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<< Click to Display Table of Contents >> Navigation: Robo-FTP User's Guide > Appendix > Security > Supported Encryption Technologies > ZIP Encryption |
Robo-FTP supports password-protected encrypted ZIP files through use of the ZIP and UNZIP commands. Two encryption ciphers are supported with ZIP: the original PKZIP encryption scheme and AES-256. The original PKZIP encryption scheme is now known to be insecure, but it has an advantage that most ZIP programs are able to decrypt files using this cipher, if provided with the correct password. AES-256, in contrast, is an extremely secure, military-grade cipher, and though not all ZIP programs are able to understand AES-256-encrypted ZIP files, most commercial programs do support this cipher, including current versions of WinZip (since 2004), and WinRAR (since 2013). When more than a casual layer of security is necessary, a ZIP file should either be encrypted with AES-256 or else protected by an additional layer of encryption such as PGP (for data-at-rest) or TLS (for data-in-transit).