Under OTP, I showed with example how to generate an hotp. By default the length of the hotp generated will be 6. We can change that to any number between 6 and 8. In this post under OTP, I will show with example how to change hotp length to 8. Below is the complete main…… Continue reading Changing the hotp length

In this post, I will show with example how to verify HOTP. In my previous posts, under OTP I showed with example how to generate HOTP. To verify an HOTP we can use non-static overloaded “verify” methods in “HOTP” class. Below is the complete code for your reference. Main Class 1 package defaultPackage;2 3 import…… Continue reading Verifying the HOTP

In previous post, I showed with example how to generate an HOTP. I also mentioned in my previous post, how the framework by default using SHA-1 algorithm to generate the otp. I this post under OTP, I will show with example how to change the default algorithm. Below is the code for your reference. Main…… Continue reading Changing the algorithm when generating hotp

In this post I will show with example how to generate HOTP. I will be using open source otp framework written by “BastiaanJansen” using Java programming language. Below is the link to the GitHub project https://github.com/BastiaanJansen/otp-java HOTP is generated using two input parameters1) a secret2) a counter Below is the main method that shows how…… Continue reading Generating HOTP example