net.rim.device.api.crypto
Interface BlockDecryptorEngine
- All Known Subinterfaces:
- BlockDecryptorEngineExt, PrivateKeyDecryptorEngine, SymmetricKeyDecryptorEngine
- All Known Implementing Classes:
- AESCBCDecryptorEngine, AESDecryptorEngine, CAST128DecryptorEngine, CBCDecryptorEngine, DESDecryptorEngine, ElGamalDecryptorEngine, RC2DecryptorEngine, RC5DecryptorEngine, RSADecryptorEngine, SkipjackDecryptorEngine, TripleDESCBCDecryptorEngine, TripleDESDecryptorEngine, XDecryptorEngine
public interface BlockDecryptorEngine
The BlockDecryptorEngine interface describes the functionality of using a block cipher
for decryption.
- Category:
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
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Method Summary |
|
void |
decrypt(byte[] ciphertext,
int ciphertextOffset,
byte[] plaintext,
int plaintextOffset)
Decodes a block of the given ciphertext into a block of plaintext. |
|
String |
getAlgorithm()
Returns the name of this algorithm, eg "DES". |
|
int |
getBlockLength()
Returns the block length of the block cipher in bytes. |
decrypt
void decrypt(byte[] ciphertext,
int ciphertextOffset,
byte[] plaintext,
int plaintextOffset)
throws CryptoTokenException
- Decodes a block of the given ciphertext into a block of plaintext.
- Parameters:
ciphertext - A byte array containing the input that is to be decrypted.ciphertextOffset - The starting offset, or initial byte position, of the data within the input array.plaintext - A byte array containing the output from the method.plaintextOffset - The starting offset, or initial byte position, of
the data within the output array.
- Throws:
CryptoTokenException - Thrown when an error occurs with the crypto
token or the crypto token is invalid.- Category:
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getBlockLength
int getBlockLength()
- Returns the block length of the block cipher in bytes.
- Returns:
- An integer that specifies the length of a block of data.
- Category:
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
getAlgorithm
String getAlgorithm()
- Returns the name of this algorithm, eg "DES".
The general form of the algorithm is:
"<cipher name>[_<keyBitLength>[_<blockBitLength>[_<numberOfRounds>]]][/<mode>[/<padding>]]"
- Returns:
- A String representing the name of the algorithm.
- Category:
- Signed: This element is only accessible by signed applications. If you intend to use this element, please visit http://www.blackberry.com/go/codesigning to obtain a set of code signing keys. Code signing is only required for applications running on BlackBerry smartphones; development on BlackBerry Smartphone Simulators can occur without code signing.
- Since:
- BlackBerry API 3.6.0
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