Zig Requires Chilkat v11.0.0+

RSA Sign utf-8 Byte Representation of String

See more RSA Examples

Demontstrates how to sign the utf-8 byte representation of a string. 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.

    // Load an RSA private key for signing.
    const priv_key = try chilkat.PrivateKey.init();
    defer priv_key.deinit();
    priv_key.loadEncryptedPemFile("qa_data/pem/rsa_passwd.pem", "passwd") catch {
        std.debug.print("{s}\n", .{try priv_key.getLastErrorText(alloc)});
        return;
    };

    const rsa = try chilkat.Rsa.init();
    defer rsa.deinit();
    rsa.usePrivateKey(priv_key) catch {
        std.debug.print("{s}\n", .{try rsa.getLastErrorText(alloc)});
        return;
    };

    const original_data = "This is the string to be hashed an RSA signed.";

    // Indicate that we want the utf-8 byte representation of the string to be signed
    rsa.setCharset("utf-8");

    // We want the RSA signature in base64 format
    rsa.setEncodingMode("base64");

    const sig_base64 = try rsa.signStringENC(alloc, original_data, "sha256");
    std.debug.print("{s}\n", .{sig_base64});
}