US Patent 7957536 Method for key administration for cryptography modules

The invention relates to a method for a central key station (SS), for setting a new key (nK) in a cryptography module (KM) without a public key being stored in the cryptography module (KM), the authenticity of the new key (nK) being secured by a protocol. According to said method, the public key (KMpub) of the cryptography module is only transported in an encoded manner and only transmitted to key points (SS) that have access to the cryptography module (KM).