└── generate_signature.cpp


/generate_signature.cpp:
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 1 | import hashlib
 2 | import ecdsa
 3 | 
 4 | def generate_signature(private_key, message):
 5 |     sk = ecdsa.SigningKey.from_string(private_key, curve=ecdsa.SECP256k1)
 6 |     signature = sk.sign(message.encode())
 7 |     return signature
 8 | 
 9 | def verify_signature(public_key, message, signature):
10 |     vk = ecdsa.VerifyingKey.from_string(public_key, curve=ecdsa.SECP256k1)
11 |     try:
12 |         vk.verify(signature, message.encode())
13 |         return True
14 |     except ecdsa.BadSignatureError:
15 |         return False
16 | 
17 | # Example
18 | private_key = b"your_private_key"
19 | public_key = b"your_public_key"
20 | message = "Blockchain transaction data"
21 | signature = generate_signature(private_key, message)
22 | 
23 | print(verify_signature(public_key, message, signature))  # True if valid
24 | 


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