Abstract: A data certification system and method for signing electronic data with a digital signature in which a central server comprises a signature server and an authentication server. The signature server securely stores the private cryptographic keys of a number of users. The user contacts the central server using a workstation through the secure tunnel which is set up for the purpose. The user supplies a password or other token based on information previously supplied to the user by the authentication server through a separate authentication channel. The authentication server provides the signature server with a derived version of the same information through a permanent secure tunnel between the servers, which is compared with the one supplied by the user. If they match, data received from the user is signed with the user's private key.

Abstract: Apparatus for certifying electronic data supplied by a user receives data to be signed, supplied by the user from a source device, at a certifying apparatus including at least a signature server providing a signing function. An encrypted password is received at that server from the source device via a first communication path, the password being generated by an authentication system providing an authentication function separate from the signing function and the password being transmitted to the source device via a second communication path, the signature server and the authentication system have different communication paths with the source device. A version of the encrypted password is communicated between the signature server and the authentication system via a third communication path, different to the first and second paths, for authenticating the user.

Abstract: An apparatus for generating intermediate cryptogram data corresponding to a dynamic password for a first cryptographic scheme, the intermediate cryptogram data being suitable for display using a device designed for a second, different cryptographic scheme, the apparatus including: a communications interface for communicating with a said device; and a processor coupled to a memory, the memory storing processor control code to control the processor, when running, to: generate a dynamic password according to the first cryptographic scheme; and generate intermediate cryptogram data corresponding to said dynamic password, the intermediate cryptogram data being suitable for outputting to the said device so that, when the said device processes said intermediate cryptogram data according to the second cryptographic scheme, the said device generates data suitable for displaying said dynamic password.

Abstract: A method of issuing an electronic negotiable document (END) comprising: creating as data an END and storing this in a tamper-resistant document carrier, the document carrier containing a unique public-secret key pair for signing and verifying and a unique document carrier identifier; signing the unique document-carrier identifier, the END and an END identifier using the secret key of the public-secret key pair and storing the result in the document carrier.

Abstract: A method of distributing the public key of an asymmetric key pair with a private key and the public key from a mobile station to a key managing computer, the method include the steps of: communicating a password (OTP) from the key managing (203) computer to the mobile station (209) of a registered user (201) by a secure channel (202) to thereby provide a shared secret; at the mobile station and at the key managing computer, generating a first code (MAC1) and a second node (MACT1), respectively, based on the same predefined generation method, which codes (MAC1; MACT1) are generated from the password (OTP); by the mobile station (209), transmitting the public key and the first code (MAC1) to the key managing computer (203); at the key managing computer (203), receiving the public key and the first code (MAC1) from the mobile station (209); checking the authenticity of the registered user (201) based on comparing the first code (MAC1) and the second code (MACT1).

Abstract: An electronic voting system, including: a voting device to generate, in response to a voter selection for each of a plurality of voters an encrypted electronic ballot and a printed ballot, both having voter selection data indicating a said voter's choice, said electronic ballot including information to link it to said printed ballot and vice-versa; an electronic vote decryption system configured to decrypt said encrypted electronic ballots including said linking information; and a voting verification system to receive decrypted voter selection data and linking information from said vote decryption system, to receive voter selection data and linking information from said printed ballots and to compare voters' choices for a sample of said printed and electronic ballots linked by said linking information, to verify the voting.