io.getlime.security.powerauth.provider

Class CryptoProviderUtilsSpongyCastle

java.lang.Object

io.getlime.security.powerauth.provider.CryptoProviderUtilsSpongyCastle

All Implemented Interfaces:

CryptoProviderUtil

public class CryptoProviderUtilsSpongyCastle
extends Object
implements CryptoProviderUtil

Crypto provider based on SpongyCastle crypto provider.

Author:

Petr Dvorak

Constructor Summary

Constructors

Constructor and Description
CryptoProviderUtilsSpongyCastle()

Method Summary

Modifier and Type	Method and Description
PrivateKey	convertBytesToPrivateKey(byte[] keyBytes) Convert a byte array to an EC private key by decoding the D number parameter.
PublicKey	convertBytesToPublicKey(byte[] keyBytes) Converts byte array to an EC public key, by decoding the Q point parameter.
SecretKey	convertBytesToSharedSecretKey(byte[] bytesSecretKey) Converts a byte array to the secret shared key (usually used for AES based operations).
byte[]	convertPrivateKeyToBytes(PrivateKey privateKey) Converts an EC private key to bytes by encoding the D number parameter.
byte[]	convertPublicKeyToBytes(PublicKey publicKey) Converts an EC public key to a byte array by encoding Q point parameter.
byte[]	convertSharedSecretKeyToBytes(SecretKey sharedSecretKey) Converts a shared secret key (usually used for AES based operations) to a byte array.
String	getProviderName() Get the provider name, for example "BC" for Bouncy Castle.

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptoProviderUtilsSpongyCastle

public CryptoProviderUtilsSpongyCastle()

Method Detail

getProviderName

public String getProviderName()

Get the provider name, for example "BC" for Bouncy Castle.

Specified by:

getProviderName in interface CryptoProviderUtil

Returns:

Name of the provider, for example "BC" for Bouncy Castle.

convertPublicKeyToBytes

public byte[] convertPublicKeyToBytes(PublicKey publicKey)

Converts an EC public key to a byte array by encoding Q point parameter.

Specified by:

convertPublicKeyToBytes in interface CryptoProviderUtil

Parameters:

publicKey - An EC public key to be converted.

Returns:

A byte array representation of the EC public key.

convertBytesToPublicKey

public PublicKey convertBytesToPublicKey(byte[] keyBytes)
                                  throws InvalidKeySpecException,
                                         CryptoProviderException

Converts byte array to an EC public key, by decoding the Q point parameter.

Specified by:

convertBytesToPublicKey in interface CryptoProviderUtil

Parameters:

keyBytes - Bytes to be converted to EC public key.

Returns:

An instance of the EC public key on success, or null on failure.

Throws:

InvalidKeySpecException - When provided bytes are not a correct key representation.

CryptoProviderException - When crypto provider is incorrectly initialized.

convertPrivateKeyToBytes

public byte[] convertPrivateKeyToBytes(PrivateKey privateKey)

Converts an EC private key to bytes by encoding the D number parameter.

Specified by:

convertPrivateKeyToBytes in interface CryptoProviderUtil

Parameters:

privateKey - An EC private key to be converted to bytes.

Returns:

A byte array containing the representation of the EC private key.

convertBytesToPrivateKey

public PrivateKey convertBytesToPrivateKey(byte[] keyBytes)
                                    throws InvalidKeySpecException,
                                           CryptoProviderException

Convert a byte array to an EC private key by decoding the D number parameter.

Specified by:

convertBytesToPrivateKey in interface CryptoProviderUtil

Parameters:

keyBytes - Bytes to be converted to the EC private key.

Returns:

An instance of EC private key decoded from the input bytes.

Throws:

InvalidKeySpecException - The provided key bytes are not a valid EC private key.

CryptoProviderException - When crypto provider is incorrectly initialized.

convertSharedSecretKeyToBytes

public byte[] convertSharedSecretKeyToBytes(SecretKey sharedSecretKey)

Converts a shared secret key (usually used for AES based operations) to a byte array.

Specified by:

convertSharedSecretKeyToBytes in interface CryptoProviderUtil

Parameters:

sharedSecretKey - A shared key to be converted to bytes.

Returns:

A byte array representation of the shared secret key.

convertBytesToSharedSecretKey

public SecretKey convertBytesToSharedSecretKey(byte[] bytesSecretKey)

Converts a byte array to the secret shared key (usually used for AES based operations).

Specified by:

convertBytesToSharedSecretKey in interface CryptoProviderUtil

Parameters:

bytesSecretKey - Bytes representing the shared key.

Returns:

An instance of the secret key by decoding from provided bytes.