CryptoProvider.CanDecrypt Property
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Gets a value that indicates whether the user has rights to decrypt.
public:
property bool CanDecrypt { bool get(); };
public bool CanDecrypt { get; }
member this.CanDecrypt : bool
Public ReadOnly Property CanDecrypt As Boolean
Property Value
true
if the UseLicense grants the user rights to decrypt; otherwise, false
.
Examples
The following example shows how to use the CanDecrypt property to determine if decryption is allowed.
ShowStatus(" Binding UseLicense with the SecureEnvironment" +
"\n to obtain the CryptoProvider.");
CryptoProvider cryptoProvider = useLicense.Bind(_secureEnv);
ShowStatus(" Obtaining BoundGrants.");
ReadOnlyCollection<ContentGrant> grants =
cryptoProvider.BoundGrants;
rightsBlockTitle.Text = "Rights - " + Filename(useLicenseFile);
rightsBlock.Text = "GRANTS LIST\n-----------------\n";
foreach (ContentGrant grant in grants)
{
rightsBlock.Text += "USER: " + grant.User.Name + " [" +
grant.User.AuthenticationType + "]\n";
rightsBlock.Text += "RIGHT: " + grant.Right.ToString() + "\n";
rightsBlock.Text += " From: " + grant.ValidFrom + "\n";
rightsBlock.Text += " Until: " + grant.ValidUntil + "\n";
}
if (cryptoProvider.CanDecrypt == true)
ShowStatus(" Decryption granted.");
else
ShowStatus(" CANNOT DECRYPT!");
ShowStatus(" Binding UseLicense with the SecureEnvironment" & vbLf & " to obtain the CryptoProvider.")
Dim cryptoProvider As CryptoProvider = useLicense.Bind(_secureEnv)
ShowStatus(" Obtaining BoundGrants.")
Dim grants As ReadOnlyCollection(Of ContentGrant) = cryptoProvider.BoundGrants
rightsBlockTitle.Text = "Rights - " & Filename(useLicenseFile)
rightsBlock.Text = "GRANTS LIST" & vbLf & "-----------------" & vbLf
For Each grant As ContentGrant In grants
rightsBlock.Text &= "USER: " & grant.User.Name & " [" & grant.User.AuthenticationType & "]" & vbLf
rightsBlock.Text &= "RIGHT: " & grant.Right.ToString() & vbLf
rightsBlock.Text &= " From: " & grant.ValidFrom & vbLf
rightsBlock.Text &= " Until: " & grant.ValidUntil & vbLf
Next grant
If cryptoProvider.CanDecrypt = True Then
ShowStatus(" Decryption granted.")
Else
ShowStatus(" CANNOT DECRYPT!")
End If
Remarks
CanDecrypt returns true
if the UseLicense bound to this CryptoProvider grants the user read access rights such as View, Edit, Print, or Owner.
Applies to
See also
.NET
피드백
https://aka.ms/ContentUserFeedback
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