Zig

URL Signing for Google Maps API

See more Encryption Examples

Demonstrates how to sign a URL for the Google Maps API. Zig

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

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

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    const crypt = try chilkat.Crypt2.init();
    defer crypt.deinit();

    // The output will be modified Base64.
    // Modified Base64 for URLs replaces the '+' and '/' characters
    // of standard Base64 with '-' and '_' respectively, so that these
    // Base64 signatures no longer need to be URL-encoded.
    crypt.setEncodingMode("modBase64");

    // Set the hash algorithm to sha-1
    crypt.setHashAlgorithm("sha-1");
    crypt.setMacAlgorithm("hmac");

    // Set the HMAC key (this is the private key provided by Google)
    crypt.setMacKeyEncoded("vNIXE0xscrmjlyV-12Nj_BvUPaw=", "modBase64") catch {};

    // Compute the URL signature
    const sig = try crypt.macStringENC(alloc, "/maps/api/geocode/json?address=New+York&sensor=false&client=clientID");

    // The result should be KrU1TzVQM7Ur0i8i7K3huiw3MsA=
    std.debug.print("{s}\n", .{sig});
}