Zig

Get Issuer Certificate Information

See more Certificates Examples

A certificate contains information about its issuer. This example demonstrates how to get the issuer information from a certificate. Zig

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

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

    const cert = try chilkat.Cert.init();
    defer cert.deinit();

    cert.loadFromFile("qa_data/certs/sample.cer") catch {
        std.debug.print("{s}\n", .{try cert.getLastErrorText(alloc)});
        return;
    };

    // Get issuer information:

    // -----------------------------------------------------------------------
    // (Not all subject fields may exist depending on the issuer certificate.)
    // -----------------------------------------------------------------------

    // Issuer DN (Distinguished Name, i.e. all the Issuer subject parts)
    std.debug.print("DN: {s}\n", .{try cert.getIssuerDN(alloc)});

    // Common Subject parts:
    // Issuer Common Name
    std.debug.print("CN: {s}\n", .{try cert.getIssuerCN(alloc)});

    // Issuer Country
    std.debug.print("C: {s}\n", .{try cert.getIssuerC(alloc)});

    // Issuer Email address
    std.debug.print("E: {s}\n", .{try cert.getIssuerE(alloc)});

    // Issuer Locality
    std.debug.print("L: {s}\n", .{try cert.getIssuerL(alloc)});

    // Issuer Organization
    std.debug.print("O: {s}\n", .{try cert.getIssuerO(alloc)});

    // Issuer Organizational Unit
    std.debug.print("OU: {s}\n", .{try cert.getIssuerOU(alloc)});

    // Issuer State
    std.debug.print("S: {s}\n", .{try cert.getIssuerS(alloc)});
}