Patent ID: 7724905

Claim:
A method for cryptographically securing a communication between a first computerized communication partner and a second computerized communication partner, comprising the steps of: by a processing unit of said first communication partner, generating a first key parameter; receiving at least one second key parameter at said first communication partner generated by said second communication partner; by the processing unit of said first communication partner, generating a secret session key using said first key parameter and said second key parameter; by the processing unit of said first communication partner, generating and storing a random number, and communicating said random number from said first communication partner to said second communication partner; at said first communication partner, receiving a sent-back random number from said second communication partner; and by the processing unit of said first communication partner, comparing said sent-back random number with the stored random number and releasing said secret session key for use upon satisfaction of a predetermined correlation between the sent-back random number and the stored random number.