def test_Sign_Verification():
msg = 'Hello, I am a message, sign me'
for x in range(100):
# Generate pair of keys in PEM format
pub_privKey = Nakasendo.ECKey256K1()
pub_key = pub_privKey.pubKey
# Sign message with private Key
rSig, sSig = pub_privKey.sign(msg)
# Verify message's signature with public key
verify_ok = Nakasendo.verify(msg, pub_key, rSig, sSig)
assert verify_ok, "Test failed"
print(mykey)
print("derive a public key..")
myderivedKey = mykey.derivePublicKey("Using this message")
print(myderivedKey)
shares = mykey.SplitKey(3, 6)
print('And now recover')
recoveredKey = Nakasendo.ECKey256K1()
recoveredKey.RecoverKey(shares)
print(recoveredKey)
#Sign a msessage
msg = 'The quick brown fox jumped over the lazy dog'
sig = mykey.sign(msg)
print(sig)
verifyIt = Nakasendo.verify(msg, mykey.pubKey, sig[0], sig[1])
if (verifyIt == True):
print('msg verified')
#generate a shared secret
AliceKey = Nakasendo.ECKey256K1()
BobsKey = Nakasendo.ECKey256K1()
msgFromBob = BobsKey.CalculateSharedSecret(AliceKey.pubKey)
msgFromAlice = AliceKey.CalculateSharedSecret(BobsKey.pubKey)
print(msgFromBob)
print(msgFromAlice)
# Demo loading creating PEM file with Encryption and passphrase
# create an ECPoint
pt = Nakasendo.ECPoint()
pt.value = pubKeyStr
#print(pt.GetAffineCoOrdinates())
coords = pt.GetAffineCoOrdinates()
pempubkey = Nakasendo.pubKeyHexPtasPem(coords[0], coords[1])
print(pempubkey)
print('verify the pem format')
pubKeyStrValidate = Nakasendo.pubKeyPEMasHex(pempubkey, True)
#print(pubKeyStrValidate)
# get the affine co-ordinates
# get pem format
valPem = Nakasendo.verify(message, pempubkey, sigRStr, sigSStr)
if (valPem == True):
print(
'Calculated signature verified with calculated PEM & call to verify'
)
else:
print('Failed to verify with calculated PEM')
val = Nakasendo.verifyPubKeyHex(message, pubKeyStr, sigRStr, sigSStr)
if (val == True):
print('Calculated signature verified via Nakasendo verify')
else:
print('Failed to verify with Nakasendo verify')
hmMessage = Nakasendo.hash256(
message=message,