|
Draw A Secret
Draw a Secret (DAS) is a graphical password input scheme developed by Ian Jermyn, Alain Mayer, Fabian Monrose, Michael K. Reiter and Aviel D. Rubin and presented in a paper at the 8th USENIX Security Symposium in Augusts 1999. The scheme replaces alphanumeric password strings with a picture drawn on a grid. Instead of entering an alphanumeric password, this authentication method allows users to use a set of gestures drawn on a grid to authenticate. The user's drawing is mapped to a grid on which the order of coordinate pairs used to draw the password are recorded in a sequence. New coordinates are inserted to the recorded "password" sequence when the user ends one stroke (the motion of pressing down on the screen or mouse to begin drawing followed by taking the stylus or mouse off to create a line or shape) and begins another on the grid. Overview In DAS, a password is a picture drawn free-form on a grid of size N x N. Each grid cell is denoted by two-dimensional discrete coor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Password
A password, sometimes called a passcode (for example in Apple devices), is secret data, typically a string of characters, usually used to confirm a user's identity. Traditionally, passwords were expected to be memorized, but the large number of password-protected services that a typical individual accesses can make memorization of unique passwords for each service impractical. Using the terminology of the NIST Digital Identity Guidelines, the secret is held by a party called the ''claimant'' while the party verifying the identity of the claimant is called the ''verifier''. When the claimant successfully demonstrates knowledge of the password to the verifier through an established authentication protocol, the verifier is able to infer the claimant's identity. In general, a password is an arbitrary string of characters including letters, digits, or other symbols. If the permissible characters are constrained to be numeric, the corresponding secret is sometimes called a personal i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
