Message security

Details Message security Message security

2004-09-13

2009-10-06

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C709S248000, C713S400000, C380S046000, C380S047000, C380S260000, C380S262000

Reexamination Certificate

active

07600121

ABSTRACT:
To provide a secure, effective but simple message handling, a method is provided for transmitting an electrical message, from a first user having a first terminal to a second user having a second terminal. The method comprises the steps of: transmitting said email in an encrypted form by said first terminal, said encrypted e-mail being encrypted by means of a key generated by a first key generator using a seed, providing once said second user with said seed for generating a key with a second key generator provided in said second terminal, providing to and storing said seed in said second terminal, using said seed by said second terminal for generating a key each time an encrypted email from said first user to said second user is received, synchronizing a counting value in each terminal; and generating said key on the basis of said seed and a counting value in each terminal, independently of other terminal.

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