basicCertificateChainValidator
Performs basic certificate chain validation.
Specifically, these checks are performed:
every certificate in the chain is signed by the next one,
signer certificate's subject matches signed certificate's issuer,
certificates are not expired,
signer certificate have
CERT_SIGNkey usageif the lst certificate is self-signed (root) and has basic constrains extension
CA flag is set to true
number of certificates in the chain satisfies path length constraint
Return
false (meaning this function cannot find the root certificate and establish trust)
Throws
if the certificate chain is not valid