Sets the algorithm-specific initialization vector size in bits (not bytes!) to be used when generating
initialization vectors. The value must be a multiple of {@code 8} to ensure that the IV can be represented
as a byte array.
@param initializationVectorSize the size in bits (not bytes) of generated initialization vectors.
@throws IllegalArgumentException if the size is not a multiple of {@code 8}.
Sets the algorithm-specific initialization vector size in bits (not bytes!) to be used when generating initialization vectors. The value must be a multiple of {@code 8} to ensure that the IV can be represented as a byte array.
@param initializationVectorSize the size in bits (not bytes) of generated initialization vectors. @throws IllegalArgumentException if the size is not a multiple of {@code 8}.