Module seppiko.commons.utils

Package org.seppiko.commons.utils.crypto

Interface Cryptography

All Known Implementing Classes:

AsymmetricUtil, SymmetricUtil

public interface Cryptography

Cryptography interface.

Author:

Leonard Woo

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] data)	Decrypt data.
byte[]	encrypt(byte[] data)	Encrypt data.
void	setParameterSpec(AlgorithmParameterSpec params)	Set AlgorithmParameterSpec.
default void	setProvider(String providerName)	Set provider.
void	setProvider(Provider provider)	Set provider.

Method Details

setProvider

default void setProvider(String providerName)

Set provider.

Parameters:

providerName - the provider name.

setProvider

void setProvider(Provider provider)

Set provider.

Parameters:

provider - the provider.

setParameterSpec

void setParameterSpec(AlgorithmParameterSpec params)

Set AlgorithmParameterSpec.

Parameters:

params - AlgorithmParameterSpec subclass.

encrypt

byte[] encrypt(byte[] data)
        throws InvalidAlgorithmParameterException,
NoSuchPaddingException,
IllegalBlockSizeException,
NoSuchAlgorithmException,
BadPaddingException,
InvalidKeyException,
NullPointerException

Encrypt data.

Parameters:

data - plaintext data buffer.

Returns:

ciphertext data buffer.

Throws:

InvalidAlgorithmParameterException - if the given algorithm parameters are inappropriate for this cipher, or this cipher requires algorithm parameters and params is null, or the given algorithm parameters imply a cryptographic strength that would exceed the legal limits (as determined from the configured jurisdiction policy files).

NoSuchPaddingException - if transformation contains a padding scheme that is not available.

IllegalBlockSizeException - if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided.

NoSuchAlgorithmException - if transformation is null, empty, in an invalid format, or if no Provider supports a CipherSpi implementation for the specified algorithm.

BadPaddingException - if this cipher is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes.

InvalidKeyException - if the given key is inappropriate for initializing this cipher, or its key-size exceeds the maximum allowable key-size (as determined from the configured jurisdiction policy files).

NullPointerException - key is null.

decrypt

byte[] decrypt(byte[] data)
        throws InvalidAlgorithmParameterException,
NoSuchPaddingException,
IllegalBlockSizeException,
NoSuchAlgorithmException,
BadPaddingException,
InvalidKeyException,
NullPointerException

Decrypt data.

Parameters:

data - ciphertext data buffer.

Returns:

plaintext data buffer.

Throws:

InvalidAlgorithmParameterException - if the given algorithm parameters are inappropriate for this cipher, or this cipher requires algorithm parameters and params is null, or the given algorithm parameters imply a cryptographic strength that would exceed the legal limits (as determined from the configured jurisdiction policy files).

NoSuchPaddingException - if transformation contains a padding scheme that is not available.

IllegalBlockSizeException - if this cipher is a block cipher, no padding has been requested (only in encryption mode), and the total input length of the data processed by this cipher is not a multiple of block size; or if this encryption algorithm is unable to process the input data provided.

NoSuchAlgorithmException - if transformation is null, empty, in an invalid format, or if no Provider supports a CipherSpi implementation for the specified algorithm.

BadPaddingException - if this cipher is in decryption mode, and (un)padding has been requested, but the decrypted data is not bounded by the appropriate padding bytes.

InvalidKeyException - if the given key is inappropriate for initializing this cipher, or its key-size exceeds the maximum allowable key-size (as determined from the configured jurisdiction policy files).

NullPointerException - key is null.