|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectnet.rim.device.api.crypto.RSADecryptorEngine
public final class RSADecryptorEngine
Provides the RSA decryption functionality on a block by block basis. The block length is the size of the modulus, which must be a multiple of 8.
A description of the RSA algorithm can be found in PKCS #1 version 2.1. We support this definition of RSA.
For a code sample using the RSA decryptor engine, click here.
RSAEncryptorEngine
,
RSAKeyPair
Constructor Summary | ||
---|---|---|
|
RSADecryptorEngine(RSAPrivateKey key)
Creates an RSADecryptorEngine object given a private key that will be
used for decrypting the ciphertext. |
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 the algorithm used, ie "RSA". |
|
int |
getBlockLength()
Returns the block length of the block cipher in bytes. |
Methods inherited from class java.lang.Object |
---|
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public RSADecryptorEngine(RSAPrivateKey key) throws CryptoTokenException, CryptoUnsupportedOperationException
RSADecryptorEngine
object given a private key that will be
used for decrypting the ciphertext. The modulus must be a multiple of 8.
key
- The private key that will be used to decrypt the data. The
private key is associated with the public key that was
used to encrypt the data.
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 String getAlgorithm()
This method will always return the String "RSA".
getAlgorithm
in interface BlockDecryptorEngine
public int getBlockLength()
BlockDecryptorEngine
getBlockLength
in interface BlockDecryptorEngine
public void decrypt(byte[] ciphertext, int ciphertextOffset, byte[] plaintext, int plaintextOffset) throws CryptoTokenException
BlockDecryptorEngine
decrypt
in interface BlockDecryptorEngine
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.
CryptoTokenException
- Thrown when an error occurs with the crypto
token or the crypto token is invalid.
|
|||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
Copyright 1999-2010 Research In Motion Limited. 295 Phillip Street, Waterloo, Ontario, Canada, N2L 3W8. All Rights Reserved.
Copyright 1993-2003 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A. All Rights Reserved.
Copyright 2002-2003 Nokia Corporation All Rights Reserved.
Java is a trademark of Sun Microsystems, Inc.