de.alpharogroup.crypto.key

Class KeyExtensions

java.lang.Object

de.alpharogroup.crypto.key.KeyExtensions

public class KeyExtensions
extends Object

The class KeyExtensions holds utility methods for read public and private keys from files.

Field Summary

Fields

Modifier and Type	Field and Description
static int	AES_KEY_LENGTH The Constant AES_KEY_LENGTH.
static String	BEGIN_PRIVATE_KEY_PREFIX The Constant BEGIN_PRIVATE_KEY_PREFIX.
static String	BEGIN_PUBLIC_KEY_PREFIX The Constant BEGIN_PUBLIC_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_PUBLIC_KEY_SUFFIX The Constant END_PUBLIC_KEY_SUFFIX.
static String	END_RSA_PRIVATE_KEY_SUFFIX The Constant END_RSA_PRIVATE_KEY_SUFFIX.

Constructor Summary

Constructors

Constructor and Description
KeyExtensions()

Method Summary

Modifier and Type	Method and Description
static org.bouncycastle.util.io.pem.PemObject	getPemObject(File file) Gets the pem object.
static PrivateKey	readPemPrivateKey(File file, de.alpharogroup.crypto.provider.SecurityProvider securityProvider) Read pem private key.
static PublicKey	readPemPublicKey(File file) reads a public key from a file.
static PublicKey	readPemPublicKey(File file, de.alpharogroup.crypto.provider.SecurityProvider securityProvider) reads a public key from a file.
static PrivateKey	readPrivateKey(byte[] privateKeyBytes, de.alpharogroup.crypto.provider.SecurityProvider securityProvider) Read private key.
static PrivateKey	readPrivateKey(byte[] privateKeyBytes, String provider) Read private key.
static PrivateKey	readPrivateKey(File file) Read private key.
static PublicKey	readPublicKey(byte[] publicKeyBytes, de.alpharogroup.crypto.provider.SecurityProvider securityProvider) Read public key.
static PublicKey	readPublicKey(byte[] publicKeyBytes, String provider) Read public key.
static PublicKey	readPublicKey(File file) Read public key.

Methods inherited from class java.lang.Object

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

Field Detail

AES_KEY_LENGTH

public static final int AES_KEY_LENGTH

The Constant AES_KEY_LENGTH.

See Also:

Constant Field Values

END_PUBLIC_KEY_SUFFIX

public static final String END_PUBLIC_KEY_SUFFIX

The Constant END_PUBLIC_KEY_SUFFIX.

See Also:

Constant Field Values

BEGIN_PUBLIC_KEY_PREFIX

public static final String BEGIN_PUBLIC_KEY_PREFIX

The Constant BEGIN_PUBLIC_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_PRIVATE_KEY_PREFIX

public static final String BEGIN_PRIVATE_KEY_PREFIX

The Constant BEGIN_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

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

Constructor Detail

KeyExtensions

public KeyExtensions()

Method Detail

getPemObject

public static org.bouncycastle.util.io.pem.PemObject getPemObject(File file)
                                                           throws IOException

Gets the pem object.

Parameters:

file - the file

Returns:

the pem object

Throws:

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

readPublicKey

public static PublicKey readPublicKey(File file)
                               throws IOException,
                                      NoSuchAlgorithmException,
                                      InvalidKeySpecException,
                                      NoSuchProviderException

Read public key.

Parameters:

file - the file

Returns:

the public 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.

readPublicKey

public static PublicKey readPublicKey(byte[] publicKeyBytes,
                                      de.alpharogroup.crypto.provider.SecurityProvider securityProvider)
                               throws NoSuchAlgorithmException,
                                      InvalidKeySpecException,
                                      NoSuchProviderException

Read public key.

Parameters:

publicKeyBytes - the public key bytes

securityProvider - the security provider

Returns:

the public 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.

readPublicKey

public static PublicKey readPublicKey(byte[] publicKeyBytes,
                                      String provider)
                               throws NoSuchAlgorithmException,
                                      InvalidKeySpecException,
                                      NoSuchProviderException

Read public key.

Parameters:

publicKeyBytes - the public key bytes

provider - the provider

Returns:

the public 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(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(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.

readPemPrivateKey

public static PrivateKey readPemPrivateKey(File file,
                                           de.alpharogroup.crypto.provider.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

readPrivateKey

public static PrivateKey readPrivateKey(byte[] privateKeyBytes,
                                        de.alpharogroup.crypto.provider.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.

readPemPublicKey

public static PublicKey readPemPublicKey(File file,
                                         de.alpharogroup.crypto.provider.SecurityProvider securityProvider)
                                  throws Exception

reads a public key from a file.

Parameters:

file - the file

securityProvider - the security provider

Returns:

the public key

Throws:

Exception - is thrown if if a security error occur

readPemPublicKey

public static PublicKey readPemPublicKey(File file)
                                  throws Exception

reads a public key from a file.

Parameters:

file - the file

Returns:

the public key

Throws:

Exception - is thrown if if a security error occur