The PRNGEncryptor is used in conjunction with a PseudoRandomSource
to encrypt data provided to this class in a stream interface to the
calling class.
A PRNG represents a Pseudo Random Number Generator.
It provides a similar relationship or functionality
that the BlockEncryptor uses for BlockEncryptorEngines. That is, it
allows you to use a PseudoRandomSource as an output stream instead
of relying on the encryption mechanisms exposed in the PseudoRandomSource
class.
Category:
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
PRNGEncryptor(PseudoRandomSource keystream,
OutputStream output)
Creates a PRNGEncryptor object given a specified output
stream and a keystream will generate numbers to encrypt with.
Method Summary
protected void
encrypt(byte[] plaintext,
int plaintextOffset,
int plaintextLength,
byte[] ciphertext)
Encrypts data using the specific implementation of the chosen stream encryptor.
Creates a PRNGEncryptor object given a specified output
stream and a keystream will generate numbers to encrypt with.
Parameters:
output - An OutputStream object that will contain the ciphertext after the class
has completed its task.
keystream - A PseudoRandomSource object to create random numbers that
provide a secure method for encrypting the stream.
Since:
JDE 3.6.0
Category:
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
Method Detail
encrypt
protected void encrypt(byte[] plaintext,
int plaintextOffset,
int plaintextLength,
byte[] ciphertext)
throws CryptoTokenException
plaintext - A byte array containing the input to the stream cipher.
plaintextOffset - The offset, or initial position within the array, of the information to encrypt.
length - The length of the information to encrypt.
ciphertext - A byte array to hold the output of the stream cipher.
Throws:
CryptoTokenException - Thrown when a problem occurs with the crypto token
or the crypto token is invalid.
Category:
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
A String that represents the name of the algorithm.
Since:
JDE 3.6.0
Category:
Signed: This element is only accessible by signed clients. If you intend to use this element, please contact RIM to establish the necessary agreements that will allow you to have your COD files signed. Signing is only required for use on the device, development under the JDE can occur without signing the CODs.
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