RsaCtfTool

RsaCtfTool RSA multi-attack tool that decrypts data from weak public keys and recovers private keys. Overview This tool is a utility designed to decrypt data from weak public keys and attempt to recover the corresponding private key. It offers a comprehensive range of attack options for cracking...

CVE-2023-33242

CVE-2023-33242 CVE-2023-33242 PoC The simulated Lindell17 protocol is vulnerable to a bit extraction exploit, allowing an attacker to recover the private key by iteratively extracting individual bits of the key. The protocol is designed to generate ECDSA signatures in a client-server model, with...

PoC_CurveBall

CVE-2020-0601 - CurveBall Highlights PoC for CVE-2020-0601 Trivial solution for private-key of 1 Non-trivial solution for 1 private-key curve-order Written in C, uses OpenSSL's libcrypto Requirements Linux of some variety apt install libssl libssl-dev Or whatever package mananger you use Compilin...

ecdsa-private-key-recovery

ecdsa-key-recovery Perform ECDSA and DSA Nonce Reuse private key recovery attacks A cryptographic research tool for analyzing signature vulnerabilities Let's recover the private-key for two signatures sharing the same nonce k. Note how choosing the same nonce k results in both signatures having a...

ecdsa-private-key-recovery

ecdsa-key-recovery Perform ECDSA and DSA Nonce Reuse private key recovery attacks A cryptographic research tool for analyzing signature vulnerabilities Let's recover the private-key for two signatures sharing the same nonce k. Note how choosing the same nonce k results in both signatures having a...

CVE-2026-18040

In Bouncy Castle for Java before 1.86, HQC leaked secret-derived data through two side channels: its GF2^8 arithmetic used lookup tables indexed by field elements, making the cache line touched a function of the operand, and its fixed-weight support sampler left its duplicate scan as soon as a...

EUVD-2026-92004

In Bouncy Castle for Java before 1.86, HQC leaked secret-derived data through two side channels: its GF2^8 arithmetic used lookup tables indexed by field elements, making the cache line touched a function of the operand, and its fixed-weight support sampler left its duplicate scan as soon as a...

Linux Distros Unpatched Vulnerability : CVE-2026-18036

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Bouncy Castle for Java before 1.86, NTRU reduced secret values with the % operator in three helpers whose reference implementations are deliberately...

CVE-2026-18036

A flaw was found in Bouncy Castle. A timing side-channel vulnerability in the NTRU algorithm can lead to information disclosure. The implementation performs variable-time division operations on secret data instead of constant-time calculations, causing processing time to vary depending on the...

CVE-2026-18036

In Bouncy Castle for Java before 1.86, NTRU reduced secret values with the % operator in three helpers whose reference implementations are deliberately division-free, so each reduction was carried out by an integer division whose latency depends on the secret operand. Polynomial.modQ divided by a...

EUVD-2026-91317

In Bouncy Castle for Java before 1.86, NTRU reduced secret values with the % operator in three helpers whose reference implementations are deliberately division-free, so each reduction was carried out by an integer division whose latency depends on the secret operand. Polynomial.modQ divided by a...

CVE-2026-18036

Bouncy Castle for Java versions prior to 1.86 are vulnerable to a timing side-channel attack in the NTRU implementation. The root cause is the use of the % operator in three helpers, leading to integer division where latency depends on the secret operand. Specifically, Polynomial.modQ divides by ...

CVE-2026-63569

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

CVE-2026-63569

The bc-csharp library by Legion of the Bouncy Castle Inc. (versions before 2.7.0 ) is vulnerable to improper input validation in the DHAgreement.CalculateAgreement function during MTI/A0 two-pass Diffie-Hellman key exchanges. An on-path attacker can provide a crafted out-of-range or small-order e...

CVE-2026-21009-ECDSA-Nonce-Reuse-in-IoT-Firmware-Signing

CVE-2026-21009 – IoTファームウェア署名におけるECDSAナンス再利用 プログラムコード Python ecdsanoncereusesim.py - Signing firmware with repeated nonce k import ecdsa, hashlib sk = ecdsa.SigningKey.generatecurve=ecdsa.NIST256p vk = sk.getverifyingkey Sign two different firmware images with same nonce due to bad RNG In reality...

Scalar-Venom-Attack

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 th...

PT-2026-104107

Improper input validation in DHAgreement.CalculateAgreement MTI/A0 two-pass Diffie-Hellman in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an on-path attacker to make the local party compute an agreed value the attacker already knows, defeating the key authentication MTI/A0 is...

Phantom-Signature-Attack

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 SIGHASHSINGLE processing error . The study demonstrates that incorrect...

CVE-2024-31497-POC

CVE-2024-31497 POC This vulnerability exploits the biased ECDSA nonce generation in the ecc-ssh.c file. The nonce is generated with $sha512ID\ ||\ sha512privKey\ ||\ sha1data\ mod\ q$ leaving the top 9 bits to zero. In order to recover the private key we need 60 signatures but with 58 we still ha...

CentOS Linux 8.4 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc (CENTOS8.4:CLSA-2025:1751142817)

The CentOS Linux 8.4 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS8.4:CLSA-2025:1751142817 advisory. - Issue summary: A timing side-channel which could potentially allow recovering the private key exists in the ECDSA signature computation...