Contents
For what purpose OTP is used?
One-time password (OTP) systems provide a mechanism for logging on to a network or service using a unique password that can only be used once, as the name suggests. The static password is the most common authentication method and the least secure.
When was OTP first used?
The idea of an OTP was first suggested by Leslie Lamport [1] in the early 1980s. In Lamport’s scheme, the user begins with a secret w and a constant t, defining the number of identifications to be allowed. A one-way function (OWF) H is used to define the password sequence: w0= Ht(w), Ht-1(w), Ht-2(w), …, Ht-i(w).
What is Lamport one time password?
In 1981, Lamport proposed a One Time Password (OTP) authentication scheme using cryptographic hash functions. The purpose of an OTP is to make it more difficult to gain unauthorized access to restricted resources ( Niharika and Rama, 2015 ).
How do you use OTP authentication?
The setup process entails the server generating a secret key. The user enters the secret key into the authenticator application. The user can then generate an OTP to verify the setup process worked with the server. Each time the authenticator app is opened, a random number is generated for use at a fixed interval.
What is the word OTP?
One-time password
One-time password/Full name
What does OTP mean when texting?
one true pair/pairing
What does OTP mean? OTP is an abbreviation meaning “one true pair/pairing.”
How does Lamport’s one time password ( OTP ) work?
Lamport’s one-time password (OTP) was originally proposed to address the weaknesses of a simple password system. However, it has been widely used to design key management and authentication mechanisms. OTP is based on a hash chain constructed using only the cryptographic hash function, in which the hash chain is a main engine for OTP generation.
What are the characteristics of Lamport’s OTP method?
Section 5 provides a comparative analysis of our proposed method and Lamport ‘s OTP. 2. OTP based on hash chain and related work 2.1. Characteristics of Lamport ‘s OTP and security requirements
What’s the difference between Lamport’s OTP and new hash chain?
Unlike the single “long” backward hash chain of Lamport ‘s OTP, this new hash chain consists of multiple “short” backward hash chains, each of which is sequentially interconnected. While preserving the advantages of Lamport ‘s OTP, it addresses two of its weaknesses.
What do you need to know about Lamport signatures?
In cryptography, a Lamport signature or Lamport one-time signature scheme is a method for constructing a digital signature. Lamport signatures can be built from any cryptographically secure one-way function; usually a cryptographic hash function is used.