Category: Cryptanalysis

This article will focus on a vulnerability in inter-network bridge protocols, which is a big security threat to smart contracts between different blockchains. Cross bridges are an attractive target for hackers because they often represent a central storage point for the funds that support the "bridge" assets on the receiving blockchain. What are Internet Bridge Protocols? Bridges…

In this article, we will again touch on the topic of a signature failure in a blockchain transaction and apply a completely new attack: “WhiteBox Attack on Bitcoin” .Differential fault analysis (DFA)was briefly described in the literature in 1996 when an Israeli cryptographer and cryptanalyst Eli Biham and an Israeli scientist Adi Shamir showed that they could use error injection to extract the secret key and recover the private…

In this article, we will compile a complete list of cryptocurrency exchange hacks, starting with the most recent major hack of the Binance exchange , where hackers stole tokens BNBtotaling $ 570 million, and ending with the Mt. Gox, which during the period from 2010 по февраль 2014 годовwas the world's largest cryptocurrency exchange Bitcoinand serviced 80%transactions. This whole cyclic process of hacks is due to user data leaks . Cryptocurrency…

The biggest cryptographic strength of the Bitcoin cryptocurrency is a computational method in discrete mathematics that takes the problem of factorization of large integers and the problem of hidden numbers (HNP)in the Bitcoin signature transaction as a basis ECDSA.In this article, we will apply Signature Fault Differential Analysis ECDSAand derive a private key from a transaction for five different Bitcoin Wallets.Rowhammer Attack…

On the web, you can find a lot of controversy regarding the hacking of Bitcoin Wallets. The result of the discussion is the selection of two main ways: by gaining access to the PC of cryptocurrency owners and through the selection of private keys (с помощью личных данных пользователя). Bitcoin and other cryptocurrencies traditionally attract increased attention хакеров of various calibers,…

In this article, we implement an efficient Frey-Rück Attack algorithm for signing ECDSAa transaction on the Bitcoin blockchain. In our earlier posts, we touched on the topic of signature vulnerability several times ECDSA. With a critical vulnerability in the Bitcoin blockchain transaction, we can solve the rather difficult discrete logarithm problem to extract the ECDSA secret key"K" (NONCE) from the vulnerable signature in order to ultimately…

There are many forms to create a Bitcoin wallet. One of the first methods to create a Bitcoin wallet was known as  BrainWallet .BrainWallet convenient in the sense that it allows you to store in memory or in a notebook  " passphrase " . The passphrase is hashed using an algorithm  SHA-256, and is used as the seed to generate the  private key . Due to their popularity and…

Over the years, a whole cult has formed in the crypto community to create beautiful addresses for crypto wallets. Everyone can generate a "beautiful" address for themselves, which will not only be unique, but will also contain a certain combination of letters and numbers. This is a very exciting and interesting process, but the risk associated with involving a…

In pursuit of qubits,  Baidu Inc  , as the leader among Chinese search engines, does not lag behind its Western competitor  Alphabet Inc. In August 2022, Chinese search engine giant Baidu Inc developed its own quantum computer, soon dubbed "Qianshi". All super-powerful computers use quantum physics to solve complex problems that traditional devices cannot, using qubits, an evolution of the classic…

We all know the phrase:  "Everything that gets on the Internet, remains in it forever and becomes publicly available." Down to hidden content. The  2021 году pandemic brought back popularity  QR-кодов. For  the first time QR-коды they were used in production in  1994 году a subsidiary  Toyota in Japan and introduced them at an assembly plant to control produced cars and parts for them. Unlike a barcode,  QR-код it contains more…