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Questions tagged [symmetric-key]

algorithms are algorithms for cryptography that use the same cryptographic keys for both encryption of plaintext and decryption of ciphertext. The keys may be identical or there may be a simple transformation to go between the two keys.

as stated in Wikipedia.

Since this tag is used in its general meaning, it would be a good idea to use one or more tags too, to describe your specific case better.

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Generating a symmetric key in php

Im trying to generate a symmetric key, which i can use to both encrypt and decrypt a message with the same key, in php. I've made my way through the php documentation below but can only find public/private key…
J.Bet-Eivazi
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Encryption (Symmetric key) lib

I have been reading a little bit about Encryption. I'm currently in a project where I'll need to Encrypt/Decrypt data based on a key (user password), but the problem is: - I'll need to encrypt/decrypt in several client applications built with…
Engenheiros MEorga
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RijndaelManaged Key generation

I need to encrypt data and store it in a file and later be able to decrypt it back. For this I am using RijndaelManaged class. Now I do not want to keep the key hardcoded in the code. After some googling I found this method - Here the key is…
Happy Go Lucky
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Generate HMAC_SHA256 Signature in JavaCard Applet

I am trying to sign a message which contains in inBuffer byte array using my own derived key S (also byte array). The snippet of the function from javacard (jc) applet module is given below. I am using javacard2.2.2 library for developing jc applet.…
Ankit Singh
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how to wrap/store the key of TripleDESCryptoServiceProvider

I'm using DES encryption, and I want to store the key of TripleDESCryptoServiceProvider. But the key consists of (Key + IV), I was trying to save them in an XML file using XmlTextWriter Convert.ToBase64String(...) but there was an exception due…
ala
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InCorrect output using Rfc2898DeriveBytes for password hashing

I am certainly sure i am doing something wrong here. Using .net implementation of the algorithm i hash the password to store in database along with the salt used to hash. On validating the same password with the existing hash does not match.Here is…
Deeptechtons
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How to import Symmetric key to thales HSM?

As title, how to import Symmetric key(Triple DES key) to thales HSM? Just like aws HSM, it can use imSymKey command. https://docs.aws.amazon.com/cloudhsm/latest/userguide/key_mgmt_util-imSymKey.html Please provide me code and example, thanks a lot.
beehuang
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SymmetricAlgorithm GenerateKey with 128 bit

I have the following code to create a new SymmetricAlgorithm: internal static SymmetricAlgorithm CreateSymmetricAlgorithm() { var algorithm = new RijndaelManaged { KeySize = 128, Padding = PaddingMode.ISO10126, Mode =…
Tomtom
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