One-time password authentication method
A password authentication and one-time technology, which is applied in the direction of user identity/authority verification, etc., can solve the problems of difficult one-time encryption, troublesome keys, and inability to obtain ciphertext, etc., to achieve the reduction of computational complexity and the improvement of security performance Effect
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[0019] The symbols used in the embodiment are shown in the table:
[0020]
[0021] The main steps of the authentication method are as follows:
[0022] A, registration phase (Registration)
[0023] (1) Generate key pair e, d based on RSA algorithm;
[0024] a) The user terminal randomly selects two large prime numbers p and q, calculates n=pq, ¢(n)=(p-1)(q-1), and p, q, ¢(n) are kept secret by the users;
[0025] b) Choose public key e: 1
[0026] c) Seek private key d: make de=1mod ¢(n), d users keep secret;
[0027] Then: any g∈Z n , G is Z n A primitive element of with g ed =g modn is established.
[0028] (2) Generate authentication basis t based on the discrete logarithm problem on the finite field;
[0029] a) The user terminal generates a large prime number u, t ∈ Z u Is a primitive element;
[0030] b) Randomly select one's own secret seed s (1≤s≤u-1), s users keep secret;
[0031] c) Calculate t s mod u, and then send a registration reque...
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