[
  {
    "Id": "944044",
    "ThreadId": "403821",
    "Html": "\r\n<p>I was looking at the help and documentation to see if there was support for Digital Signatures of a generated ZIP.&nbsp; We are looking to ensure the ZIP has not been tampered with. We were using this in the .NET System.IO.Packaging namespace.&nbsp; I do\r\n not see any current support for digital signatures.&nbsp; Just wanted to confirm that this was the case?</p>\r\n<p>Thanks,<br>\r\nZach</p>\r\n",
    "PostedDate": "2012-11-19T08:33:42.107-08:00",
    "UserRole": null,
    "MarkedAsAnswerDate": null
  },
  {
    "Id": "1029283",
    "ThreadId": "403821",
    "Html": "Hi Zach\r<br />\n<br />\nAs far as I know there is no support for digitally signing .zip files, but this is because the .zip format itself does not support it\r<br />\n<br />\nI can think of one workaround that would be to calculate a Hash value (fingerprint) of the .zip file data and then convert that hash value to base64 (readable text) and store that in the ZipFile Comment field.\r<br />\n<br />\nThen to check if the file has been tampered with you could re-hash the data and compare it to the hash saved in the comment field\r<br />\n<br />\nJust an idea\r<br />\n<br />\nHope it helps<br />\n",
    "PostedDate": "2013-04-11T17:33:57.207-07:00",
    "UserRole": null,
    "MarkedAsAnswerDate": null
  }
]