Chilkat2-Python

URL Signing for Google Maps API

See more Encryption Examples

Demonstrates how to sign a URL for the Google Maps API. Chilkat2-Python

import chilkat2

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

crypt = chilkat2.Crypt2()

# 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.EncodingMode = "modBase64"

# Set the hash algorithm to sha-1
crypt.HashAlgorithm = "sha-1"
crypt.MacAlgorithm = "hmac"

# Set the HMAC key (this is the private key provided by Google)
crypt.SetMacKeyEncoded("vNIXE0xscrmjlyV-12Nj_BvUPaw=","modBase64")

# Compute the URL signature
sig = crypt.MacStringENC("/maps/api/geocode/json?address=New+York&sensor=false&client=clientID")

# The result should be KrU1TzVQM7Ur0i8i7K3huiw3MsA=
print(sig)