public static SshKeyPair Generate(int bits)
{
SshKey key = new SshKey();
int numBits = bits;
int exponent = 65537;
bool success = key.GenerateRsaKey(numBits, exponent);
var sshKeyPair = new SshKeyPair(key.ToOpenSshPublicKey(), key.ToOpenSshPrivateKey(false));
if (!success)
{
Generate(bits);
}
return(sshKeyPair);
}
public static string Generate(string name, string folder, out string password, out bool error)
{
error = false;
SshKey key = new SshKey();
bool success;
int numBits;
int exponent;
string exportedKey;
bool exportEncrypted;
password = GenPassword();
string fullPath = $"{folder}\\{name}";
// numBits may range from 384 to 4096. Typical values are
// 1024 or 2048. (must be a multiple of 64)
// A good choice for the exponent is 65537. Chilkat recommends
// always using this value.
numBits = 2048;
exponent = 65537;
success = key.GenerateRsaKey(numBits, exponent);
if (success != true)
{
error = true;
return(string.Empty);
}
// Note: Generating a public/private key pair is CPU intensive
// and may take a short amount of time (more than few seconds,
// but less than a minute).
string exportFile = string.Empty;
string extension = ".pem";
int i = 0;
do
{
if (i == 0)
{
exportFile = fullPath + extension;
}
else
{
exportFile = fullPath + $"-{i}{extension}";
}
i++;
}while (FoldersInit.CheckIfFileExist(exportFile));
// Export with encryption to OpenSSH private key format:
key.Password = password;
exportEncrypted = true;
exportedKey = key.ToOpenSshPrivateKey(exportEncrypted);
success = key.SaveText(exportedKey, exportFile);
extension = ".ppk";
i = 0;
do
{
if (i == 0)
{
exportFile = fullPath + extension;
}
else
{
exportFile = fullPath + $"-{i}{extension}";
}
i++;
}while (FoldersInit.CheckIfFileExist(exportFile));
// Export the RSA private key to encrypted PuTTY format:
key.Password = password;
exportEncrypted = true;
exportedKey = key.ToPuttyPrivateKey(exportEncrypted);
success = key.SaveText(exportedKey, exportFile);
// ----------------------------------------------------
// Now for the public key....
// ----------------------------------------------------
// The Secure Shell (SSH) Public Key File Format
// is documented in RFC 4716.
extension = "_pubkey_rfc4716.pub";
i = 0;
do
{
if (i == 0)
{
exportFile = fullPath + extension;
}
else
{
exportFile = fullPath + $"-{i}{extension}";
}
i++;
}while (FoldersInit.CheckIfFileExist(exportFile));
exportedKey = key.ToRfc4716PublicKey();
success = key.SaveText(exportedKey, exportFile);
// OpenSSH has a separate public-key file format, which
// is also supported by Chilkat SshKey:
extension = "_pubkey_openSsh.pub";
i = 0;
do
{
if (i == 0)
{
exportFile = fullPath + extension;
}
else
{
exportFile = fullPath + $"-{i}{extension}";
}
i++;
}while (FoldersInit.CheckIfFileExist(exportFile));
exportedKey = key.ToOpenSshPublicKey();
success = key.SaveText(exportedKey, exportFile);
return(exportedKey);
}