1. A decryption system for decrypting user information encrypted on a storage device associated with an identity document of a user, the system comprising: a server configured to collect user identity document data from the user and to construct a token comprising the user identity document data, wherein the server is further configured to send the token to a mobile device associated with the user for storing the token at the mobile device and wherein the mobile device is physically separate from said storage device; a key construction unit communicatively coupled to a machine reader configured to read the data from the token by radio frequency identification communication with the mobile device, wherein the token further comprises user identification information and in particular in which the reader is further configured to read the user identification information from the token and wherein the key construction unit uses the user identity document data read from the token, stored on the mobile device, to construct a key for decrypting the user information stored on said storage device; a comparator for comparing the user identification information read from the token stored on the mobile device and the user information decrypted from said storage device associated with the user identity document; and authentication means for authenticating the user depending upon the result of the comparison.
1. A decryption system for decrypting user information encrypted on a storage device associated with an identity document of a user, the system comprising: a server configured to collect user identity document data from the user and to construct a token comprising the user identity document data, wherein the server is further configured to send the token to a mobile device associated with the user for storing the token at the mobile device and wherein the mobile device is physically separate from said storage device; a key construction unit communicatively coupled to a machine reader configured to read the data from the token by radio frequency identification communication with the mobile device, wherein the token further comprises user identification information and in particular in which the reader is further configured to read the user identification information from the token and wherein the key construction unit uses the user identity document data read from the token, stored on the mobile device, to construct a key for decrypting the user information stored on said storage device; a comparator for comparing the user identification information read from the token stored on the mobile device and the user information decrypted from said storage device associated with the user identity document; and authentication means for authenticating the user depending upon the result of the comparison. 3. A decryption system according to claim 1 wherein the user manually enters the user identity document data prior to the reader reading the data encoded on the token.