Method and apparatus for use in public-key data encryption syste

Details Method and apparatus for use in public-key data encryption syste Method and apparatus for use in public-key data encryption syste

1984-05-31

1986-12-30

Cangialosi, Salvatore

Telegraphy

Systems

Printing

178 2209, H04L 900

Patent

active

046330364

ABSTRACT:
In an encryption scheme based on the use of a public key having secret factors p and q, additional requirements on p and q are invoked in order to ensure a high level of security. In particular, it is additionally required that a value p+1 have a large prime factor r and that the value r-1 also have a large prime factor r'.

REFERENCES:
patent: 4200770 (1980-04-01), Hellman et al.
patent: 4218582 (1980-08-01), Hellman
Michael Rabin, "Digitalized Signatures and Public-Key Functions as Intractable as Factorization," MIT Laboratory for Computer Science Technical Report 212, Jan., 1979, pp. 1-16.

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