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In military terminology, a countersign is a sign, word, or any other signal previously agreed upon and required to be exchanged between a picket or guard and anybody approaching his or her post.
Password-authenticated key exchange (PAKE) is a method in which two or more parties, based only on their knowledge of a shared password, [1] establish a cryptographic key using an exchange of messages, such that an unauthorized party (one who controls the communication channel but does not possess the password) cannot participate in the method ...
HMAC-based one-time password (HOTP) is a one-time password (OTP) algorithm based on HMAC. It is a cornerstone of the Initiative for Open Authentication (OATH). HOTP was published as an informational IETF RFC 4226 in December 2005, documenting the algorithm along with a Java implementation. Since then, the algorithm has been adopted by many ...
For the sixth year, NordPass, an online password manager, has released a list of the 200 most common passwords − ones that should be avoided due to how easy they are to "crack," or hack.
Poor client-side password storage (e.g., written down, stored in phone contacts). Password reuse across multiple websites, as WebAuthn credentials are specific to individual websites by design. Inadequate server-mandated password requirements (e.g., overly lax or restrictive criteria, arbitrary maximum length limits, limited charsets).
These permissions can usually be adjusted only after authenticating with the password. This can be a useful form of delegation of authorization, for example, when creating programs that will access the remote system. The PAT will typically be stored in a location accessible to the program, and therefore not typically as secure as a password.
The simplest example of a challenge-response protocol is password authentication, where the challenge is asking for the password and the valid response is the correct password. An adversary who can eavesdrop on a password authentication can authenticate themselves by reusing the intercepted password. One solution is to issue multiple passwords ...
A strong password is your first line of defense against intruders and imposters. Here are some helpful tips on creating a secure password so you can make sure your information remains safe. Create a strong password • Use unique words - Don't use obvious words like "password". • Have 12 or more characters - Longer passwords are more secure.