In this article I'm going to provide a brief review of protection methods against replay attacks, arising from signature malleability of elliptic curve cryptography.
Problem
Most cryptocurrencies are based on public-key cryptography. Each owner transfers coins to the next one digitally signing the transactionTx
containing the public key of the next owner.Thus everyone can verify that the sender wants to send her coins to the recipient, but a problem arises - how to prevent the inclusion of transactin Tx
in the blockchain twice?
Without such a protection an unscrupulous recipient may repeat Tx
as long as the sender has enough coins at his balance, making it impossible to reuse the same address for more then 1 transaction.
In particular the adversary can withdraw some coins from an exchange and repeat this transaction until there are no coins left on exchange (such attacks have already been…
In this article I'm going to provide a brief review of protection methods against replay attacks, arising from signature malleability of elliptic curve cryptography.
Problem
Most cryptocurrencies are based on public-key cryptography. Each owner transfers coins to the next one digitally signing the transactionTx
containing the public key of the next owner.Thus everyone can verify that the sender wants to send her coins to the recipient, but a problem arises - how to prevent the inclusion of transactin Tx
in the blockchain twice?
Without such a protection an unscrupulous recipient may repeat Tx
as long as the sender has enough coins at his balance, making it impossible to reuse the same address for more then 1 transaction.
In particular the adversary can withdraw some coins from an exchange and repeat this transaction until there are no coins left on exchange (such attacks have already been…
最新の記事
プログラム可能なトークンの新設計でCardanoの「凍結と押収」機能を実証 筆者: Jann Müller
12 March 2025
Cardano憲法:制定会議から批准までの道のり 筆者: Fernando Sanchez
27 February 2025
Plutus TxがPlinthに衣替え 筆者: Ziyang Liu
20 February 2025