rijndaelmanaged

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How can I change an encryption key and still be able to decrypt old data?

I would need to create a symmetric key in C# and use it to encrypt a string, which I would eventually store in a database. I would use the AES mechanism in .Net to achieve this. I would use the开发者_[详细]

2023-04-08 14:00 分类：问答
Rijndael: same string, different results

We had a small desktop app that needs to be provided as a web feature now (.Net). This app contains some code for encryption and uses Rijndael classes from .Net framework. The code accepts an input st[详细]

2023-03-26 03:56 分类：问答
C# AES Rijndael - detecting invalid passwords

I\'m using Rijndael to encrypt some sensitive data in my program. When the user enters an incorrect password, most of 开发者_如何学Gothe time a CryptographicException is thrown with the message \"Pad[详细]

2023-03-01 17:33 分类：问答
Get password from a known key-iv-combination (RijndaelManaged in C#)

Is it possible to \"calculate\" a valid password string when the Key开发者_运维问答 and the IV (as strings) for a RijndaelManaged-Key are known?No it should not be possible. It depends which key deriv[详细]

2023-02-21 16:58 分类：问答
Using RijndaelManaged encryption in Silverlight

I\'m implementing a webservice client that is required to encrypt the request using 128-bits Rijndael. Because the RijndaelManaged class doesn\'t exist in Silverlight, I\'ve followed the advice here:[详细]

2023-02-18 12:58 分类：问答
RijndaelManaged Decryption - How can I remove the padding /0 gracefully?

How can I remove the padding from a decrypted string? I\'m using RijndaelManaged provider to encrypt and decrypt. When I decrypt there are several /0/0/0/0/0/0 at the end of the string. My question is[详细]

2023-02-16 15:53 分类：问答
Is it safe to use Rijndael.Create() instead of new RijndaelManaged()

I\'ve read some on this topic, but I\'m still not 100% comfortable with the answers I see. When you create a cryptographic algorithm using Rijndael.Create(), you get an object of type RijndaelManaged[详细]

2023-02-03 18:43 分类：问答
Is salting values an essential good practice with Rijndael or AES encryption?

I\'ve implemented an encryption function using the Rijndael/AES encryption provider in .NET.My \"understanding\" of the algorithm suggests that as long as the Key and IV aren\'t compromised then the d[详细]

2023-02-03 00:23 分类：问答
how to generate the same key when using crypto c# 4.0

hi im trying to encrypt and decrypt string value... i made it by using manual key like... private static byte[] _salt = Encoding.ASCII.GetBytes(\"123456789abcdefg\");[详细]

2023-01-27 04:28 分类：问答
Using Rijndael encryption for large files

I\'m in a situation where I need to encrypt / decrypt a file of n length securely, ideally using Rijndael, but definitely at 256bit encryption.[详细]

2023-01-09 17:47 分类：问答