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2. Key (cryptography) - Wikipedia

   en.wikipedia.org/wiki/Key_(cryptography)

   A password is a memorized series of characters including letters, digits, and other special symbols that are used to verify identity. It is often produced by a human user or a password management software to protect personal and sensitive information or generate cryptographic keys.

3. XOR cipher - Wikipedia

   en.wikipedia.org/wiki/XOR_cipher

   If the key is random and is at least as long as the message, the XOR cipher is much more secure than when there is key repetition within a message. [4] When the keystream is generated by a pseudo-random number generator, the result is a stream cipher. With a key that is truly random, the result is a one-time pad, which is unbreakable in theory.

4. CAPTCHA - Wikipedia

   en.wikipedia.org/wiki/Captcha

   According to an article by Ahn, Blum and Langford, [28] "any program that passes the tests generated by a CAPTCHA can be used to solve a hard unsolved AI problem." [ 29 ] They argue that the advantages of using hard AI problems as a means for security are twofold.

5. Randomness - Wikipedia

   en.wikipedia.org/wiki/Randomness

   A pseudorandomly generated bitmap. In common usage, randomness is the apparent or actual lack of definite pattern or predictability in information. [1] [2] A random sequence of events, symbols or steps often has no order and does not follow an intelligible pattern or combination.

6. Password cracking - Wikipedia

   en.wikipedia.org/wiki/Password_cracking

   In cryptanalysis and computer security, password cracking is the process of guessing passwords [1] protecting a computer system.A common approach (brute-force attack) is to repeatedly try guesses for the password and to check them against an available cryptographic hash of the password. [2]

7. Shadows of Doubt - Wikipedia

   en.wikipedia.org/wiki/Shadows_of_Doubt

   The city's layout, its citizens and their routines, and all murder cases are procedurally-generated per save file, and the player can choose the city's name, size, and seed. [9] The player has access to police transmissions and is alerted whenever a murder is reported, allowing them to open a case.

8. Create and manage 3rd-party app passwords - AOL Help

   help.aol.com/articles/Create-and-manage-app-password

   Customer care can’t override this process of determining App Password creation eligibility. Sign in to your AOL Account Security page. Click Generate app password or Generate and manage app passwords. Click Get Started. Enter your app's name in the text field. Click Generate password. Use the one-time password to log in to your 3rd party app .

9. Entropy (information theory) - Wikipedia

   en.wikipedia.org/wiki/Entropy_(information_theory)

   The first 128 symbols of the Fibonacci sequence has an entropy of approximately 7 bits/symbol, but the sequence can be expressed using a formula [F(n) = F(n−1) + F(n−2) for n = 3, 4, 5, ..., F(1) =1, F(2) = 1] and this formula has a much lower entropy and applies to any length of the Fibonacci sequence.