/// <summary>
/// Return a copy of the passed in secret key ring, with the master key and sub keys encrypted
/// using a new password and the passed in algorithm.
/// </summary>
/// <param name="ring">The <c>PgpSecretKeyRing</c> to be copied.</param>
/// <param name="oldPassPhrase">The current password for key.</param>
/// <param name="newPassPhrase">The new password for the key.</param>
/// <param name="newEncAlgorithm">The algorithm to be used for the encryption.</param>
/// <param name="rand">Source of randomness.</param>
public static PgpSecretKeyRing CopyWithNewPassword(
PgpSecretKeyRing ring,
char[] oldPassPhrase,
char[] newPassPhrase,
SymmetricKeyAlgorithmTag newEncAlgorithm,
SecureRandom rand)
{
IList newKeys = Platform.CreateArrayList(ring.keys.Count);
foreach (PgpSecretKey secretKey in ring.GetSecretKeys())
{
newKeys.Add(PgpSecretKey.CopyWithNewPassword(secretKey, oldPassPhrase, newPassPhrase, newEncAlgorithm, rand));
}
return(new PgpSecretKeyRing(newKeys, ring.extraPubKeys));
}
