Secure two-piece user authentication in a computer network

Details Secure two-piece user authentication in a computer network Secure two-piece user authentication in a computer network

1996-12-31

1999-09-14

Hayes, Gail O.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 25, 380 49, H04K 100, H04L 900

Patent

active

059534222

ABSTRACT:
A computer system incorporating a two-piece authentication procedure for securely providing user authentication over a network. In the disclosed embodiment of the invention, a user password is entered during a secure power-up procedure. The user password is encrypted by an external token or smart card that stores an encryption algorithm furnished with an encryption key that is unique or of limited production. A network password is thereby created. The network password is maintained in a secure memory space such as System Management Mode (SMM) memory. The network password is then encrypted and communicated over the network. The network password may be encrypted using the server's public key or another key that is known to the server. Optional node identification information is appended to the network password prior to communication over the network. Once received by the server, the encrypted network password is decrypted using the server's private key. A user verification process is then performed on the network password to determine which, if any, access privileges have been accorded the network user.

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