Single-Core CPU Cracked Post-Quantum Encryption Candidate Algorithm in Just an Hour

A late-stage candidate encryption algorithm that was meant to withstand decryption by powerful quantum computers in the future has been trivially cracked by using a computer running Intel Xeon CPU in an hour's time. The algorithm in question is SIKE — short for Supersingular Isogeny Key...

A New Attack Easily Knocked Out a Potential Encryption Algorithm

SIKE was a contender for post-quantum-computing encryption. It took researchers an hour and a single PC to break it...

RUSTSEC-2022-0045 Post-Quantum Key Encapsulation Mechanism SIKE broken

Wouter Castryck and Thomas Decru presented an efficient key recovery attack on the SIDH protocol. As a result, the secret key of SIKEp751 can be recovered in a matter of hours. The SIKE and SIDH schemes will be removed from oqs 0.7.2. The affected schemes are the oqs::kem::Algorithm::Sike and...

Post-Quantum Key Encapsulation Mechanism SIKE broken

Wouter Castryck and Thomas Decru presented an efficient key recovery attack on the SIDH protocol. As a result, the secret key of SIKEp751 can be recovered in a matter of hours. The SIKE and SIDH schemes will be removed from oqs 0.7.2. The affected schemes are the oqs::kem::Algorithm::Sike and...

KEMs and Post-Quantum age

Theyre here! NIST selected a first batch of post-quantum cryptographic key exchange and signature algorithms. The report is a nice read that explains a lot of the goals, candidates, selections, and rationales. I recommend Sections 2, 3.3, and 4.1. For key exchange, NIST selected only...

NIST Announces First Four Quantum-Resistant Cryptographic Algorithms

The U.S. Department of Commerce's National Institute of Standards and Technology NIST has chosen the first set of quantum-resistant encryption algorithms that are designed to "withstand the assault of a future quantum computer." The post-quantum cryptography PQC technologies include the...

The NSA Says that There are No Known Flaws in NIST’s Quantum-Resistant Algorithms

Rob Joyce, the director of cybersecurity at the NSA, said so in an interview: The NSA already has classified quantum-resistant algorithms of its own that it developed over many years, said Joyce. But it didnt enter any of its own in the contest. The agencys mathematicians, however, worked with NI...

RUSTSEC-2022-0047 Post-Quantum Signature scheme Rainbow level I parametersets broken

Ward Beullens found a practical key-recovery attack against Rainbow. The level I parametersets are removed from liboqs starting from version 0.7.2. Find the scientific details in Breaking Rainbow Takes a Weekend on a Laptop. This means all the oqs::sig::Algorithm::RainbowI variants are insecure...

Post-Quantum Signature scheme Rainbow level I parametersets broken

Ward Beullens found a practical key-recovery attack against Rainbow. The level I parametersets are removed from liboqs starting from version 0.7.2. Find the scientific details in Breaking Rainbow Takes a Weekend on a Laptop. This means all the oqs::sig::Algorithm::RainbowI variants are insecure...

Chinese Breakthrough in Quantum Computing a Warning for Security Teams

China’s top quantum-computer researchers have reported that they have achieved quantum supremacy, i.e., the ability to perform tasks a traditional supercomputer cannot. And while it’s a thrilling development, the inevitable rise of quantum computing means security teams are one step closer to...

More on NIST's Post-Quantum Cryptography

Back in July, NIST selected third-round algorithms for its post-quantum cryptography standard. Recently, Daniel Apon of NIST gave a talk detailing the selection criteria. Interesting stuff. NOTE: We're in the process of moving this blog to Wordpress. Comments will be disabled until the move it...

More on NIST’s Post-Quantum Cryptography

Back in July, NIST selected third-round algorithms for its post-quantum cryptography standard. Recently, Daniel Apon of NIST gave a talk detailing the selection criteria. Interesting stuff. NOTE: Were in the process of moving this blog to WordPress. Comments will be disabled until the move is...

More on NIST’s Post-Quantum Cryptography

Back in July, NIST selected third-round algorithms for its post-quantum cryptography standard. Recently, Daniel Apon of NIST gave a talk detailing the selection criteria. Interesting stuff. NOTE: Were in the process of moving this blog to WordPress. Comments will be disabled until the move is...

Update on NIST's Post-Quantum Cryptography Program

NIST has posted an update on their post-quantum cryptography program: After spending more than three years examining new approaches to encryption and data protection that could defeat an assault from a quantum computer, the National Institute of Standards and Technology NIST has winnowed the 69...

CVE-2019-16905

A Denial of service flaw was found in the way OpenSSH parsed certain specially crafted XMSS eXtended Merkle Signature Scheme private keys. Any OpenSSH functionality which parses private keys is vulnerable, for example: 1. If ‘sshd’ daemon is configured to use an XMSS host key that is malformed, i...

Real World Crypto 2018 (RWC 2018) brain dump

The 2018 edition of Real World Crypto RWC was in Zurich you can find the conference full program here.. I live in Switzerland so I was extremely happy about it. RWC is basically the best conference I ever attended and it will probably be so for a while. I almost risked to skip it due to flu but I...

Post-Quantum Algorithms

NIST has organized a competition for public-key algorithms secure against a quantum computer. It recently published all of its Round 1 submissions. Details of the NIST efforts are here. A timeline for the new algorithms is here...

Google Testing Post-Quantum Cryptography in Chrome

Plenty has been speculated since the Snowden documents were made public about the NSA’s interest in building a quantum computer that could break current encryption securing communication worldwide. Quantum computing on a practical scale is a distant goal, but some do exist that leverage some...