Convert ECDSA firm to DER coded format in Python
In this article, we will explore the processing and an ECDSA of a hexadecimal chain to a der (distension rules) encoded the ECDSA and 'hashlib python’s libries.
Required Librries *
ECDSA: To generate and verify ECDSA
Hashlib: for hehing and sign the input information
Example of code
`Python
Import ECDSA
Import the ECDSA Library
Import hashlib
importing the hash library
of EC Import of EC #
Defines the key and the ECDSA firm
PUBKEY = b'your_pub_Key_hex_here '
Signature = b'signature_hex_here '
Create a new verification key that observes the public key provided
VK = ECDSA.verifyKey.from_string (BYS.FROMHEX (PUBKEY), CURVE = ECDSA.SECP256K1).
Define the HASH SHA-256 function and an instance of the HASHLIB Library
sha256_hash = hashlib.sha256 ()
Signs the entrance data using ECDSA (replane with the signature of yours)
Firming_data = Byterary ()
Vk.sign (signature, firming_data, Sha256_hash)
Convert the coded firm der to a hexadecimal chain
Der_encoded_signature = Bys (Firming_data) .hex ()
If vk.verify (bys.fromhamex (signature), bys.fromhamex (der_encodeed_signature), hashlib.sha256, sigdecode = ecdsa.siginghash.signinghash.signinghash.signinghash.signinghash.
Print ("successful verification!")
others:
Print ("He failed verification!")
Explanation*
- First the necessary booklets:
- We define the ECDSA key (public and private) and the firm in hexadecimal format.
- We create a new verifykey object using the public key provided.
- We define the Hash-256 hash function and an instance of the 'hashlib' library to sign
- We arevk.sign ()
Method to convert
- We verify the firm by comparing it without thevk.verify ()
method. If they make we print "successful verification!" Ofhrwise, we print "Verification is worth!"
Important notes *
- Make the replacement‘Your_pub_Key_Here’ ‘y
' signature_hex_here '' is a public format and real signature.
- TheECDSA.Siginghash.Der
flag is used to encode this is a standard coding scheme for ECDSA.
- You may have to adjust the code according to your specific requirements or handle different errors.
Following this example, he should successfully convert a Hexadecimal Ecdsa firm to Format coded by DER using the libraries' ECDSA and hashlib of Python.
