Method Standards.X509.verify_certificate_chain()

Method verify_certificate_chain

mapping verify_certificate_chain(array(string|.PKCS.Signature.Signed) cert_chain, mapping(string:Verifier|array(Verifier)) authorities, int|void require_trust)

Description

Decodes a certificate chain, ordered from leaf to root, and checks the signatures. Verifies that the chain can be decoded correctly, is unbroken, and that all certificates are in effect (time-wise.) and allowed to sign it's child certificate.

No verifications are done on the leaf certificate to determine what it can and can not be used for.

Returns a mapping with the following contents, depending on the verification of the certificate chain:

"error_code" : int	Error describing type of verification failures, if verification failed. May be one of the following, OR:ed together: CERT_TOO_NEW, CERT_TOO_OLD, CERT_ROOT_UNTRUSTED, CERT_BAD_SIGNATURE, CERT_INVALID, CERT_CHAIN_BROKEN, CERT_UNAUTHORIZED_CA or CERT_EXCEEDED_PATH_LENGTH.
"error_cert" : int	Index number of the certificate that caused the verification failure.
"self_signed" : bool	Non-zero if the certificate is self-signed.
"verified" : bool	Non-zero if the certificate is verified.
"authority" : Standards.ASN1.Sequence	The authority RDN that verified the chain.
"cn" : Standards.ASN1.Sequence	The common name RDN of the leaf certificate.
"certificates" : array(TBSCertificate)	An array with the decoded certificates, ordered from root to leaf.

Parameter cert_chain

An array of certificates, with the relative-root last. Each certificate should be a DER-encoded certificate, or decoded as a Standards.PKCS.Signature.Signed object.

Parameter authorities

A mapping from (DER-encoded) names to verifiers.

Parameter require_trust

Require that the certificate be traced to an authority, even if it is self signed.

See Standards.PKCS.Certificate.get_dn_string for converting the RDN to an X500 style string.