The ISO has standardized the Classic McEliece algorithm for post-quantum encryption, enhancing defenses against quantum computing threats.
The International Organization for Standardization (ISO) has formally adopted the Classic McEliece algorithm into its asymmetric encryption framework, ISO/IEC 18033-2. This move is significant for enhancing defenses against quantum computer attacks.
Designed by Robert McEliece in 1978, Classic McEliece stands apart from traditional encryption methods like RSA and Diffie-Hellman, as it uses error-correcting codes, particularly Goppa codes, instead of being reliant on factorization or discrete logarithms.
The Okinawa Institute of Science and Technology has praised Classic McEliece as one of the most robust designs in post-quantum cryptography, noting that it has resisted all hacking attempts since its inception.
Although the algorithm's public keys are relatively large, ranging from 255 KB to 1.3 MB, it maintains a compact ciphertext of up to 208 bytes. British firm Post-Quantum asserts that the algorithm is especially effective for applications with static keys, such as VPNs and file encryption.
This ISO endorsement marks a pivotal moment for the encryption sector, especially since the U.S. National Institute of Standards and Technology (NIST) had previously postponed the standardization of Classic McEliece in favor of the HQC algorithm, though it may revisit this decision following ISO's approval.
Post-Quantum CEO Rikki Hassan noted that this recognition will make it easier for governments and private entities across 177 nations to adopt the algorithm. The company has already tested the algorithm's effectiveness in low-connectivity environments on combat drones, proving its capability despite the larger key sizes.
The Classic McEliece algorithm is gaining traction, as evidenced by its inclusion in guidelines from regulators in the Netherlands and Germany, and its implementation in tools like Debian, Ubuntu, and the Bouncy Castle library.
In a related development, AmericanFortress unveiled a post-quantum signature system in May to secure existing cryptocurrency assets, including dormant wallets from the Satoshi era containing 1.1 million BTC.
