Zig

Decrypt a .p7m File (using a PFX)

See more Encryption Examples

_LANGUAGE_ sample code showing how to decrypt a .p7m using a .p12 / .pfx certificate w/ private key. 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 crypt = try chilkat.Crypt2.init();
    defer crypt.deinit();

    // Use a digital certificate and private key from a PFX file (.pfx or .p12).
    const pfx_path = "myCertAndKey.pfx";
    const pfx_password = "test123";

    crypt.addPfxSourceFile(pfx_path, pfx_password) catch {
        std.debug.print("{s}\n", .{try crypt.getLastErrorText(alloc)});
        return;
    };

    // Set the  outPath to whatever is appropriate.
    // If you are decrypting a PDF, your output might be "out.pdf"...
    const in_path = "smime.p7m";
    const out_path = "original.txt";

    // Indicate that we're doing public key decryption (i.e. PKCS7)
    crypt.setCryptAlgorithm("pki");

    crypt.ckDecryptFile(in_path, out_path) catch {
        std.debug.print("{s}\n", .{try crypt.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Success.\n", .{});
}