org.bouncycastle.bcpg
Class FingerprintUtil

java.lang.Object
  |
  +--org.bouncycastle.bcpg.FingerprintUtil

public class FingerprintUtil

extends java.lang.Object

Constructor Summary

FingerprintUtil()

Method Summary

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 java.lang.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 Detail

FingerprintUtil

public FingerprintUtil()

Method Detail

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 java.lang.String prettifyFingerprint(byte[] fingerprint)