Cryptanalysis

Crypto Deep Tech

Phantom Curve Attack: How the Pollard–Kangaroo Algorithm Exposes Private Keys of Lost Bitcoin Wallets via Low-Entropy Nonces under Exponential Degradation of the Secret Key Parameter “K”

This paper provides a comprehensive cryptanalysis of the  Dark Skippy attack , a specialized implementation of a fundamental vulnerability in the Elliptic Curve Digital Signature Algorithm (ECDSA) —a  nonce reuse attack , also known as  the Phantom Curve Attack . This vulnerability exploits the weak entropy of the k (nonce) parameter   during the signing process of cryptographic transactions, leading to the complete compromise of Bitcoin wallet users'…
Cryptanalysis
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Crypto Deep Tech

Bit-flipping attack on Wallet.dat: Risks of using AES-256-CBC without authentication, exploitation and extracting private keys from Bitcoin Core

Bitcoin Core program uses the symmetric cryptographic algorithm  AES-256-CBC to protect the wallet password . This algorithm is used to encrypt the wallet file (wallet.dat), where the user's private keys are stored. The level of protection is provided by a 256-bit key, which is created from the user's password. Bitcoin Core also uses elliptic curve cryptography to generate keys,…
Cryptanalysis
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Crypto Deep Tech

Private key Debug: Incorrect generation of private keys, system vulnerabilities and errors in calculating the order of the elliptic curve secp256k1 threats to the Bitcoin ecosystem

This paper analyzes cryptographic vulnerabilities related to incorrect generation of private keys in blockchain systems. One of the key issues is the incorrect calculation of the constant N, which determines the order of the group of points of the elliptic curve secp256k1, which can lead to the generation of invalid keys. This poses a serious security threat,…
Cryptanalysis
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Crypto Deep Tech

Discrete Logarithm mathematical methods and tools for recovering cryptocurrency wallets Bitcoin

In early 2025, the rise in the rate of popular cryptocurrencies had a significant impact on financial transactions. Despite their widespread use and apparent security, these systems remain vulnerable. One of the main problems remains the recovery of lost cryptocurrency wallets and private keys, which can be done using complex mathematical algorithms. In this article, we will…
Cryptanalysis
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Crypto Deep Tech

DUST ATTACK blockchain transaction with confirmation of isomorphism for a total amount of 10000 BTC

In this article we will cover a broad topic: “Dust Attack” known as: "Dusting Attack"or "Crypto Dust". Perhaps every cryptocurrency user or holder of a large amount of BTC, ETH coins replaced the receipt of an insignificantly small amount of coins in satoshi on their cryptocurrency wallet , this receipt is disguised as "Donate", but in fact it is a whole mathematically refined system for taking…
Cryptanalysis
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Crypto Deep Tech

Chronoforge Attack: An Analysis of an ARM TrustZone Vulnerability — From Microsecond-Level Leakage to Full Compromise of Bitcoin Wallet Private Keys

This research paper presents a comprehensive analysis of the critical  Chronoforge Attack vulnerability  —a class of timing side-channel attacks capable of completely compromising ECDSA (secp256k1) cryptographic operations when improperly implemented on Nordic nRF52/nRF53 microcontrollers with ARM TrustZone architecture. The study demonstrates the theoretical and practical feasibility of targeted Bitcoin private key extraction and recovery of compromised wallets by exploiting…
Cryptanalysis
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Crypto Deep Tech

Shadow Key Attack: a fundamental threat of nonce leakage in Bitcoin transactions from the EUCLEAK mechanism via side channels of the Extended Euclidean Algorithm in YubiKey 5 devices and Infineon microcontrollers

This paper presents a cryptanalytic study  of the Shadow Key Attack  , a Bitcoin private key recovery method that exploits a critical vulnerability in the Elliptic Curve Digital Signature Algorithm (ECDSA) when an ephemeral random number  (k ) (nonce) is reused or leaked. The study reveals a deep connection between the Shadow Key Attack and the  EUCLEAK mechanism  (CVE-2024-45678) , discovered by NinjaLab researchers in YubiKey…
Cryptanalysis
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Crypto Deep Tech

