Stop using unimplemented cipher classes.

Add comments to no longer usable ciphers.
Reviewed-by: NRich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5023)

include/openssl/ssl.h

@@ -67,14 +67,14 @@ extern "C" {
 # define SSL_TXT_NULL            "NULL"
 
 # define SSL_TXT_kRSA            "kRSA"
-# define SSL_TXT_kDHr            "kDHr"
-# define SSL_TXT_kDHd            "kDHd"
-# define SSL_TXT_kDH             "kDH"
+# define SSL_TXT_kDHr            "kDHr"/* this cipher class has been removed */
+# define SSL_TXT_kDHd            "kDHd"/* this cipher class has been removed */
+# define SSL_TXT_kDH             "kDH"/* this cipher class has been removed */
 # define SSL_TXT_kEDH            "kEDH"/* alias for kDHE */
 # define SSL_TXT_kDHE            "kDHE"
-# define SSL_TXT_kECDHr          "kECDHr"
-# define SSL_TXT_kECDHe          "kECDHe"
-# define SSL_TXT_kECDH           "kECDH"
+# define SSL_TXT_kECDHr          "kECDHr"/* this cipher class has been removed */
+# define SSL_TXT_kECDHe          "kECDHe"/* this cipher class has been removed */
+# define SSL_TXT_kECDH           "kECDH"/* this cipher class has been removed */
 # define SSL_TXT_kEECDH          "kEECDH"/* alias for kECDHE */
 # define SSL_TXT_kECDHE          "kECDHE"
 # define SSL_TXT_kPSK            "kPSK"
@@ -86,8 +86,8 @@ extern "C" {
 
 # define SSL_TXT_aRSA            "aRSA"
 # define SSL_TXT_aDSS            "aDSS"
-# define SSL_TXT_aDH             "aDH"
-# define SSL_TXT_aECDH           "aECDH"
+# define SSL_TXT_aDH             "aDH"/* this cipher class has been removed */
+# define SSL_TXT_aECDH           "aECDH"/* this cipher class has been removed */
 # define SSL_TXT_aECDSA          "aECDSA"
 # define SSL_TXT_aPSK            "aPSK"
 # define SSL_TXT_aGOST94         "aGOST94"

ssl/ssl_ciph.c

@@ -1368,10 +1368,6 @@ STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method, STACK
     ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
                           &tail);
 
-    /*
-     * ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1,
-     * &head, &tail);
-     */
     ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,
                           &tail);
     ssl_cipher_apply_rule(0, SSL_kPSK, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head,

test/recipes/80-test_ssl_old.t

@@ -396,7 +396,7 @@ sub testssl {
     subtest "Testing ciphersuites" => sub {
 
         my @exkeys = ();
-        my $ciphers = "-EXP:-PSK:-SRP:-kDH:-kECDHe";
+        my $ciphers = "-PSK:-SRP";
 
         if (!$no_dsa) {
             push @exkeys, "-s_cert", "certD.ss", "-s_key", "keyD.ss";