Allow ADH to be used but not present in the default cipher

list.

Allow CERTIFICATE to be used in PEM headers for PKCS#7 structures:
some CAs do this.

CHANGES

@@ -4,6 +4,16 @@
 
  Changes between 0.9.4 and 0.9.5  [xx XXX 2000]
 
+  *) Allow the string CERTIFICATE to be tolerated in PKCS#7 structures.
+     Some CAs (e.g. Verisign) distribute certificates in this form.
+     [Steve Henson]
+
+  *) Remove the SSL_ALLOW_ADH compile option and set the default cipher
+     list to exclude them. This means that no special compilation option
+     is needed to use anonymous DH: it just needs to be included in the
+     cipher list.
+     [Steve Henson]
+
   *) Change the EVP_MD_CTX_type macro so its meaning consistent with
      EVP_MD_type. The old functionality is available in a new macro called
      EVP_MD_md(). Change code that uses it and update docs.

crypto/pem/pem_lib.c

@@ -217,6 +217,10 @@ static int check_pem(const char *nm, const char *name)
 	if(!strcmp(nm,PEM_STRING_X509_OLD) &&
 		!strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;
 
+	/* Some CAs use PKCS#7 with CERTIFICATE headers */
+	if(!strcmp(nm, PEM_STRING_X509) &&
+		!strcmp(name, PEM_STRING_PKCS7)) return 1;
+
 	return 0;
 }
 

doc/apps/ciphers.pod

@@ -101,7 +101,8 @@ The following is a list of all permitted cipher strings and their meanings.
 =item B<DEFAULT>
 
 the default cipher list. This is determined at compile time and is normally
-B<TBA>. This must be the first cipher string specified.
+B<ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH>. This must be the first cipher string
+specified.
 
 =item B<ALL>
 
@@ -143,7 +144,7 @@ included.
 
 the cipher suites offering no authentication. This is currently the anonymous
 DH algorithms. These cipher suites are vulnerable to a "man in the middle"
-attack and so there use is normally discouraged.
+attack and so their use is normally discouraged.
 
 =item B<kRSA>, B<RSA>
 

doc/apps/pkcs7.pod

@@ -71,6 +71,18 @@ Output all certificates in a file:
 
  openssl pkcs7 -in file.pem -print_certs -out certs.pem
 
+=head1 NOTES
+
+The PEM PKCS#7 format uses the header and footer lines:
+
+ -----BEGIN PKCS7-----
+ -----END PKCS7-----
+
+For compatability with some CAs it will also accept:
+
+ -----BEGIN CERTIFICATE-----
+ -----END CERTIFICATE-----
+
 =head1 RESTRICTIONS
 
 There is no option to print out all the fields of a PKCS#7 file.

ssl/ssl.h

@@ -134,12 +134,7 @@ extern "C" {
 
 /* 'DEFAULT' at the start of the cipher list insert the following string
  * in addition to this being the default cipher string */
-#ifndef NO_RSA
 #define SSL_DEFAULT_CIPHER_LIST	"ALL:!ADH:RC4+RSA:+SSLv2:@STRENGTH"
-#else
-#define SSL_ALLOW_ADH
-#define SSL_DEFAULT_CIPHER_LIST	"ALL:ADH+3DES:ADH+RC4:ADH+DES:@STRENGTH"
-#endif
 
 /* Used in SSL_set_shutdown()/SSL_get_shutdown(); */
 #define SSL_SENT_SHUTDOWN	1

ssl/ssl_lib.c

@@ -1367,10 +1367,8 @@ void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher)
 		emask|=SSL_aDSS;
 		}
 
-#ifdef SSL_ALLOW_ADH
 	mask|=SSL_aNULL;
 	emask|=SSL_aNULL;
-#endif
 
 	c->mask=mask;
 	c->export_mask=emask;