Remove export static DH ciphersuites

Remove support for the two export grade static DH ciphersuites. These two
ciphersuites were newly added (along with a number of other static DH
ciphersuites) to 1.0.2. However the two export ones have *never* worked
since they were introduced. It seems strange in any case to be adding new
export ciphersuites, and given "logjam" it also does not seem correct to
fix them.
Reviewed-by: NRichard Levitte <levitte@openssl.org>

CHANGES

@@ -9,6 +9,14 @@
      not well tested). Therefore the OPENSSL_NO_TLSEXT option has been removed.
      [Matt Caswell]
 
+  *) Removed support for the two export grade static DH ciphersuites
+     EXP-DH-RSA-DES-CBC-SHA and EXP-DH-DSS-DES-CBC-SHA. These two ciphersuites
+     were newly added (along with a number of other static DH ciphersuites) to
+     1.0.2. However the two export ones have *never* worked since they were
+     introduced. It seems strange in any case to be adding new export
+     ciphersuites, and given "logjam" it also does not seem correct to fix them.
+     [Matt Caswell]
+
   *) Version negotiation has been rewritten. In particular SSLv23_method(),
      SSLv23_client_method() and SSLv23_server_method() have been deprecated,
      and turned into macros which simply call the new preferred function names

doc/apps/ciphers.pod

@@ -365,10 +365,8 @@ e.g. DES-CBC3-SHA. In these cases, RSA authentication is used.
  SSL_RSA_WITH_DES_CBC_SHA                DES-CBC-SHA
  SSL_RSA_WITH_3DES_EDE_CBC_SHA           DES-CBC3-SHA
 
- SSL_DH_DSS_EXPORT_WITH_DES40_CBC_SHA    EXP-DH-DSS-DES-CBC-SHA
  SSL_DH_DSS_WITH_DES_CBC_SHA             DH-DSS-DES-CBC-SHA
  SSL_DH_DSS_WITH_3DES_EDE_CBC_SHA        DH-DSS-DES-CBC3-SHA
- SSL_DH_RSA_EXPORT_WITH_DES40_CBC_SHA    EXP-DH-RSA-DES-CBC-SHA
  SSL_DH_RSA_WITH_DES_CBC_SHA             DH-RSA-DES-CBC-SHA
  SSL_DH_RSA_WITH_3DES_EDE_CBC_SHA        DH-RSA-DES-CBC3-SHA
  SSL_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA   EXP-DHE-DSS-DES-CBC-SHA

ssl/s3_lib.c

@@ -330,7 +330,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
 /* The DH ciphers */
 /* Cipher 0B */
     {
-     1,
+     0,
      SSL3_TXT_DH_DSS_DES_40_CBC_SHA,
      SSL3_CK_DH_DSS_DES_40_CBC_SHA,
      SSL_kDHd,
@@ -378,7 +378,7 @@ OPENSSL_GLOBAL const SSL_CIPHER ssl3_ciphers[] = {
 
 /* Cipher 0E */
     {
-     1,
+     0,
      SSL3_TXT_DH_RSA_DES_40_CBC_SHA,
      SSL3_CK_DH_RSA_DES_40_CBC_SHA,
      SSL_kDHr,