(C++) URL Signing for Google Maps API
Demonstrates how to sign a URL for the Google Maps API.
#include <CkCrypt2.h>
void ChilkatSample(void)
{
// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.
CkCrypt2 crypt;
// 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.put_EncodingMode("modBase64");
// Set the hash algorithm to sha-1
crypt.put_HashAlgorithm("sha-1");
const char *sig = 0;
// Set the HMAC key (this is the private key provided by Google)
crypt.SetHmacKeyEncoded("vNIXE0xscrmjlyV-12Nj_BvUPaw=","modBase64");
// Compute the URL signature
sig = crypt.hmacStringENC("/maps/api/geocode/json?address=New+York&sensor=false&client=clientID");
// The result should be KrU1TzVQM7Ur0i8i7K3huiw3MsA=
std::cout << sig << "\r\n";
}
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