Rust

Generate new DSA Key from OpenSSL Parameters File

See more DSA Examples

Generates a new DSA key from an OpenSSL-created parameters file (DER and PEM formats supported). Examples of using OpenSSL to create parameter files are shown here:

openssl dsaparam -outform DER 1024 <  seedData.txt >dsaparam.der

openssl dsaparam 1024 < seedData.txt >dsaparam.pem

Rust

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

let dsa = chilkat::Dsa::new();

if dsa.gen_key_from_params_der_file("dsaparam.der").is_err() {
    println!("{}", dsa.last_error_text());
    return;
}

// To generate a key from PEM, call GenKeyFromParamsPem 
// (for an in-memory PEM string) or GenKeyFromParamsFilePem
// for a PEM file.

// The public and private keys may now be exported to PEM, DER,
// and XML formatted files.

let mut pem_str = String::new();

// First for the public key...
// The public key never needs to be encrypted.

// Save the public key in PEM format:
pem_str = dsa.to_public_pem().unwrap_or_default();
// This example will not check the return value of SaveText...
let _ = dsa.save_text(&pem_str, "dsa_pub.pem").is_ok();

// Save the public key in DER format:
let _ = dsa.to_public_der_file("dsa_pub.der").is_ok();

let mut b_public_only = true;
// Save to XML
let _ = dsa.to_xml(b_public_only).unwrap_or_default();
let _ = dsa.save_text(&pem_str, "dsa_pub.xml").is_ok();

// ------------------------------------
// Now for the private key....
// ------------------------------------

// Unencrypted PEM:
pem_str = dsa.to_pem().unwrap_or_default();
let _ = dsa.save_text(&pem_str, "dsa_priv.pem").is_ok();

// Encrypted PEM:
pem_str = dsa.to_encrypted_pem("myPassword").unwrap_or_default();
let _ = dsa.save_text(&pem_str, "dsa_privEncrypted.pem").is_ok();

// DER:
let _ = dsa.to_der_file("dsa_priv.der").is_ok();

// XML:
b_public_only = false;
let _ = dsa.to_xml(b_public_only).unwrap_or_default();
let _ = dsa.save_text(&pem_str, "dsa_priv.xml").is_ok();

println!("Finished!");