Patent ID: 8266435

Claim:
A method for login name-based generation of an asymmetric cryptographic key pair, the method comprising: reception of a unique user ID and an arbitrarily selectable login name assigned to said user ID; calculation of a function value g(login name) through application of a function g to said login name; generation of a random value; calculation of a first data object key through application of a function ƒ to said random value and said function value g(login name); whereby the method further comprises: performance of an admissibility test of said first data object key according to test conditions, whereby said test conditions comprise the applicability of said first data object key for generation of a second data object key from said first data object key by means of an asymmetric cryptographic key generation method; if said test conditions are fulfilled, calculation of said second data object key from said first data object key, whereby said first and second data object keys form an asymmetric key pair; if one or more of said test conditions are not fulfilled, calculation of a new first data object key with a new random value, and renewed execution of said admissibility test.