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java.lang.Objectnet.rim.device.api.crypto.RSAEncryptorEngine
public final class RSAEncryptorEngine
Provides the RSA encryption functionality on a block by block basis. The block length is the size of the modulus, which must be a multiple of 8 bits.
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 encryptor engine, click here.
For information on cryptographic algorithms, see Crypto Algorithms.
RSADecryptorEngine
Constructor Summary | ||
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RSAEncryptorEngine(RSAPublicKey key)
Creates an RSAEncryptorEngine object given a public key that will be
used for encrypting the plaintext. |
Method Summary | ||
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void |
encrypt(byte[] plaintext,
int plaintextOffset,
byte[] ciphertext,
int ciphertextOffset)
Encrypts a block of the given plaintext into a block of ciphertext. |
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String |
getAlgorithm()
Returns the name of the algorithm used, ie "RSA". |
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int |
getBlockLength()
Returns the block length of the engine in bytes. |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public RSAEncryptorEngine(RSAPublicKey key) throws CryptoTokenException, CryptoUnsupportedOperationException
RSAEncryptorEngine
object given a public key that will be
used for encrypting the plaintext. The modulus must be a multiple of 8.
key
- The public key associated with the private key that will
be used to decrypt 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 |
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public String getAlgorithm()
This method will always return the String "RSA".
getAlgorithm
in interface BlockEncryptorEngine
public int getBlockLength()
BlockEncryptorEngine
getBlockLength
in interface BlockEncryptorEngine
public void encrypt(byte[] plaintext, int plaintextOffset, byte[] ciphertext, int ciphertextOffset) throws CryptoTokenException
BlockEncryptorEngine
encrypt
in interface BlockEncryptorEngine
plaintext
- 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.
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