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2. One-time pad - Wikipedia

   en.wikipedia.org/wiki/One-time_pad

   One-time pad. A format of one-time pad used by the U.S. National Security Agency, code named DIANA. The table on the right is an aid for converting between plaintext and ciphertext using the characters at left as the key. In cryptography, the one-time pad ( OTP) is an encryption technique that cannot be cracked, but requires the use of a single ...

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. 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 ...

5. 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 ...

6. ElGamal encryption - Wikipedia

   en.wikipedia.org/wiki/ElGamal_encryption

   The algorithm can be described as first performing a Diffie–Hellman key exchange to establish a shared secret , then using this as a one-time pad for encrypting the message. ElGamal encryption is performed in three phases: the key generation, the encryption, and the decryption.

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8. 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 ...

9. 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.