(byte[] plaintextBytes, KeyBundle keys) throws CryptoException {
-    CryptoInfo info = new CryptoInfo(plaintextBytes, keys);
-    info.encrypt();
-    return info;
-  }
-
-  /**
-   * Return a CryptoInfo with given plaintext encrypted using given keys and initial vector.
-   */
-  public static CryptoInfo encrypt(byte[] plaintextBytes, byte[] iv, KeyBundle keys) throws CryptoException {
-    CryptoInfo info = new CryptoInfo(plaintextBytes, iv, null, keys);
-    info.encrypt();
-    return info;
-  }
-
-  /**
-   * Return a CryptoInfo with given ciphertext decrypted using given keys and initial vector, verifying that given HMAC validates.
-   */
-  public static CryptoInfo decrypt(byte[] ciphertext, byte[] iv, byte[] hmac, KeyBundle keys) throws CryptoException {
-    CryptoInfo info = new CryptoInfo(ciphertext, iv, hmac, keys);
-    info.decrypt();
-    return info;
-  }
-
-  /*
-   * Constructor typically used when encrypting.
-   */
-  public CryptoInfo(byte[] message, KeyBundle keys) {
-    this.setMessage(message);
-    this.setKeys(keys);
-  }
-
-  /*
-   * Constructor typically used when decrypting.
-   */
-  public CryptoInfo(byte[] message, byte[] iv, byte[] hmac, KeyBundle keys) {
-    this.setMessage(message);
-    this.setIV(iv);
-    this.setHMAC(hmac);
-    this.setKeys(keys);
-  }
-
-  public byte[] getMessage() {
-    return message;
-  }
-
-  public void setMessage(byte[] message) {
-    this.message = message;
-  }
-
-  public byte[] getIV() {
-    return iv;
-  }
-
-  public void setIV(byte[] iv) {
-    this.iv = iv;
-  }
-
-  public byte[] getHMAC() {
-    return hmac;
-  }
-
-  public void setHMAC(byte[] hmac) {
-    this.hmac = hmac;
-  }
-
-  public KeyBundle getKeys() {
-    return keys;
-  }
-
-  public void setKeys(KeyBundle keys) {
-    this.keys = keys;
-  }
-
-  /*
-   * Generate HMAC for given cipher text.
-   */
-  public static byte[] generatedHMACFor(byte[] message, KeyBundle keys) throws NoSuchAlgorithmException, InvalidKeyException {
-    Mac hmacHasher = HKDF.makeHMACHasher(keys.getHMACKey());
-    return hmacHasher.doFinal(Base64.encodeBase64(message));
-  }
-
-  /*
-   * Return true if generated HMAC is the same as the specified HMAC.
-   */
-  public boolean generatedHMACIsHMAC() throws NoSuchAlgorithmException, InvalidKeyException {
-    byte[] generatedHMAC = generatedHMACFor(getMessage(), getKeys());
-    byte[] expectedHMAC  = getHMAC();
-    return Arrays.equals(generatedHMAC, expectedHMAC);
-  }
-
-  /**
-   * Performs functionality common to both encryption and decryption.
-   *
-   * @param cipher
-   * @param inputMessage non-BaseXX-encoded message
-   * @return encrypted/decrypted message
-   * @throws CryptoException
-   */
-  private static byte[] commonCrypto(Cipher cipher, byte[] inputMessage)
-                        throws CryptoException {
-    byte[] outputMessage = null;
-    try {
-      outputMessage = cipher.doFinal(inputMessage);
-    } catch (IllegalBlockSizeException | BadPaddingException e) {
-      throw new CryptoException(e);
-    }
-      return outputMessage;
-  }
-
-  /**
-   * Encrypt a CryptoInfo in-place.
-   *
-   * @throws CryptoException
-   */
-  public void encrypt() throws CryptoException {
-
-    Cipher cipher = CryptoInfo.getCipher(TRANSFORMATION);
-    try {
-      byte[] encryptionKey = getKeys().getEncryptionKey();
-      SecretKeySpec spec = new SecretKeySpec(encryptionKey, KEY_ALGORITHM_SPEC);
-
-      // If no IV is provided, we allow the cipher to provide one.
-      if (getIV() == null || getIV().length == 0) {
-        cipher.init(Cipher.ENCRYPT_MODE, spec);
-      } else {
-        cipher.init(Cipher.ENCRYPT_MODE, spec, new IvParameterSpec(getIV()));
-      }
-    } catch (GeneralSecurityException ex) {
-      throw new CryptoException(ex);
-    }
-
-    // Encrypt.
-    byte[] encryptedBytes = commonCrypto(cipher, getMessage());
-    byte[] iv = cipher.getIV();
-
-    byte[] hmac;
-    // Generate HMAC.
-    try {
-      hmac = generatedHMACFor(encryptedBytes, keys);
-    } catch (NoSuchAlgorithmException | InvalidKeyException e) {
-      throw new CryptoException(e);
-    }
-
-    // Update in place.  keys is already set.
-    this.setHMAC(hmac);
-    this.setIV(iv);
-    this.setMessage(encryptedBytes);
-  }
-
-  /**
-   * Decrypt a CryptoInfo in-place.
-   *
-   * @throws CryptoException
-   */
-  public void decrypt() throws CryptoException {
-
-    // Check HMAC.
-    try {
-      if (!generatedHMACIsHMAC()) {
-        throw new HMACVerificationException();
-      }
-    } catch (NoSuchAlgorithmException | InvalidKeyException e) {
-      throw new CryptoException(e);
-    }
-
-    Cipher cipher = CryptoInfo.getCipher(TRANSFORMATION);
-    try {
-      byte[] encryptionKey = getKeys().getEncryptionKey();
-      SecretKeySpec spec = new SecretKeySpec(encryptionKey, KEY_ALGORITHM_SPEC);
-      cipher.init(Cipher.DECRYPT_MODE, spec, new IvParameterSpec(getIV()));
-    } catch (GeneralSecurityException ex) {
-      throw new CryptoException(ex);
-    }
-    byte[] decryptedBytes = commonCrypto(cipher, getMessage());
-    byte[] iv = cipher.getIV();
-
-    // Update in place.  keys is already set.
-    this.setHMAC(null);
-    this.setIV(iv);
-    this.setMessage(decryptedBytes);
-  }
-
-  /**
-   * Helper to get a Cipher object.
-   *
-   * @param transformation The type of Cipher to get.
-   */
-  private static Cipher getCipher(String transformation) throws CryptoException {
-    try {
-      return Cipher.getInstance(transformation);
-    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
-      throw new CryptoException(e);
-    }
-  }
-}