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In this paper a new algorithm is suggested to encrypt data, as it was to benefit from human iris as one of Biometric properties in human body which distinguish the individual from the other to produce the encryption through extracting important features using Wavelet Transformation and then passing through a series of  operations moderation as the first phase, at the second phase a chaotic function properties is used by leading it in encryption operation as a basic factor. Through the overlap between the results of above  phases a new encryption  algorithm is produced which show  strength, and could not discover the encryption key until  getting  the biometric property and  finding complete information about the chaotic used function  in addition to the working algorithm .