securityLevel

The Keymaster security level backing this key: one of KeyProperties.SECURITY_LEVEL_STRONGBOX, KeyProperties.SECURITY_LEVEL_TRUSTED_ENVIRONMENT, KeyProperties.SECURITY_LEVEL_SOFTWARE or KeyProperties.SECURITY_LEVEL_UNKNOWN. Requires API 31+; on older devices returns KeyProperties.SECURITY_LEVEL_UNKNOWN (use isStrongBoxBacked / keyInfo.isInsideSecureHardware there).