Switch CCM and GCM in default suite order
The upcoming BCP document recommends GCM as the default.
diff --git a/library/ssl_ciphersuites.c b/library/ssl_ciphersuites.c
index 82f0a38..2db5314 100644
--- a/library/ssl_ciphersuites.c
+++ b/library/ssl_ciphersuites.c
@@ -51,18 +51,18 @@
* Forward-secure non-PSK > forward-secure PSK > other non-PSK > other PSK
* 2. By key length and cipher:
* AES-256 > Camellia-256 > AES-128 > Camellia-128 > 3DES
- * 3. By cipher mode when relevant CCM > GCM > CBC > CCM_8
+ * 3. By cipher mode when relevant GCM > CCM > CBC > CCM_8
* 4. By hash function used when relevant
* 5. By key exchange/auth again: EC > non-EC
*/
static const int ciphersuite_preference[] =
{
/* All AES-256 ephemeral suites */
- TLS_ECDHE_ECDSA_WITH_AES_256_CCM,
- TLS_DHE_RSA_WITH_AES_256_CCM,
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
TLS_DHE_RSA_WITH_AES_256_GCM_SHA384,
+ TLS_ECDHE_ECDSA_WITH_AES_256_CCM,
+ TLS_DHE_RSA_WITH_AES_256_CCM,
TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384,
TLS_DHE_RSA_WITH_AES_256_CBC_SHA256,
@@ -82,11 +82,11 @@
TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA,
/* All AES-128 ephemeral suites */
- TLS_ECDHE_ECDSA_WITH_AES_128_CCM,
- TLS_DHE_RSA_WITH_AES_128_CCM,
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
TLS_DHE_RSA_WITH_AES_128_GCM_SHA256,
+ TLS_ECDHE_ECDSA_WITH_AES_128_CCM,
+ TLS_DHE_RSA_WITH_AES_128_CCM,
TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,
TLS_DHE_RSA_WITH_AES_128_CBC_SHA256,
@@ -111,8 +111,8 @@
TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA,
/* The PSK ephemeral suites */
- TLS_DHE_PSK_WITH_AES_256_CCM,
TLS_DHE_PSK_WITH_AES_256_GCM_SHA384,
+ TLS_DHE_PSK_WITH_AES_256_CCM,
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_DHE_PSK_WITH_AES_256_CBC_SHA384,
TLS_ECDHE_PSK_WITH_AES_256_CBC_SHA,
@@ -122,8 +122,8 @@
TLS_DHE_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_DHE_PSK_WITH_AES_256_CCM_8,
- TLS_DHE_PSK_WITH_AES_128_CCM,
TLS_DHE_PSK_WITH_AES_128_GCM_SHA256,
+ TLS_DHE_PSK_WITH_AES_128_CCM,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_DHE_PSK_WITH_AES_128_CBC_SHA256,
TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA,
@@ -137,8 +137,8 @@
TLS_DHE_PSK_WITH_3DES_EDE_CBC_SHA,
/* All AES-256 suites */
- TLS_RSA_WITH_AES_256_CCM,
TLS_RSA_WITH_AES_256_GCM_SHA384,
+ TLS_RSA_WITH_AES_256_CCM,
TLS_RSA_WITH_AES_256_CBC_SHA256,
TLS_RSA_WITH_AES_256_CBC_SHA,
TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384,
@@ -159,8 +159,8 @@
TLS_ECDH_ECDSA_WITH_CAMELLIA_256_CBC_SHA384,
/* All AES-128 suites */
- TLS_RSA_WITH_AES_128_CCM,
TLS_RSA_WITH_AES_128_GCM_SHA256,
+ TLS_RSA_WITH_AES_128_CCM,
TLS_RSA_WITH_AES_128_CBC_SHA256,
TLS_RSA_WITH_AES_128_CBC_SHA,
TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256,
@@ -201,16 +201,16 @@
TLS_RSA_PSK_WITH_3DES_EDE_CBC_SHA,
/* The PSK suites */
- TLS_PSK_WITH_AES_256_CCM,
TLS_PSK_WITH_AES_256_GCM_SHA384,
+ TLS_PSK_WITH_AES_256_CCM,
TLS_PSK_WITH_AES_256_CBC_SHA384,
TLS_PSK_WITH_AES_256_CBC_SHA,
TLS_PSK_WITH_CAMELLIA_256_GCM_SHA384,
TLS_PSK_WITH_CAMELLIA_256_CBC_SHA384,
TLS_PSK_WITH_AES_256_CCM_8,
- TLS_PSK_WITH_AES_128_CCM,
TLS_PSK_WITH_AES_128_GCM_SHA256,
+ TLS_PSK_WITH_AES_128_CCM,
TLS_PSK_WITH_AES_128_CBC_SHA256,
TLS_PSK_WITH_AES_128_CBC_SHA,
TLS_PSK_WITH_CAMELLIA_128_GCM_SHA256,