Replace ASCII (null) value in string (RijndaelManaged)

[daz_oldham]

Hi

I am using the RijndaelManaged encryption method in C#, but when I
decode my string, the byte array is returning several ASCII null values
at the end of my string, which is represented by "\0".

What I would like to know, is how can I get rid of these null values as
obviously I don't want or need them.

Many thanks

Darren

// Code snippet
return Encoding.ASCII.GetString(bytTmp);

 

[cody]

Hi

I am using the RijndaelManaged encryption method in C#, but when I
decode my string, the byte array is returning several ASCII null values
at the end of my string, which is represented by "\0".

What I would like to know, is how can I get rid of these null values as
obviously I don't want or need them.

Many thanks

Darren

// Code snippet
return Encoding.ASCII.GetString(bytTmp);

try to use base64 encoding on the array to retrieve a ascii string.

 

[Jon Skeet [C# MVP]]

I am using the RijndaelManaged encryption method in C#, but when I
decode my string, the byte array is returning several ASCII null values
at the end of my string, which is represented by "\0".

What I would like to know, is how can I get rid of these null values as
obviously I don't want or need them.

You're treating arbitrary binary data as if it were text - it's not.
Use Convert.ToBase64String instead.

 

[daz_oldham]

Hi Jon, Cody

When I try to do this, I am getting the following back ( my string =
"9").

"QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

The encryption clearly uses ASCII encoding, would I be better using
Unicode?

Many thanks

Darren

 

[Jon Skeet [C# MVP]]

When I try to do this, I am getting the following back ( my string =
"9").

"QAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

Yup - that's fairly reasonable.

The encryption clearly uses ASCII encoding, would I be better using
Unicode?

No. Encryption doesn't use ASCII encoding - it converts arbitrary
binary data to arbitrary binary data. Base64 is a safe way of
representing arbitrary binary data as text.

Jon

 

[daz_oldham]

Ah, thanks Jon.

I did a search on RijndaelManaged c# and found loads of implementations
of this, and used another implementation of it - it has done the trick
so I am happy.

Thanks for your help.

Darren