Add CHACHA20 alias for ciphers.

Update ciphers documentation as well (based on -04 rev of ID).
Signed-off-by: NKurt Roeckx <kurt@roeckx.be>
Reviewed-by: NRich Salz <rsalz@openssl.org>

RT: #4206, GH: #642

doc/apps/ciphers.pod

@@ -280,6 +280,10 @@ while B<AESCCM8> only references 8 octet ICV.
 cipher suites using 128 bit CAMELLIA, 256 bit CAMELLIA or either 128 or 256 bit
 CAMELLIA.
 
+=item B<CHACHA20>
+
+cipher suites using ChaCha20.
+
 =item B<3DES>
 
 cipher suites using triple DES.
@@ -657,6 +661,16 @@ Note: these ciphers can also be used in SSL v3.
  DHE_PSK_WITH_AES_128_CCM_8                DHE-PSK-AES128-CCM8
  DHE_PSK_WITH_AES_256_CCM_8                DHE-PSK-AES256-CCM8
 
+=head2 ChaCha20-Poly1305 cipher suites from draft-ietf-tls-chacha20-poly1305-04, extending TLS v1.2
+
+ TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256      ECDHE-RSA-CHACHA20-POLY1305
+ TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256    ECDHE-ECDSA-CHACHA20-POLY1305
+ TLS_DHE_RSA_WITH_CHACHA20_POLY1305_SHA256        DHE-RSA-CHACHA20-POLY1305
+ TLS_PSK_WITH_CHACHA20_POLY1305_SHA256            PSK-CHACHA20-POLY1305
+ TLS_ECDHE_PSK_WITH_CHACHA20_POLY1305_SHA256      ECDHE-PSK-CHACHA20-POLY1305
+ TLS_DHE_PSK_WITH_CHACHA20_POLY1305_SHA256        DHE-PSK-CHACHA20-POLY1305
+ TLS_RSA_PSK_WITH_CHACHA20_POLY1305_SHA256        RSA-PSK-CHACHA20-POLY1305
+
 =head1 NOTES
 
 Some compiled versions of OpenSSL may not include all the ciphers

ssl/ssl_ciph.c

@@ -375,8 +375,8 @@ static const SSL_CIPHER cipher_aliases[] = {
      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},
-    {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA128 | SSL_CAMELLIA256, 0, 0, 0,
-     0, 0, 0},
+    {0, SSL_TXT_CAMELLIA, 0, 0, 0, SSL_CAMELLIA, 0, 0, 0, 0, 0, 0},
+    {0, SSL_TXT_CHACHA20, 0, 0, 0, SSL_CHACHA20, 0, 0, 0, 0, 0, 0 },
 
     /* MAC aliases */
     {0, SSL_TXT_MD5, 0, 0, 0, 0, SSL_MD5, 0, 0, 0, 0, 0},

ssl/ssl_locl.h

@@ -364,6 +364,7 @@
 
 # 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)
+# define SSL_CHACHA20            (SSL_CHACHA20POLY1305)
 
 /* Bits for algorithm_mac (symmetric authentication) */