diff options
Diffstat (limited to 'secure/lib/libssl/man/SSL_CTX_load_verify_locations.3')
-rw-r--r-- | secure/lib/libssl/man/SSL_CTX_load_verify_locations.3 | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/secure/lib/libssl/man/SSL_CTX_load_verify_locations.3 b/secure/lib/libssl/man/SSL_CTX_load_verify_locations.3 new file mode 100644 index 0000000..b2ab727 --- /dev/null +++ b/secure/lib/libssl/man/SSL_CTX_load_verify_locations.3 @@ -0,0 +1,254 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Wed Feb 19 16:47:38 2003 +.\" +.\" 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 certificates +available via \fBCAfile\fR and \fBCApath\fR are trusted. +.SH "NOTES" +.IX Header "NOTES" +If \fBCAfile\fR is not \s-1NULL\s0, it points to a file of \s-1CA\s0 certificates in \s-1PEM\s0 +format. The file can contain several \s-1CA\s0 certificates identified by +.PP +.Vb 3 +\& -----BEGIN CERTIFICATE----- +\& ... (CA certificate in base64 encoding) ... +\& -----END CERTIFICATE----- +.Ve +sequences. Before, between, and after the certificates text is allowed +which can be used e.g. for descriptions of the certificates. +.PP +The \fBCAfile\fR is processed on execution of the \fISSL_CTX_load_verify_locations()\fR +function. +.PP +If \fBCApath\fR is not \s-1NULL\s0, it points to a directory containing \s-1CA\s0 certificates +in \s-1PEM\s0 format. The files each contain one \s-1CA\s0 certificate. The files are +looked up by the \s-1CA\s0 subject name hash value, which must hence be available. +If more than one \s-1CA\s0 certificate with the same name hash value exist, the +extension must be different (e.g. 9d66eef0.0, 9d66eef0.1 etc). The search +is performed in the ordering of the extension number, regardless of other +properties of the certificates. +Use the \fBc_rehash\fR utility to create the necessary links. +.PP +The certificates in \fBCApath\fR are only looked up when required, e.g. when +building the certificate chain or when actually performing the verification +of a peer certificate. +.PP +When looking up \s-1CA\s0 certificates, the OpenSSL library will first search the +certificates in \fBCAfile\fR, then those in \fBCApath\fR. Certificate matching +is done based on the subject name, the key identifier (if present), and the +serial number as taken from the certificate to be verified. If these data +do not match, the next certificate will be tried. If a first certificate +matching the parameters is found, the verification process will be performed; +no other certificates for the same parameters will be searched in case of +failure. +.PP +In server mode, when requesting a client certificate, the server must send +the list of CAs of which it will accept client certificates. This list +is not influenced by the contents of \fBCAfile\fR or \fBCApath\fR and must +explicitly be set using the +SSL_CTX_set_client_CA_list(3) +family of functions. +.PP +When building its own certificate chain, an OpenSSL client/server will +try to fill in missing certificates from \fBCAfile\fR/\fBCApath\fR, if the +certificate chain was not explicitly specified (see +SSL_CTX_add_extra_chain_cert(3), +SSL_CTX_use_certificate(3). +.SH "WARNINGS" +.IX Header "WARNINGS" +If several \s-1CA\s0 certificates matching the name, key identifier, and serial +number condition are available, only the first one will be examined. This +may lead to unexpected results if the same \s-1CA\s0 certificate is available +with different expiration dates. If a \*(L"certificate expired\*(R" verification +error occurs, no other certificate will be searched. Make sure to not +have expired certificates mixed with valid ones. +.SH "EXAMPLES" +.IX Header "EXAMPLES" +Generate a \s-1CA\s0 certificate file with descriptive text from the \s-1CA\s0 certificates +ca1.pem ca2.pem ca3.pem: +.PP +.Vb 5 +\& #!/bin/sh +\& rm CAfile.pem +\& for i in ca1.pem ca2.pem ca3.pem ; do +\& openssl x509 -in $i -text >> CAfile.pem +\& done +.Ve +Prepare the directory /some/where/certs containing several \s-1CA\s0 certificates +for use as \fBCApath\fR: +.PP +.Vb 2 +\& cd /some/where/certs +\& c_rehash . +.Ve +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +The following return values can occur: +.Ip "0" 4 +The operation failed because \fBCAfile\fR and \fBCApath\fR are \s-1NULL\s0 or the +processing at one of the locations specified failed. Check the error +stack to find out the reason. +.Ip "1" 4 +.IX Item "1" +The operation succeeded. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +ssl(3), +SSL_CTX_set_client_CA_list(3), +SSL_get_client_CA_list(3), +SSL_CTX_use_certificate(3), +SSL_CTX_add_extra_chain_cert(3), +SSL_CTX_set_cert_store(3) |