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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1293
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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747
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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870
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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506
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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861
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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1189
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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855
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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236
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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431
Dave The Diver: How To Catch Spider Crabs
Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w
2025-01-10
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806
Prepare for Interview Like a Pro with Interview Questions CLI
Article Introduction：Prepare for Interview Like a Pro with Interview Questions CLI
What is the Interview Questions CLI?
The Interview Questions CLI is a command-line tool designed for JavaScript learners and developers who want to enhance their interview
2025-01-10
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