Transport Layer Security (TLS) Extensions

Created
2005-11-15
Last Updated
2014-08-12
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Registries included below

ExtensionType Values

Registration Procedure(s)
IETF Consensus
Reference
[RFC5246]
Available Formats

CSV
Value Extension name Reference
0 server_name [RFC6066]
1 max_fragment_length [RFC6066]
2 client_certificate_url [RFC6066]
3 trusted_ca_keys [RFC6066]
4 truncated_hmac [RFC6066]
5 status_request [RFC6066]
6 user_mapping [RFC4681]
7 client_authz [RFC5878]
8 server_authz [RFC5878]
9 cert_type [RFC6091]
10 elliptic_curves [RFC4492]
11 ec_point_formats [RFC4492]
12 srp [RFC5054]
13 signature_algorithms [RFC5246]
14 use_srtp [RFC5764]
15 heartbeat [RFC6520]
16 application_layer_protocol_negotiation [RFC7301]
17 status_request_v2 [RFC6961]
18 signed_certificate_timestamp [RFC6962]
19 client_certificate_type [RFC7250]
20 server_certificate_type [RFC7250]
21 padding (TEMPORARY - expires 2015-03-12) [draft-agl-tls-padding]
22 encrypt_then_mac [RFC-ietf-tls-encrypt-then-mac-03]
23-34 Unassigned
35 SessionTicket TLS [RFC4507]
36-65280 Unassigned
65281 renegotiation_info [RFC5746]
65282-65535 Unassigned

TLS Certificate Types

Reference
[RFC6091]
Available Formats

CSV
Range Registration Procedures
0-223 RFC Required
224-255 Reserved for Private Use
Value Description Reference
0 X.509 [RFC6091]
1 OpenPGP [RFC6091]
2 Raw Public Key [RFC7250]
3-223 Unassigned
224-255 Reserved for Private Use [RFC6091]

TLS Certificate Status Types

Registration Procedure(s)
IETF Review
Reference
[RFC6961]
Available Formats

CSV
Value Description Reference
0 Reserved [RFC6961]
1 ocsp [RFC6066][RFC6961]
2 ocsp_multi [RFC6961]
3-255 Unassigned

Application-Layer Protocol Negotiation (ALPN) Protocol IDs

Registration Procedure(s)
Expert Review
Expert(s)
Joe Salowey
Reference
[RFC7301]
Available Formats

CSV
Protocol Identification Sequence Reference
HTTP/1.1 0x68 0x74 0x74 0x70 0x2f 0x31 0x2e 0x31 ("http/1.1") [RFC7230]
SPDY/1 0x73 0x70 0x64 0x79 0x2f 0x31 ("spdy/1") [http://dev.chromium.org/spdy/spdy-protocol/spdy-protocol-draft1]
SPDY/2 0x73 0x70 0x64 0x79 0x2f 0x32 ("spdy/2") [http://dev.chromium.org/spdy/spdy-protocol/spdy-protocol-draft2]
SPDY/3 0x73 0x70 0x64 0x79 0x2f 0x33 ("spdy/3") [http://dev.chromium.org/spdy/spdy-protocol/spdy-protocol-draft3]