Attention, Premium subscribers! There is a new (GASP) Rumor Mill post, just for you! (More details forthcoming!)

General Protection Fault: GPF Comics Archive

First Comic Previous Comic Next Comic Latest Comic Wednesday, January 17, 2018

[Comic for Wednesday, January 17, 2018]

Transcription

[[Sharon continues to examine the "shadowCoin" source code while Trudy attempts to help. Sharon points at a particular section on the computer monitor.]]
Sharon: If I didn't know any better, I'd almost say this looks like a cosigning subroutine.
Trudy: "Cosigning"? So... it adds another signature to something?

Sharon: Possibly. The whole basis for this "shadowCoin" cryptocurrency is digital signatures. When you make a transaction, it gets signed with the wallet's private key.

Sharon: However, it looks like this code applies a second, hard-coded secret signature to every transaction.
Trudy: [Surprised] What does that mean?
Sharon: Right now, I have no idea.

Trudy: [Suspicious] What would adding a second signature accomplish?
Sharon: [Concentrating] Other than inserting the owner of the second key into each and every transaction? Almost anything...

First Comic Previous Comic Next Comic Latest Comic
 

 DEC   January 2018   FEB
31123456
78910111213
14151617181920
21222324252627
28293031123