Abstract: Method and system wherein that once the input data sequence (X) and the control block (K) have been supplied, the method and system generates always a sequence of randomized-encrypted data (A) which is an encrypted sequence of random numbers. The method and system randomize-encrypt the data sequence (X) in a corrective way generating the proposed randomized-encrypted text sequence (AP). The randomness verifier (603) validates the randomization of the proposed randomized-encrypted text sequence (AP). If the proposed randomized-encrypted text sequence (AP) is random, it is supplied as randomized-encrypted text sequence (A); if it is not random, the method and system randomize-encrypt the data sequence (X) in a different corrective way again. The iteration is repeated until it is encrypted and at random the proposed randomized-encrypted text sequence (AP).

Abstract: Data sequence randomization encryption system such that having supplied data sequence (X) and randomization-encryption key (Kp) generates random data sequence (Yp), so that laypersons in encryption are able to measure objectively the diffusion and confusion of the generated sequence (Yp) with the particular randomization-encryption key (Kp) which has been used. Data sequence (X) is divided into blocks (XI), each block (XI) gets into group with transformer block (WTI), generated by transformer block generator (1002) by making use of control initial block (R) and previous output block (YI), resulting in grouped block (VI), result of the group, which is encrypted by means of the device in U.S. Pat. No. 5,214,703 (204), generating output block (YI) which is supplied to transformer block generator (1002), the succession of output blocks (YI) results in output randomized-encrypted sequence (Yp).