Import Upstream version 1.3.3

examples/nist_challenge_response

@@ -0,0 +1,46 @@
+#!/usr/bin/env python
+"""
+Test challenge-response, assumes a NIST PUB 198 A.2
+20 bytes test vector in Slot 2 (variable input)
+"""
+
+import sys
+import yubico
+
+expected = \
+    b'\x09\x22\xd3\x40\x5f\xaa\x3d\x19\x4f\x82' + \
+    b'\xa4\x58\x30\x73\x7d\x5c\xc6\xc7\x5d\x24'
+
+# turn on YubiKey debug if -v is given as an argument
+debug = False
+if len(sys.argv) > 1:
+    debug = (sys.argv[1] == '-v')
+
+# Look for and initialize the YubiKey
+try:
+    YK = yubico.find_yubikey(debug=debug)
+    print("Version : %s " % YK.version())
+    print("Serial  : %i" % YK.serial())
+    print("")
+
+    # Do challenge-response
+    secret = b'Sample #2'.ljust(64, b'\0')
+    print("Sending challenge : %s\n" % repr(secret))
+
+    response = YK.challenge_response(secret, slot=2)
+except yubico.yubico_exception.YubicoError as inst:
+    print("ERROR: %s" % inst.reason)
+    sys.exit(1)
+
+print("Response :\n%s\n" % yubico.yubico_util.hexdump(response))
+
+# Workaround for http://bugs.python.org/issue24596
+del YK
+
+# Check if the response matched the expected one
+if response == expected:
+    print("OK! Response matches the NIST PUB 198 A.2 expected response.")
+    sys.exit(0)
+else:
+    print("ERROR! Response does NOT match the NIST PUB 198 A.2 expected response.")
+    sys.exit(1)