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, generateNewKeycreateParameterSpec, decrypt, 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.Copyright © 2004–2020 The Apache Software Foundation. All rights reserved.