Root Causes: A PKI and Security Podcast

757 episodes

Root Causes 673: Harvest Now, Decrypt 83 Years Later
09/10/2026 | 15 mins.
Researchers have used AI to decode two German Enigma messages that have remained unbroken since the second world war. We describe how this was accomplished.
Root Causes 672: New AI-driven Attack on RSA 1024 Revealed
07/10/2026 | 15 mins.
This year we have seen a series of AI-enabled cryptographic attacks. In this episode we discuss a new exploit to abuse signing mechanisms in HSMs.
Root Causes 671: IETF Releases MTC Draft 6
03/10/2026 | 18 mins.
The PLANTS working group in IETF recently released its draft 6 of the Merkle Tree Certificates standard. We go over what is new in this draft.
Root Causes 670: Apple Announces Its MTC Root Program
01/10/2026 | 22 mins.
Apple has announced it will support Merkle Tree Certificates for PQC and has released a draft root store policy. We share some of the surprising requirements in this draft.
Root Causes 669: The clientAuth EKU Deprecation Is Coming
28/09/2026 | 10 mins.
Publicly trusted client authentication certificates have a hard deadline to be deprecated in Q1 2027. Not everyone is ready for that. We discuss some of the reasons why and what to do about it.

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About Root Causes: A PKI and Security Podcast

Digital certificate industry veterans Tim Callan and Jason Soroko explore the issues surrounding digital identity, PKI, and cryptographic connections in today's dynamic and evolving computing world. Best practices in digital certificates are continually under pressure from technology trends, new laws and regulations, cryptographic advances, and the evolution of our computing architectures to be more virtual, agile, ubiquitous, and cloud-based. Jason and Tim (and the occasional guest subject matter expert) will help you stay current on developments in this essential technology platform and to understand the whys and wherefores of popular Public Key Infrastructures.

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