@php-wasm/webInterfacesKeyUsageこのページ内KeyUsage Index PropertiescRLSigndataEnciphermentdecipherOnlydigitalSignatureencipherOnlykeyAgreementkeyCertSignkeyEnciphermentnonRepudiationProperties optionalcRLSigncRLSign?: booleanoptionaldataEnciphermentdataEncipherment?: booleanoptionaldecipherOnlydecipherOnly?: booleanoptionaldigitalSignaturedigitalSignature?: booleanoptionalencipherOnlyencipherOnly?: booleanoptionalkeyAgreementkeyAgreement?: booleanoptionalkeyCertSignkeyCertSign?: booleanoptionalkeyEnciphermentkeyEncipherment?: booleanoptionalnonRepudiationnonRepudiation?: boolean