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A time-based one-time password (TOTP) is a code that changes every few seconds based on the current time. It is used for two-factor authentication (2FA) and is part of the OATH standard.
Donald Trump's secret service code name is Mogul, according to a list of code names for U.S. presidents and their families. The code names are chosen from a list by the White House Communications Agency and change over time for security purposes.
The one-time pad is an encryption technique that uses a single-use pre-shared key that is larger than or equal to the message size. It is impossible to break if the key is random, secret, and used only once. Learn about its history, applications, and quantum version.
Learn about the history, variations and insecurity of the pigpen cipher, a geometric simple substitution cipher that uses symbols in a grid. The cipher is also known as the masonic cipher, Rosicrucian cipher, Napoleon cipher and tic-tac-toe cipher.
Learn what a message authentication code (MAC) is, how it works, and why it is used for authenticating and integrity-checking messages. Compare MAC with cryptographic hash functions, digital signatures, and other cryptographic primitives.
With Diffie–Hellman key exchange, two parties arrive at a common secret key, without passing the common secret key across the public channel. Diffie–Hellman ( DH ) key exchange [ nb 1 ] is a mathematical method of securely generating a symmetric cryptographic key over a public channel and was one of the first public-key protocols as ...
Cryptography is the practice and study of techniques for secure communication in the presence of adversarial behavior. Learn about the core concepts, terminology, and history of cryptography, as well as its modern applications in computer science, information security, and digital media.
To access your AOL Mail account on these apps, you'll need to generate and use an app password. An app password is a randomly generated code that gives a non-AOL app permission to access your AOL account. You'll only need to provide this code once to sign in to your 3rd party email app.