Zig

ScMinidriver - List Certificates on a Smart Card or USB Token

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Gets a list of certificates contained on a smart card or USB token. Zig

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

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

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

    const scmd = try chilkat.ScMinidriver.init();
    defer scmd.deinit();

    // Reader names (smart card readers or USB tokens) can be discovered
    // via PCSC List Readers or PCSC Find Smart Cards
    const reader_name = "SCM Microsystems Inc. SCR33x USB Smart Card Reader 0";
    scmd.acquireContext(reader_name) catch {
        std.debug.print("{s}\n", .{try scmd.getLastErrorText(alloc)});
        return;
    };

    const st_certs = try chilkat.StringTable.init();
    defer st_certs.deinit();

    // We can choose one of the following items of information to get for each certificate:
    // "subjectDN" -- Return the full distinguished name of the cert.
    // "subjectDN_withTags" -- Same as above, but in a format that includes the subject part tags, such as the "CN=" in "CN=something"
    // "subjectCN" -- Return just the common name part of the certificate's subject.
    // "serial" -- Return the certificate serial number.
    // "serial:issuerCN" -- return the certificate serial number + the issuer's common name, delimited with a colon char.
    const cert_part = "subjectCN";

    scmd.listCerts(cert_part, st_certs) catch {
        std.debug.print("{s}\n", .{try scmd.getLastErrorText(alloc)});
        return;
    };

    const num_certs = st_certs.getCount();
    var i: i32 = 0;
    while (i < num_certs) {
        std.debug.print("{d}: {s}\n", .{ i, try st_certs.stringAt(alloc, i) });
        i = i + 1;
    }

    // Delete the context when finished with the card.
    scmd.deleteContext() catch {
        std.debug.print("{s}\n", .{try scmd.getLastErrorText(alloc)});
    };
}