public-key

I have two AsymmetricAlgorithm objects that contain an RSA Private and RSA Public key. The private key was retrieved out of the Windows-MY keystore and the Public key from a user's certificate. How can I use these keys along with RSACryptoServiceProvider to encrypt data using the RSA algorithm in C#? In other words, how can I specify that I want to use keys that I already have? #region "RSA Encrypt/Decrypt" public string RSAEncrypt(string str, string publicKey) { //---Creates a new instance of RSACryptoServiceProvider--- try { RSACryptoServiceProvider RSA = new RSACryptoServiceProvider(); //--

I am trying to get my head around public key encryption using the openssl implementation of rsa in C++. Can you help? So far these are my thoughts (please do correct if necessary) Alice is connected to Bob over a network Alice and Bob want secure communications Alice generates a public / private key pair and sends public key to Bob Bob receives public key and encrypts a randomly generated symmetric cypher key (e.g. blowfish) with the public key and sends the result to Alice Alice decrypts the ciphertext with the originally generated private key and obtains the symmetric blowfish key Alice and

I'm doing publicKey.getEncoded(), then appending "ssh-rsa" to the front, then base64 encoding it. Then I add the SSH2 header/footer. But it won't decode... erickson Java public keys are encoded as a standard X.509 SubjectPublicKeyInfo structure. SSH2 uses its own simple format. Base-64 encode the result of the encode method shown below, and affix the necessary SSH2 header and footer. public static byte[] encode(RSAPublicKey key) throws IOException { ByteArrayOutputStream buf = new ByteArrayOutputStream(); byte[] name = "ssh-rsa".getBytes("US-ASCII"); write(name, buf); write(key

This question already has an answer here: Whose key is used to encrypt a HTTPS response? 3 answers What I understand about RSA is that Alice can create a public and a private key combination, and then send the public key over to Bob. And then afterward Bob can encrypt something using the public key and Alice will use the public and private key combo to decrypt it. However, how can Alice encrypt something to be sent over to Bob? How would Bob decrypt it? I ask because I'm curious how when I log onto my banking site, my bank sends me data such as my online statements. How does my browser decrypt

What is the utility of .p12 file/certificate? I am not getting any correct definition when searching the internet: In one site I got "it stores server side certificates along with intermediate certificates and private key in one file. Its mostly used in Windows Machine" In another site i got "it binds a organizations public key with its name. My question is whether its public key or private key which is included in the .p12 certificate. The .p12 contains both the private and the public key, and also information about the owner (name, email address, etc. ) all being certified by a third party.

I was trying to extract RES public key from the file below -----BEGIN CERTIFICATE----- MIIGwTCCBamgAwIBAgIQDlV4zznmQiVeF45Ipc0k7DANBgkqhkiG9w0BAQUFADBmMQswCQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMRkwFwYDVQQLExB3d3cuZGlnaWNlcnQuY29tMSUwIwYDVQQDExxEaWdpQ2VydCBIaWdoIEFzc3VyYW5jZSBDQS0zMB4XDTEyMTAzMDAwMDAwMFoXDTE1MTEwNDEyMDAwMFowgYIxCzAJBgNVBAYTAlVTMQ4wDAYDVQQIEwVUZXhhczEQMA4GA1UEBxMHSG91c3RvbjEpMCcGA1UEChMgVmFsZXJ1cyBDb21wcmVzc2lvbiBTZXJ2aWNlcywgTFAxCzAJBgNVBAsTAklUMRkwFwYDVQQDDBAqLnZhbGVydXMtY28uY29tMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1GR2NKV9GwVHBtpvgBUdVVbd6qeh6aKOS