/// <summary>
/// Decrypt raw data, generally used for decrypting symmetric key material
/// </summary>
/// <param name="rgb">encrypted data</param>
/// <param name="fOAEP">true to use OAEP padding (PKCS #1 v2), false to use PKCS #1 type 2 padding</param>
/// <returns>decrypted data</returns>
public byte[] Decrypt(byte[] rgb, bool fOAEP)
{
ArgumentNullException.ThrowIfNull(rgb);
// Save the KeySize value to a local because it has non-trivial cost.
int keySize = KeySize;
// size check -- must be exactly the modulus size
if (rgb.Length != (keySize / 8))
{
throw new CryptographicException(SR.Cryptography_RSA_DecryptWrongSize);
}
byte[] decryptedKey;
CapiHelper.DecryptKey(SafeKeyHandle, rgb, rgb.Length, fOAEP, out decryptedKey);
return(decryptedKey);
}
/// <summary>
/// Decrypt raw data, generally used for decrypting symmetric key material
/// </summary>
/// <param name="rgb">encrypted data</param>
/// <param name="fOAEP">true to use OAEP padding (PKCS #1 v2), false to use PKCS #1 type 2 padding</param>
/// <returns>decrypted data</returns>
public byte[] Decrypt(byte[] rgb, bool fOAEP)
{
if (rgb == null)
{
throw new ArgumentNullException("rgb");
}
GetKeyPair();
// size check -- must be at most the modulus size
if (rgb.Length > (KeySize / 8))
{
throw new CryptographicException(SR.Format(SR.Cryptography_Padding_DecDataTooBig, Convert.ToString(KeySize / 8)));
}
byte[] decryptedKey = null;
CapiHelper.DecryptKey(_safeKeyHandle, rgb, rgb.Length, fOAEP, out decryptedKey);
return(decryptedKey);
}
/// <summary>
/// Decrypt raw data, generally used for decrypting symmetric key material
/// </summary>
/// <param name="rgb">encrypted data</param>
/// <param name="fOAEP">true to use OAEP padding (PKCS #1 v2), false to use PKCS #1 type 2 padding</param>
/// <returns>decrypted data</returns>
public byte[] Decrypt(byte[] rgb, bool fOAEP)
{
if (rgb == null)
{
throw new ArgumentNullException(nameof(rgb));
}
// Save the KeySize value to a local because it has non-trivial cost.
int keySize = KeySize;
// size check -- must be at most the modulus size
if (rgb.Length > (keySize / 8))
{
throw new CryptographicException(SR.Format(SR.Cryptography_Padding_DecDataTooBig, Convert.ToString(keySize / 8)));
}
byte[] decryptedKey;
CapiHelper.DecryptKey(SafeKeyHandle, rgb, rgb.Length, fOAEP, out decryptedKey);
return(decryptedKey);
}