
The Ethereum Foundation and independent researchers propose a signature system change to make the ETH deposit contract quantum secure.
The Ethereum Foundation and independent researchers have proposed a new contract structure that is more flexible and supports quantum-secure signature systems, as the current ETH deposit contract is inadequate against quantum attacks.
AI-generated summary
The Ethereum network switched to the Proof of Stake (PoS) system in 2022 and uses the BLS signature system for staking transactions.
In the crypto world, where possible quantum-supported attacks in the future as well as artificial intelligence-supported attacks have been talked about a lot lately, Ethereum developers have presented a new proposal to protect the network.
The proposal, prepared by independent researchers Kevaundray Wedderburn and Tom Wambsgans along with Thomas Coratger, leader of the Ethereum Foundation's quantum security team, aims to make the ETH deposit contract resistant to quantum attacks.
What will be done with which improvements?
As it is known, the Ethereum network switched to the PoS system, which also includes the staking feature, in 2022. In this system, ETHs can only be deposited with the signature system known as BLS. So everyone who wants to be a validator has to use the same type of key (BLS)…
So the current contract (ETH deposit contract) only accepts BLS. Therefore, even if a quantum-resistant signature system comes, this contract will not accept the new system. This actually shows that the contract also needs to be changed.
Researchers will develop an “ETH deposit contract” that is more flexible and accepts both BLS and other signature systems. So, if the proposal is accepted, the ETH deposit contract will be redesigned.
The ultimate goal is the complete removal of BLS…
It is stated that if the proposal is implemented, initially ETHs can be deposited with many signature systems, including optionally BLS, but the ultimate goal is to completely disable BLS, that is, the non-quantum-resistant signature system, and use other new keys.
AI outlook — possibilities, not facts
Redesigning the ETH deposit contract to accept quantum secure signature systems.
Possible · Within months

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