Rust

HMAC Hex String

See more Encryption Examples

Demonstrates how to compute an HMAC using a hexidecimal key and data. Rust

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

let crypt = chilkat::Crypt2::new();

// Set the MAC algorithm to HMAC
crypt.set_mac_algorithm("hmac");

// Our HMAC key will be the bytes represented in the following hex string.
// In other words, the HMAC key is composed of the bytes 0x41, 0xC2, 0x1C, ...
// (It is not composed of the us-ascii string '4', '1', 'C', ...)
let key_hex = "41C21CB9D7A02FC5D4FADB9E4755B9DE".to_string();
let _ = crypt.set_mac_key_encoded(&key_hex, "hex").is_ok();

// Our desire is to HMAC the bytes represented in the following string:
let data_hex = "C22078065B01460001000000010062043BF5B18228C8E02D17BCFE4E00561FA6DEC216EA97195CEB579942E275C21932258E3CD391E507FF4E7FD4C787A8447DA111C54A9C1795E7FF4C0BAA2EDA".to_string();

// We'll need to decode the hex to binary:
let bd = chilkat::BinData::new();
let _ = bd.append_encoded(&data_hex, "hex");

// Do the HMAC-SHA256 hash and return as a hex string:
crypt.set_encoding_mode("hex");
crypt.set_hash_algorithm("sha-256");
let mac_hex = crypt.mac_bd_enc(&bd).unwrap_or_default();
println!("{}", mac_hex);