de.alpharogroup.crypto.key.reader

Class PrivateKeyReader

java.lang.Object

de.alpharogroup.crypto.key.reader.PrivateKeyReader

public class PrivateKeyReader
extends Object

The class PrivateKeyReader is a utility class for reading private keys.

Field Summary

Fields

Modifier and Type	Field and Description
static String	BEGIN_PRIVATE_KEY_PREFIX The Constant BEGIN_PRIVATE_KEY_PREFIX.
static String	BEGIN_RSA_PRIVATE_KEY_PREFIX The Constant BEGIN_RSA_PRIVATE_KEY_PREFIX.
static String	END_PRIVATE_KEY_SUFFIX The Constant END_PRIVATE_KEY_SUFFIX.
static String	END_RSA_PRIVATE_KEY_SUFFIX The Constant END_RSA_PRIVATE_KEY_SUFFIX.
static String	RSA_PRIVATE_KEY The Constant RSA_PRIVATE_KEY.

Constructor Summary

Constructors

Constructor and Description
PrivateKeyReader()

Method Summary

Modifier and Type	Method and Description
static String	readPemFileAsBase64(File file) Read the private key from a pem file as base64 encoded String value.
static PrivateKey	readPemPrivateKey(File file, SecurityProvider securityProvider) Read pem private key.
static PrivateKey	readPrivateKey(byte[] privateKeyBytes, SecurityProvider securityProvider) Read private key.
static PrivateKey	readPrivateKey(byte[] privateKeyBytes, String provider) Read private key.
static PrivateKey	readPrivateKey(byte[] privateKeyBytes, String provider, String algorithm) Read private key.
static PrivateKey	readPrivateKey(File file) Read private key.
static PrivateKey	readPrivateKey(File file, SecurityProvider securityProvider) Read private key.
static PrivateKey	readPrivateKey(File file, String provider) Read private key.

Methods inherited from class java.lang.Object

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

Field Detail

RSA_PRIVATE_KEY

public static final String RSA_PRIVATE_KEY

The Constant RSA_PRIVATE_KEY.

See Also:

Constant Field Values

BEGIN_PRIVATE_KEY_PREFIX

public static final String BEGIN_PRIVATE_KEY_PREFIX

The Constant BEGIN_PRIVATE_KEY_PREFIX.

See Also:

Constant Field Values

END_PRIVATE_KEY_SUFFIX

public static final String END_PRIVATE_KEY_SUFFIX

The Constant END_PRIVATE_KEY_SUFFIX.

See Also:

Constant Field Values

BEGIN_RSA_PRIVATE_KEY_PREFIX

public static final String BEGIN_RSA_PRIVATE_KEY_PREFIX

The Constant BEGIN_RSA_PRIVATE_KEY_PREFIX.

See Also:

Constant Field Values

END_RSA_PRIVATE_KEY_SUFFIX

public static final String END_RSA_PRIVATE_KEY_SUFFIX

The Constant END_RSA_PRIVATE_KEY_SUFFIX.

See Also:

Constant Field Values

Constructor Detail

PrivateKeyReader

public PrivateKeyReader()

Method Detail

readPrivateKey

public static PrivateKey readPrivateKey(File file)
                                 throws IOException,
                                        NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

file - the file

Returns:

the private key

Throws:

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

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

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

readPrivateKey

public static PrivateKey readPrivateKey(File file,
                                        String provider)
                                 throws IOException,
                                        NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

file - the file

provider - the security provider

Returns:

the private key

Throws:

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

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

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

readPrivateKey

public static PrivateKey readPrivateKey(File file,
                                        SecurityProvider securityProvider)
                                 throws IOException,
                                        NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

file - the file

securityProvider - the security provider

Returns:

the private key

Throws:

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

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

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

readPrivateKey

public static PrivateKey readPrivateKey(byte[] privateKeyBytes,
                                        String provider)
                                 throws NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

privateKeyBytes - the private key bytes

provider - the provider

Returns:

the private key

Throws:

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

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

readPrivateKey

public static PrivateKey readPrivateKey(byte[] privateKeyBytes,
                                        String provider,
                                        String algorithm)
                                 throws NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

privateKeyBytes - the private key bytes

provider - the provider

algorithm - the algorithm for the KeyFactory

Returns:

the private key

Throws:

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

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.

readPemPrivateKey

public static PrivateKey readPemPrivateKey(File file,
                                           SecurityProvider securityProvider)
                                    throws Exception

Read pem private key.

Parameters:

file - the file

securityProvider - the security provider

Returns:

the private key

Throws:

Exception - is thrown if if a security error occur

readPemFileAsBase64

public static String readPemFileAsBase64(File file)
                                  throws IOException

Read the private key from a pem file as base64 encoded String value.

Parameters:

file - the file in pem format that contains the private key.

Returns:

the base64 encoded String value.

Throws:

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

readPrivateKey

public static PrivateKey readPrivateKey(byte[] privateKeyBytes,
                                        SecurityProvider securityProvider)
                                 throws NoSuchAlgorithmException,
                                        InvalidKeySpecException,
                                        NoSuchProviderException

Read private key.

Parameters:

privateKeyBytes - the private key bytes

securityProvider - the security provider

Returns:

the private key

Throws:

NoSuchAlgorithmException - the no such algorithm exception

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

NoSuchProviderException - is thrown if the specified provider is not registered in the security provider list.