Top "Cryptography" questions

Encrypt and decrypt a string in C#?

How can I encrypt and decrypt a string in C#?

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Java 256-bit AES Password-Based Encryption

I need to implement 256 bit AES encryption, but all the examples I have found online use a "KeyGenerator" to generate …

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How do you Encrypt and Decrypt a PHP String?

What I mean is: Original String + Salt or Key --> Encrypted String Encrypted String + Salt or Key --> …

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Is it possible to decrypt MD5 hashes?

Someone told me that he has seen software systems that: retrieve MD5 encrypted passwords from other systems; decrypt the encrypted …

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How do you use bcrypt for hashing passwords in PHP?

Every now and then I hear the advice "Use bcrypt for storing passwords in PHP, bcrypt rules". But what is …

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Using AES encryption in C#

I can't seem to find a nice clean example of using AES 128 bit encryption. Does anyone have some sample code?

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How to hash some string with sha256 in Java?

How can I hash some string with sha256 in Java? Does anybody know of any free library for this?

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What data type to use for hashed password field and what length?

I'm not sure how password hashing works (will be implementing it later), but need to create database schema now. I'm …

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Failed to install Python Cryptography package with PIP and setup.py

When I try to install the Cryptography package for Python through either pip install cryptography or by downloading the package …

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Why does SSL handshake give 'Could not generate DH keypair' exception?

When I make an SSL connection with some IRC servers (but not others - presumably due to the server's preferred …

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