Perl

Compute Glacier SHA256 Tree Hash of a File

See more Amazon Glacier Examples

Computes the Amazon Glacier SHA256 tree hash for a file.

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

Perl

use chilkat();

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

$crypt = chilkat::CkCrypt2->new();

# 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->put_HashAlgorithm("sha256-tree-hash");

# Return the hash in lowercase hexidecimal format.
$crypt->put_EncodingMode("hexlower");

$treeHashHex = $crypt->hashFileENC("qa_data/jpg/penguins.jpg");
print "SHA256 tree hash = " . $treeHashHex . "\r\n";