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2. Comparison of OTP applications - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_OTP_applications

   An open-source PHP web based self-hosted OTP generator, designed for both mobile and desktop. Yes, web based No No Yes Yes Yes No Yes totp-cli [37] Popular, feature rich open-source two-factor authenticator. No account required. Manually No Yes Yes No No No No Un­known Un­known Un­known Un­known Un­known Open Authenticator [38]

3. One-time password - Wikipedia

   en.wikipedia.org/wiki/One-time_password

   MasterCard SecureCode uses OTAC to confirm a user's identity One time authorization code as used in Yammer's desktop client. A one-time password (OTP), also known as a one-time PIN, one-time passcode, 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.

4. Google Authenticator - Wikipedia

   en.wikipedia.org/wiki/Google_Authenticator

   Google Authenticator is a software-based authenticator by Google.It implements multi-factor authentication services using the time-based one-time password (TOTP; specified in RFC 6238) and HMAC-based one-time password (HOTP; specified in RFC 4226), for authenticating users of software applications.

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. YubiKey - Wikipedia

   en.wikipedia.org/wiki/YubiKey

   First YubiKey USB token of the FIDO standard in 2014. The YubiKey is a hardware authentication device manufactured by Yubico to protect access to computers, networks, and online services that supports one-time passwords (OTP), public-key cryptography, authentication, and the Universal 2nd Factor (U2F) and FIDO2 protocols [1] developed by the FIDO Alliance.

7. One-time pad - Wikipedia

   en.wikipedia.org/wiki/One-time_pad

   His result was published in the Bell System Technical Journal in 1949. [19] If properly used, one-time pads are secure in this sense even against adversaries with infinite computational power. Shannon proved, using information theoretic considerations, that the one-time pad has a property he termed perfect secrecy ; that is, the ciphertext C ...

8. multiOTP - Wikipedia

   en.wikipedia.org/wiki/MultiOTP

   multiOTP is an open source PHP class, a command line tool, and a web interface that can be used to provide an operating-system-independent, strong authentication system. multiOTP is OATH-certified since version 4.1.0 and is developed under the LGPL license.

9. Programmable ROM - Wikipedia

   en.wikipedia.org/wiki/Programmable_ROM

   OTP (one time programmable) memory is a special type of non-volatile memory (NVM) that permits data to be written to memory only once. Once the memory has been programmed, it retains its value upon loss of power (i.e., is non-volatile). OTP memory is used in applications where reliable and repeatable reading of data is required.