encryption-symmetric

问题 I have searched all this morning but I've found websites where it is said that data is sent through an asymmetric encryption using the TLS protocol Then I found the contrary Please can you tell me which is true? Thanks And does anyone know a guide where it is explained step by step the handshake of tls protocol over https? 回答1: The best answer is that it does both. TLS uses asymmetric encryption to first establish identity of one or both parties. Secondly, it uses asymmetric encryption to

问题 I am getting above mentioned error during a hybrid cryptography implementation. as per https://en.wikipedia.org/wiki/Hybrid_cryptosystem I am just stucked at the last step My code is private void button1_Click(object sender, EventArgs e) { try { CspParameters cspParams = new CspParameters { ProviderType = 1 }; RSACryptoServiceProvider rsaProvider = new RSACryptoServiceProvider(2048, cspParams); string publicKey =lblPublicKey.Text = Convert.ToBase64String(rsaProvider.ExportCspBlob(false));

问题 SigningCredentials on .NET Core is different from .NET 4.0 回答1: The equivalent code in .NET Core would be: var key = Encoding.UTF8.GetBytes(accessKey); var signingKey = new SymmetricSecurityKey(key); var signingCredentials = new SigningCredentials(signingKey, SecurityAlgorithms.HmacSha256); The class names have changed a little, but everything should work the same. Make sure you are using the latest package versions. 来源： https://stackoverflow.com/questions/38089523/signingcredentials-on-net

问题 I was trying encryption/decryption with AES then I tried the CBC & ECB modes I got the same encrypted output from all three ! is this how it goes? it's may not be wrong but I just don't know what to expect . and what's the point of having modes if they all produce the same cipher ? is it time or performance complexity ? can you explain the difference between AES and its cipher modes ? what's the default cipher mode ? or if you can give me any references cuz MSDN is not clear enough thank you

问题 I am looking at the feasibility for using Chrome apps for the front end of some applications I am working on. (As an aside, if anyone has any thoughts on this - put it in the comments) I would be using chrome.socket and would want the connections to be secure so will need RSA and AES encryption that will be compatible with as many backend technology implementations as possible (C#, Java, ...). What I mean by this is the different modes, key-lengths, implementation-specific details... Now I

问题 This is the scenario we have: We have huge encrypted files, in the order of gigabytes that we can decrypt correctly if we read them until the end. The problem arises when we are reading and detect some flag in the file, then we stop reading and call reader.Close(), what happens is that a CryptographicException: "Padding is invalid and cannot be removed." is thrown. I have this small console app that reproduce this behavior, to test it just run it, it will create a file in your C:\ drive and

问题 This is the scenario we have: We have huge encrypted files, in the order of gigabytes that we can decrypt correctly if we read them until the end. The problem arises when we are reading and detect some flag in the file, then we stop reading and call reader.Close(), what happens is that a CryptographicException: "Padding is invalid and cannot be removed." is thrown. I have this small console app that reproduce this behavior, to test it just run it, it will create a file in your C:\ drive and

问题 I have created a MVC WebRole Window Azure application where i upload encrypted files to Azure blob storage using SymmetricAlgorithm (Rijndael) like this Controler>Action is [HttpPost] public ActionResult UploadImage_post(HttpPostedFileBase fileBase) { if (fileBase.ContentLength > 0) { // Retrieve a reference to a container Microsoft.WindowsAzure.StorageClient.CloudBlobContainer blobContainer = _myBlobStorageService.GetCloudBlobContainer(); Microsoft.WindowsAzure.StorageClient.CloudBlob blob =

问题 I need a PHP function, AES256_encode($dataToEcrypt) to encrypt the $data into AES-256 and another one AES256_decode($encryptedData) do the opposite. Does anyone know what code should this functions have? 回答1: Look at the mcrypt module AES-Rijndael example taken from here $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC); $iv = mcrypt_create_iv($iv_size, MCRYPT_DEV_URANDOM); $key = pack('H*', "bcb04b7e103a0cd8b54763051cef08bc55abe029fdebae5e1d417e2ffb2a00a3"); # show key size

问题 I am new to OpenSSL and have theoretical information in SSL protocol . I have task to create a certificate who uses RSA algorithm for symmetric session key exchange and use my own my encryption algorithm called FooSymmetricAlgorithm for symmetric session key. I need a way to tell the browser and web server to use FooSymmetricAlgorithm as symmetric algorithm. I know I can import my root certificate to browser but I think that does not mean I can add my encryption algorithm to browser. My