Checksum

A checksum is an algorithm that verifies integrity, detects errors, and identifies sources, providing Clearance users with an extra layer of security and insurance that files were not modified. In Clearance, external integrations can provide their own checksum for a piece of digital evidence at the time of the upload.

During a typical upload, an integration should calculate the checksum of the encrypted file it is sending to Clearance. When it is time to do so, complete the file, it should provide the checksum (alongside the checksum algorithm used).

The checksum information should be included for all resources in the Evidence with the following JSON format:

{
  "ChecksumAlgorithm":"Sha512",
  "CompleteEvidenceResources":     
  [
    {
      "ResourceId":"38018",      
      "Checksum":"cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e"
    }
  ]
}