Php/docs/function.openssl-x509-checkpurpose
openssl_x509_checkpurpose
(PHP 4 >= 4.0.6, PHP 5, PHP 7)
openssl_x509_checkpurpose — Verifies if a certificate can be used for a particular purpose
Description
openssl_x509_checkpurpose
( mixed $x509cert
, int $purpose
[, array $cainfo
= array()
[, string $untrustedfile
]] ) : int
openssl_x509_checkpurpose() examines a certificate to
see if it can be used for the specified purpose
.
Parameters
x509cert
The examined certificate.
purpose
- {| |+ openssl_x509_checkpurpose() purposes ! Constant ! Description |- | X509_PURPOSE_SSL_CLIENT | Can the certificate be used for the client side of an SSL connection? |- | X509_PURPOSE_SSL_SERVER | Can the certificate be used for the server side of an SSL connection? |- | X509_PURPOSE_NS_SSL_SERVER | Can the cert be used for Netscape SSL server? |- | X509_PURPOSE_SMIME_SIGN | Can the cert be used to sign S/MIME email? |- | X509_PURPOSE_SMIME_ENCRYPT | Can the cert be used to encrypt S/MIME email? |- | X509_PURPOSE_CRL_SIGN | Can the cert be used to sign a certificate revocation list (CRL)? |- | X509_PURPOSE_ANY | Can the cert be used for Any/All purposes? |} These options are not bitfields - you may specify one only!
cainfo
cainfo
should be an array of trusted CA files/dirs as described in Certificate Verification.untrustedfile
If specified, this should be the name of a PEM encoded file holding certificates that can be used to help verify the certificate, although no trust is placed in the certificates that come from that file.
Return Values
Returns TRUE
if the certificate can be used for the intended purpose,
FALSE
if it cannot, or -1 on error.