RAMnesia Attack: A Scientific Investigation of WireTap Threats to Bitcoin Infrastructure, Hardware Vulnerabilities (CVE-2025-6202, CVE-2023-39910), and Cryptanalytic Methods for ECDSA Key Recovery

This research presents a comprehensive analysis of two critical classes of attacks on the hardware memory of modern computer systems using DDR5 memory:  Phoenix Rowhammer Attack (CVE-2025-6202)  and  RAMnesia Attack (CVE-2023-39910) . Both attacks demonstrate fundamental vulnerabilities in the processing and storage of cryptographic material, creating unprecedented compromise vectors for recovering Bitcoin wallet private keys. The research integrates the results of…
Cryptanalysis
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Crypto Deep Tech

Phantom Signature Attack: An Analysis of the Critical Vulnerability CVE-2025-29774 in the Bitcoin Protocol, SIGHASH_SINGLE Implementation Flaws, and the Mathematical Framework for Private Key Recovery in Lost Cryptocurrency Wallets Enabling Unrestricted Control over BTC Assets

This research paper presents a comprehensive cryptanalytic study of critical vulnerabilities in the Bitcoin protocol's digital signature implementation, namely  the Phantom Signature Attack  (CVE-2025-29774) and the fundamental  SIGHASH_SINGLE processing error . The study demonstrates that incorrect processing of cryptographic primitives in the transaction signature mechanism creates the conditions for the complete compromise of cryptocurrency wallet owners' private keys without their knowledge.…
Cryptanalysis
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Crypto Deep Tech

RingSide Replay Attack: Recovering the SEED → deriving Bitcoin wallet private keys and how 32-bit entropy instead of 256-bit led to the systematic compromise of crypto-asset funds

This paper presents a comprehensive cryptanalytic review of the critical vulnerability  CVE-2023-39910 , codenamed  "Milk Sad ," discovered in the widely used  Libbitcoin Explorer utility versions 3.0.0–3.6.0. The fundamental flaw lies in the use of a cryptographically insecure Mersenne Twister-32 (MT19937)  pseudorandom number generator  initialized by the system time, which catastrophically limits the entropy space to  32 bits  instead of the required 256 bits. The paper thoroughly…
Cryptanalysis
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Crypto Deep Tech

Scalar Venom Attack: A critical HSM initialization vulnerability (CVE-2025-60013) enables private Bitcoin wallet key recovery through buffer overflow exploitation and shell metacharacters in the F5OS-A FIPS security module

This paper analyzes cryptographic vulnerabilities discovered in modern cryptographic key management infrastructure, with a particular focus on critical flaws in the architecture of hardware security modules (HSMs) when handling elliptic curve private keys. The study focuses on a class of attacks that exploit insufficiently isolated RAM management in certified cryptographic devices. In the modern Bitcoin cryptographic ecosystem,…
Cryptanalysis
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Crypto Deep Tech

Pixnapping Attack: Compromising private keys and seed phrases through vulnerability CVE-2025-48561 represents a new critical threat to the Bitcoin network and Android infrastructure

This article examines the evolution of security threats in the cryptocurrency storage space, focusing on modern methods for compromising private keys and seed phrases, which secure digital wallets. The modern cryptocurrency ecosystem faces a growing threat of cyberattacks aimed at compromising private keys and seed phrases, which are the foundation of digital wallet security. The complexity and…
Cryptanalysis
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Crypto Deep Tech

Phoenix Rowhammer Attack: Systemic Risk of Bitcoin Wallet Private Key Compromise in Global Blockchain Infrastructure Due to a Critical SK Hynix DDR5 Vulnerability (CVE-2025-6202)

This article examines the systemic cryptographic security threats posed by the Phoenix Rowhammer attack (CVE-2025-6202), which can extract private keys from DDR5 RAM through hardware-level bit manipulation. In recent years, the dynamic development of cryptocurrency technologies has led to an increased dependence of digital asset ecosystems on hardware and microchip components that store and process cryptographic data.…
Cryptanalysis
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