D Changes to the API

D.1 Document change history

D.1.1 Changes between Beta 1 and Beta 2

Clarifications and fixes

• Fixed the derivation of SLH-DSA key pairs to extract the correct number of bytes from the key derivation operation. See PSA_KEY_TYPE_SLH_DSA_KEY_PAIR.

• Clarified that the standard key formats are used in the psa_import_key() and psa_export_key() functions.

D.1.2 Changes between Beta 0 and Beta 1

Clarifications and fixes

• Added references from each section to the relevant APIs in PSA Certified Crypto API [PSA-CRYPT].

D.1.3 Beta release

First release of the PQC Extension.

• Added support for FIPS 203 ML-KEM key-encapsulation algorithm and keys. See Module Lattice-based key encapsulation.

• Added support for FIPS 204 ML-DSA signature algorithm and keys. See Module Lattice-based signatures.

• Added support for FIPS 205 SLH-DSA signature algorithm and keys. See Stateless Hash-based signatures.

• Added support for LMS and HSS stateful hash-based signature verification and public keys. See Leighton-Micali Signatures.

• Added support for XMSS and XMSS^MT stateful hash-based signature verification and public keys. See eXtended Merkle Signature Scheme.