RC4 (also known as ARC4) is a stream cipher used in popular protocols such as SSL and WEP. While remarkable for its simplicity and speed, multiple vulnerabilities have rendered it insecure. A web app for modular conversion, encoding, and encryption, all performed directly in your browser with no server interaction.

A tiny RC4 implementation in lua. Contribute to Mehgugs/minicrypto development by creating an account on GitHub.

A tiny RC4 implementation in Python 3. Contribute to sleepyeos/tinyrc4 development by creating an account on GitHub.

rc4 算法使用一个变长的密钥（通常为 8 至 256 字节）来生成一个伪随机的密钥流，然后将该密钥流与原始数据进行异或运算以实现加密。 解密时，再次将密钥流与密文进行异或运算即可恢复原始数据。

In cryptography, the Tiny Encryption Algorithm (TEA) is a block cipher notable for its simplicity of description and implementation, typically a few lines of code. It was designed by David Wheeler and Roger Needham of the Cambridge Computer Laboratory ; it was first presented at the Fast Software Encryption workshop in Leuven in 1994, and first ...

2021年5月27日 · NHÓM 15: TÌM HIỂU HỆ MẬT RC4 GVHD: Hán Trọng Thanh Nhóm 15 gồm: 1. Nguyễn Đức Thắng (Leader) 2. Nguyễn Văn Toán 3. Nguyễn Quang Linh 4.

2024年12月26日 · RC4 is a fast and efficient symmetric stream cipher that encrypts data one byte at a time using a variable-length key, but it is no longer recommended for new applications due to significant vulnerabilities.

2021年8月19日 · Hơn nữa, cách thức sử dụng RC4 trong SSL/TLS làm giảm thiểu các thiên vị trên, dẫn đến những tấn công "đặc chế" nhằm phá RC4 trong SSL/TLS. Một ví dụ nổi bật là tấn công NOMORE, có thể phá 1 HTTP cookie 16-byte trong khoảng 75 tiếng đồng hồ bằng cách gửi khoảng 2^30 yêu cầu.

2023年2月24日 · HỌC VIỆN CƠNG NGHỆ BƯU CHÍNH VIỄN THƠNG *** BÁO CÁO MẬT MÃ HỌC CƠ SỞ Mục lục Giảng Viên : Cao Minh Thắng Chủ đề : Mật mã dòng CR4 1.1 Mật mã dòng 1.1.1 Khái niệm 1.1.2 Đặc tính 1.1.2.1 Q trình mã hóa 1.1.2.2 Q trình giải mã 1.2 Cơ sở đời RC4 1.3 Thuật toán RC4 1.3.1 Tiny RC4 1.3 ...

2015年2月5日 · Although RC4 is unsuitable for most applications that require robust security, I like its simplicity and thought it might be interesting to see how much this could be optimized. I've managed 77 bytes but Peter Ferrie implemented version with 69 bytes.