/// <summary>
/// Encrypts string
/// Size of data cannot be longer than the key used
/// </summary>
/// <param name="data">Data to encrypt, cannot be larger than the key used</param>
/// <param name="key">Key to use for encryption</param>
/// <returns>Encrypted data as string</returns>
public static string Encrypt(string data, RsaPublicKey key)
{
byte[] bytes = Encoding.UTF8.GetBytes(data);
byte[] encrypted = Encrypt(bytes, key);
return(Convert.ToBase64String(encrypted).BeautifyBase64());
}
/// <summary>
/// Encrypts array of bytes
/// Size of data cannot be longer than the key used
/// </summary>
/// <param name="data">Data to encrypt, cannot be larger than the key used</param>
/// <param name="key">Key to use for encryption</param>
/// <returns>Encrypted data as byte array</returns>
public static byte[] Encrypt(byte[] data, RsaPublicKey key)
{
using (var rsa = RSA.Create())
{
var parms = key.GetParameters();
rsa.KeySize = parms.Modulus.Length * 8;
rsa.ImportParameters(parms);
return(rsa.Encrypt(data, RSAEncryptionPadding.OaepSHA1));
}
}
/// <summary>
/// Constructor, accepts RSAParameters
/// </summary>
/// <param name="rsaParams">RSA parameters</param>
public RsaKeyPair(RSAParameters rsaParams)
{
PublicKey = new RsaPublicKey(rsaParams);
PrivateKey = new RsaPrivateKey(rsaParams);
}
/// <summary>
/// Constructor accepts private key
/// </summary>
/// <param name="privateKey">Private key</param>
public RsaKeyPair(RsaPrivateKey privateKey)
{
PrivateKey = privateKey ?? throw new System.ArgumentNullException(nameof(privateKey));
PublicKey = new RsaPublicKey(privateKey);
}