Returns the PEM chain an x5u names: the JOSE certificate with this SHA-256 thumbprint, in this scope, with its issuers.
x5u
the realm the certificate belongs to
the certificate's SHA-256 thumbprint in hex
the chain as concatenated PEM, or null when there is no such certificate
Returns the PEM chain an
x5unames: the JOSE certificate with this SHA-256 thumbprint, in this scope, with its issuers.