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tx-verifying-input-jsong-staff's Introduction

Verifying Transactions

This is a review of previous concepts.

Test Driven Exercise

from tx import Tx
from io import BytesIO
from ecc import S256Point, Signature

class Tx(Tx):

    
    def verify_input(self, input_index):
        '''Returns whether the input has a valid signature'''
        # get the relevant input
        # parse the point from the sec format (tx_in.sec_pubkey())
        # parse the signature from the der format (tx_in.der_signature())
        # get the hash type from the input (tx_in.hash_type())
        # get the sig_hash (z)
        # use point.verify on the z and signature
        pass

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