// methods
private void Decode(byte[] data)
{
ASN1 encryptedPrivateKeyInfo = new ASN1(data);
if (encryptedPrivateKeyInfo.Tag != 0x30)
{
throw new CryptographicException("invalid EncryptedPrivateKeyInfo");
}
ASN1 encryptionAlgorithm = encryptedPrivateKeyInfo[0];
if (encryptionAlgorithm.Tag != 0x30)
{
throw new CryptographicException("invalid encryptionAlgorithm");
}
ASN1 algorithm = encryptionAlgorithm[0];
if (algorithm.Tag != 0x06)
{
throw new CryptographicException("invalid algorithm");
}
_algorithm = ASN1Convert.ToOid(algorithm);
// parameters ANY DEFINED BY algorithm OPTIONAL
if (encryptionAlgorithm.Count > 1)
{
ASN1 parameters = encryptionAlgorithm[1];
if (parameters.Tag != 0x30)
{
throw new CryptographicException("invalid parameters");
}
ASN1 salt = parameters[0];
if (salt.Tag != 0x04)
{
throw new CryptographicException("invalid salt");
}
_salt = salt.Value;
ASN1 iterationCount = parameters[1];
if (iterationCount.Tag != 0x02)
{
throw new CryptographicException("invalid iterationCount");
}
_iterations = ASN1Convert.ToInt32(iterationCount);
}
ASN1 encryptedData = encryptedPrivateKeyInfo[1];
if (encryptedData.Tag != 0x04)
{
throw new CryptographicException("invalid EncryptedData");
}
_data = encryptedData.Value;
}
// methods
private void Decode(byte[] data)
{
ASN1 privateKeyInfo = new ASN1(data);
if (privateKeyInfo.Tag != 0x30)
{
throw new CryptographicException("invalid PrivateKeyInfo");
}
ASN1 version = privateKeyInfo[0];
if (version.Tag != 0x02)
{
throw new CryptographicException("invalid version");
}
_version = version.Value[0];
ASN1 privateKeyAlgorithm = privateKeyInfo[1];
if (privateKeyAlgorithm.Tag != 0x30)
{
throw new CryptographicException("invalid algorithm");
}
ASN1 algorithm = privateKeyAlgorithm[0];
if (algorithm.Tag != 0x06)
{
throw new CryptographicException("missing algorithm OID");
}
_algorithm = ASN1Convert.ToOid(algorithm);
ASN1 privateKey = privateKeyInfo[2];
_key = privateKey.Value;
// attributes [0] IMPLICIT Attributes OPTIONAL
if (privateKeyInfo.Count > 3)
{
ASN1 attributes = privateKeyInfo[3];
for (int i = 0; i < attributes.Count; i++)
{
_list.Add(attributes[i]);
}
}
}
