Zig

Add a PFX Source from BinData

Demonstrates the Chilkat Email.AddPfxSourceBd method, which adds PFX data held in a BinData object to the list of certificate and private-key sources used during decryption or signing. The second argument is the PFX password. Call it before obtaining the encrypted email so Chilkat can decrypt it automatically. This example loads a PFX into a BinData, adds it, and then loads an encrypted email.

Background: This is the in-memory (BinData) counterpart to AddPfxSourceFile. It is the right choice when the PFX bytes come from somewhere other than a file — a database, a secrets manager, or an HTTP download — letting you supply the certificate and private key without first writing them to disk (which is preferable for sensitive key material).

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

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

    // Demonstrates the AddPfxSourceBd method, which adds PFX data (held in a BinData) to the
    // list of certificate and private-key sources used during decryption or signing.  The
    // second argument is the PFX password.  Call it before obtaining the encrypted email.

    const email = try chilkat.Email.init();
    defer email.deinit();

    // Load PFX data into a BinData object.
    const bd_pfx = try chilkat.BinData.init();
    defer bd_pfx.deinit();
    bd_pfx.loadFile("qa_data/certs/decryption.pfx") catch {
        std.debug.print("{s}\n", .{try bd_pfx.getLastErrorText(alloc)});
        return;
    };

    // Add the PFX as a source of the certificate + private key.
    email.addPfxSourceBd(bd_pfx, "pfx_password") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    // Load an encrypted email; Chilkat decrypts it using the PFX source.
    email.loadEml("qa_data/eml/encrypted.eml") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Decrypted = {}\n", .{email.getDecrypted()});

    // Note: Paths such as "qa_data/..." are relative local filesystem paths,
    // relative to the current working directory of the running application.
}