change the asp.net user password while retrieving current password

Question

I'm using the ChangePassword method of membership provider to change the password and one of the requirement before calling the ChangePassword is to retrieve the current password. But I'm getting error: padding is invalid and cannot be removed

below is my web.config:

<system.web>
    < machineKey validationKey="4FD671E39167DFB91A918018007D095E50B7D2971B01AEDE26A7233FD9CC4A470F80689997EC2C7BB515F9D82C8B4D1F3A8495193630B11E8401C96BD0A5A133"
                decryptionKey="ED1555E75C7B91738172E0086456C70B9CAA4C44214FC2B1907123993EA4FA53"
                validation="SHA1"
                decryption="AES"/>
....
< /system.web>

So are you getting the error when calling ChangePassword or when retrieving? — Russell Steen
– Russell Steen, Commented Dec 10, 2010 at 1:19

blowdart · Accepted Answer · 2010-12-10 03:56:53Z

3

You cheat, you reset the password to a known value first.

MembershipUser user = Membership.GetUser();
string generated = user.ResetPassword();
user.ChangePassword(generated, *newPassword*);

answered Dec 10, 2010 at 3:56

blowdart

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