Rust

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.

Rust

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

let crypt = chilkat::Crypt2::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.set_hash_algorithm("sha256-tree-hash");

// Return the hash in lowercase hexidecimal format.
crypt.set_encoding_mode("hexlower");

let tree_hash_hex = crypt.hash_file_enc("qa_data/jpg/penguins.jpg").unwrap_or_default();
println!("SHA256 tree hash = {}", tree_hash_hex);