LEDAcrypt Public Key Cryptosystems

This is the homepage of the LEDAcrypt, a post-quantum asymmetric cryptoscheme suite built on Quasi-Cyclic Low Density Parity Check (QC-LDPC) codes. The suite includes a Key Encapsulation Method (KEM) and a Public Key Cryptosystem (PKC), currently undergoing evaluation in the second round of the NIST Post-Quantum Cryptography Standardization process.

Here we provide:

  • The latest version of the cryptosystem specification
  • An archive containing the reference implementation and optimized implementations matching the submission to the second round of the NIST Post Quantum Standardization Initiative

The old pages and submission packages for LEDAkem and LEDApkc are still available for history tracking purposes; however they should be considered superseded by LEDAcrypt.