ccm8 support

Reviewed-by: NTim Hudson <tjh@openssl.org>

include/openssl/ssl.h

@@ -246,6 +246,7 @@ extern "C" {
 # define SSL_TXT_AES             "AES"
 # define SSL_TXT_AES_GCM         "AESGCM"
 # define SSL_TXT_AES_CCM         "AESCCM"
+# define SSL_TXT_AES_CCM_8       "AESCCM8"
 # define SSL_TXT_CAMELLIA128     "CAMELLIA128"
 # define SSL_TXT_CAMELLIA256     "CAMELLIA256"
 # define SSL_TXT_CAMELLIA        "CAMELLIA"

ssl/ssl_ciph.c

@@ -166,7 +166,9 @@
 #define SSL_ENC_AES256GCM_IDX   13
 #define SSL_ENC_AES128CCM_IDX   14
 #define SSL_ENC_AES256CCM_IDX   15
-#define SSL_ENC_NUM_IDX         16
+#define SSL_ENC_AES128CCM8_IDX  16
+#define SSL_ENC_AES256CCM8_IDX  17
+#define SSL_ENC_NUM_IDX         18
 
 /* NB: make sure indices in these tables match values above */
 
@@ -192,7 +194,9 @@ static const ssl_cipher_table ssl_cipher_table_cipher[SSL_ENC_NUM_IDX] = {
     {SSL_AES128GCM, NID_aes_128_gcm}, /* SSL_ENC_AES128GCM_IDX 12 */
     {SSL_AES256GCM, NID_aes_256_gcm}, /* SSL_ENC_AES256GCM_IDX 13 */
     {SSL_AES128CCM, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM_IDX 14 */
-    {SSL_AES256CCM, NID_aes_256_ccm} /* SSL_ENC_AES256CCM_IDX 15 */
+    {SSL_AES256CCM, NID_aes_256_ccm}, /* SSL_ENC_AES256CCM_IDX 15 */
+    {SSL_AES128CCM8, NID_aes_128_ccm}, /* SSL_ENC_AES128CCM8_IDX 16 */
+    {SSL_AES256CCM8, NID_aes_256_ccm} /* SSL_ENC_AES256CCM8_IDX 17 */
 };
 
 static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX] = {
@@ -359,14 +363,16 @@ static const SSL_CIPHER cipher_aliases[] = {
     {0, SSL_TXT_IDEA, 0, 0, 0, SSL_IDEA, 0, 0, 0, 0, 0, 0},
     {0, SSL_TXT_SEED, 0, 0, 0, SSL_SEED, 0, 0, 0, 0, 0, 0},
     {0, SSL_TXT_eNULL, 0, 0, 0, SSL_eNULL, 0, 0, 0, 0, 0, 0},
-    {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM, 0,
+    {0, SSL_TXT_AES128, 0, 0, 0, SSL_AES128 | SSL_AES128GCM | SSL_AES128CCM | SSL_AES128CCM8, 0,
      0, 0, 0, 0, 0},
-    {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM, 0,
+    {0, SSL_TXT_AES256, 0, 0, 0, SSL_AES256 | SSL_AES256GCM | SSL_AES256CCM | SSL_AES256CCM8, 0,
      0, 0, 0, 0, 0},
     {0, SSL_TXT_AES, 0, 0, 0, SSL_AES, 0, 0, 0, 0, 0, 0},
     {0, SSL_TXT_AES_GCM, 0, 0, 0, SSL_AES128GCM | SSL_AES256GCM, 0, 0, 0, 0,
      0, 0},
-    {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM, 0, 0, 0, 0,
+    {0, SSL_TXT_AES_CCM, 0, 0, 0, SSL_AES128CCM | SSL_AES256CCM | SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
+     0, 0},
+    {0, SSL_TXT_AES_CCM_8, 0, 0, 0, SSL_AES128CCM8 | SSL_AES256CCM8, 0, 0, 0, 0,
      0, 0},
     {0, SSL_TXT_CAMELLIA128, 0, 0, 0, SSL_CAMELLIA128, 0, 0, 0, 0, 0, 0},
     {0, SSL_TXT_CAMELLIA256, 0, 0, 0, SSL_CAMELLIA256, 0, 0, 0, 0, 0, 0},
@@ -1721,6 +1727,12 @@ char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len)
     case SSL_AES256CCM:
         enc = "AESCCM(256)";
         break;
+    case SSL_AES128CCM8:
+        enc = "AESCCM8(128)";
+        break;
+    case SSL_AES256CCM8:
+        enc = "AESCCM8(256)";
+        break;
     case SSL_CAMELLIA128:
         enc = "Camellia(128)";
         break;

ssl/ssl_locl.h

@@ -361,8 +361,10 @@
 # define SSL_AES256GCM           0x00002000L
 # define SSL_AES128CCM           0x00004000L
 # define SSL_AES256CCM           0x00008000L
+# define SSL_AES128CCM8          0x00010000L
+# define SSL_AES256CCM8          0x00020000L
 
-# define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM|SSL_AES128CCM|SSL_AES256CCM)
+# define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM|SSL_AES128CCM|SSL_AES256CCM|SSL_AES128CCM8|SSL_AES256CCM8)
 # define SSL_CAMELLIA            (SSL_CAMELLIA128|SSL_CAMELLIA256)
 
 /* Bits for algorithm_mac (symmetric authentication) */

ssl/t1_enc.c

@@ -509,7 +509,11 @@ int tls1_change_cipher_state(SSL *s, int which)
             goto err2;
         }
     } else if (EVP_CIPHER_mode(c) == EVP_CIPH_CCM_MODE) {
-        int taglen = 16;
+        int taglen;
+        if (s->s3->tmp.new_cipher->algorithm_enc & (SSL_AES128CCM8|SSL_AES256CCM8))
+            taglen = 8;
+        else
+            taglen = 16;
         if (!EVP_CipherInit_ex(dd, c, NULL, NULL, NULL, (which & SSL3_CC_WRITE))
             || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_IVLEN, 12, NULL)
             || !EVP_CIPHER_CTX_ctrl(dd, EVP_CTRL_AEAD_SET_TAG, taglen, NULL)