Tim Ruffing's guest appearances

Tim Ruffing

Stephan Livera Podcast

Monero Talk

Einundzwanzig, der Bitcoin Podcast

The Chaincode Podcast

Aaron Van Wirdum

Peter Todd

Giacomo Zucco

Max Keiser

Alex Gladstein

Andreas M. Antonopoulos

Andrew Poelstra

Jack Mallers

Jimmy Song

Rodolfo Novak

Steve Jain

Caitlin Long

SLP251 Dan

Margot Paez

William Clemente

OwlTail

Pieter Wuille

We continue the conversation with Pieter Wuille and Tim Ruffing and Nesting, ROAST, Half-Aggregation, Adaptor Signatures, atomic swaps and more. If you have not tuned into the first part of this conversation, we recommend listening to that one first.  We cover: - Nesting (00:49) - ROAST (12:09) - Cross-input Signature Aggregation (18:49) - Half-aggregation (34:32)   - Half-Aggregation of BIP 340 Signatures and BIP340 - Adaptor signatures and atomic swaps (39:32)  Further resources:  Stephan Livera Podcast #400 Jonas Nick and Tim Ruffing - Half Signature Aggregation 

We continue the conversation with <a href="https://twitter.com/pwuille" rel="nofollow" target="_blank">Pieter Wuille</a> and <a href="https://twitter.com/real_or_random" rel="nofollow" target="_blank">Tim Ruffing</a> and Nesting, ROAST, Half-Aggregation, Adaptor Signatures, atomic swaps and more. If you have not tuned into the first part of this conversation, we recommend listening to <a href="http://127.0.0.1:4000/2022/12/15/pieter-wuille-tim-ruffing-schnorr-musig-part1" rel="nofollow" target="_blank">that one</a> first. We cover: - Nesting (00:49) - <a href="https://eprint.iacr.org/2022/550.pdf" rel="nofollow" target="_blank">ROAST</a> (12:09) - Cross-input Signature Aggregation (18:49) - Half-aggregation (34:32)   - <a href="https://blog.blockstream.com/half-aggregation-of-bip-340-signatures/" rel="nofollow" target="_blank">Half-Aggregation of BIP 340 Signatures</a> and <a href="https://github.com/ElementsProject/cross-input-aggregation/blob/master/half-aggregation.mediawiki" rel="nofollow" target="_blank">BIP340</a> - Adaptor signatures and atomic swaps (39:32) Further resources: <ul> <li><a href="https://stephanlivera.com/episode/400/" rel="nofollow" target="_blank">Stephan Livera Podcast #400 Jonas Nick and Tim Ruffing - Half Signature Aggregation</a></li> </ul>

Pieter Wuille and Tim Ruffing - Nesting, ROAST, Half-Aggregation, Adaptor Signatures (part 2)

Pieter Wuille and Tim Ruffing treat us to a conversation about Schnorr, multi-signatures, MuSig, and more. We covered a lot so this is part one of a two part conversation.  We discussed: - When to roll your own cryptography (01:31) - Schnorr Signatures (09:01)   - Why is Schnorr preferable to ECDSA? (10:55) - Schnorr efficiency improvements (15:52) - Multisigs (23:16) - MuSig (25:07)   - Yannick Seurin   - Rogue key attack or key cancellation attack (31:00)   - Bellare-Neven (32:12) - Interactive versus non-interactive protocols (35:30) - FROST (42:42)

<a href="https://twitter.com/pwuille" rel="nofollow" target="_blank">Pieter Wuille</a> and <a href="https://twitter.com/real_or_random" rel="nofollow" target="_blank">Tim Ruffing</a> treat us to a conversation about Schnorr, multi-signatures, MuSig, and more. We covered a lot so this is part one of a two part conversation. We discussed: - When to roll your own cryptography (01:31) - Schnorr Signatures (09:01)   - Why is Schnorr preferable to ECDSA? (10:55) - Schnorr efficiency improvements (15:52) - Multisigs (23:16) - <a href="https://bitcoinops.org/en/topics/musig/" rel="nofollow" target="_blank">MuSig</a> (25:07)   - <a href="http://yannickseurin.free.fr/" rel="nofollow" target="_blank">Yannick Seurin</a>   - Rogue key attack or key cancellation attack (31:00)   - <a href="https://btctranscripts.com/bitcoin-core-dev-tech/2018-03-05-bellare-neven/" rel="nofollow" target="_blank">Bellare-Neven</a> (32:12) - Interactive versus non-interactive protocols (35:30) - <a href="https://eprint.iacr.org/2020/852.pdf" rel="nofollow" target="_blank">FROST</a> (42:42)

