Patent · US Active

Automatic message assembly during a cryptographic operation

US11626995B2 · kind B2 · utility

0Cited by

0References

21Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Manuela Meier · Munich, DE
Andreas Graefe · Bückeburg, DE

Key dates

Filing date	Sep 29, 2020
Grant date	Apr 11, 2023
Priority date	—
Expiry date	Dec 15, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04L2209/12
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A cryptographic accelerator may include an input buffer to store an additional authenticated data (AAD) portion of a message and a plain text portion of the message. The cryptographic accelerator may include a cryptographic engine to generate cipher text using the plain text portion of the message, generate a message authentication code (MAC) using the AAD portion and either the plain text portion or the cipher text, determine a configuration for creating an assembled message in an output buffer of the cryptographic accelerator, and provide at least the cipher text to the output buffer to create the assembled message in the output buffer according to the configuration. The cryptographic accelerator may include the output buffer to provide the assembled message.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.