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λ(n)

Abbreviation(s) and Synonym(s):

None

Definition(s):

  Lambda function of the RSA modulus n, i.e., the least positive integer i such that 1= ai mod n for all a relatively prime to n. When n=pq, λ(n) = LCM(p-1, q-1).
Source(s):
NIST SP 800-56B Rev. 1