Inventor

MATYAS STEPHEN M

US44 patents

⚠️ This page may combine multiple inventors who share the name “MATYAS STEPHEN M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MATYAS STEPHEN M

IBM

Authentication for secure devices with limited cryptography

Secure cryptographic operations using control vectors generated inside a cryptographic facility

Network security system and method using a parallel finite state machine adaptive active monitor and responder

Cryptographic facility environment backup/restore and replication in a public key cryptosystem

Public key cryptosystem key management based on control vectors

Method for generating public and private key pairs without using a passphrase

Method to establish and enforce a network cryptographic security policy in a public key cryptosystem

Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors

Method for authenticating the identity of a user of an information system

Cryptographic method for updating financial records

Secure management of keys using control vectors

Data cryptography operations using control vectors

Code protection using cryptography

Cryptographic file security for single domain networks

Method and system for multimedia access control enablement

Transaction security system

Transaction security system using time variant parameter

Method and apparatus incorporating a one-way sequence for transaction and identity verification

Cryptographic communication security for single domain networks

Cryptographic file security for multiple domain networks

Cryptographic verification of operational keys used in communication networks

Authentication for secure devices with limited cryptography

Encryption of low data content ATM cells

User defined function facility

Secure key management using programable control vector checking

Personal identification number processing using control vectors

Initialization of cryptographic variables in an EFT/POS network with a large number of terminals

Offline PIN validation with DES

Method for establishing user authenication with composite session keys among cryptographically communicating nodes

Cryptographic communication security for multiple domain networks

Secure management of keys using control vectors with multi-path checking

Cryptographic application for interbank verification

Cryptographic communication and file security using terminals

Commercial data masking

Authentication for secure devices with limited cryptography

Method and apparatus for validating entry of cryptographic keys

Method and apparatus for controlling the use of a public key, based on the level of import integrity for the key

Secure key management using control vector translation

Digital signature system and apparatus

Secure translation of usage-control values for cryptographic keys

Method and apparatus for enciphering blocks which succeed short blocks in a key-controlled block-cipher cryptographic system

Method and system of marking a text document with a pattern of extra blanks for authentication

Authentication for secure devices with limited cryptography

INT BUSINESS MACHINES COPRPORA

Secure management of keys using extended control vectors