New Privacy Problems in Bitcoin clients

jackjack

legendary

Activity: 1176

Merit: 1280

May Bitcoin be touched by his Noodly Appendage

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1. When a checkpoint is reached all blocks that do not belong to the best chain are ~~removed forever from the block chain~~ (or from the inventory)

No need to delete it from the blockchain

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2. All block hashes up to the last checkpoint are stored inside the Satoshi client so that no unknown block can be sent.

225000 * 32 bytes = 7200000 bytes = 7.2MB
Not sure it's worth it as 1. is enough

Sergio_Demian_Lerner

hero member

Activity: 555

Merit: 654

Quote from: cr1776 on June 01, 2013, 05:41:40 AM

From the post: "But again, the core developers think it’s not worth implementing this fix."

Do you believe that the core developers just do not want to implement the two changes you suggest? Or would they block someone else making those changes and incorporating them?

I think that if someone implements them, they may apply the patches. The decision not to implement them right away may be to a lack of resources to research and implement the patches.

cr1776

legendary

Activity: 4228

Merit: 1313

From the post: "But again, the core developers think it’s not worth implementing this fix."

Do you believe that the core developers just do not want to implement the two changes you suggest? Or would they block someone else making those changes and incorporating them?

Sergio_Demian_Lerner

hero member

Activity: 555

Merit: 654

Some new attacks on the privacy of users running a full node in standard clients. Details posted after responsible disclosure and private talks with the dev team.

https://bitslog.wordpress.com/2013/05/31/more-privacy-vulnerabilities-in-bitcoin/

This time I posted in my blog, since I'll try to keep all security/privacy related posts together for easy indexing.

Best regards, Sergio.

Topic: New Privacy Problems in Bitcoin clients (Read 825 times)