Pieter Wuille and Tim Ruffing, Schnorr, MuSig, FROST and more - Episode 26

Dhruv, Pieter Wuille and Tim Ruffing join me on the show to talk about their project to bring encryption to Bitcoin Core. We discuss:  What the current state of things is Packet inspection and making bitcoin slightly more private The new proposal for encryption Impact on nodes Feedback wanted  Links:  BIP324: Enable v2 P2P encrypted transport #24545 https://github.com/dhruv/bips/blob/bip324/bip-0324.mediawiki Site: Bip324.com Twitter: @dhruv Twitter: @pwuille Twitter: @real_or_random  Sponsors:  Swan Bitcoin Mempool.space Unchained Capital (code LIVERA) CoinKite.com(code LIVERA) Blockstream.com  Stephan Livera links:  Follow me on Twitter @stephanlivera Subscribe to the podcast Patreon @stephanlivera

Dhruv, Pieter Wuille and Tim Ruffing join me on the show to talk about their project to bring encryption to Bitcoin Core. We discuss: <ul> <li>What the current state of things is</li> <li>Packet inspection and making bitcoin slightly more private</li> <li>The new proposal for encryption</li> <li>Impact on nodes</li> <li>Feedback wanted</li> </ul> Links: <ul> <li><a href="https://github.com/bitcoin/bitcoin/pull/24545" rel="noreferrer nofollow noopener" target="_blank">BIP324: Enable v2 P2P encrypted transport #24545</a></li> <li><a href="https://github.com/dhruv/bips/blob/bip324/bip-0324.mediawiki" rel="noreferrer nofollow noopener" target="_blank">https://github.com/dhruv/bips/blob/bip324/bip-0324.mediawiki</a></li> <li>Site: <a href="https://bip324.com/" rel="noreferrer nofollow noopener" target="_blank">Bip324.com</a></li> <li>Twitter: <a href="https://twitter.com/dhruv" rel="noreferrer nofollow noopener" target="_blank">@dhruv</a></li> <li>Twitter: <a href="https://twitter.com/pwuille" rel="noreferrer nofollow noopener" target="_blank">@pwuille</a></li> <li>Twitter: <a href="https://twitter.com/real_or_random" rel="noreferrer nofollow noopener" target="_blank">@real_or_random</a></li> </ul> Sponsors: <ul> <li><a href="http://swanbitcoin.com/livera" rel="noreferrer nofollow noopener" target="_blank">Swan Bitcoin</a></li> <li><a href="https://mempool.space/" rel="noreferrer nofollow noopener" target="_blank">Mempool.space</a></li> <li><a href="https://unchained-capital.com/concierge" rel="noreferrer nofollow noopener" target="_blank">Unchained Capital</a> (code LIVERA)</li> <li><a href="http://coinkite.com/" rel="noreferrer nofollow noopener" target="_blank">CoinKite.com</a>(code LIVERA)</li> <li><a href="https://blockstream.com/green/" rel="noreferrer nofollow noopener" target="_blank">Blockstream.com</a></li> </ul> Stephan Livera links: <ul> <li>Follow me on Twitter <a href="https://twitter.com/stephanlivera" rel="noreferrer nofollow noopener" target="_blank">@stephanlivera</a></li> <li><a href="https://plinkhq.com/i/1415720320" rel="noreferrer nofollow noopener" target="_blank">Subscribe to the podcast</a></li> <li>Patreon <a href="https://www.patreon.com/StephanLivera" rel="noreferrer nofollow noopener" target="_blank">@stephanlivera</a></li></ul>

