## Security

| Function | Description |
| -------- | ----------- |
| [open_with_password](./open_with_password/) | Open a password-protected PDF-document. |
| [encrypt](./encrypt/) | Encrypt PDF-document. |
| [decrypt](./decrypt/) | Decrypt PDF-document. |
| [set_permissions](./set_permissions/) | Set permissions for PDF-document. |
| [get_permissions](./get_permissions/) | Get current permissions of PDF-document. |
| [is_encrypted](./is_encrypted/) | Get encrypted status of PDF-document. |
| [sign_pkcs7](./sign_pkcs7/) | Sign a PDF-document using PKCS#7 digital signatures. |
| [sign_pkcs7_detached](./sign_pkcs7_detached/) | Sign a PDF-document using PKCS#7 Detached digital signatures. |
| [is_signed](./is_signed/) | Get signed status of PDF-document. |
| [remove_signs](./remove_signs/) | Remove signs from PDF-document. |


## Detailed Description

Security functions.