Skip to main content

On-the-fly Key Regeneration


I referred to ‘on-the-fly’ key regeneration in my earlier post “Cryptography and Expanded Password System” - https://www.linkedin.com/posts/hitoshikokumai_identity-authentication-password-activity-6678120452411531264-tfCF

The core logic is so simple and plain that this non-technology man was able to come up with overnight. I do not think it needs to be kept confidential.

Each image is represented by a very long identifier data.  The entropy of the identifier data summed up out of the several images the use picks up is very high to the extent that it works as the seed for generating unique encryption key.

Once the key gets generated and used for encryption, the seed and key will be eliminated while the software program remembers the formula for calculation. 

For decryption, the user picks up the correct images, the identifier data getting summed up to generate the seed, which will be put into the formula to calculate the key.  The seed and key will be eliminated once the decryption is over.

For actual implementation, some mathematical tweaks are added for obfuscation.  For asymmetric cryptography, some more tweaks are incorporated.


Comments

Post a Comment

Popular posts from this blog

Expanded Password System to Complement FIDO2

2 is larger than 1 but is not necessarily stronger than 1, as two children could be overwhelmed by a grown-up. For a two-factor authentication to be really reliable, each factor should be reasonably secure and usable enough. On the other hand, ‘password-less’ authentication, however attractive it might sound, would only benefit bad guys as examined in the link page - https://www.linkedin.com/pulse/removal-passwords-its-security-effect-hitoshi-kokumai/ People who offer a token as 'a factor' of two factor authentication schemes could all be viewed as our potential down-stream partners. Among them are the people who offer FIDO2-compatible solutions. Put together, we could come up with the two-factor authentications that are much more reliable than otherwise.
Post a Comment
Read more

Quest for Global Ubiquity

We wish to make our Expanded Password System solutions readily available to all the global citizens: rich and poor, young and old, healthy and disabled, literate and illiterate, in peace and in disaster. For achieving such global ubiquity, we will need more and more research into such diverse disciplines as psychology, sociology, behavioural economics and brain science in addition to cryptography, safe coding and other security technologies. Your shout would be welcomed if you happen to know researchers who may be interested to include the issue of ‘identity assurance by our own VOLITION and MEMORY’ in their study subjects or if you yourself are interested to join us. We will shortly launch the global operation of promoting Expanded Password System from our headquarters set up in UK and this research program, which should naturally be international, is to play a significant role in it. Linked is my article posted 6 years ago, which might indicate an aspect of what we
Post a Comment
Read more

Biometrics for Increasing and Decreasing Security

https://www.fedscoop.com/phone-cases-security-air-force-disa/ It could be a correct use of biometrics for increasing security if biometrics is used for continuously monitoring the user's voice and behaviors to detect when a bad guy has grabbed the logged-in device from the user. Demand the user's password afresh, and the bad guy could be turned away as discussed here - "Anything used correctly is useful and so are UV, disinfectant and biometrics." https://www.linkedin.com/posts/hitoshikokumai_digital-identity-anything-used-correctly-activity-6663264695664934913-S2FS It could be a wrong use of biometrics for decreasing security if biometrics is used as a second authenticator along with a default password as examined here - "Early models of smartphones were safer than newer models - How come?" https://www.linkedin.com/pulse/early-models-smartphones-were-safer-than-newer-how-come-kokumai Windows Hello for payment authentication would be fi
Post a Comment
Read more