cryptography

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cryptovenom

CryptoVenom CryptoVenom: The Cryptography Swiss Army knife What is CryptoVenom? CryptoVenom is an OpenSource tool which contains a lot of cryptosystems and cryptoanalysis methods all in one, including classical algorithms, hash algorithms, encoding algorithms, logic gates, mathematical functions,...

cryptovenom

CryptoVenom CryptoVenom：密码学瑞士军刀 CryptoVenom 是什么？ CryptoVenom 是一个开源工具，包含多种密码系统和密码分析方法，集于一身，涵盖经典算法、哈希算法、编码算法、逻辑门、数学函数、现代对称与非对称加密等。 CryptoVenom 的目的是什么？ 简化密码分析或密码系统的使用与操作。 如果你是一名 CTF 玩家，或只是一个出于学习目的的好奇学生，这就是你的工具！ 错误？更新？ 由于这是一个非常大的工具，且由我独自创建，可能存在一些错误。如果你遇到错误，或某些功能无法正常工作，请尽快通过 Telegram @LockedByte、电子邮件...

CryptHook

CryptHook CryptHook is a modular implementation for securing existing applications with symmetrical block cipher encryption. It works by hooking the base system calls for network communication send/sendto and recv/recvfrom. Crypthook will work with any existing application that relies on these...

bkcrack

bkcrack Crack legacy zip encryption with Biham and Kocher's known plaintext attack. Overview A ZIP archive may contain many entries whose content can be compressed and/or encrypted. In particular, entries can be encrypted with a password-based symmetric encryption algorithm referred to as...

poc-cve-2016-10555

将算法从 RS256（非对称）改为 HS256（对称）- POC（CVE-2016-10555） HS256 算法使用密钥来签名和验证每条消息。 RS256 算法使用私钥签名消息，并使用公钥进行身份验证。 如果将从 RS256 改为 HS256，后端代码将把公钥作为密钥，然后使用 HS256 算法验证签名。 致谢： https://www.youtube.com/c/FarahHawa...

VSHG

VSHG - 硬件抗性与增强的 GnuPG 安全性 VSHG 旨在为 GnuPG 的标准 s2k 密钥派生函数提供内存/硬件抗性强化，并为对称 加密提供简化接口。 关于 VSHG VSHG（非常安全的哈希生成器）是 GnuPG（Gnu 隐私卫士）的独立插件。 它被编写为一个 shell 脚本，并基于 Unix/Linux 文件系统和命令设计。 VSHG 使用 sha384 和 Argon2 哈希函数进行密码处理， 并使用 AES-256-CFB + CAST5-128-CFB 级联进行最终加密。 同时使用标准 sha384 迭代次数 800 次 + Argon2i + d 的 15 次和...

some-tweak-to-hide-jwt-payload-values

some-tweak-to-hide-jwt-payload-values a handful of tweaks and ideas to safeguard the JWT payload, making it futile to attempt decoding by constantly altering its value, ensuring the decoded output remains unintelligible while imposing minimal performance overhead. What is a JWT Token? A JSON Web...

AdvSim.Cryptography

AdvSim.Cryptography El paquete NuGet AdvSim.Cryptography contiene un conjunto de funciones contenedoras criptográficas reutilizables, configuradas con valores predeterminados razonables y fáciles de usar. Encontrará más detalles en los distintos subapartados siguientes. Simétrico Generación de...

CVE-2026-59640

A flaw was found in Bouncy Castle for Java. A remote attacker can exploit an OpenPGP Open Pretty Good Privacy Cipher Feedback CFB quick-check oracle vulnerability. This oracle, active on symmetric and session-key paths, could allow an attacker to gain sensitive information by observing the result...

ALPINE-CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

AZL-94655 CVE-2026-71225 affecting package libkcapi 1.5.0-2

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225 Libkcapi: iv reuse in libkcapi one-shot symmetric cipher chunking causes cipher state reset across chunk boundaries

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

CVE-2026-71225

A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs over 64 KiB in stateful modes such as Counter CTR or Cipher Block Chaining CBC, the library improperly reuses the Initialization Vector IV for each internal data chunk. A remote attacker could...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

Exposure of Sensitive Information Through Metadata

Overview Affected versions of this package are vulnerable to Exposure of Sensitive Information Through Metadata via CFB quick-check decryption oracle in the getDataStream method of PGPSymmetricKeyEncryptedData, reached through PGPPBEEncryptedData, PGPSessionKeyEncryptedData, and...

DEBIAN-CVE-2026-59640

In Bouncy Castle for Java before 1.85, OpenPGP CFB quick-check oracle active on symmetric/session-key paths. This issue also affects Bouncy Castle for Java LTS before 2.73.12, and Bouncy Castle for Java FIPS BC-FJA before bcpg-fips 1.0.13 1.0.X series, 2.0.13 2.0.X series and 2.1.13 2.1.X series...