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openssl_x509_checkpurpose

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(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.

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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.

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Return Values

Returns TRUE if the certificate can be used for the intended purpose, FALSE if it cannot, or -1 on error.

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Document created the 30/01/2003, last modified the 26/10/2018
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References

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