Ethereum: how to derive the Bech32 address from the P2WPKH output script
When creating your applications related to encryption, it is essential to understand the underlying structures and transactions. An aspect of Ethereum architecture is the use of addresses, which can be complex enough for the newborn. In this article, we will deepen how to derive a Bech32 address from a P2WPKH output script (protected public key).
Presentation of the P2WPKH output script
A P2WPKH output script is one of the two types used in Ethereum transactions. The other type is PPVRF (Diffie-Hellman Private Public). In this context, we will focus on the P2WPKH output script. The P2WPKH output script represents a private key, which is protected by a public key using the Elliptical Courbe digital signature algorithm (ECDSA).
Driving the Bech32 address from the P2WPKH output script **
To derive a Bech32 address from a P2WPKH output script, you will have to follow these steps:
- Identify the public key
: The public key is generally represented as a hexadecimal chain and is accessible directly from the script.
- Extract the private key
: you will have to extract the private key from the script. This generally consists in extracting the value of a private key associated with the public key.
In Ethereum, the P2WPKH output script format uses a specific syntax to code the private key in base format64. The coded private key can be obtained by deleting the prefix 0x ... Leader and by annexing the remaining characters at the end of the hexadent chain.
- Generate the BECH32 address: Once you have the coded private key, you can generate the Bech32 address using an algorithm or an expert library.
Code example
Here is an example of a python script that shows how to derive a Bech32 address from a P2WPKH output script:
`Python
Import the base64
DEF DRIVI_BECH32_ADDRESS (P2WKH_OUTPUT_Script):
Extract the private key from the script (assuming it starts with '0x ...')
Private_key = p2wkh_output_sript [10:]
General address Bech32 using a library like Ecrecover or Bech32.Py
Import ecrever
Rec = Ecrecover.Crocover ()
Addr = rec.from_private_bytes (base64.b64decode (private_key))
return addr
Example of use:
p2wkh_output_Script = "0x ... (your P2WPKH output script)"
bech32_address = deriv_bech32_address (p2wkh_output_script)
Print (Bech32_Address)
Exit: Your Bech32 address
` ‘
Important considerations
Remember that this is a simplified example and may not cover all cases. You must also be aware of the potential security risks associated with the derivation of private keys, such as exposing confidential information.
While you continue to create your projects related to encryption, it is essential to stay up to date with the latest developments and practices recommended to work with Ethereum addresses and scripts.
By following these steps, you can now derive from P2WPKH output script addresses and obtain a more in -depth understanding of the operation of Ethereum architecture.