Found a total of 10000 related content
Can MD5 Encryption Be Decrypted and Reversed?
Article Introduction：MD5 encryption provides irreversible protection for sensitive data. Alternative encryption methods are suggested to enhance security, including the use of a salt before encryption. Adding a salt enhances password protection, making it difficult to de
2024-10-24
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1303
Can Hashed MD5 Data Be Decrypted or Is It Irreversible?
Article Introduction：Encryption and Decryption discuss MD5 hashing, a one-way function that is commonly used to encrypt passwords and sensitive data. The key issue is the inability to decrypt the hashed data, making it crucial to consider alternative encryption approache
2024-10-24
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759
Java Cryptography Best Practices and Pitfalls
Article Introduction：Using strong encryption algorithms and secure management of keys is the core of Java application encryption. 1. Priority is given to AES-128 or AES-256 symmetric encryption, RSA-2048 or ECC asymmetric encryption and SHA-256 hashing algorithms to avoid unsafe methods such as ECB and MD5; 2. Through JavaKeyStore or external KMS, hard coding is prohibited, regular rotation is prohibited, and GCM mode security is ensured with IV uniqueness; 3. Correctly use encryption libraries, such as Base64 encoding output, handling exceptions, and registering BouncyCastle providers; 4. Ensure that the JVM supports the corresponding key length, install unlimited policy files, and comply with GDPR, HIPAA and other compliance requirements to meet FIPS
2025-07-17
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882
Python Cryptography Library Usage
Article Introduction：The Python encryption library is used as follows: 1. Symmetric encryption is recommended to use the Fernet module in the cryptography library. The key is generated by generate_key() and the data is encrypted and decrypted with encrypt()/decrypt(); 2. The hashlib library can be used to calculate hashlib, and the SHA256 algorithm is preferred and the hash value is obtained through hexdigest(). Pay attention to avoiding MD5 and SHA1; 3. Asymmetric encryption can use the RSA function of cryptography to generate key pairs through generate_private_key(), and use public key encryption and private key decryption. Note that filling schemes such as OAEP must be used and only suitable
2025-07-17
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527
How to verify file integrity with UniApp download files
Article Introduction：This article details methods for verifying the integrity of downloaded files in UniApp. It emphasizes checksum verification (MD5, SHA-1, SHA-256) using JavaScript libraries like js-sha256 or crypto-js as UniApp lacks built-in functionality. Additio
2025-03-04
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867
How to implement data encryption with JavaScript?
Article Introduction：Using JavaScript to implement data encryption can use the Crypto-JS library. 1. Install and introduce the Crypto-JS library. 2. Use the AES algorithm for encryption and decryption to ensure that the same key is used. 3. Pay attention to the secure storage and transmission of keys. It is recommended to use CBC mode and environment variables to store keys. 4. Consider using WebWorkers when you need high performance. 5. When processing non-ASCII characters, you need to specify the encoding method.
2025-05-23
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1221
Go Cryptography Best Practices and Pitfalls
Article Introduction：Use of the standard library is preferred, key management should be cautious, and encryption mode selection is important. In Go language, standard libraries under crypto/package such as crypto/tls, crypto/aes, crypto/rand, etc. should be used to avoid implementing encryption algorithms by themselves or using unsafe third-party libraries; keys need to be generated using crypto/rand, avoid hard-coded and injected through environment variables or key management systems, and be replaced regularly at the same time; it is recommended to use AES-GCM and other AEAD modes to ensure data integrity and tamper-proof, avoid ECB or CBC-HMAC combination; in addition, avoid using MD5/SHA1 hash and base64 encoding as encryption means, and ensure that all network transmissions use TL
2025-07-23
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598
Describe the secure way to handle user passwords in php.
