↓ 1 callersMethodisValidKeyUsageChecks if is valid key usage. <p> KeyUsage ::= BIT STRING { digitalSignature (0), nonRepudiation (1), keyEncipherment (2), dataEncipherment (3), keyAg
support/cas-server-support-x509-core/src/main/java/org/apereo/cas/adaptors/x509/authentication/handler/support/X509CredentialsAuthenticationHandler.java:273