Example #1
0
 /**
  * Create a new PeerID.
  *
  * @param b the ID
  * @param hash use the hash of b as ID?
  */
 public PeerID(byte[] b, boolean hash) {
   if (hash) {
     MessageDigest md = CryptoUtils.getMessageDigest();
     id = md.digest(b);
   } else {
     id = b;
   }
 }
Example #2
0
/**
 * PeerID ist an unique ID for every peer.
 *
 * @author Wolfgang Ginolas
 */
public class PeerID implements Comparable<PeerID>, Serializable {
  private static int idLen = CryptoUtils.getMessageDigest().getDigestLength();

  private byte[] id;

  /**
   * Create a new PeerID.
   *
   * @param b the ID
   * @param hash use the hash of b as ID?
   */
  public PeerID(byte[] b, boolean hash) {
    if (hash) {
      MessageDigest md = CryptoUtils.getMessageDigest();
      id = md.digest(b);
    } else {
      id = b;
    }
  }

  /**
   * Create a new PeerID
   *
   * @param addrStr the ID as Base64 String.
   */
  public PeerID(String addrStr) {
    id = Base64.decodeBase64(addrStr.getBytes());
  }

  /**
   * The length of PeerIDs.
   *
   * @return the length in bytes
   */
  public static int getIdLen() {
    return idLen;
  }

  /**
   * The ID as an byte array
   *
   * @return the bytes
   */
  public byte[] getId() {
    return id;
  }

  @Override
  public boolean equals(Object obj) {
    if (obj == null) {
      return false;
    }
    if (getClass() != obj.getClass()) {
      return false;
    }
    final PeerID other = (PeerID) obj;
    if (this.id != other.id && (this.id == null || !Arrays.equals(id, other.id))) {
      return false;
    }
    return true;
  }

  @Override
  public int hashCode() {
    return Arrays.hashCode(id);
  }

  public int compareTo(PeerID o) {
    int d = id.length - o.id.length;
    if (d != 0) return d;
    for (int i = 0; i < id.length; i++) {
      d = id[i] - o.id[i];
      if (d != 0) return d;
    }
    return 0;
  }

  @Override
  public String toString() {
    return new String(Base64.encodeBase64(id, false));
  }
}