RT1941: c_rehash.pod is missing

[openssl.git] / doc / ssl / SSL_CTX_set_tmp_dh_callback.pod

diff --git a/doc/ssl/SSL_CTX_set_tmp_dh_callback.pod b/doc/ssl/SSL_CTX_set_tmp_dh_callback.pod
index 707d62c12c6e13658c02bf58fe32ef9192986463..7a27eef50b173dbeba26a732a501530ffcb621e9 100644 (file)
--- a/doc/ssl/SSL_CTX_set_tmp_dh_callback.pod
+++ b/doc/ssl/SSL_CTX_set_tmp_dh_callback.pod
@@ -12,12 +12,10 @@ SSL_CTX_set_tmp_dh_callback, SSL_CTX_set_tmp_dh, SSL_set_tmp_dh_callback, SSL_se
             DH *(*tmp_dh_callback)(SSL *ssl, int is_export, int keylength));
  long SSL_CTX_set_tmp_dh(SSL_CTX *ctx, DH *dh);
 
- void SSL_set_tmp_dh_callback(SSL_CTX *ctx,
+ void SSL_set_tmp_dh_callback(SSL *ctx,
             DH *(*tmp_dh_callback)(SSL *ssl, int is_export, int keylength));
  long SSL_set_tmp_dh(SSL *ssl, DH *dh)
 
- DH *(*tmp_dh_callback)(SSL *ssl, int is_export, int keylength));
-
 =head1 DESCRIPTION
 
 SSL_CTX_set_tmp_dh_callback() sets the callback function for B<ctx> to be
@@ -29,7 +27,7 @@ The key is inherited by all B<ssl> objects created from B<ctx>.
 
 SSL_set_tmp_dh_callback() sets the callback only for B<ssl>.
 
-SSL_set_tmp_dh() sets the paramters only for B<ssl>.
+SSL_set_tmp_dh() sets the parameters only for B<ssl>.
 
 These functions apply to SSL/TLS servers only.
 
@@ -50,12 +48,13 @@ even if he gets hold of the normal (certified) key, as this key was
 only used for signing.
 
 In order to perform a DH key exchange the server must use a DH group
-(DH parameters) and generate a DH key. The server will always generate a new
-DH key during the negotiation, when the DH parameters are supplied via
-callback and/or when the SSL_OP_SINGLE_DH_USE option of
-L<SSL_CTX_set_options(3)|SSL_CTX_set_options(3)> is set. It will
-immediatly create a DH key, when DH parameters are supplied via
-SSL_CTX_set_tmp_dh() and SSL_OP_SINGLE_DH_USE is not set. In this case,
+(DH parameters) and generate a DH key.
+The server will always generate a new DH key during the negotiation
+if either the DH parameters are supplied via callback or the
+SSL_OP_SINGLE_DH_USE option of SSL_CTX_set_options(3) is set (or both).
+It will  immediately create a DH key if DH parameters are supplied via
+SSL_CTX_set_tmp_dh() and SSL_OP_SINGLE_DH_USE is not set.
+In this case,
 it may happen that a key is generated on initialization without later
 being needed, while on the other hand the computer time during the
 negotiation is being saved.
@@ -74,14 +73,14 @@ should not generate the parameters on the fly but supply the parameters.
 DH parameters can be reused, as the actual key is newly generated during
 the negotiation. The risk in reusing DH parameters is that an attacker
 may specialize on a very often used DH group. Applications should therefore
-generate their own DH paramaters during the installation process using the
+generate their own DH parameters during the installation process using the
 openssl L<dhparam(1)|dhparam(1)> application. In order to reduce the computer
 time needed for this generation, it is possible to use DSA parameters
 instead (see L<dhparam(1)|dhparam(1)>), but in this case SSL_OP_SINGLE_DH_USE
 is mandatory.
 
 Application authors may compile in DH parameters. Files dh512.pem,
-dh1024.pem, dh2048.pem, and dh4096 in the 'apps' directory of current
+dh1024.pem, dh2048.pem, and dh4096.pem in the 'apps' directory of current
 version of the OpenSSL distribution contain the 'SKIP' DH parameters,
 which use safe primes and were generated verifiably pseudo-randomly.
 These files can be converted into C code using the B<-C> option of the
@@ -141,7 +140,7 @@ partly left out.)
       dh_tmp = dh_512;
       break;
     case 1024:
-      if (!dh_1024) 
+      if (!dh_1024)
         dh_1024 = get_dh1024();
       dh_tmp = dh_1024;
       break;