Oberthur Technologies

Oberthur Card Systems Sa

Erik Knudsen

A calculation unit in which the inverse of an integer modulo a large number is determined provides a series of binary numbers prime with the large number, divides those numbers into two groups at random, and effects the products of the numbers of each group.

Calculation unit for executing a cryptographic protocol

A fast cryptographic method between two entities exchanging data via a non-secure communication channel. The method, for example, forms a common key between two entities (A,B), each having a secret key (a,b) and using a public key (P) formed by a point of an elliptic curve (E), and includes at least multiplying the odd order point (P) by an integer by additions and halving operations.

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Paris, France

Erik Knudsen