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...

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 root@kitploit: openssl req -new -x509 -key spoofedca.key -out spoofedca.crt openssl ecparam -name secp384r1 -genkey -noout -out Microsoft.key openssl req -new...

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...

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...

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...

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...

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...

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...

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...

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...

python-ecdsa

Pure-Python ECDSA and ECDH 这是一个易于使用的 ECC（椭圆曲线密码学）实现，支持 ECDSA（椭圆曲线数字签名算法）、EdDSA（爱德华曲线数字签名算法）和 ECDH（椭圆曲线 Diffie-Hellman），完全用纯 Python 实现，并以 MIT 许可证发布。使用此库，您可以快速创建密钥对（签名密钥和验证密钥）、对消息签名并验证签名。您还可以基于交换的公钥协商出共享密钥。密钥和签名都非常短，易于处理并集成到其他协议中。 注意：此库不应在生产环境中使用，详情请参阅Security。 特性 此库为五种流行的 NIST“Suite B”GFp（ 素数域...

scallion

2020 プロジェクト更新 Scallion は OpenCL と RSA を学ぶための趣味プロジェクトでした。現在、Scallion はメンテナンスしていません 。以下の 2 点で問題が生じています。 1. Tor は v3 Onion アドレス に移行しており、Scallion は対応していません。古い v2 アドレスは 2021年10月 に使えなくなります。新しい仕様では異なる暗号プリミティブを使用し、全体的に複雑です。GPU 上で RSA 鍵のバッチを生成するための私たちのトリックは、必要な新しい ECDSA 鍵では同じようには機能しません。GPU...

ecdsa-private-key-recovery

ecdsa-key-recovery 执行ECDSA和DSA nonce重用私钥恢复攻击 一个用于分析签名漏洞的密码学研究工具 让我们恢复两个共享相同 nonce k 的签名所对应的私钥。请注意，选择相同的 nonce k 会导致两个签名具有相同的签名值 r。要找到ECDSA nonce重用的良好候选者，请检查在不同消息（或哈希）上共享相同 r、pubkey 和 curve 的签名。例如，基于 bitcoind 的区块链项目通常是ECDSA签名材料的良好来源。 sampleA r , sA, hashA , pubkey, curve sampleB r , sB, hashB ,...

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-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...

ecdsa-private-key-recovery

ecdsa-key-recovery 执行ECDSA和DSA随机数重用私钥恢复攻击 一个用于分析签名漏洞的密码学研究工具 让我们恢复两个共享相同 nonce k 的签名所对应的私钥。请注意，选择相同的 nonce k 会导致两个签名具有相同的签名值 r。要找到ECDSA随机数重用的良好候选者，请检查在 curve 上具有相同 r、pubkey 但针对不同消息（或哈希）的签名。例如，基于 bitcoind 的区块链项目通常是ECDSA签名材料的良好来源。 sampleA r , sA, hashA , pubkey, curve sampleB r , sB, hashB , pubkey...

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...

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

CVE-2026-21009 – ECDSA Nonce Reuse in IoT Firmware Signing Program Code Python root@kitploit: 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 sam...

EulerOS Virtualization 2.11.1 : python-ecdsa (EulerOS-SA-2026-3458)

According to the versions of the python-ecdsa packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities : The ecdsa PyPI package is a pure Python implementation of ECC Elliptic Curve Cryptography with support for ECDSA Elliptic Cur...

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...