TLS cipher suites (IANA registry)

Assigned TLS cipher suites from the IANA TLS Cipher Suites registry, one document per assigned value with its DTLS-OK flag, Recommended status (Y = recommended, N = not recommended, D = discouraged), defining references, and any registry comment.

Browse 356 documents Use with your agent

Documents

Showing 193–216 of 356 documents

Document	Version
TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8 (0xC0,0xAF) TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8 (0xC0,0xAF) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xC0,0x2C) TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 (0xC0,0x2C) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256 (0xC0,0x48) TLS_ECDHE_ECDSA_WITH_ARIA_128_CBC_SHA256 (0xC0,0x48) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 (0xC0,0x5C) TLS_ECDHE_ECDSA_WITH_ARIA_128_GCM_SHA256 (0xC0,0x5C) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384 (0xC0,0x49) TLS_ECDHE_ECDSA_WITH_ARIA_256_CBC_SHA384 (0xC0,0x49) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 (0xC0,0x5D) TLS_ECDHE_ECDSA_WITH_ARIA_256_GCM_SHA384 (0xC0,0x5D) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 (0xC0,0x72) TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_CBC_SHA256 (0xC0,0x72) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 (0xC0,0x86) TLS_ECDHE_ECDSA_WITH_CAMELLIA_128_GCM_SHA256 (0xC0,0x86) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 (0xC0,0x73) TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_CBC_SHA384 (0xC0,0x73) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 (0xC0,0x87) TLS_ECDHE_ECDSA_WITH_CAMELLIA_256_GCM_SHA384 (0xC0,0x87) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xA9) TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xA9) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked recommended for general use.	v1
TLS_ECDHE_ECDSA_WITH_NULL_SHA (0xC0,0x06) TLS_ECDHE_ECDSA_WITH_NULL_SHA (0xC0,0x06) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked discouraged for general use.	v1
TLS_ECDHE_ECDSA_WITH_RC4_128_SHA (0xC0,0x07) TLS_ECDHE_ECDSA_WITH_RC4_128_SHA (0xC0,0x07) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked discouraged for general use.	v1
TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA (0xC0,0x34) TLS_ECDHE_PSK_WITH_3DES_EDE_CBC_SHA (0xC0,0x34) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA (0xC0,0x35) TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA (0xC0,0x35) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256 (0xC0,0x37) TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256 (0xC0,0x37) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256 (0xD0,0x03) TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256 (0xD0,0x03) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256 (0xD0,0x05) TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256 (0xD0,0x05) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256 (0xD0,0x01) TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256 (0xD0,0x01) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA (0xC0,0x36) TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA (0xC0,0x36) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384 (0xC0,0x38) TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384 (0xC0,0x38) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384 (0xD0,0x02) TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384 (0xD0,0x02) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked recommended for general use.	v1
TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256 (0xC0,0x70) TLS_ECDHE_PSK_WITH_ARIA_128_CBC_SHA256 (0xC0,0x70) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1
TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384 (0xC0,0x71) TLS_ECDHE_PSK_WITH_ARIA_256_CBC_SHA384 (0xC0,0x71) is an assigned cipher suite in the IANA TLS Cipher Suites registry, marked not recommended for general use.	v1

Source, review, and usage

Published on Koskamo by: Koskamo
Version: 357
Documents: 356 documents
Reviewed: 2026-10-05
Last approved change: 2026-10-04
Agent lookups: 0 in the last 90 days
Reuse: IANA TLS Cipher Suites registry (iana.org/assignments/tls-parameters); registry data reproduced verbatim with references
Review status: Published by Koskamo; proposed revisions require Koskamo approval

Original sources are linked on each document. Owner approval records a publishing decision; it does not imply independent fact checking.

Use this dataset from an agent

Agents can query it without an account. POST to /api/v1/retrieve, or connect an MCP client and call koskamo_retrieve with dataset: "tls-cipher-suites".

Set up your agent Read documents as JSON

The JSON endpoint returns document text and source links in pages. Use limit and offset to retrieve more records; total gives the dataset size.

retrieve request

curl --fail-with-body 'https://koskamo.com/api/v1/retrieve' -H 'Content-Type: application/json' --data-raw '{"query":"tls-cipher-suites","dataset":"tls-cipher-suites","top_k":3}'

Change history

Every change that reached this dataset. Proposals from contributors land only after Koskamo approves them.

Published by Koskamo2026-10-04
TLS_ECDHE_PSK_WITH_AES_128_CCM_SHA256 (0xD0,0x05) · v1
Published by Koskamo2026-10-04
TLS_ECDHE_PSK_WITH_AES_128_CCM_8_SHA256 (0xD0,0x03) · v1
Published by Koskamo2026-10-04
TLS_ECDHE_PSK_WITH_AES_256_GCM_SHA384 (0xD0,0x02) · v1
Published by Koskamo2026-10-04
TLS_ECDHE_PSK_WITH_AES_128_GCM_SHA256 (0xD0,0x01) · v1
Published by Koskamo2026-10-04
TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xAE) · v1
Published by Koskamo2026-10-04
TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xAD) · v1
Published by Koskamo2026-10-04
TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xAC) · v1
Published by Koskamo2026-10-04
TLS_PSK_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xAB) · v1
Published by Koskamo2026-10-04
TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xAA) · v1
Published by Koskamo2026-10-04
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 (0xCC,0xA9) · v1