(C#) Compute Glacier SHA256 Tree Hash of a File

Computes the Amazon Glacier SHA256 tree hash for a file.

Note: This example requires Chilkat v9.5.0.78 or greater.

Chilkat .NET Downloads Chilkat .NET Framework Chilkat for .NET Core

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.Crypt2 crypt = new Chilkat.Crypt2();

// For more information about Amazon Glacier tree hashes, see Computing Glacier Checksums
// Chilkat added the "sha256-tree-hash" algorithm in v9.5.0.78 to make it easy to compute the Glacier tree hash checksum
// of a file or from bytes in memory.
crypt.HashAlgorithm = "sha256-tree-hash";

// Return the hash in lowercase hexidecimal format.
crypt.EncodingMode = "hexlower";

string treeHashHex = crypt.HashFileENC("qa_data/jpg/penguins.jpg");
Debug.WriteLine("SHA256 tree hash = " + treeHashHex);