Michael Walter

Title: Michael Walter: Innovator in Encrypted Computation

Introduction

Michael Walter is an accomplished inventor based in Paris, France. He has made significant contributions to the field of cryptography, particularly in the area of encrypted computation. His innovative approach has led to the development of a unique patent that addresses complex computational challenges.

Latest Patents

Michael Walter holds a patent for "Encrypted computation comprising a blind rotation." This patent involves a cryptographic encrypted computation method that performs a blind rotation of a ciphertext according to a test polynomial. The method results in an encrypted polynomial product of the test polynomial and a bootstrapping monomial that represents the plaintext value as an exponent, modulo a modulus (q) and modulo a quotient polynomial (p(X)). The quotient polynomial p(X) divides a number-theoretic transform (NTT) polynomial X−1, allowing a number-theoretic transform modulo the modulus q. The blind rotation is executed using the NTT, while the test polynomial is defined to ensure that the polynomial product yields desired output values for respective plaintext values as a fixed coefficient.

Career Highlights

Michael is currently employed at Zama SAS, where he continues to push the boundaries of cryptographic technology. His work focuses on enhancing the security and efficiency of encrypted computations, making significant strides in the field.

Collaborations

Michael collaborates with Marc Joye, a fellow expert in cryptography. Their combined expertise fosters innovation and drives advancements in their projects.

Conclusion

Michael Walter is a notable inventor whose work in encrypted computation exemplifies the intersection of technology and security. His contributions are paving the way for future innovations in cryptography.