static void SignVerifyTest(ECDomainNames domainName)
{
int repeat = 5;
for (int i = 0; i < repeat; i++)
{
ECDSA ecdsa = new ECDSA(domainName);
byte[] pubKey = ecdsa.Parameters.PublicKey;
byte[] hash = RNG.GetBytes(ecdsa.KeySize >> 3);
byte[] sign = ecdsa.SignHash(hash);
ecdsa = new ECDSA(domainName);
ecdsa.Parameters.PublicKey = pubKey;
Assert.IsTrue(ecdsa.VerifyHash(hash, sign), "Success Test " + domainName.ToString());
sign[0]++;
Assert.IsFalse(ecdsa.VerifyHash(hash, sign), "Failure Test " + domainName.ToString());
}
}
private void btnKeyGenerate_Click(object sender, EventArgs e)
{
ECDomainNames domain = (ECDomainNames)cbKeyType.SelectedIndex;
ECDSA dsa = new ECDSA(domain);
string domainName = domain.ToString().Substring(4);
byte[] privateKeyBytes = dsa.Parameters.PrivateKey;
txtGeneratedKey.Text = ToPrivateKeyString(privateKeyBytes, txtGeneratedKeyPass.Text, domain);
string publicKey = Convert.ToBase64String(dsa.Parameters.ExportPublicKey(domain != ECDomainNames.secp224r1 ? true : false));
txtGeneratedPublicKey.Text = domainName + "=" + publicKey;
}
string ToPrivateKeyString(byte[] privateKey, string passphrase, ECDomainNames domain)
{
string domainName = domain.ToString().Substring(4);
if (passphrase.Length > 0)
{
byte[] pass = ComputeHash(new SHA256Managed(), Encoding.UTF8.GetBytes(txtGeneratedKeyPass.Text), true);
byte[] iv = ComputeHash(new SHA1Managed(), Encoding.UTF8.GetBytes(txtGeneratedKeyPass.Text), true);
Array.Resize <byte> (ref iv, 128 >> 3);
string encType = null;
SymmetricAlgorithm algo = null;
switch (cbPassEncryptType.SelectedIndex)
{
case 0:
encType = "camellia256";
algo = new CamelliaManaged();
break;
case 1:
encType = "rijndael256";
algo = new openCrypto.RijndaelManaged();
break;
default:
throw new CryptographicException("暗号化の種類を認識できません");
}
byte[] encrypted = Encrypt(algo, CipherMode.CBC, pass, iv, privateKey);
string privateKeyText = Convert.ToBase64String(encrypted);
return(encType + "=" + domainName + "=" + privateKeyText);
}
else
{
string privateKeyText = Convert.ToBase64String(privateKey);
return(domainName + "=" + privateKeyText);
}
}
static void Validate(ECDomainNames name)
{
Assert.IsTrue(ECDomains.GetDomainParameter(name).Validate(), name.ToString());
}
string ToPrivateKeyString (byte[] privateKey, string passphrase, ECDomainNames domain)
{
string domainName = domain.ToString ().Substring (4);
if (passphrase.Length > 0) {
byte[] pass = ComputeHash (new SHA256Managed (), Encoding.UTF8.GetBytes (txtGeneratedKeyPass.Text), true);
byte[] iv = ComputeHash (new SHA1Managed (), Encoding.UTF8.GetBytes (txtGeneratedKeyPass.Text), true);
Array.Resize<byte> (ref iv, 128 >> 3);
string encType = null;
SymmetricAlgorithm algo = null;
switch (cbPassEncryptType.SelectedIndex) {
case 0:
encType = "camellia256";
algo = new CamelliaManaged ();
break;
case 1:
encType = "rijndael256";
algo = new openCrypto.RijndaelManaged ();
break;
default:
throw new CryptographicException ("暗号化の種類を認識できません");
}
byte[] encrypted = Encrypt (algo, CipherMode.CBC, pass, iv, privateKey);
string privateKeyText = Convert.ToBase64String (encrypted);
return encType + "=" + domainName + "=" + privateKeyText;
} else {
string privateKeyText = Convert.ToBase64String (privateKey);
return domainName + "=" + privateKeyText;
}
}
void PointCompressTest (ECDomainNames name, int repeats)
{
ECDomainParameters domain = ECDomains.GetDomainParameter (name);
PointCompressTest ((int)domain.Bits, domain.Group, domain.G, repeats, name.ToString ());
}
void PointCompressTest(ECDomainNames name, int repeats)
{
ECDomainParameters domain = ECDomains.GetDomainParameter(name);
PointCompressTest((int)domain.Bits, domain.Group, domain.G, repeats, name.ToString());
}
static void Validate (ECDomainNames name)
{
Assert.IsTrue (ECDomains.GetDomainParameter (name).Validate (), name.ToString ());
}
static void SignVerifyTest (ECDomainNames domainName)
{
int repeat = 5;
for (int i = 0; i < repeat; i ++) {
ECDSA ecdsa = new ECDSA (domainName);
byte[] pubKey = ecdsa.Parameters.PublicKey;
byte[] hash = RNG.GetBytes (ecdsa.KeySize >> 3);
byte[] sign = ecdsa.SignHash (hash);
ecdsa = new ECDSA (domainName);
ecdsa.Parameters.PublicKey = pubKey;
Assert.IsTrue (ecdsa.VerifyHash (hash, sign), "Success Test " + domainName.ToString ());
sign[0]++;
Assert.IsFalse (ecdsa.VerifyHash (hash, sign), "Failure Test " + domainName.ToString ());
}
}