io.getlime.security.powerauth.lib.cmd.util

Class EncryptedStorageUtil

java.lang.Object

io.getlime.security.powerauth.lib.cmd.util.EncryptedStorageUtil

public class EncryptedStorageUtil
extends Object

Utility class implementing processes related to data storage on client side.

Author:

Petr Dvorak

Constructor Summary

Constructors

Constructor and Description
EncryptedStorageUtil()

Method Summary

Modifier and Type	Method and Description
static SecretKey	getSignatureKnowledgeKey(char[] password, byte[] cSignatureKnowledgeSecretKeyBytes, byte[] salt, io.getlime.security.powerauth.crypto.lib.generator.KeyGenerator keyGenerator) Decrypt the KEY_SIGNATURE_KNOWLEDGE key using a provided password.
static byte[]	storeSignatureKnowledgeKey(char[] password, SecretKey signatureKnowledgeSecretKey, byte[] salt, io.getlime.security.powerauth.crypto.lib.generator.KeyGenerator keyGenerator) Encrypt the KEY_SIGNATURE_KNOWLEDGE key using a provided password.

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptedStorageUtil

public EncryptedStorageUtil()

Method Detail

storeSignatureKnowledgeKey

public static byte[] storeSignatureKnowledgeKey(char[] password,
                                                SecretKey signatureKnowledgeSecretKey,
                                                byte[] salt,
                                                io.getlime.security.powerauth.crypto.lib.generator.KeyGenerator keyGenerator)
                                         throws InvalidKeyException,
                                                io.getlime.security.powerauth.crypto.lib.model.exception.GenericCryptoException,
                                                io.getlime.security.powerauth.crypto.lib.model.exception.CryptoProviderException

Encrypt the KEY_SIGNATURE_KNOWLEDGE key using a provided password.

Parameters:

password - Password to be used for encryption.

signatureKnowledgeSecretKey - Original KEY_SIGNATURE_KNOWLEDGE key.

salt - Random salt.

keyGenerator - Key generator instance.

Returns:

Encrypted KEY_SIGNATURE_KNOWLEDGE using password and random salt.

Throws:

InvalidKeyException - In case invalid key is provided.

io.getlime.security.powerauth.crypto.lib.model.exception.CryptoProviderException - In case cryptography provider is initialized incorrectly.

io.getlime.security.powerauth.crypto.lib.model.exception.GenericCryptoException - In case any other cryptography error occurs.

getSignatureKnowledgeKey

public static SecretKey getSignatureKnowledgeKey(char[] password,
                                                 byte[] cSignatureKnowledgeSecretKeyBytes,
                                                 byte[] salt,
                                                 io.getlime.security.powerauth.crypto.lib.generator.KeyGenerator keyGenerator)
                                          throws InvalidKeyException,
                                                 io.getlime.security.powerauth.crypto.lib.model.exception.GenericCryptoException,
                                                 io.getlime.security.powerauth.crypto.lib.model.exception.CryptoProviderException

Decrypt the KEY_SIGNATURE_KNOWLEDGE key using a provided password.

Parameters:

password - Password to be used for decryption.

cSignatureKnowledgeSecretKeyBytes - Encrypted KEY_SIGNATURE_KNOWLEDGE key.

salt - Salt that was used for encryption.

keyGenerator - Key generator instance.

Returns:

Original KEY_SIGNATURE_KNOWLEDGE key.

Throws:

InvalidKeyException - In case invalid key is provided.

io.getlime.security.powerauth.crypto.lib.model.exception.CryptoProviderException - In case cryptography provider is initialized incorrectly.

io.getlime.security.powerauth.crypto.lib.model.exception.GenericCryptoException - In case any other cryptography error occurs.