Posts tagged Tadge Dryja
Cryptanalysis of Curl-P and Other Attacks on the IOTA Cryptocurrency

By Ethan Heilman (Boston Uni), Neha Narula (MIT Media Lab), Garrett Tanzer (Harvard), James Lovejoy (MIT Media Lab), Michael Colavita (Harvard), Madars Virza (MIT Media Lab), and Tadge Dryja (MIT Media Lab)

We present attacks on the cryptography formerly used in the IOTA blockchain, including under certain conditions the ability to forge signatures. We developed practical attacks on IOTA’s cryptographic hash function Curl-P-27, allowing us to quickly generate short colliding messages. These collisions work even for messages of the same length. Exploiting these weaknesses in Curl-P-27, we broke the EU-CMA security of the former IOTA Signature Scheme (ISS). Finally, we show that in a chosen-message setting we could forge signatures and multi-signatures of valid spending transactions (called bundles in IOTA).

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Coindesk's 'This Scaling Tech Could Let You Sync Bitcoin Straight From Your Phone' using UTreeXO created by Tadge Dryja

“Maybe we don’t have to store everything ourselves.”

That’s Tadge Dryja, cryptocurrency research scientist at the MIT Digital Currency Initiative, explaining the concept behind his bitcoin scaling solution, “utreexo.”

Based on an idea that has been pursued by developers for many years, utreexo seeks to streamline an aspect of bitcoin’s code that leads to heavy storage requirements over time.

Read the original article here

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Coindesk's 'Bitcoin at 10[years old]': From Fearing Bitcoin To Fixing Its Worst Problem: Tadge Dryja

A celebration of 10 years of Bitcoin features DCI's Tadge Dryja story:

““I thought I would go to jail.”

That’s why Tadge Dryja, one of two principal researchers who would go on to envision lightning – what has become arguably the most important innovation in the quest to bring bitcoin to the masses – kept his passion for the technology to himself when he first heard about it in 2011.”

Read the article on Coindesk here

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