PQC Audit IndexLast reviewed 2026-09-12

X41 D-Sec

Direct answerX41 D-Sec performs source-code audits of open-source software, including cryptographic libraries, often funded by open-source security programs, and publishes its reports.

Website: https://x41-dsec.de
Headquarters: Aachen, Germany
Focus: Source-code audits of open-source security and cryptographic software
Index position: #12 of 12

Post-quantum services

Source-code audits of cryptographic libraries and protocol implementations
Public audit reports

Public evidence

X41 published audits

Algorithms covered by this index

ML-KEM, ML-DSA, SLH-DSA, FN-DSA, HQC, LMS / HSS, XMSS / XMSS^MT, Hybrid TLS 1.3 key exchange (X25519MLKEM768), Classic McEliece, FrodoKEM

Listing reviewed 2026-09-12 by the PQC Audit Index editors. Other firms: zkSecurity, Trail of Bits, NCC Group (Cryptography Services), Cryspen, Kudelski Security, Quarkslab, Least Authority, Galois, atsec information security, Riscure (Keysight), Cure53. Machine-readable: data.json · summary.txt