1 files changed, 0 insertions, 143 deletions
diff --git a/src/main/java/org/whispersystems/libaxolotl/util/KeyHelper.java b/src/main/java/org/whispersystems/libaxolotl/util/KeyHelper.java
deleted file mode 100644
index 96ee6563..00000000
--- a/src/main/java/org/whispersystems/libaxolotl/util/KeyHelper.java
+++ /dev/null
@@ -1,143 +0,0 @@
-package org.whispersystems.libaxolotl.util;
-
-import org.whispersystems.libaxolotl.IdentityKey;
-import org.whispersystems.libaxolotl.IdentityKeyPair;
-import org.whispersystems.libaxolotl.InvalidKeyException;
-import org.whispersystems.libaxolotl.ecc.Curve;
-import org.whispersystems.libaxolotl.ecc.ECKeyPair;
-import org.whispersystems.libaxolotl.state.PreKeyRecord;
-import org.whispersystems.libaxolotl.state.SignedPreKeyRecord;
-
-import java.security.NoSuchAlgorithmException;
-import java.security.SecureRandom;
-import java.util.LinkedList;
-import java.util.List;
-
-/**
- * Helper class for generating keys of different types.
- *
- * @author Moxie Marlinspike
- */
-public class KeyHelper {
-
-  private KeyHelper() {}
-
-  /**
-   * Generate an identity key pair.  Clients should only do this once,
-   * at install time.
-   *
-   * @return the generated IdentityKeyPair.
-   */
-  public static IdentityKeyPair generateIdentityKeyPair() {
-    ECKeyPair   keyPair   = Curve.generateKeyPair();
-    IdentityKey publicKey = new IdentityKey(keyPair.getPublicKey());
-    return new IdentityKeyPair(publicKey, keyPair.getPrivateKey());
-  }
-
-  /**
-   * Generate a registration ID.  Clients should only do this once,
-   * at install time.
-   *
-   * @param extendedRange By default (false), the generated registration
-   *                      ID is sized to require the minimal possible protobuf
-   *                      encoding overhead. Specify true if the caller needs
-   *                      the full range of MAX_INT at the cost of slightly
-   *                      higher encoding overhead.
-   * @return the generated registration ID.
-   */
-  public static int generateRegistrationId(boolean extendedRange) {
-    try {
-      SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
-      if (extendedRange) return secureRandom.nextInt(Integer.MAX_VALUE - 1) + 1;
-      else               return secureRandom.nextInt(16380) + 1;
-    } catch (NoSuchAlgorithmException e) {
-      throw new AssertionError(e);
-    }
-  }
-
-  public static int getRandomSequence(int max) {
-    try {
-      return SecureRandom.getInstance("SHA1PRNG").nextInt(max);
-    } catch (NoSuchAlgorithmException e) {
-      throw new AssertionError(e);
-    }
-  }
-
-  /**
-   * Generate a list of PreKeys.  Clients should do this at install time, and
-   * subsequently any time the list of PreKeys stored on the server runs low.
-   * <p>
-   * PreKey IDs are shorts, so they will eventually be repeated.  Clients should
-   * store PreKeys in a circular buffer, so that they are repeated as infrequently
-   * as possible.
-   *
-   * @param start The starting PreKey ID, inclusive.
-   * @param count The number of PreKeys to generate.
-   * @return the list of generated PreKeyRecords.
-   */
-  public static List<PreKeyRecord> generatePreKeys(int start, int count) {
-    List<PreKeyRecord> results = new LinkedList<>();
-
-    start--;
-
-    for (int i=0;i<count;i++) {
-      results.add(new PreKeyRecord(((start + i) % (Medium.MAX_VALUE-1)) + 1, Curve.generateKeyPair()));
-    }
-
-    return results;
-  }
-
-  /**
-   * Generate the last resort PreKey.  Clients should do this only once, at install
-   * time, and durably store it for the length of the install.
-   *
-   * @return the generated last resort PreKeyRecord.
-   */
-  public static PreKeyRecord generateLastResortPreKey() {
-    ECKeyPair keyPair = Curve.generateKeyPair();
-    return new PreKeyRecord(Medium.MAX_VALUE, keyPair);
-  }
-
-  /**
-   * Generate a signed PreKey
-   *
-   * @param identityKeyPair The local client's identity key pair.
-   * @param signedPreKeyId The PreKey id to assign the generated signed PreKey
-   *
-   * @return the generated signed PreKey
-   * @throws InvalidKeyException when the provided identity key is invalid
-   */
-  public static SignedPreKeyRecord generateSignedPreKey(IdentityKeyPair identityKeyPair, int signedPreKeyId)
-      throws InvalidKeyException
-  {
-    ECKeyPair keyPair   = Curve.generateKeyPair();
-    byte[]    signature = Curve.calculateSignature(identityKeyPair.getPrivateKey(), keyPair.getPublicKey().serialize());
-
-    return new SignedPreKeyRecord(signedPreKeyId, System.currentTimeMillis(), keyPair, signature);
-  }
-
-
-  public static ECKeyPair generateSenderSigningKey() {
-    return Curve.generateKeyPair();
-  }
-
-  public static byte[] generateSenderKey() {
-    try {
-      byte[] key = new byte[32];
-      SecureRandom.getInstance("SHA1PRNG").nextBytes(key);
-
-      return key;
-    } catch (NoSuchAlgorithmException e) {
-      throw new AssertionError(e);
-    }
-  }
-
-  public static int generateSenderKeyId() {
-    try {
-      return SecureRandom.getInstance("SHA1PRNG").nextInt(Integer.MAX_VALUE);
-    } catch (NoSuchAlgorithmException e) {
-      throw new AssertionError(e);
-    }
-  }
-
-}