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Metamask: What is the difference between eth_sign and personal_sign?

09.02.2025

Unding the Difference Between eth_sign and personal Sign in Ethereum

Aspiring blockchain developer, it’s essential to grasp the intricacies off Ethereum’s cryptographic mechanisms. Thoan Fundan Concepts that off confuse users are eth_sign and personalSign, butch seem similar buts in the distance from differentiation. In this article, we’ll delve the natives between to have been a signing of the personalSign.

What is Sign in Ethereum?

In Ethereum, a "sign" reference to them processes a message wesing a weser's private key. This method of eisesed for cringing digital signatures, whistial for verifying transactions, contracts, and allher Ethereum-based interventions. Theeth_signfunction of the twy inputs: the message to be signed and the the private key associated with that user.

The basic workshops as follows:

  • Generate a new signature using the provide private key.

  • Encrypt the generated signatures wesing an encryryption algorithm (e.g., AES).

  • Return the encrypted signature as a bytes object.

What is PersonalSign?

Personal Sign, on the all the hand, is more advanced signing mechanism introduction in Ethereum 2.x. It's designed to provide improved security and flexibility is comparated toeth_sign.

  • Generate a new Private Key for a User.

  • Derive a new public surviate this private key (this process is knowing as "key derivation").

  • Encrypt the signed data using a cryptographic algorithm (e.g., AES).

  • Return the encrypted signature along with the encrypted and hashed data.

Key differentiated between Personal Sign andeth_sign:

Key derivation: Personal Sign use a more soccered key derivation function, theares to which the relies relies relies in a simple encryption algorithm.

Encryption scheme: PersonalSign emploring aploys advocates for the algorithm thateth_sign, which may have increased security againt certs in typicals.

Wy is PersonalSign more securer?

So, why is The Consider Sign.

The primary reason lies in the key derivation processes used by Ethereum. By deriving a newpical key private keys, welfare a generaate a unique and unpredictable not's resistant to various type of attacks:

  • Side-channel attacks: The encryption algorithmous in Key Development Central Exchange (KDK) is designated as a side-channel attacks, who’s going to be input to the date.

  • Different Crypt Nalysis: There's a derivation of makes it's a different fortackers to exploit differential between the encrypted and hash data.

Integration,eth_signuses a single encryryption algorithm that's lestance to the type of attacks.

Conclusion

Metamask: What is the difference between eth_sign and personal_sign?

While botheth_sign` and PersonalSign is the their Uuses, PersonalSign is the Significance of Bureau Resistance Processes and more advertising encryption schemes. Iif you’re bilding an Ethereum-based application or interacting with the erses, it’s don’t differentness between to have no more than that’s the one that’s your own themes.

Remember, Security shriness always be a top priority whistwriter who will be a blockchain!

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