Rust

HMAC SHA-1 Matching FIPS Examples

See more Encryption Examples

Provides an example of computing an HMAC-SHA1 digest to duplicate the FIPS examples at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf Rust

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

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

let str_to_sign = "Sample #1".to_string();

// 64-byte key
let key = "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f".to_string();

// The expected result:
// (from Appendix A.1 at http://csrc.nist.gov/publications/fips/fips198/fips-198a.pdf )
let expected_result = "4f4ca3d5d68ba7cc0a1208c9c61e9c5da0403c0a".to_string();

// Here is the code to duplicate the results:
crypt.set_hash_algorithm("sha-1");
crypt.set_encoding_mode("hex");
crypt.set_mac_algorithm("hmac");

let _ = crypt.set_mac_key_encoded(&key, "hex");

let mac = crypt.mac_string_enc(&str_to_sign).unwrap_or_default();

println!("Computed: {}", mac);
println!("Expected: {}", expected_result);