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Interface java.security.FeedbackCipher

public interface FeedbackCipher

This is NOT the implementation from Sun. This class has been developed by IAIK according to the documentation publically available. Only the documentation from Sun has been inserted into the source files.

An interface implemented by algorithms that use feedback. Examples include block ciphers in CBC, CFB, or OFB mode.

This interface is used to set or get the initialization vector, which is the data first used as feedback.

Note that initialization vectors are not secret, and should not be used for data (such as cipher keys) where secrecy is required.

decrypt(byte[], int, int, byte[], int)

encrypt(byte[], int, int, byte[], int)

getInitializationVector()

Gets the initialization vector for this object.

getInitializationVectorLength()

Returns the size of the initialization vector expected by setInitializationVector.

getName()

setInitializationVector(byte[])

Sets the initialization vector for this object.

 public abstract void setInitializationVector(byte iv[])

Sets the initialization vector for this object. Note that FeedbackCiphers will usually default to a randomly generated vector if none is provided.

This method may only be called on an uninitialized cipher (one in the UNINITIALIZED state) that implements FeedbackCipher.

Parameters:

iv - - the initialization vector.

Throws: InvalidParameterException

if the initialization vector is of the wrong length or otherwise invalid.

 public abstract byte[] getInitializationVector()

Gets the initialization vector for this object. This may be called on a cipher implementing FeedbackCipher. It will return null if the initialization vector has not been set.

Returns:

the initialization vector for this cipher object.

 public abstract int getInitializationVectorLength()

Returns the size of the initialization vector expected by setInitializationVector.

Returns:

the required size of the argument to setInitializationVector.

 public abstract void encrypt(byte in[],
                              int inOff,
                              int inLen,
                              byte out[],
                              int outOff)

 public abstract void decrypt(byte in[],
                              int inOff,
                              int inLen,
                              byte out[],
                              int outOff)

 public abstract String getName()

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