To do this some sort of synchronization must exist between the client's token and the authentication server. Time-synchronized one-time passwords change constantly at a set time interval e.g., once per minute. The authentication server encrypts a challenge (typically a random number, or at least data with some random parts) with a public key the device proves it possesses a copy of the matching private key by providing the decrypted challenge. Challenge–response token Using public key cryptography, it is possible to prove possession of a private key without revealing that key.
#Usb dongle id generator key password
Asynchronous password token A one-time password is generated without the use of a clock, either from a one-time pad or cryptographic algorithm. The token and the authentication server must have synchronized clocks. Synchronous dynamic password token A timer is used to rotate through various combinations produced by a cryptographic algorithm. This type is vulnerable to replay attacks. Static password token The device contains a password which is physically hidden (not visible to the possessor), but which is transmitted for each authentication. Some tokens have an audio capability designed for vision-impaired people.Īsynchronous password token for HSBC online banking. Connected tokens utilize a variety of interfaces including USB, near-field communication (NFC), radio-frequency identification (RFID), or Bluetooth. Some designs incorporate tamper resistant packaging, while others may include small keypads to allow entry of a PIN or a simple button to start a generating routine with some display capability to show a generated key number. Some tokens may store cryptographic keys that may be used to generate a digital signature, or biometric data, such as fingerprint details. Examples include a wireless keycard opening a locked door, or in the case of a customer trying to access their bank account online, the use of a bank-provided token can prove that the customer is who they claim to be. It acts like an electronic key to access something. The token is used in addition to or in place of a password.
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A GoldKey security token connected to a laptopĪ security token is a peripheral device used to gain access to an electronically restricted resource.