Zig Requires Chilkat v11.0.0+

Iterate Keys and Certs in PEM

See more PEM Examples

Demonstrates how to access each of the private keys and certs contained within a PEM. Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

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

    const pem = try chilkat.Pem.init();
    defer pem.deinit();

    // Load the PEM from a file.
    // If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
    const password = "myPassword";
    pem.loadPemFile("../myPemFiles/myPem.pem", password) catch {
        std.debug.print("{s}\n", .{try pem.getLastErrorText(alloc)});
        return;
    };

    // Note: If the app already has the PEM pre-loaded in a string variable, then load it
    // by calling LoadPem instead.
    const pem_content = "... the PEM contents ...";
    try pem.loadPem(pem_content, password);
    // Check for success as before..

    // Iterate over the private keys.
    const num_private_keys = pem.getNumPrivateKeys();
    var i: i32 = 0;

    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    while (i < num_private_keys) {
        pem.privateKeyAt(i, priv_key) catch {};
        std.debug.print("Private Key {d} is {d} in length\n", .{ i, priv_key.getBitLength() });
        i = i + 1;
    }

    // Iterate over the certificates.
    const cert = try chilkat.Cert.init();
    defer cert.deinit();
    const num_certs = pem.getNumCerts();
    i = 0;
    while (i < num_certs) {
        pem.certAt(i, cert) catch {};
        std.debug.print("Certificate {d} : {s}\n", .{ i, try cert.getSubjectDN(alloc) });
        i = i + 1;
    }
}