A public key cryptography using multinacci block matrices. (arXiv:2003.08634v2 [cs.CR] UPDATED)

In this paper, we have proposed a public key cryptography using recursive
block matrices involving generalized Fibonacci numbers over a finite field Fp.
For this, we define multinacci block matrices, a type of upper triangular
matrix involving multinacci matrices at diagonal places and obtained some of
its algebraic properties. Moreover, we have set up a method for key element
agreement at end users, which makes the cryptography more efficient. The
proposed cryptography comes with a large keyspace and its security …

block cryptography key public