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AWS AmazonCloudFront documentation change

Service: AmazonCloudFront · 2025-11-01 · Documentation medium

File: AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-viewer-protocols-ciphers.md

Summary

Clarified quantum-safe key exchange support (TLS 1.3 only) and updated elliptic curve naming conventions.

Security assessment

Documents quantum-safe cryptographic features, which are security-related enhancements. No evidence of addressing a specific vulnerability.

Diff

diff --git a/AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-viewer-protocols-ciphers.md b/AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-viewer-protocols-ciphers.md
index 1f76475cb..444ea04d3 100644
--- a//AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-viewer-protocols-ciphers.md
+++ b//AmazonCloudFront/latest/DeveloperGuide/secure-connections-supported-viewer-protocols-ciphers.md
@@ -63 +63 @@ OpenSSL and [s2n](https://github.com/awslabs/s2n) use different names for cipher
-For ciphers with elliptic curve key exchange algorithms, CloudFront supports the following elliptic curves:
+CloudFront supports both classical and quantum-safe key exchanges. For classical key exchanges using elliptic curves, CloudFront supports the following:
@@ -65 +65 @@ For ciphers with elliptic curve key exchange algorithms, CloudFront supports the
-  * prime256v1
+  * `prime256v1`
@@ -67 +67 @@ For ciphers with elliptic curve key exchange algorithms, CloudFront supports the
-  * X25519
+  * `X25519`
@@ -69 +69 @@ For ciphers with elliptic curve key exchange algorithms, CloudFront supports the
-  * secp384r1
+  * `secp384r1`
@@ -74 +74 @@ For ciphers with elliptic curve key exchange algorithms, CloudFront supports the
-CloudFront supports the following post-quantum (PQ) key exchange algorithms:
+For quantum-safe key exchanges, CloudFront supports the following:
@@ -76 +76 @@ CloudFront supports the following post-quantum (PQ) key exchange algorithms:
-  * X25519MLKEM768
+  * `X25519MLKEM768`
@@ -78 +78,5 @@ CloudFront supports the following post-quantum (PQ) key exchange algorithms:
-  * SecP256r1MLKEM768
+  * `SecP256r1MLKEM768`
+
+###### Note
+
+Quantum-safe key exchanges are only supported with TLS 1.3. TLS 1.2 and earlier versions do not support quantum-safe key exchanges.