public class BlowfishCipherService extends DefaultBlockCipherService
CipherService using the
Blowfish cipher algorithm for all encryption, decryption, and key operations.
The Blowfish algorithm can support key sizes between
32 and
448 bits
*, inclusive. However, modern cryptanalysis techniques render keys of 80 bits or less mostly worthless - use
128 or more whenever possible.
Note that this class retains the parent class's default
CBC mode of operation instead of the typical JDK default of
ECB.
ECB should not be used in security-sensitive environments because
ECB does not allow for initialization vectors, which are considered necessary for strong encryption. See the
parent class's JavaDoc and the
JcaCipherService JavaDoc for more on why the JDK default should not be used and is not used in this implementation.
* Generating and using Blowfish key sizes greater than 128 require installation of the
Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy files.
| Constructor and Description |
|---|
BlowfishCipherService()
Creates a new
CipherService instance using the
Blowfish cipher algorithm with the following important cipher default attributes: Attribute Value
keySize
128 bits
blockSize
64 bits (required for
Blowfish)
mode
CBC
*
paddingScheme
PKCS5
initializationVectorSize
64 bits
generateInitializationVectors
true
**
* The
CBC operation mode is used instead of the JDK default
ECB to ensure strong encryption.
|
generateInitializationVector, getBlockSize, getModeName, getPaddingSchemeName, getStreamingBlockSize, getStreamingModeName, getStreamingPaddingSchemeName, getTransformationString, isGenerateInitializationVectors, setBlockSize, setMode, setModeName, setPaddingScheme, setPaddingSchemeName, setStreamingBlockSize, setStreamingMode, setStreamingModeName, setStreamingPaddingScheme, setStreamingPaddingSchemeNamegenerateNewKey, generateNewKeydecrypt, decrypt, encrypt, encrypt, ensureSecureRandom, getAlgorithmName, getDefaultSecureRandom, getInitializationVectorSize, getKeySize, getSecureRandom, getStreamingBufferSize, isGenerateInitializationVectors, setGenerateInitializationVectors, setInitializationVectorSize, setKeySize, setSecureRandom, setStreamingBufferSizepublic BlowfishCipherService()
CipherService instance using the
Blowfish cipher algorithm with the following important cipher default attributes:
| Attribute | Value |
|---|---|
keySize |
128 bits |
blockSize |
64 bits (required for Blowfish) |
mode |
CBC* |
paddingScheme |
PKCS5 |
initializationVectorSize |
64 bits |
generateInitializationVectors |
true** |
CBC operation mode is used instead of the JDK default
ECB to ensure strong encryption.
ECB should not be used in security-sensitive environments - see the
DefaultBlockCipherService class JavaDoc's "Operation Mode" section for more.
**In conjunction with the default
CBC operation mode, initialization vectors are generated by default to ensure strong encryption. See the
JcaCipherService class JavaDoc for more.