Rust Requires Chilkat v11.0.0+

RSA Sign with PKCS8 Encrypted Key

See more RSA Examples

Demonstrates how to load a private key from an encrypted PKCS8 file and create an RSA digital signature. Rust

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

let pkey = chilkat::PrivateKey::new();

// Load the private key from an RSA PEM file:
let _ = pkey.load_pkcs8_encrypted_file("privateKey.key", "myPassword").is_ok();

let rsa = chilkat::Rsa::new();

// Import the private key into the RSA object:
if rsa.use_private_key(&pkey).is_err() {
    println!("{}", rsa.last_error_text());
    return;
}

// Return the signature in hex
rsa.set_encoding_mode("hex");

let str_data = "This is the string to be signed.".to_string();

// Sign the string using the sha-1 hash algorithm.
// Other valid choices are "md2", "sha256", "sha384", "sha512",  and "md5".
let hex_sig = rsa.sign_string_enc(&str_data, "sha-1").unwrap_or_default();

println!("{}", hex_sig);