A new set of cryptographic algorithms is being proposed for inclusion in the "4G" mobile standard called LTE (Long Term Evolution), and the algorithms are open for public evaluation. The new set of confidentiality and integrity algorithms EEA3/EIA3 is based on the new stream cipher ZUC. In the present paper, we are interested in making the verification and the implementation as well as performing the analytical analysis of the two algorithms, as we have done, in previous works, with the first

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... o sets of the LTE cryptographic algorithms EEA1/EIA1 and EEA2/EIA2. The verification of the confidentiality algorithm results on a correction of the proposed 3GPP algorithm code to meet the specifications requirements.