Rust

DSA Generate Key

See more DSA Examples

Generates a DSA public/private key pair and saves to PEM and DER file formats (both encrypted and non-encrypted).

An encrypted DSA PEM looks like this:

-----BEGIN DSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,9DAFD5C4CD62A5D0

QwDdp66sB0qKXQli7FbVcKL/eo3wu7kGRlV2sI8XbkNa1RTLiwnwTWDB0dqyWRQ8
...
Bx0HVfxKiNgCbL6BQEnYD+GOmMcckuj9Uhgloe/YuXCIDJBGhjUt/li3hvR/PXeC

V2xxNl1XKBE88njqi+UXt4vjGVNLpvXM
-----END DSA PRIVATE KEY-----

Rust

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

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

// Call GenKey to generate a new DSA key.
// The number of bits should be at least 1024 and a multiple
// of 64.   Typical values are either 1024 or 2048.
// DSA key generation is compute intensive and may take
// a short while to complete.
if dsa.gen_key(2048).is_err() {
    println!("{}", dsa.last_error_text());
    return;
}

// Extract the private and public parts to PEM or DER format
// and save to files...
let mut pem_str = String::new();
let mut xml_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
xml_str = dsa.to_xml(b_public_only).unwrap_or_default();
let _ = dsa.save_text(&xml_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;
xml_str = dsa.to_xml(b_public_only).unwrap_or_default();
let _ = dsa.save_text(&xml_str, "dsa_priv.xml").is_ok();

println!("Finished!");