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(Classic ASP) Compute Glacier SHA256 Tree Hash of a FileComputes the Amazon Glacier SHA256 tree hash for a file. Note: This example requires Chilkat v9.5.0.78 or greater.
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% ' This example requires the Chilkat API to have been previously unlocked. ' See Global Unlock Sample for sample code. ' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Crypt2") set crypt = Server.CreateObject("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" treeHashHex = crypt.HashFileENC("qa_data/jpg/penguins.jpg") Response.Write "<pre>" & Server.HTMLEncode( "SHA256 tree hash = " & treeHashHex) & "</pre>" %> </body> </html> |
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