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2. One-time pad - Wikipedia

   en.wikipedia.org/wiki/One-time_pad

   In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single-use pre-shared key that is larger than or equal to the size of the message being sent. In this technique, a plaintext is paired with a random secret key (also referred to as a one-time pad ).

3. Time-based one-time password - Wikipedia

   en.wikipedia.org/wiki/Time-based_One-Time_Password

   Time-based one-time password. Time-based one-time password ( TOTP) is a computer algorithm that generates a one-time password (OTP) using the current time as a source of uniqueness. As an extension of the HMAC-based one-time password algorithm (HOTP), it has been adopted as Internet Engineering Task Force (IETF) standard RFC 6238. [1] TOTP is ...

4. One-time password - Wikipedia

   en.wikipedia.org/wiki/One-time_password

   A one-time password ( OTP ), also known as a one-time PIN, one-time authorization code ( OTAC) or dynamic password, is a password that is valid for only one login session or transaction, on a computer system or other digital device. OTPs avoid several shortcomings that are associated with traditional (static) password-based authentication; a ...

5. HMAC-based one-time password - Wikipedia

   en.wikipedia.org/wiki/HMAC-based_one-time_password

   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 ...

6. Hash-based cryptography - Wikipedia

   en.wikipedia.org/wiki/Hash-based_cryptography

   Hash-based cryptography is the generic term for constructions of cryptographic primitives based on the security of hash functions. It is of interest as a type of post-quantum cryptography . So far, hash-based cryptography is used to construct digital signatures schemes such as the Merkle signature scheme, zero knowledge and computationally ...

7. Classified information in the United States - Wikipedia

   en.wikipedia.org/wiki/Classified_information_in...

   The United States has three levels of classification: Confidential, Secret, and Top Secret. Each level of classification indicates an increasing degree of sensitivity. Thus, if one holds a Top Secret security clearance, one is allowed to handle information up to the level of Top Secret, including Secret and Confidential information. If one ...

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

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

   Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. If you use a 3rd-party email app to access your AOL Mail account, you may need a special code to give that app permission to access your AOL account. Learn how to create and delete app passwords.

9. Three Secrets of Fátima - Wikipedia

   en.wikipedia.org/wiki/Three_Secrets_of_Fátima

   The Three Secrets of Fátima ( Portuguese: Os Três Segredos de Fátima) are a series of apocalyptic visions and prophecies reportedly given to three young Portuguese shepherds, Lúcia Santos and her cousins Jacinta and Francisco Marto, by a Marian apparition, starting on 13 May 1917. The three children claimed to have been visited by the ...