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When Bob and Alice Have a Secret … They Can Generate Another Secret: Meet J-PAKE

When Bob and Alice Have a Secret … They Can Generate Another Secret: Meet J-PAKE

J-PAKE (Password Authenticated Key Exchange by Juggling) was created by Hao and Ryan [1] and fully defined in RFC 8238 [2]. It is a…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
Secure Remote Password 6a (SRP6a)

Secure Remote Password 6a (SRP6a)

The storing of passwords is an obvious attack point on any system. The method to store these, such as with a hash of the password, is often…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
Can I Recover A Message From My Signature?

Can I Recover A Message From My Signature?

Wouldn’t it be amazing if I could sign my name on a message, and where my signature contains the details of the message? Someone could then…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
The Roots of ECDSA … Meet DSA

The Roots of ECDSA … Meet DSA

The Digital Signature Algorithm (DSA) is a standard defined in the Federal Information Processing Standard (FIPS 186) for digital…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
Do You Remember Carbon Copies? Here’s Blind Signatures.

Do You Remember Carbon Copies? Here’s Blind Signatures.

Do you remember the days of carbon copies? Well, they were often used as a receipt, and where there was blue carbon paper which copied your…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
In A World That Respects Privacy and Trust … Meet Blinded Signatures

In A World That Respects Privacy and Trust … Meet Blinded Signatures

The work of David Chaum on privacy showed the world that it could build a world of trust but preserve privacy. On the back of the work…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
260KB Public Key Sizes?

260KB Public Key Sizes?

Did you know that if Classic Mceliece is adopted for TLS handshaking, the public key will be 261,120 bytes in size, and will thus require…
Go to the profile of Prof Bill Buchanan OBE
Prof Bill Buchanan OBE
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