public enum PdfEncryptionLevelPublic Enumeration PdfEncryptionLevelpublic enum class PdfEncryptionLeveltype PdfEncryptionLevel| Low | 1 | Encrypt PDF document with a 40-bit key |
| High | 2 | Ecrypt PDF document with a 128-bit key |
| VeryHigh | 3 | Ecrypt PDF document with a 256-bit key |