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java.lang.Object | +--net.rim.device.api.crypto.RC2EncryptorEngine
The RC2EncryptorEngine implements the encryption functionality
of the RC2 block cipher.
We implemented RC2 as per RFC 2268.
RC2 operates on 64 bit blocks and supports key lengths between 1 and 1024 bits.
For information on cryptographic algorithms, see Crypto Algorithms.
| Field Summary | ||
|
static int |
BLOCK_LENGTH
Represents the block length of the cipher in bytes, namely 8 bytes. |
| Constructor Summary | ||
|
RC2EncryptorEngine(RC2Key key)
Creates a RC2EncryptorEngine class based upon a RC2Key that is initialized and
used for encryption of the plaintext for all subsequent calls to the class. |
|
| Method Summary | ||
|
void |
encrypt(byte[] plaintext,
int plaintextOffset,
byte[] ciphertext,
int ciphertextOffset)
Encrypts a block of the given plaintext into a block of ciphertext. |
|
String |
getAlgorithm()
Returns the name of the algorithm used, eg "RC2_64" ( "RC2_" + keyBitLength). |
|
int |
getBlockLength()
Returns the block length of the engine in bytes. |
|
int |
getKeyLength()
Returns the length of the engine's key in bytes. |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
public static final int BLOCK_LENGTH
| Constructor Detail |
public RC2EncryptorEngine(RC2Key key) throws CryptoTokenException, CryptoUnsupportedOperationException
RC2EncryptorEngine class based upon a RC2Key that is initialized and
used for encryption of the plaintext for all subsequent calls to the class.
key - Contains the key material that will be used for decryption.CryptoTokenException - Thrown when an error occurs with a crypto
token or the crypto token is invalid.CryptoUnsupportedOperationException - Thrown when a call is made to
an unsupported operation.| Method Detail |
public void encrypt(byte[] plaintext,
int plaintextOffset,
byte[] ciphertext,
int ciphertextOffset)
throws CryptoTokenException
BlockEncryptorEngine
BlockEncryptorEngineplaintext - A byte array containing the input that is to be encrypted.plaintextOffset - The starting offset, or initial byte position, of
the data within the input array.ciphertext - A byte array to hold the ciphertext output from the method.ciphertextOffset - The starting offset, or initial byte position, of
the data within the output array.CryptoTokenException - Thrown when an problem occurs with the
crypto token or the crypto token is invalid.public String getAlgorithm()
"RC2_" + keyBitLength).
public int getBlockLength()
BlockEncryptorEngine
BlockEncryptorEnginepublic int getKeyLength()
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