OTP - ( Review ) 

• A process of authentic verification deals access to the existing user ID and password. This process is done on behalf verifying your identity in applications and portal of the websites.
• OTP stands for One Time Password is a part of two factor authentication process because it helps access the stolen password required an additional credentials to login.
• OTP acts as a proprietary token in which access will be granted through smartphone devices as well as also be applied in the field of web based approach.
• In order to provide batter user experience adoption is mostly utilized for open-source implementation.

OTP -  Mechanism of Working Analysis

• First and foremost the whole working process and accessibility is being done by calculations  -  Need to generate an unique fresh pascode which is the mandatory for verifier to access granted.
• The main objective is to provide a secret code that may be 6 digit or 4 digit present in the form of numbers with the help of this confirmation code user can easy enter the credentials to login in the server.
• Suppose a 4 digit passcode OTP has send to user's mobile number in terms of transfer some amount of money to his another bank account while an user can also has to enter OTP after registration to access the portal.
• A few seconds has been automatically started within the pass code is required.While a pass code will be generated instant if the user failed to enter the first attempt of the confirmation code.

• A pass code is generated after every 60 seconds or more which is minimum time limit of processing the codes is required by the server. There are normally two types of basic authentic process is required to optimized the process of OTP - OTP will be send via SMS and by receiving a call both of the process is being done by smartphones.
• Each OTP is being processed by 64-bits in length & sequence displayed as 8 decimal digits while on the other hand all process and accessibility will be done in Two-Factor Authentication prototype.
• OTP prototypes for mobile devices are vulnerable to such type of replay attacks - keyboard monitor attacks, memory scan attacks and other clone attacks while OTP keeps secure the system of the device from those attracts as well as there is no any allowance of third-party is accept to enter such an OTP passcode at all.

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