SLP433 v2 P2P Transport Protocol for Bitcoin Core (BIP324) with Pieter Wuille Dhruv and Tim Ruffing

Jonas Nick

Jonas Nick &amp; Tim Ruffing, bitcoin researchers and contributors at Blockstream rejoin me on the show, this time to chat about half signature aggregation. This is a scaling technique that can help scale Bitcoin and enable more transactions inside a block or help with L2 protocols. We discuss:  How this idea came to be What is half aggregation vs ‘full aggregation’? What kind of savings are possible? What are the downsides? How would this work in practice? Is a soft fork required? Next steps for discussion, research, contributors  Links:  Twitter: @n1ckler Twitter: @real_or_random Blog post: Half-Aggregation of BIP 340 Signatures CISA github: Cross-Input Signature Aggregation (CISA) Half aggregation: Half-Aggregation of BIP 340 signatures  Previous Episodes  SLP222 Jonas Nick and Tim Ruffing What’s MuSig2? What Does it Mean for Bitcoin Multisig? SLP321 On-chain scaling with Bitcoin Core Developers Pieter Wuille, Andrew Poelstra, Andrew Chow &amp; Murch  Sponsors  Swan Bitcoin Braiins.com Voltage Unchained Capital (code LIVERA) CoinKite.com(code LIVERA)  Stephan Livera links:  Show notes and website Follow me on Twitter @stephanlivera Subscribe to the podcast Patreon @stephanlivera

Jonas Nick &amp; Tim Ruffing, bitcoin researchers and contributors at Blockstream rejoin me on the show, this time to chat about half signature aggregation. This is a scaling technique that can help scale Bitcoin and enable more transactions inside a block or help with L2 protocols. We discuss: <ul> <li>How this idea came to be</li> <li>What is half aggregation vs ‘full aggregation’?</li> <li>What kind of savings are possible?</li> <li>What are the downsides?</li> <li>How would this work in practice?</li> <li>Is a soft fork required?</li> <li>Next steps for discussion, research, contributors</li> </ul> Links: <ul> <li>Twitter: <a href="https://twitter.com/n1ckler" rel="noreferrer nofollow noopener" target="_blank">@n1ckler</a></li> <li>Twitter: <a href="https://twitter.com/real_or_random" rel="noreferrer nofollow noopener" target="_blank">@real_or_random</a></li> <li>Blog post: <a href="https://blog.blockstream.com/half-aggregation-of-bip-340-signatures/" rel="noreferrer nofollow noopener" target="_blank">Half-Aggregation of BIP 340 Signatures</a></li> <li>CISA github: <a href="https://github.com/ElementsProject/cross-input-aggregation" rel="noreferrer nofollow noopener" target="_blank">Cross-Input Signature Aggregation</a><a href="https://github.com/ElementsProject/cross-input-aggregation" rel="noreferrer nofollow noopener" target="_blank"> </a><a href="https://github.com/ElementsProject/cross-input-aggregation" rel="noreferrer nofollow noopener" target="_blank">(CISA)</a></li> <li>Half aggregation: <a href="https://github.com/ElementsProject/cross-input-aggregation/blob/master/half-aggregation.mediawiki" rel="noreferrer nofollow noopener" target="_blank">Half-Aggregation of BIP 340 signatures</a></li> </ul> Previous Episodes <ul> <li><a href="https://stephanlivera.com/episode/222/" rel="noreferrer nofollow noopener" target="_blank">SLP222 Jonas Nick and Tim Ruffing What’s MuSig2? What Does it Mean for Bitcoin Multisig?</a></li> <li><a href="https://stephanlivera.com/episode/321/" rel="noreferrer nofollow noopener" target="_blank">SLP321 On-chain scaling with Bitcoin Core Developers Pieter Wuille, Andrew Poelstra, Andrew Chow &amp; Murch</a></li> </ul> Sponsors <ul> <li><a href="http://swanbitcoin.com/livera" rel="noreferrer nofollow noopener" target="_blank">Swan Bitcoin</a></li> <li><a href="http://braiins.com/" rel="noreferrer nofollow noopener" target="_blank">Braiins.com</a></li> <li><a href="https://voltage.cloud/" rel="noreferrer nofollow noopener" target="_blank">Voltage</a></li> <li><a href="https://unchained-capital.com/concierge" rel="noreferrer nofollow noopener" target="_blank">Unchained Capital</a> (code LIVERA)</li> <li><a href="http://coinkite.com/" rel="noreferrer nofollow noopener" target="_blank">CoinKite.com</a>(code LIVERA)</li> </ul> Stephan Livera links: <ul> <li><a href="https://stephanlivera.com/" rel="noreferrer nofollow noopener" target="_blank">Show notes and website</a></li> <li>Follow me on Twitter <a href="https://twitter.com/stephanlivera" rel="noreferrer nofollow noopener" target="_blank">@stephanlivera</a></li> <li><a href="https://plinkhq.com/i/1415720320" rel="noreferrer nofollow noopener" target="_blank">Subscribe to the podcast</a></li> <li>Patreon <a href="https://www.patreon.com/StephanLivera" rel="noreferrer nofollow noopener" target="_blank">@stephanlivera</a></li></ul>

