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Diffstat (limited to 'secure/lib/libcrypto/man/SSL_CTX_new.3')
| -rw-r--r-- | secure/lib/libcrypto/man/SSL_CTX_new.3 | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/SSL_CTX_new.3 b/secure/lib/libcrypto/man/SSL_CTX_new.3 new file mode 100644 index 0000000..6b135cf --- /dev/null +++ b/secure/lib/libcrypto/man/SSL_CTX_new.3 @@ -0,0 +1,215 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:20:06 2002 +.\" +.\" Standard preamble: +.\" ====================================================================== +.de Sh \" Subsection heading +.br +.if t .Sp +.ne 5 +.PP +\fB\\$1\fR +.PP +.. +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Ip \" List item +.br +.ie \\n(.$>=3 .ne \\$3 +.el .ne 3 +.IP "\\$1" \\$2 +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R + +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. | will give a +.\" real vertical bar. \*(C+ will give a nicer C++. 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The methods exist +in a generic type (for client and server use), a server only type, and a +client only type. \fBmethod\fR can be of the following types: +.Ip "SSLv2_method(void), SSLv2_server_method(void), SSLv2_client_method(void)" 4 +.IX Item "SSLv2_method(void), SSLv2_server_method(void), SSLv2_client_method(void)" +A \s-1TLS/SSL\s0 connection established with these methods will only understand +the SSLv2 protocol. A client will send out SSLv2 client hello messages +and will also indicate that it only understand SSLv2. A server will only +understand SSLv2 client hello messages. +.Ip "SSLv3_method(void), SSLv3_server_method(void), SSLv3_client_method(void)" 4 +.IX Item "SSLv3_method(void), SSLv3_server_method(void), SSLv3_client_method(void)" +A \s-1TLS/SSL\s0 connection established with these methods will only understand the +SSLv3 protocol. A client will send out SSLv3 client hello messages +and will indicate that it only understands SSLv3. A server will only understand +SSLv3 client hello messages. This especially means, that it will +not understand SSLv2 client hello messages which are widely used for +compatibility reasons, see SSLv23_*\fI_method()\fR. +.Ip "TLSv1_method(void), TLSv1_server_method(void), TLSv1_client_method(void)" 4 +.IX Item "TLSv1_method(void), TLSv1_server_method(void), TLSv1_client_method(void)" +A \s-1TLS/SSL\s0 connection established with these methods will only understand the +TLSv1 protocol. A client will send out TLSv1 client hello messages +and will indicate that it only understands TLSv1. A server will only understand +TLSv1 client hello messages. This especially means, that it will +not understand SSLv2 client hello messages which are widely used for +compatibility reasons, see SSLv23_*\fI_method()\fR. It will also not understand +SSLv3 client hello messages. +.Ip "SSLv23_method(void), SSLv23_server_method(void), SSLv23_client_method(void)" 4 +.IX Item "SSLv23_method(void), SSLv23_server_method(void), SSLv23_client_method(void)" +A \s-1TLS/SSL\s0 connection established with these methods will understand the SSLv2, +SSLv3, and TLSv1 protocol. A client will send out SSLv2 client hello messages +and will indicate that it also understands SSLv3 and TLSv1. A server will +understand SSLv2, SSLv3, and TLSv1 client hello messages. This is the best +choice when compatibility is a concern. +.PP +The list of protocols available can later be limited using the SSL_OP_NO_SSLv2, +SSL_OP_NO_SSLv3, SSL_OP_NO_TLSv1 options of the \fB\f(BISSL_CTX_set_options()\fB\fR or +\&\fB\f(BISSL_set_options()\fB\fR functions. Using these options it is possible to choose +e.g. \fISSLv23_server_method()\fR and be able to negotiate with all possible +clients, but to only allow newer protocols like SSLv3 or TLSv1. +.PP +\&\fISSL_CTX_new()\fR initializes the list of ciphers, the session cache setting, +the callbacks, the keys and certificates, and the options to its default +values. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +The following return values can occur: +.Ip "\s-1NULL\s0" 4 +.IX Item "NULL" +The creation of a new \s-1SSL_CTX\s0 object failed. Check the error stack to +find out the reason. +.Ip "Pointer to an \s-1SSL_CTX\s0 object" 4 +.IX Item "Pointer to an SSL_CTX object" +The return value points to an allocated \s-1SSL_CTX\s0 object. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +SSL_CTX_free(3), SSL_accept(3), +ssl(3), SSL_set_connect_state(3) |
