Cryptography

Shanxi IoT Leader Cross-Industry Merger and Acquisition: Acquiring ‘Password Giant’ Shudun Technology to Enter the Trillion-Yuan Data Security Market

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Shanxi IoT Leader Cross-Industry Merger and Acquisition: Acquiring 'Password Giant' Shudun Technology to Enter the Trillion-Yuan Data Security Market

On the evening of November 23, Rockchip Technology Group Co., Ltd. (hereinafter referred to as “Rockchip Technology”) announced that the company is planning to acquire a controlling stake in Shudun Information Technology Co., Ltd. (hereinafter referred to as “Shudun Technology”) through the issuance of shares and cash payment, along with raising supporting funds. The company’s … Read more

Blake3 Hashing Secrets for 10 GB: Merkle Tree Parallelism + SIMD Pipelining

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Blake3 Hashing Secrets for 10 GB: Merkle Tree Parallelism + SIMD Pipelining

Complete Analysis of the Blake3 Hash Algorithm —— The fastest, strongest, and most modern cryptographic hash function of 2025 (completely surpassing SHA-256/SHA-3) Project Blake3 SHA-256 SHA-3 (Keccak) XXH3 Design Year 2020 (Successor to Blake2) 2001 2015 2021 (Non-cryptographic) Security Level 128–256 bit (configurable) 128 bit 128–256 bit 0 bit (unsafe) Single-core Speed (64 bytes) 1.8–2.2 … Read more

A Comprehensive Comparison of Symmetric and Asymmetric Encryption

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A Comprehensive Comparison of Symmetric and Asymmetric Encryption

In computer networks,the comparison between symmetric and asymmetric encryption covers core principles, performance parameters, selection and applications. 1. Core Differences Comparison Table Feature Symmetric Encryption Asymmetric Encryption Key Mechanism Uses thesame key for encryption and decryption Public key encryption + private key decryption Algorithm Examples AES-256, DES, 3DES RSA, ECC, DSA Speed Comparison Very fast … Read more

Building a Strong Network and Data Security Barrier Starting from Cryptographic Algorithms

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Building a Strong Network and Data Security Barrier Starting from Cryptographic Algorithms

Starting fromCryptographic Algorithms Building a StrongNetwork and Data SecurityBarrier Nanjing University of Posts and Telecommunications collaborates with Nanjing University of Science and Technology Experimental Primary School to conduct a series of information education courses In the digital age, without network security, there is no technological security; without data security, there is no national security. In … Read more

Detailed Introduction to the Python hashlib Module

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Detailed Introduction to the Python hashlib Module

1. Founding Time and Author Founding Time:<span>hashlib</span> module was first released as part of the Python core library with Python 2.5 in September 2006, replacing the older <span>md5</span> and <span>sha</span> modules. Core Developers: Gregory P. Smith: Core Python developer, main implementer of hashlib Python Security Team: Includes cryptography experts like Christian Heimes Open Source Community … Read more

Introduction to the Botan Library: An Essential Cryptographic Toolbox for C++ Developers

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The Botan library is an open-source cryptographic library primarily designed to provide implementations of cryptographic algorithms, formats, and protocols. It is written in C++11 and is licensed under the Simplified BSD License (a permissive open-source license), allowing for extensive commercial and non-commercial use. The goal of Botan is to become the best choice for encryption … Read more

Code Sharing: C Language Chain Forward Star Template

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#include<stdio.h> #define MAXN 100 #define MAXM 100 int head[MAXN]; int to[MAXM]; int next[MAXM]; int edge_cnt = 0; // Initialize the graph void initGraph(int n){ edge_cnt = 0; for(int i=0; i<n; i++){ head[i] = -1; // -1 indicates no edge } } // Add directed edge u->v (head insertion method) void addEdge(int u, int v){ to[edge_cnt] … Read more

Complete Reproduction and In-Depth Analysis of ASM Crypto Encryption Algorithm

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RCTF 2021 – Complete Reproduction and In-Depth Analysis of ASM Crypto Encryption Algorithm Introduction This article is a complete technical reproduction of the ASM Crypto problem from RCTF 2021. The problem provides an encryption program written in x86 assembly and the encrypted ciphertext, requiring reverse analysis to restore the plaintext. This article will adopt the … Read more

Comprehensive Guide to the Botan Cryptography Library: From Basics to Advanced Applications

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Botan is an open-source cryptography library written in modern C++, providing a rich set of encryption algorithms and security protocol support. Below, I will introduce the main features of Botan 3.10.0 and demonstrate how to use it for common encryption operations through practical code examples. 🔑 Comprehensive Guide to the Botan Cryptography Library: From Basics … Read more

The U.S. Endorses Raqcoin’s Quantum-Resistant Algorithm: Will the Landscape of Cryptocurrency Security Be Redefined?

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The U.S. Endorses Raqcoin's Quantum-Resistant Algorithm: Will the Landscape of Cryptocurrency Security Be Redefined?

1. U.S. Government Endorsement The rise of quantum computing presents unprecedented challenges to traditional encryption. The algorithms that underpin conventional cryptocurrencies are increasingly revealing vulnerabilities in the face of the powerful computing capabilities of quantum computers. At this critical moment, the U.S. has given national-level endorsement to Raqcoin’s quantum-resistant algorithm, a move that has sent … Read more