Remove experimental python script

temp/ecc-hybrid-encryption-example.py

@@ -1,57 +0,0 @@
-from tinyec import registry
-from Crypto.Cipher import AES
-import hashlib, secrets, binascii
-
-def encrypt_AES_GCM(msg, secretKey):
-    aesCipher = AES.new(secretKey, AES.MODE_GCM)
-    ciphertext, authTag = aesCipher.encrypt_and_digest(msg)
-    return (ciphertext, aesCipher.nonce, authTag)
-
-def decrypt_AES_GCM(ciphertext, nonce, authTag, secretKey):
-    aesCipher = AES.new(secretKey, AES.MODE_GCM, nonce)
-    plaintext = aesCipher.decrypt_and_verify(ciphertext, authTag)
-    return plaintext
-
-def ecc_point_to_256_bit_key(point):
-    sha = hashlib.sha256(int.to_bytes(point.x, 32, 'big'))
-    sha.update(int.to_bytes(point.y, 32, 'big'))
-    return sha.digest()
-
-
-def encrypt_ECC(curve, msg, pubKey):
-    ciphertextPrivKey = secrets.randbelow(curve.field.n)
-    sharedECCKey = ciphertextPrivKey * pubKey
-    secretKey = ecc_point_to_256_bit_key(sharedECCKey)
-    ciphertext, nonce, authTag = encrypt_AES_GCM(msg, secretKey)
-    ciphertextPubKey = ciphertextPrivKey * curve.g
-    return (ciphertext, nonce, authTag, ciphertextPubKey)
-
-def decrypt_ECC(encryptedMsg, privKey):
-    (ciphertext, nonce, authTag, ciphertextPubKey) = encryptedMsg
-    sharedECCKey = privKey * ciphertextPubKey
-    secretKey = ecc_point_to_256_bit_key(sharedECCKey)
-    plaintext = decrypt_AES_GCM(ciphertext, nonce, authTag, secretKey)
-    return plaintext
-
-def main():
-	curve = registry.get_curve('brainpoolP256r1')
-	msg = b'Text to be encrypted by ECC public key and ' \
-		  b'decrypted by its corresponding ECC private key'
-	print("original msg:", msg)
-	privKey = secrets.randbelow(curve.field.n)
-	pubKey = privKey * curve.g
-
-	encryptedMsg = encrypt_ECC(curve, msg, pubKey)
-	encryptedMsgObj = {
-		'ciphertext': binascii.hexlify(encryptedMsg[0]),
-		'nonce': binascii.hexlify(encryptedMsg[1]),
-		'authTag': binascii.hexlify(encryptedMsg[2]),
-		'ciphertextPubKey': hex(encryptedMsg[3].x) + hex(encryptedMsg[3].y % 2)[2:]
-	}
-	print("encrypted msg:", encryptedMsgObj)
-
-	decryptedMsg = decrypt_ECC(encryptedMsg, privKey)
-	print("decrypted msg:", decryptedMsg)
-
-if __name__ == "__main__":
-	main()