SLP400 Jonas Nick & Tim Ruffing - Half Signature Aggregation: What is it and how does it help scale Bitcoin?

Bitcoin Multisig

Confused about what MuSig2 is? As Bitcoin’s Schnorr Taproot soft fork has now been merged into Bitcoin Core (but not yet activated), it’s worthwhile understanding what some of the new multisignature schemes are for using Taproot. Jonas Nick and Tim Ruffing, cryptographers working at Blockstream join me on the show to talk about their latest, MuSig2. Jonas Nick‘s Links:  Twitter: @n1ckler  Tim Ruffing‘s Links:  Twitter: @real_or_random  Links:  MuSig2 paper: Simple Two-Round Schnorr Multi-Signatures MuSig-DN  Prior episodes:  SLP137 AJ Towns – Schnorr Taproot Tapscript BIPs SLP200 Christian Decker – ANYPREVOUT, MPP, Mitigating LN Attacks  Sponsors:  Swan Bitcoin Unchained Capital (code LIVERA) Knox Custody Bitcoin Black Friday CypherSafe  Stephan Livera links:  Show notes and website Follow me on twitter @stephanlivera Subscribe to the podcast Patreon @stephanlivera

Confused about what MuSig2 is? As Bitcoin’s Schnorr Taproot soft fork has now been merged into Bitcoin Core (but not yet activated), it’s worthwhile understanding what some of the new multisignature schemes are for using Taproot. Jonas Nick and Tim Ruffing, cryptographers working at Blockstream join me on the show to talk about their latest, MuSig2. Jonas Nick‘s Links: <ul> <li>Twitter: <a href="https://twitter.com/n1ckler/" rel="noreferrer noopener nofollow" target="_blank">@n1ckler</a></li> </ul> Tim Ruffing‘s Links: <ul> <li>Twitter: <a href="https://twitter.com/real_or_random" rel="noreferrer noopener nofollow" target="_blank">@real_or_random</a></li> </ul> Links: <ul> <li><a href="https://eprint.iacr.org/2020/1261" rel="noreferrer noopener nofollow" target="_blank">MuSig2 paper: Simple Two-Round Schnorr Multi-Signatures</a></li> <li><a href="https://eprint.iacr.org/2020/1057" rel="noreferrer noopener nofollow" target="_blank">MuSig-DN</a></li> </ul> Prior episodes: <ul> <li><a href="https://stephanlivera.com/episode/137/" rel="noreferrer noopener nofollow" target="_blank">SLP137 AJ Towns – Schnorr Taproot Tapscript BIPs</a></li> <li><a href="https://stephanlivera.com/episode/200/" rel="noreferrer noopener nofollow" target="_blank">SLP200 Christian Decker – ANYPREVOUT, MPP, Mitigating LN Attacks</a></li> </ul> Sponsors: <ul> <li><a href="http://swanbitcoin.com/livera" rel="noreferrer noopener nofollow" target="_blank">Swan Bitcoin</a></li> <li><a href="https://unchained-capital.com/the-vault-concierge-onboarding-package/" rel="noreferrer noopener nofollow" target="_blank">Unchained Capital</a> (code LIVERA)</li> <li><a href="http://knoxcustody.com/" rel="noreferrer noopener nofollow" target="_blank">Knox Custody</a></li> <li><a href="https://bitcoinmagazine.com/" rel="noreferrer noopener nofollow" target="_blank">Bitcoin Black Friday</a></li> <li><a href="https://cyphersafe.io/" rel="noreferrer noopener nofollow" target="_blank">CypherSafe</a></li> </ul> Stephan Livera links: <ul> <li><a href="https://stephanlivera.com/" rel="noreferrer noopener nofollow" target="_blank">Show notes and website</a></li> <li><a href="https://twitter.com/stephanlivera" rel="noreferrer noopener nofollow" target="_blank">Follow me on twitter @stephanlivera</a></li> <li><a href="https://plinkhq.com/i/1415720320" rel="noreferrer noopener nofollow" target="_blank">Subscribe to the podcast</a></li> <li><a href="https://www.patreon.com/StephanLivera" rel="noreferrer noopener nofollow" target="_blank">Patreon</a> @stephanlivera</li></ul>

