/// <summary>
/// Decrypts the configuration string.
/// </summary>
/// <param name="cloudMediaContext">The cloud media context.</param>
/// <param name="encryptionKeyId">The encryption key id.</param>
/// <param name="initializationVector">The initialization vector.</param>
/// <param name="encryptedConfiguration">The encrypted configuration.</param>
/// <returns>The decrypted configuration.</returns>
internal static string DecryptConfigurationString(CloudMediaContext cloudMediaContext, string encryptionKeyId, string initializationVector, string encryptedConfiguration)
{
if (cloudMediaContext == null)
{
throw new ArgumentNullException("cloudMediaContext");
}
if (string.IsNullOrEmpty(encryptionKeyId))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "encryption key identifier"), "encryptionKeyId");
}
if (string.IsNullOrEmpty(initializationVector))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "initialization vector"), "initializationVector");
}
if (string.IsNullOrEmpty(encryptedConfiguration))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "encrypted configuration"), "encryptedConfiguration");
}
string returnValue;
Guid keyId = EncryptionUtils.GetKeyIdAsGuid(encryptionKeyId);
byte[] iv = Convert.FromBase64String(initializationVector);
IContentKey configKey = cloudMediaContext.ContentKeys.Where(c => c.Id == encryptionKeyId).Single();
byte[] contentKey = configKey.GetClearKeyValue();
using (ConfigurationEncryption configEnc = new ConfigurationEncryption(keyId, contentKey, iv))
{
returnValue = configEnc.Decrypt(encryptedConfiguration);
}
return(returnValue);
}
/// <summary>
/// Decrypts the configuration string.
/// </summary>
/// <param name="cloudMediaContext">The cloud media context.</param>
/// <param name="encryptionKeyId">The encryption key id.</param>
/// <param name="initializationVector">The initialization vector.</param>
/// <param name="encryptedConfiguration">The encrypted configuration.</param>
/// <returns>The decrypted configuration.</returns>
internal static string DecryptConfigurationString(MediaContextBase cloudMediaContext, string encryptionKeyId, string initializationVector, string encryptedConfiguration)
{
if (cloudMediaContext == null)
{
throw new ArgumentNullException("cloudMediaContext");
}
if (string.IsNullOrEmpty(encryptionKeyId))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "encryption key identifier"), "encryptionKeyId");
}
if (string.IsNullOrEmpty(initializationVector))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "initialization vector"), "initializationVector");
}
if (string.IsNullOrEmpty(encryptedConfiguration))
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture, StringTable.ErrorArgCannotBeNullOrEmpty, "encrypted configuration"), "encryptedConfiguration");
}
string returnValue;
Guid keyId = EncryptionUtils.GetKeyIdAsGuid(encryptionKeyId);
byte[] iv = Convert.FromBase64String(initializationVector);
IContentKey configKey = cloudMediaContext.ContentKeys.Where(c => c.Id == encryptionKeyId).Single();
byte[] contentKey = configKey.GetClearKeyValue();
using (ConfigurationEncryption configEnc = new ConfigurationEncryption(keyId, contentKey, iv))
{
returnValue = configEnc.Decrypt(encryptedConfiguration);
}
return returnValue;
}
