Create SIG I PUBKEY": Unlock Ethereum Operation

When obtaining Ethereum operation, it is explained to several components, including Scriptsig data and public keys. Understanding how to draw these parts can help decipher and check operations.

In this article, we will focus on the creation of Sig and Pubkey in the Scriptsig section "Transactions".

SECTIONSCRIPTSIG

Scriptsig is the first part of the script data in the Ethereum operation. It contains a script unlock that determines how to make a private key from public keys used by the sender and the recipient.

A typical section of Scriptsig starts with this format:

Hex

0x

...

In your case, assuming you have a private key in a paper wallet and want to get an operation from someone else, the Scriptsig section would look like this:

Hex

0x

tx_address

Neuzi_Key_id

Here:

  • is a public address of the sender.

  • is a unique identifier of your personal key.

  • PartICTICKING_Script” is the place where we will create our own signature.

Signature Creating

You need to calculate the signature using a private key to create SIG. The Ethereum signing procedure includes the calculation of your private key digestion and compared to the intended signature.

Here is an example of how you can create SIG strength, popular intellectual contracts programming language:

`'strength

Pragma solidity ^0.8.0;

Contract for unlocking {

CreateSignature () Public Return Payment Function (BIMT32) {)

// Calculate a private key digestion using Keccak-256 mixing

Bytes32 Privatekydigest = Keccak256 (both.encode_paced (

4, // 4 byte to address and key id

msg.Sender.address,

Msg.Value // Msg.Value is not directly available for strength, but so far we can use it as a reserved site.

))););

// Create a signature using private key digestion

Bytes32 SIG = KECCAK256 (both.enecode_paced (

1, // 1 byte Nonce (we will initially set 0)

Privatekydigest

))););

return sig;

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In this example:

  • Calculate thePrivate_KEY_DIGESTusing Hashing Keccak-256 algorithm with the sender's address and value.

  • Create a signature by calculating empty digestion (using 1 byte Nonce) and comparing it to the intended private key digestion.

Signature check

To check the signature, you can compare it with the signature used in the expected operation. In this case, we will use the same "unlock_script" as before:

Hex

0x

tx_address

Neuzi_Key_id

We will make a new signature using Digest private key and compare it to the intended signature:

Hex

Bytes32 sig = 0x ...

BOOL ISVALIDSIGNATURE () Public Screen Refund (BOOL) {

Return the Keccak256 (both.encode_packed (

1, // 1 byte nonce

Sig

)) == Bajites32 ("..." // Expected Private Key Digestion

);

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If the two signatures overlap, then we can believe that the signature is properly generated.

Conclusion

Creating Sig and checking its justice are important steps to decipher Ethereum operations. Understanding how part of Scriptsig Pubkey from the operation and creating your signature using a private key can check the authenticity of the transactions you have received. Remember that you always use safe practices when working with sensitive and safe storage of private keys.

دسته‌ها: CRYPTOCURRENCY