Enterprise Library Test Guide - Willy .Net

50
Enterprise Library Test Guide
Code test case Implemented? Feature that is implemented
Verify that the
application block
can either use an
absolute path or
a relative path to
read the key file.
Yes
In the configuration source, the ProtectedKeyFilename
property supports both relative and absolute paths.
This is shown in the following configuration example.
Verify that the
application block
validates the input
at all the entry
points, such as
the Cryptographer
façade.
Verify that the
application block
reads the symmetric
key only once
from the input
stream and then
caches it so that
it can be used for
the cryptography
operations.
Verify that the
symmetric key is
cached in memory
in a thread safe
manner.
Yes
Yes
Yes
The following code is an example of how the application
block checks whether the input is valid. If the
input is invalid, the application block throws an exception.
public static string DecryptSymmetric(string
symmetricInstance, string ciphertextBase64)
{
if (string.IsNullOrEmpty(symmetricInstance))
throw new ArgumentException(…);
if (string.IsNullOrEmpty(ciphertextBase64))
throw new ArgumentException(…);
}
The KeyManager.Read method reads an encrypted
key from the input stream and then caches it. This is
shown in the following code example.
public static ProtectedKey Read(…)
{
if (cache[completeFileName] != null)
return cache[completeFileName];
}
The ProtectedKeyCache class locks the cache before
it stores the key. This is shown in the following code
example.
public ProtectedKey this[string keyFileName]
{
set
{
lock (cache)
{
cache[keyFileName] = value;
}
}
}