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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. 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 ...

4. Hidden message - Wikipedia

   en.wikipedia.org/wiki/Hidden_message

   A hidden message is information that is not immediately noticeable, and that must be discovered or uncovered and interpreted before it can be known. Hidden messages include backwards audio messages, hidden visual messages and symbolic or cryptic codes such as a crossword or cipher. Although there are many legitimate examples of hidden messages ...

5. 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 ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Code (cryptography) - Wikipedia

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

   One-time code. A one-time code is a prearranged word, phrase or symbol that is intended to be used only once to convey a simple message, often the signal to execute or abort some plan or confirm that it has succeeded or failed. One-time codes are often designed to be included in what would appear to be an innocent conversation.

8. Diffie–Hellman key exchange - Wikipedia

   en.wikipedia.org/wiki/Diffie–Hellman_key_exchange

   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 is a mathematical method of securely exchanging cryptographic keys over a public channel and was one of the first public-key protocols as conceived by Ralph Merkle and named after Whitfield Diffie and Martin Hellman.

9. Key exchange - Wikipedia

   en.wikipedia.org/wiki/Key_exchange

   Key exchange. Key exchange (also key establishment) is a method in cryptography by which cryptographic keys are exchanged between two parties, allowing use of a cryptographic algorithm . In the Diffie–Hellman key exchange scheme, each party generates a public/private key pair and distributes the public key. After obtaining an authentic copy ...