jfrog-CVE-2022-21449

CVE-2022-21449 Overview This tool allows to perform a quick scan of compiled code archives .jar, .war etc in order to check for vulnerability to CVE-2022-21449 by looking for the string indicating the use of ECDSA algorithm. The tool uses Python3 with no additional prerequisites. Usage python...

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-2022-21449-vuln-test

CVE-2022-21449 Vulnerability tester Introduction There's a new CVE-2022-21449 that had bug in ECDSA signature verification. It's one of the algorithms used with JWT for example. Citing the blog post If you have deployed Java 15, Java 16, Java 17, or Java 18 in production then you should stop what...

CVE-2020-0601

CVE-2020-0601 PoC for CVE-2020-0601- Windows CryptoAPI Crypt32.dll POC: https://github.com/ollypwn/CurveBall On kali: 1.Make PKCS12 file openssl req -new -x509 -key spoofedca.key -out spoofedca.crt openssl ecparam -name secp384r1 -genkey -noout -out Microsoft.key openssl req -new -key Microsoft.k...

hsm

zhsm A Hardware Security Module HSM library for Zig providing PC/SC access to PIV , CAC , and YubiKey tokens. Status Aspect| Info ---|--- API Stability| Development Zig Version| 0.16.0 Platforms| Linux, macOS, Windows License| MIT Features PIV Support NIST SP 800-73-4 Certificate retrieval slots...

paranoid_crypto

Project Paranoid Overview Paranoid project checks for well known weaknesses on cryptographic artifacts such as public keys, digital signatures and general pseudorandom numbers. This library contains implementations and optimizations of existing work found in the literature. The existing work show...

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

CVE-2026-21009 – ECDSA Nonce Reuse in IoT Firmware Signing Program Code 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...

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...

RAMnesia-Attack

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 processin...

CVE-2024-42461

Solution for ECDSA and EDDSA Signature Verification Problems Description Problems have been identified in the verification of ECDSA and EDDSA signatures in the Wycheproof project. Missing checks during the signature decoding stage allow adding or removing zero bytes, which affects the ability to...

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...

ECC_Attacks

Known Attacks On Elliptic Curve Cryptography Introduction Introduction To Elliptic Curves Elliptic Curves In The Context Of Cryptography ECC Attacks ECDH Attacks The Order Of The Generator Is Too Small The Order Of The Generator Is A Smooth Number The Order Of The Generator Is Almost A Smooth...

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...

python-ecdsa

Pure-Python ECDSA and ECDH This is an easy-to-use implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Curve Digital Signature Algorithm, EdDSA Edwards-curve Digital Signature Algorithm and ECDH Elliptic Curve Diffie-Hellman, implemented purely in Python, released und...

certdepot

Certificate Depot A free online tool for generating self-signed SSL/TLS certificates in seconds. No signup required. Website: cert-depot.com Features Generate self-signed certificates with RSA 2048/4096 or ECDSA P-256/P-384 keys Download as ZIP PEM key + certificate or PFX PKCS12 Automatic SAN...

CurveBall

CurveBall CVE-2020-0601 - PoC CVE-2020-0601: Also known as CurveBall or ChainOffFools, is a vulnerability in the Microsoft CryptoApi specificly in Crypt32.dll where elliptic curve signatures ECDSA of certificates is not correctly verified. There is a very nice blog post here which explains the...

CVE-2022-21449-TLS-PoC

CVE-2022-21449-TLS-PoC CVE-2022-21449 also dubbed Psychic Signatures in the vulnerability writeup by Neil Madden Proof of Concept demonstrating its usage with a vulnerable client and a malicious TLS server. The malicious server presents a valid as of 2022-04-20 cert chain for www.google.com which...

CVE-2022-21449

CVE 2022 21449 python implementation This project allows you to: Plot an elliptic curve with desired parameters, over a finite field or not Generate a key pair from a given elliptic curve Encrypt / Decrypt a message via ECIES Sign / verify using ECDSA Simulate an exploitation of CVE 2022 21449 Fi...

Digital-Signature-Forgery-Attack

In this article, we will look at the cryptographic attack of digital signature forgery Digital Signature Forgery Attack, its consequences pose a threat to the security of transactions in the Bitcoin network, since digital signatures confirm the ownership and authorization of cryptocurrency...

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...