DSA Configuration

The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

DSA Configuration Settings

HashSignatureFormat: The format of the HashSignature.

This setting specifies the format of HashSignature when calling Sign. The way the HashSignature parameters are represented can be changed to be interoperable with other implementations. Possible values are:


0 (Concatenated - default)	Compatible with Windows/.NET
1 (ASN)	Compatible with OpenSSL/Mac/iOS

The default value is 0 (Concatenated). This setting is only applicable when calling Sign. When calling VerifySignature the format is automatically determined by the component.

KeySize: The size, in bits, of the secret key.

This specifies the size, in bits, of the secret key. The minimum key size for DSA is 512. The maximum key size is 4096. Note that large values such as 4096 will impact performance. The default value is 1024.

KeyFormat: How the public and private key are formatted.

This setting controls the format of PublicKey and PrivateKey. By default these fields hold PEM formatted public and private key data. When set to 1 (XML) the keys are stored in a XML format. This only affects the values returned by the component; the actual keys remain the same regardless of this setting. Possible values are:

0 (PEM - default)
1 (XML)

The default value is 0 (PEM).

CloseInputStreamAfterProcessing: Determines whether or not the input stream is closed after processing.

Determines whether or not the input stream set by SetInputStream is closed after processing is complete. The default value is True.

Base Configuration Settings


	GUIAvailable: Tells the component whether or not a message loop is available for processing events. In a GUI-based application, long-running blocking operations may cause the application to stop responding to input until the operation returns. The component will attempt to discover whether or not the application has a message loop and, if one is discovered, it will process events in that message loop during any such blocking operation. In some non-GUI applications an invalid message loop may be discovered that will result in errant behavior. In these cases, setting GuiAvailable to false will ensure that the component does not attempt to process external events.
	UseBackgroundThread: Whether threads created by the component are background threads. If set to True, when the component creates a thread the thread's IsBackground property will be explicitly set to True. By default this setting is False.
	UseManagedSecurityAPI: Tells the component whether or not to use the system security libraries or a managed implementation. By default the component will use the system security libraries to perform cryptographic functions. This means calls to unmanaged code will be made. In certain environments this is not desirable. To use a completely managed security implementation set this setting to True. Setting this to True tells the component to use the internal managed implementation instead of using the system's security API. Note that when this value is set the product's system dll is no longer required as a reference, as all unmanaged code is stored in this file.