Abstract: There is proposed a method of generating secret and public keys vDGHV with enhanced security, implemented in a device including at least one microprocessor and a memory. The method includes generating a secret key SK corresponding the generation of a prime random number p or product of prime numbers.

Abstract: A method is provided for simplifying the input, by a user, of a very long numerical sequence, via an input module of a communications terminal. The method includes: inputting, via the input module, at least one word forming alphanumerical sequences, the word or words being previously associated with the numerical sequence; transferring the word or words to a conversion module; and receiving, by the input module, the numerical sequence, provided by the conversion module, after the words have been processed. The words are determined and provided to the user by the conversion module, in a prior initialization phase, by a conversion algorithm that associates the word or words in a unique way with a very long numerical sequence. The word or words are chosen from a pre-selected dictionary consisting of words that are of significance to the user.