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Questions tagged [rsacryptoserviceprovider]

The RSACryptoServiceProvider object performs asymmetric encryption and decryption using the implementation of the RSA algorithm provided by the cryptographic service provider (CSP).

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How to validate public key xml file?

I have created a public key using RSACryptoServiceProvider in c#. Later in my program I want to store it's content in database. How can I make sure that the file is a true public key. Note: I have checked it's structure against xsd. but I need…
shaghayegh hassanzadeh
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Public key decyption using RSACryptoServiceProvider

is there a way to DECRYPT data using the public key that is get from the RSACryptoServiceProvider, via its ToXmlString(false) method? If i ran the code below, i get an "Error occured while decoding OAEP padding." If i use the private key for…
KiLa
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Get public and private key of an encrypted app.config

I have written a program to encrypt and decrypt appdata in an app.config file. The program is working correctly so I could encrypt app.config like this
Nayana Priyankara
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implementing the 1 out of 2 oblivious transfer protocol in c#

Implementation of 1-2 oblivious transfer protocol for RSA requires a calculation of ]1 (source: rogercortesi.com) and (source: rogercortesi.com) , then the results would be byte[] arrays. How would one perform the addition and the modulo…
Cobe
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RSA Crypto Service Container Private Key goes out of sync

In a client/server model We have a RSACryptoServiceProvider key created using a well known "container name" at the startup code, and set a rule on it to Allow Generic Read, and persist the public key into a database. The clients connecting to the…
kernelman
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ASP app cannot open RSA key container (NTE_BAD_KEYSET error)

Having difficulty making CryptAcquireContext work for a .NET app. I've created the key, but it's throwing error NTE_BAD_KEYSET. The documentation suggests that the trouble is with permissions, but I'm not quite sure who to give permission to. So far…
christok
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RSA KEY Encryption/Decryption Problem

I tried C:\dev>aspnet_regiis -pc "NetFrameworkConfigurationKey" -exp Creating RSA Key container... The RSA key container could not be opened. Failed! and C:\dev>aspnet_regiis -pa "NetFrameworkConfigurationKey" "ASPNET" Adding ACL for…
BKarms
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Window CryptoAPI: Can I choose the public exponent when generating an RSA key pair?

Using the Windows CryptoAPI, is there any way to specify which public exponent to use when generating a new key-pair (ie. 3 instead of 65537)? As a bonus question: how would I access this functionality using .NET RSACryptoServiceProvider? EDIT: My…
Rasmus Faber
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RSACryptoServiceProvider SignHash equivalent in php / openssl?

my understanding is openssl_sign does the same as RSACryptoServiceProvider.SignData is there a openssl (or php) command the does the same as RSACryptoServiceProvider.SignHash?
davidkierz
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Can the data at UseMachineKeyStore be backed up and recovered?

I have the following code: const int PROVIDER_RSA_FULL = 1; const string CONTAINER_NAME = "Example"; CspParameters cspParams; cspParams = new CspParameters(PROVIDER_RSA_FULL); cspParams.KeyContainerName = CONTAINER_NAME; cspParams.Flags =…
Christopher Done
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Problems to import RSA key in other computer

I am creating a little tool for encrypt and decrypt using a pair keys (public and private keys). I export public and private key on my computer and I can encrypt and decrypt files without problems. I have problem when I try decrypt files in other…
Virkof
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Issue validating ASHWID (HardwareToken) in the cloud

I'm trying to validate HardwareToken issued by HardwareIdentification.GetPackageSpecificToken with an azure (.net 4.5) service. I followed the official guidance. But i'm stuck in the very last checking. I can't figure why the signature checking is…
Cyprien Autexier
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Public key extraction from a certificate in C#

How to get private key from a x509 v.3 certificate and store it in a RSACryptoServiceProvider class?
test_user
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Veryifying RSA signature using openssl_public_decrypt failing for .NET signed string

I am attempting to use X509Certificate2 and RSACryptoServiceProvider together with PHP OpenSSL commands to implement two-way mutual security. It all seems to be fine sending a message from PHP to C#, RSACryptoServiceProvider on the .NET server can…
theringostarrs
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How to load file privakey file types is pem

I load private (private.pem) my code is: FileReader fileReader = new FileReader(new File(private.pem)); PEMReader r = new PEMReader(fileReader, new DefaultPasswordFinder("mypass".toCharArray())); try { KeyPair kp = (KeyPair)…
cldo
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