Internet Assigned Numbers Authority • Domains • Protocols • Numbers • About Trusted Execution Environment Provisioning (TEEP) Created 2026-03-19 Last Updated 2026-03-19 Available Formats [IMG] XML [IMG] HTML [IMG] Plain text Registries Included Below • TEEP Message Types • TEEP data-item-requested Bits • TEEP Error Codes • TEEP CBOR Labels • TEEP Freshness Mechanisms TEEP Message Types Expert(s) Unassigned Reference [RFC-ietf-teep-protocol-26] Available Formats [IMG] CSV Range Registration Procedures 0-23 Standards Action 24-255 Specification Required Value Name Reference 0 Reserved [RFC-ietf-teep-protocol-26] 1 TEEP-TYPE-query-request [RFC-ietf-teep-protocol-26] 2 TEEP-TYPE-query-response [RFC-ietf-teep-protocol-26] 3 TEEP-TYPE-update [RFC-ietf-teep-protocol-26] 4 TEEP-TYPE-success [RFC-ietf-teep-protocol-26] 5 TEEP-TYPE-error [RFC-ietf-teep-protocol-26] 6-255 Unassigned TEEP data-item-requested Bits Expert(s) Unassigned Reference [RFC-ietf-teep-protocol-26] Available Formats [IMG] CSV Range Registration Procedures 0-23 Standards Action 24-254 Specification Required 255 Private Use Bit Name Description Reference 0 attestation TAM requests attestation payload [RFC-ietf-teep-protocol-26] 1 trusted-components TAM queries installed Trusted Components [RFC-ietf-teep-protocol-26] 2 extensions TAM queries supported extensions [RFC-ietf-teep-protocol-26] 3 suit-reports TAM requests SUIT Reports [RFC-ietf-teep-protocol-26] 4-254 Unassigned [RFC-ietf-teep-protocol-26] 255 Reserved for Private Use [RFC-ietf-teep-protocol-26] TEEP Error Codes Expert(s) Unassigned Reference [RFC-ietf-teep-protocol-26] Available Formats [IMG] CSV Range Registration Procedures 0-23 Standards Action 24-255 Specification Required Value Name Description Reference 0 Reserved Reserved to prevent accidental use [RFC-ietf-teep-protocol-26] 1 ERR_PERMANENT_ERROR Incorrect or inconsistent fields [RFC-ietf-teep-protocol-26] 2 ERR_UNSUPPORTED_EXTENSION Unsupported extension in message [RFC-ietf-teep-protocol-26] 3 ERR_UNSUPPORTED_FRESHNESS_MECHANISMS Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 4 ERR_UNSUPPORTED_MSG_VERSION Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 5 ERR_UNSUPPORTED_CIPHER_SUITES Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 6 ERR_BAD_CERTIFICATE Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 7 ERR_ATTESTATION_REQUIRED Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 8 ERR_UNSUPPORTED_SUIT_REPORT Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 9 ERR_CERTIFICATE_EXPIRED Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 10 ERR_TEMPORARY_ERROR Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 11 ERR_MANIFEST_PROCESSING_FAILED Unsupported freshness mechanism [RFC-ietf-teep-protocol-26] 12-255 Unassigned TEEP CBOR Labels Expert(s) Unassigned Reference [RFC-ietf-teep-protocol-26] Available Formats [IMG] CSV Range Registration Procedures 0-255 Standards Action 256-1023 Specification Required Label Name Type Reference 0 Reserved [RFC-ietf-teep-protocol-26] 1 supported-teep-cipher-suites array [RFC-ietf-teep-protocol-26] 2 challenge bstr [RFC-ietf-teep-protocol-26] 3 versions array [RFC-ietf-teep-protocol-26] 4 supported-suit-cose-profiles array [RFC-ietf-teep-protocol-26] 5 selected-version uint [RFC-ietf-teep-protocol-26] 6 attestation-payload bstr [RFC-ietf-teep-protocol-26] 7 tc-list array [RFC-ietf-teep-protocol-26] 8 ext-list array [RFC-ietf-teep-protocol-26] 9 manifest-list array [RFC-ietf-teep-protocol-26] 10 msg text [RFC-ietf-teep-protocol-26] 11 err-msg text [RFC-ietf-teep-protocol-26] 12 attestation-payload-format text [RFC-ietf-teep-protocol-26] 13 requested-tc-list array [RFC-ietf-teep-protocol-26] 14 unneeded-manifest-list array [RFC-ietf-teep-protocol-26] 15 component-id SUIT_Component_Identifier [RFC-ietf-teep-protocol-26] 16 tc-manifest-sequence-number uint [RFC-ietf-teep-protocol-26] 17 have-binary bool [RFC-ietf-teep-protocol-26] 18 suit-reports array [RFC-ietf-teep-protocol-26] 19 token bstr [RFC-ietf-teep-protocol-26] 20 supported-freshness-mechanisms array [RFC-ietf-teep-protocol-26] 21 err-lang text [RFC-ietf-teep-protocol-26] 22 err-code uint [RFC-ietf-teep-protocol-26] 23-1023 Unassigned TEEP Freshness Mechanisms Expert(s) Unassigned Reference [RFC-ietf-teep-protocol-26] Available Formats [IMG] CSV Range Registration Procedures 0-23 Standards Action 24-255 Specification Required Value Name Reference 0 FRESHNESS_NONCE [RFC-ietf-teep-protocol-26] 1 FRESHNESS_TIMESTAMP [RFC-ietf-teep-protocol-26] 2-255 Unassigned Licensing Terms