Package org.bouncycastle.bcpg

Class FingerprintUtil

java.lang.Object
org.bouncycastle.bcpg.FingerprintUtil
public class FingerprintUtil extends Object

  • Constructor Summary

    Constructors
    Constructor
    Description
    FingerprintUtil()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static long
    keyIdFromFingerprint(int keyVersion, byte[] fingerprint)
    Derive a key-id from the given key fingerprint.
    static long
    keyIdFromLibrePgpFingerprint(byte[] v5Fingerprint)
    Derive a 64 bit key-id from a version 5 LibrePGP fingerprint.
    static long
    keyIdFromV4Fingerprint(byte[] v4Fingerprint)
    Derive a 64 bit key-id from a version 4 OpenPGP fingerprint.
    static long
    keyIdFromV6Fingerprint(byte[] v6Fingerprint)
    Derive a 64 bit key-id from a version 6 OpenPGP fingerprint.
    static long
    longFromLeftMostBytes(byte[] bytes)
    Convert the left-most 8 bytes from the given array to a long.
    static long
    longFromRightMostBytes(byte[] bytes)
    Convert the right-most 8 bytes from the given array to a long.
    static String
    prettifyFingerprint(byte[] fingerprint)
     
    static long
    readKeyID(byte[] bytes)
    Read a key-ID from the first 8 octets of the given byte array.
    static long
    readKeyID(byte[] bytes, int offset)
    Read a key-ID from 8 octets of the given byte array starting at offset.
    static void
    writeKeyID(long keyID, byte[] bytes)
    Write the key-ID to the first 8 octets of the given byte array.
    static void
    writeKeyID(long keyID, byte[] bytes, int offset)
    Write the key-ID encoded as 8 octets to the given byte array, starting at index offset.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • FingerprintUtil

      public FingerprintUtil()

  • Method Details

    • keyIdFromFingerprint

      public static long keyIdFromFingerprint(int keyVersion, byte[] fingerprint)
      Derive a key-id from the given key fingerprint. This method can derive key-ids from v4, v5 (LibrePGP) and v6 keys. For keys with other versions (2,3) it will return 0.
      Parameters:
      keyVersion - version of the key
      fingerprint - fingerprint of the key
      Returns:
      derived key-id

    • keyIdFromV6Fingerprint

      public static long keyIdFromV6Fingerprint(byte[] v6Fingerprint)
      Derive a 64 bit key-id from a version 6 OpenPGP fingerprint. For v6 keys, the key-id corresponds to the left-most 8 octets of the fingerprint.
      Parameters:
      v6Fingerprint - 32 byte fingerprint
      Returns:
      key-id

    • keyIdFromLibrePgpFingerprint

      public static long keyIdFromLibrePgpFingerprint(byte[] v5Fingerprint)
      Derive a 64 bit key-id from a version 5 LibrePGP fingerprint. For such keys, the key-id corresponds to the left-most 8 octets of the fingerprint.
      Parameters:
      v5Fingerprint - 32 byte fingerprint
      Returns:
      key-id

    • keyIdFromV4Fingerprint

      public static long keyIdFromV4Fingerprint(byte[] v4Fingerprint)
      Derive a 64 bit key-id from a version 4 OpenPGP fingerprint. For v4 keys, the key-id corresponds to the right-most 8 octets of the fingerprint.
      Parameters:
      v4Fingerprint - 20 byte fingerprint
      Returns:
      key-id

    • longFromLeftMostBytes

      public static long longFromLeftMostBytes(byte[] bytes)
      Convert the left-most 8 bytes from the given array to a long.
      Parameters:
      bytes - bytes
      Returns:
      long

    • longFromRightMostBytes

      public static long longFromRightMostBytes(byte[] bytes)
      Convert the right-most 8 bytes from the given array to a long.
      Parameters:
      bytes - bytes
      Returns:
      long

    • readKeyID

      public static long readKeyID(byte[] bytes)
      Read a key-ID from the first 8 octets of the given byte array.
      Parameters:
      bytes - byte array
      Returns:
      key-ID

    • readKeyID

      public static long readKeyID(byte[] bytes, int offset)
      Read a key-ID from 8 octets of the given byte array starting at offset.
      Parameters:
      bytes - byte array
      offset - offset
      Returns:
      key-ID

    • writeKeyID

      public static void writeKeyID(long keyID, byte[] bytes, int offset)
      Write the key-ID encoded as 8 octets to the given byte array, starting at index offset.
      Parameters:
      keyID - keyID
      bytes - byte array
      offset - starting offset

    • writeKeyID

      public static void writeKeyID(long keyID, byte[] bytes)
      Write the key-ID to the first 8 octets of the given byte array.
      Parameters:
      keyID - keyID
      bytes - byte array

    • prettifyFingerprint

      public static String prettifyFingerprint(byte[] fingerprint)