Awarded for completing The Number Theory Behind Cryptography, for Engineers and passing its exam, demonstrating the ability to work modular arithmetic, the greatest common divisor, primality, Euler's totient, group order and discrete logarithms by hand and explain why each underpins a cryptographic primitive.
Certificates are designed to be checked, not just displayed.
The credential is valid for 12 months from issue. Its public page states the expiry date, and renewing means passing the current exam again — so the credential always reflects the current material.