SLP222 Jonas Nick and Tim Ruffing What’s MuSig2? What Does it Mean for Bitcoin Multisig?

TODAY'S 🎙SHOW: We speak to Tim Ruffing, the co-author of "Omniring: Scaling Up Private Payments Without Trusted Setup", a new fully-fledged RingCT which could potentially improve Monero’s privacy. Links: Omnirring Paper: https://eprint.iacr.org/2019/580.pdf Twitter: @real_or_randomDon't forget to SUBSCRIBE! The more subscribers, the more we can help Monero grow! 🚀Listen &amp; Reach out to us: 🎧PODCAST:  ITUNES: https://apple.co/34W7FVp SPOTIFY: https://spoti.fi/2t1y9b4 GOOGLE PLAY: https://bit.ly/363JYMo STITCHER: https://bit.ly/2tUcIck WEBSITE: https://www.monerotalk.live 📧CONTACT: monerotalklive@gmail.comGet 🤓😎Social with us: TWITTER: https://twitter.com/monerotalk FACEBOOK: https://www.facebook.com/MoneroTalk/ HOST: https://twitter.com/douglastuman

TODAY'S 🎙SHOW: We speak to Tim Ruffing, the co-author of "Omniring: Scaling Up Private Payments Without Trusted Setup", a new fully-fledged RingCT which could potentially improve Monero’s privacy. Links: Omnirring Paper: <a href="https://eprint.iacr.org/2019/580.pdf" rel="nofollow" target="_blank">https://eprint.iacr.org/2019/580.pdf</a> Twitter: @real_or_randomDon't forget to SUBSCRIBE! The more subscribers, the more we can help Monero grow! 🚀Listen &amp; Reach out to us: 🎧PODCAST: ITUNES: <a href="https://apple.co/34W7FVp" rel="nofollow" target="_blank">https://apple.co/34W7FVp</a> SPOTIFY: <a href="https://spoti.fi/2t1y9b4" rel="nofollow" target="_blank">https://spoti.fi/2t1y9b4</a> GOOGLE PLAY: <a href="https://bit.ly/363JYMo" rel="nofollow" target="_blank">https://bit.ly/363JYMo</a> STITCHER: <a href="https://bit.ly/2tUcIck" rel="nofollow" target="_blank">https://bit.ly/2tUcIck</a> WEBSITE: <a href="https://www.monerotalk.live" rel="nofollow" target="_blank">https://www.monerotalk.live</a> 📧CONTACT: <a href="mailto:monerotalklive@gmail.com" rel="nofollow">monerotalklive@gmail.com</a>Get 🤓😎Social with us: TWITTER: <a href="https://twitter.com/monerotalk" rel="nofollow" target="_blank">https://twitter.com/monerotalk</a> FACEBOOK: <a href="https://www.facebook.com/MoneroTalk/" rel="nofollow" target="_blank">https://www.facebook.com/MoneroTalk/</a> HOST: <a href="https://twitter.com/douglastuman" rel="nofollow" target="_blank">https://twitter.com/douglastuman</a>