Cryptography FM
In-depth, substantive discussions on the latest news and research in applied cryptography.
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Episoden
27.02.2023
49 Minuten
For several years, CryptoHack has been a free platform for learning
modern cryptography through fun and challenging programming
puzzles. From toy ciphers to post-quantum cryptography, CryptoHack
has a wide-ranging and ever increasing library of puzzles for both
the aspiring and accomplished cryptographer. On this episode, Nadim
and Lucas are joined by Giacomo Pope and Laurence Tennant, the
founders of CryptoHack, to discuss how the platform came to be, and
how it evolved, as well as how to improve cryptographic pedagogy
more broadly. Special Guests: Giacomo Pope and Laurence Tennant.
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25.01.2023
53 Minuten
On April 19th 2022, Neil Madden disclosed a vulnerability in many
popular Java runtimes and development kits. The vulnerability,
dubbed "Psychic Signatures", lies in the cryptography for ECDSA
signatures and allows an attacker to bypass signature checks
entirely for these signatures. How are popular cryptographic
protocol implementations in Java affected? What's the state of Java
cryptography as a whole? Join Neil, Nadim and Lucas as they
discuss. Music composed by Yasunori Mitsuda. Special Guest: Neil
Madden.
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16.01.2023
52 Minuten
Threema is a Swiss encrypted messaging application. It has more
than 10 million users and more than 7000 on-premise customers.
Prominent users of Threema include the Swiss Government and the
Swiss Army, as well as the current Chancellor of Germany, Olaf
Scholz. Threema has been widely advertised as a secure alternative
to other messengers. Kenny, Kien and Matteo from the ETH Zurich
Applied Cryptography Group present seven attacks against the
cryptographic protocols used by Threema, in three distinct threat
models. All the attacks are accompanied by proof-of-concept
implementations that demonstrate their feasibility in practice.
Links and papers discussed in the show: * Three Lessons from
Threema (https://breakingthe3ma.app/) Special Guests: Kenny
Paterson, Kien Tuong Truong, and Matteo Scarlata.
Mehr
24.08.2021
47 Minuten
Benjamin Wesolowski talks about his latest paper in which he
mathematically proved that the two fundamental problems underlying
isogeny-based cryptography are equivalent. Links and papers
discussed in the show: * The supersingular isogeny path and
endomorphism ring problems are equivalent
(https://eprint.iacr.org/2021/919) * Episode 5: Isogeny-based
Cryptography for Dummies! (https://www.cryptography.fm/5) Music
composed by Toby Fox and performed by Sean Schafianski
(https://seanschafianski.bandcamp.com/). Special Guest: Benjamin
Wesolowski.
Mehr
20.07.2021
43 Minuten
A team of cryptanalysits presents the first publicly available
cryptanalytic attacks on the GEA-1 and GEA-2 algorithms. Instead of
providing full 64-bit security, they show that the initial state of
GEA-1 can be recovered from as little as 65 bits of known keystream
(with at least 24 bits coming from one frame) in time 240 GEA-1
evaluations and using 44.5 GiB of memory. The attack on GEA-1 is
based on an exceptional interaction of the deployed LFSRs and the
key initialization, which is highly unlikely to occur by chance.
This unusual pattern indicates that the weakness is intentionally
hidden to limit the security level to 40 bit by design.
Cryptanalysis of the GPRS Encryption Algorithms GEA-1 and GEA-2
(https://eprint.iacr.org/2021/819) Music composed by Toby Fox and
performed by Sean Schafianski
(https://seanschafianski.bandcamp.com/). Special Guests: Gaëtan
Leurent and Håvard Raddum.
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Über diesen Podcast
Cryptography FM is a regular podcast with news and a featured
interview covering the latest developments in theoretical and
applied cryptography. Whether it's a new innovative paper on
lattice-based cryptography or a novel attack on a secure messaging
protocol, we'll get the people behind it on Cryptography FM.
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