de.bb.security
Class Pem

java.lang.Object
  |
  +--de.bb.security.Pem

public class Pem

extends java.lang.Object

helper functions to maintain PEM files

Constructor Summary

Pem()

Method Summary

static byte[]	decode(byte[] b, int off, java.lang.String pwd) decodes the given byte block, needs an password for decryption
static byte[]	encode(byte[] b, java.lang.String name, int off, java.lang.String pwd, byte[] salt) encodes a given byte block, needs password for encryption
static boolean	needsPwd(byte[] b, int off) detects whether the given byte block needs an password for decryption

Methods inherited from class java.lang.Object

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

Constructor Detail

Pem

public Pem()

Method Detail

needsPwd

public static boolean needsPwd(byte[] b,
                               int off)

detects whether the given byte block needs an password for decryption

Parameters:

b - - input data

off - - offset into data

Returns:

true, when a password is required, either false.

decode

public static byte[] decode(byte[] b,
                            int off,
                            java.lang.String pwd)

decodes the given byte block, needs an password for decryption

Parameters:

b - - input data

off - - offset into data

pwd - - supplied password, sometimes needed

Returns:

a new allocated byte array, when decoding was successful, either null.

See Also:

needsPwd

encode

public static byte[] encode(byte[] b,
                            java.lang.String name,
                            int off,
                            java.lang.String pwd,
                            byte[] salt)

encodes a given byte block, needs password for encryption

Parameters:

b - - input data

name - - additional name for the encoded block: -----BEGIN

off - - offset into data

pwd - - supplied password, needed for encryption

salt - - a supplied salt, when null some salt is generated

Returns:

a new allocated byte array, when encoding was successful, either null.

See Also:

decode