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Color Images Encryption using Cipher System with Different Types of Random Number Generator

Najwan AH

Image encryption is a wide science in a nowadays and is used in research of information security, and a lot of image encryption algorithms have been introduced to protect the personal images from unauthorized access. The proposal algorithm generated random password seed which is used as a key to three types of Pseudo Random Number Generator; Linear Feed Back Shift Register, Non-Linear Feed Back Shift Register and BLUM BLUM SHUB. The algorithms are applied to the colour images with large random keys. The experimental results of comparisons between these algorithms, shows that BBS have better performance than LFBSR and NLFBSR.