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rcoh.me | ||
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zserge.com
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| | | | | Many of us use one-time passwords (OTP) regularly to log into different services. Most probably rely on Google Authenticator and similar tools. But what about building one by ourselves? | |
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prezu.ca
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| | | | | Authenticator apps like Google Authenticator use 2 authenticaion protocol centered around What you have paradigm. Those algorithms are: HOTP (HMAC-based One Time Password), and TOTP (Time-based One Time Password). They obviously are different, but both are centered around the same basic idea: using a rolling hash value, that is predictable only to the server and the authenticator app. Additionally, both are using HMAC-SHA-1 for generating those hash values. In my previous post I explained the gist of the approach used in both algorithms. Here we'll focus on the details of implementation of HMAC. We'll tackle TOTP in part 3. | |
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www.mjt.me.uk
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info.knowbe4.com
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| | | Find out if your endpoint protection actually blocks ransomware and cryptomining infections with KnowBe4's Ransomware Simulator Tool. | ||
