de.alpharogroup.crypto.key.reader

Class EncryptedPrivateKeyReader

java.lang.Object

de.alpharogroup.crypto.key.reader.EncryptedPrivateKeyReader

public final class EncryptedPrivateKeyReader
extends Object

The class EncryptedPrivateKeyReader is a utility class for reading encrypted private keys that are protected with a password.

Constructor Summary

Constructors

Constructor and Description
EncryptedPrivateKeyReader()

Method Summary

Modifier and Type	Method and Description
static KeyPair	getKeyPair(File encryptedPrivateKeyFile, String password) Reads from the given File that contains the password protected KeyPair and returns it
static PrivateKey	readPasswordProtectedPrivateKey(byte[] encryptedPrivateKeyBytes, String password, String algorithm) Reads the given byte array that contains a password protected private key.
static PrivateKey	readPasswordProtectedPrivateKey(File encryptedPrivateKeyFile, String password) Reads the given File that contains a password protected private key.
static PrivateKey	readPasswordProtectedPrivateKey(File encryptedPrivateKeyFile, String password, String algorithm) Reads from the given File that contains the password protected private key and returns it

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptedPrivateKeyReader

public EncryptedPrivateKeyReader()

Method Detail

readPasswordProtectedPrivateKey

public static PrivateKey readPasswordProtectedPrivateKey(byte[] encryptedPrivateKeyBytes,
                                                         String password,
                                                         String algorithm)
                                                  throws IOException,
                                                         NoSuchAlgorithmException,
                                                         NoSuchPaddingException,
                                                         InvalidKeySpecException,
                                                         InvalidKeyException,
                                                         InvalidAlgorithmParameterException

Reads the given byte array that contains a password protected private key.

Parameters:

encryptedPrivateKeyBytes - the byte array that contains the password protected private key

password - the password

algorithm - the algorithm

Returns:

the PrivateKey object

Throws:

IOException - Signals that an I/O exception has occurred.

NoSuchAlgorithmException - is thrown if instantiation of the SecretKeyFactory object fails.

NoSuchPaddingException - the no such padding exception

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.

InvalidKeyException - is thrown if initialization of the cipher object fails.

InvalidAlgorithmParameterException - is thrown if initialization of the cipher object fails.

readPasswordProtectedPrivateKey

public static PrivateKey readPasswordProtectedPrivateKey(File encryptedPrivateKeyFile,
                                                         String password,
                                                         String algorithm)
                                                  throws IOException,
                                                         NoSuchAlgorithmException,
                                                         NoSuchPaddingException,
                                                         InvalidKeySpecException,
                                                         InvalidKeyException,
                                                         InvalidAlgorithmParameterException

Reads from the given File that contains the password protected private key and returns it

Parameters:

encryptedPrivateKeyFile - the file that contains the password protected private key

password - the password

algorithm - the algorithm

Returns:

the PrivateKey object

Throws:

IOException - Signals that an I/O exception has occurred.

NoSuchAlgorithmException - is thrown if instantiation of the SecretKeyFactory object fails.

NoSuchPaddingException - the no such padding exception

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.

InvalidKeyException - is thrown if initialization of the cipher object fails.

InvalidAlgorithmParameterException - is thrown if initialization of the cipher object fails.

getKeyPair

public static KeyPair getKeyPair(File encryptedPrivateKeyFile,
                                 String password)
                          throws FileNotFoundException,
                                 IOException,
                                 org.bouncycastle.openssl.PEMException

Reads from the given File that contains the password protected KeyPair and returns it

Parameters:

encryptedPrivateKeyFile - the file that contains the password protected KeyPair

password - the password

Returns:

the key pair

Throws:

FileNotFoundException - is thrown if the file did not found

IOException - Signals that an I/O exception has occurred.

org.bouncycastle.openssl.PEMException - is thrown if an error occurs on read the pem file

readPasswordProtectedPrivateKey

public static PrivateKey readPasswordProtectedPrivateKey(File encryptedPrivateKeyFile,
                                                         String password)
                                                  throws IOException,
                                                         NoSuchAlgorithmException,
                                                         NoSuchPaddingException,
                                                         InvalidKeySpecException,
                                                         InvalidKeyException,
                                                         InvalidAlgorithmParameterException

Reads the given File that contains a password protected private key.

Parameters:

encryptedPrivateKeyFile - the file that contains the password protected private key

password - the password

Returns:

the PrivateKey object

Throws:

IOException - Signals that an I/O exception has occurred.

NoSuchAlgorithmException - is thrown if instantiation of the SecretKeyFactory object fails.

NoSuchPaddingException - the no such padding exception

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.

InvalidKeyException - is thrown if initialization of the cipher object fails.

InvalidAlgorithmParameterException - is thrown if initialization of the cipher object fails.