Ethereum: ripemd160(sha256(publickey)) – Where am I going wrong?

Ethereum: Ripemd160(Sha256(publickey)) – Where am I going wrong?

As you embark on your journey to understanding Ethereum, you’re likely familiar with the concept of cryptographic keys and their role in securing transactions. However, when it comes to generating and verifying signatures using Ethereum’s Ripemd160 hash function, there are several common pitfalls that can lead to errors.

In this article, we will delve into the specifics of Ethereum’s Ripemd160(Sha256(publickey)) formula and explore where you might be going wrong.

Understanding the Formula

The Ripemd160 hash function is a one-way cryptographic algorithm that takes a large input (public key) as an argument and produces a fixed-size output (signature). The basic formula is:

Ripemd160 ( Sha256 ( publickey )) = Sha256 ( publickey ) + nonce

where nonce is the nonces (initialization vectors) used in the SHA-256 hashing process.

The Issue

Now, let’s examine where you might be going wrong. Here are a few potential issues:

• Public Key Format: Ensure that your public key is in the correct format for Ethereum. The publickey argument should be a hexadecimal string with at least 64 characters (32 bytes) and no padding.

• SHA-256 Output

  

  : Verify that you are using the SHA-256 output of your public key as the input to the Ripemd160 hash function. Ensure that the SHA-256 output is not truncated or modified in any way.

• Ripemd160 Algorithm Version: The Ethereum Ripemd160 algorithm uses the SHA-256 algorithm. If you are using a different version, make sure that it is compatible with Ethereum’s requirements.

• Nonce Initialization: If you’re initializing your nonces incorrectly, it can lead to incorrect signatures being generated.

Example Use Case

To illustrate where you might be going wrong, let’s consider an example:

You have an Ethereum Ripemd160(Sha256(publickey)) signature using the Ethereum Ripemd160(Sha256(publickey)) formula. However, if your nonces are initialized incorrectly or if you are not using the SHA-256 output of your public key as expected, you may encounter errors.

const ripemd160 = crypto.createHash('ripemd160');

const sha256 = crypto.createHash('sha256');


// Initialize the nonce correctly

const nonce = 0x1234567890abcdef;


// Convert public key to hexadecimal string

const publicKey = '0x1234567890abcdef';


// Use the SHA-256 output as input to Ripemd1

ripemd160.update(sha256.update(publicKey, 'utf8'));

letter ripemd160Signature;

if (ripemd160.digest().toString('hex') !== sha256.digest().toString('hex')) {

  console.error('Error generating signature');

} }

Conclusion

When using the Ethereum Ripemd160(Sha256(public key)) formula, make sure you are following best practices for public key format, SHA-256 output, algorithm version compatibility, and nonce initialization. By doing so, you’ll be well on your way to successfully generating and verifying signatures in your Ethereum-based applications.

Additional Resources

For further guidance, I recommend checking out the official Ethereum documentation on cryptographic keys and signature generation:

• [Ethereum Core API](

• [EIP-1559: Ripemd160(Sha256(publickey))](

Remember to always consult the official resources and follow best practices for secure cryptographic key management. Happy coding!

Improving Decision Making When Investing