Set the JWS Protected Header

See more JSON Web Signatures (JWS) Examples

Demonstrates Jws.SetProtectedHeader, which sets the integrity-protected header for a signer from a JsonObject. The header specifies the signature algorithm (alg).

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

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

    const jws = try chilkat.Jws.init();
    defer jws.deinit();

    // Build the JWS protected header.  The "alg" member names the signature algorithm.
    const header = try chilkat.JsonObject.init();
    defer header.deinit();
    header.updateString("alg", "HS256") catch {};

    // Set the protected header for signer index 0.  The protected header is integrity-protected: it is
    // covered by the signature.
    jws.setProtectedHeader(0, header) catch {
        std.debug.print("{s}\n", .{try jws.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Protected header set.\n", .{});
}