6.0.0-dev0

Changed

• The set_jwt_issuer governance action has been updated, and no longer accepts key_filter or key_policy arguments (#6450).
• Nodes started in Join mode will shut down if they receive an unrecoverable condition such as StartupSeqnoIsOld or InvalidQuote when attempting to join (#6471, #6489).
• In configuration, attestation.snp_endorsements_servers can specify a max_retries_count. If the count has been exhausted without success for all configured servers, the node will shut down (#6478).
• When deciding which nodes are allowed to join, only UVM roots of trust defined in public:ccf.gov.nodes.snp.uvm_endorsements are considered (#6489).

Removed

• SGX Platform support.

Added

• Provided API for getting COSE signatures and Merkle proofs (#6477).
• Exposed COSE signature in historical API via TxReceiptImpl.
• Introduced ccf::describe_merkle_proof_v1(receipt) for Merkle proof construction in CBOR format.
• Added COSE signatures over the Merkle root to the KV (#6449).
• Signing is done with service key (different from raw signatures, which remain unchanged and are still signed by the node key).
• New signature reside in public:ccf.internal.cose_signatures.