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(MFC) URL Signing for Google Maps APIDemonstrates how to sign a URL for the Google Maps API.
#include <CkCrypt2.h> void ChilkatSample(void) { CkString strOut; // 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= strOut.append(sig); strOut.append("\r\n"); SetDlgItemText(IDC_EDIT1,strOut.getUnicode()); } |
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