Implement draft-ietf-tls-chacha20-poly1305-04.
Only ECDHE-based ciphers are implemented. To ease the transition, the
pre-standard cipher shares a name with the standard one. The cipher rule parser
is hacked up to match the name to both ciphers. From the perspective of the
cipher suite configuration language, there is only one cipher.
This does mean it is impossible to disable the old variant without a code
change, but this situation will be very short-lived, so this is fine.
Also take this opportunity to make the CK and TXT names align with convention.
Change-Id: Ie819819c55bce8ff58e533f1dbc8bef5af955c21
Reviewed-on: https://boringssl-review.googlesource.com/6686
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 58a32bb..bce981c 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -1044,7 +1044,9 @@
OPENSSL_EXPORT int SSL_CIPHER_is_AES256CBC(const SSL_CIPHER *cipher);
/* SSL_CIPHER_is_CHACHA20POLY1305 returns one if |cipher| uses
- * CHACHA20_POLY1305. */
+ * CHACHA20_POLY1305. Note this includes both the
+ * draft-ietf-tls-chacha20-poly1305-04 and draft-agl-tls-chacha20poly1305-04
+ * versions. */
OPENSSL_EXPORT int SSL_CIPHER_is_CHACHA20POLY1305(const SSL_CIPHER *cipher);
/* SSL_CIPHER_is_NULL returns one if |cipher| does not encrypt. */