Article Introduction：The safest way to handle user passwords is to use encrypted storage rather than plaintext saving. 1. Use PHP's password_hash() function to encrypt passwords, and the Bcrypt algorithm is used by default, without manually specifying salt values; 2. Use password_verify() to compare constant time during login verification to prevent timing attacks; 3. You can improve the encryption strength by adjusting the cost parameters, while paying attention to performance balance; 4. If you need to upgrade the algorithm, you can use password_needs_rehash() to migrate to Argon2 and other safer algorithms; 5. Avoid using md5, sha1, crypt or custom encryption logic to eliminate plaintext or unified salt value storage. Make sure the password is in every step
2025-07-10
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858
Go and WebAssembly (Wasm) Integration
Article Introduction：Go can be compiled into WebAssembly to run in the browser, achieving efficient interaction with JavaScript, and is suitable for scenarios such as high-performance computing. The specific steps include: 1. Set up GOOS and GOARCH and compile and generate .wasm files; 2. Use wasm_exec.js to bridge Go and JS environment and load and execute in HTML; 3. Use the syscall/js package to realize Go calling JS functions and registering functions for JS calls; 4. Applicable to high-performance demand scenarios such as audio and video encoding, existing Go back-end multiplexing, encryption operations, and cross-platform toolchain.
2025-07-19
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507
What are Web Workers and why would you use them?
Article Introduction：WebWorker is a multi-threaded mechanism provided by the browser, which is used to run JavaScript code in the background thread to avoid blocking the main thread. 1. It solves the problem of page stuttering and moves time-consuming tasks such as data encryption and image processing to the background to execute. 2. Improve user experience and enable users to interact smoothly. 3. Support complex front-end logic to achieve efficient computing. Usage process: Create an independent JS file, instantiate the Worker in the main thread, send a message with postMessage(), and receive the result onmessage. Applicable scenarios include long-term tasks, big data processing, image processing and encryption tasks, but are not suitable for lightweight operations or frequent access to the DOM.
2025-06-28
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238
Frontend Development with WebAssembly for CPU-Intensive Tasks
Article Introduction：WebAssembly (WASM) is a binary format that runs in a browser, suitable for CPU-intensive tasks. The reasons include: 1. Fast execution speed and close to native code; 2. Supports multiple system-level languages such as Rust and C; 3. Runs in a secure sandbox; 4. Cross-platform compatibility. The key steps to integrate WASM into front-end projects are: 1. Select toolchains such as Rust and wasm-pack; 2. Write and export Rust functions; 3. Compile into .wasm files; 4. Load and call them on the front-end. Applicable scenarios include pure computing tasks such as image processing, encryption, data compression, etc., and the performance can be 5 to 10 times higher than JS. However, tasks such as DOM operations that rely on browser APIs should still use JS
2025-07-19
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454
Using Web Workers for multithreading in JavaScript
Article Introduction：WebWorkers is a way to implement multi-threading in JavaScript, which avoids page stuttering by moving time-consuming tasks out of the main thread. 1. It is a browser API, which allows scripts to be run in the background thread, without directly operating the DOM, but communicates through postMessage and onmessage; 2. Common types include DedicatedWorker, SharedWorker and ServiceWorker, which are suitable for single page calls, multi-script sharing and network proxy scenarios respectively; 3. When using it, you need to create independent JS files and instantiate them through newWorker(). Data delivery depends on the message mechanism and is restricted by structured cloning; 4. Applicable scenarios include data encryption,
2025-07-04
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433
Web Workers for Offloading Heavy Computations
Article Introduction：WebWorkers is a multi-threaded mechanism of the browser, used to move time-consuming tasks out of the main thread to improve page response speed. It is suitable for CPU-intensive tasks such as data encryption, image processing, and large-scale computing, but cannot operate the DOM or access window/document objects. When using it, you need to create an independent JS file as a Worker script and communicate through postMessage/onmessage. Suitable tasks include data analysis, game physics engine, real-time algorithm calculation, etc., but attention should be paid to homologous restrictions, messaging overhead and avoiding frequent creation of Workers. The rational use of WebWorkers can significantly optimize application performance.
2025-07-21
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