Aes Configuration

This setting optionally specifies additional authentication data. The data specified must be hex encoded. This is only applicable when CipherMode is set to 6 (cmGCM). This may be set prior to calling Encrypt or Decrypt. Note that AAD data is authenticated but not encrypted, so it is not included in OutputMessage

This setting is only applicable when CipherMode is set to 6 (cmGCM). This is populated with a hex encoded value after calling Encrypt. It must be specified with a hex encoded value before calling Decrypt.

This setting is only applicable when CipherMode is set to 6 (cmGCM). This may be set before calling Encrypt. The default value is 96. Valid values are

• 96 (default)
• 104
• 112
• 120
• 128

This setting controls whether AuthTag is appended to the cipher text. This may be useful in cases where the other party knows to look for the authentication tag at the end of the data. The default value is False.

The legal key sizes vary depending on the algorithm. The KeySize and BlockSize configuration settings may be set to specify the key and block size (in bits).

This setting is only applicable when KeyPassword is specified.

Note that when using the EzCrypt component, KeySize should be set after setting the Algorithm property.

The block size is a basic data unit in the operation of encrypt or decrypt. Messages longer than the block size are seen as successive blocks. If the message is shorter than the block size, the message will be padded with extra bits to reach the block size according to PaddingMode. Different symmetric algorithm has different valid block sizes.

The following algorithms have a fixed block size: AES, CAST, DES, IDEA, RC2, TripleDES, Blowfish, and Twofish.

If this config is true, the IV will be automatically prepended to the output data when calling Encrypt. When calling Decrypt and this setting is True, the IV is automatically extracted form the ciphertext. The default value is False.

This configuration setting specifies which hash algorithm will be used when deriving the Key and IV from KeyPassword. The default value is "MD5". Possible values are:

• "SHA1"
• "MD2"
• "MD5" (default)
• "HMAC-SHA1"
• "HMAC-SHA224"
• "HMAC-SHA256"
• "HMAC-SHA384"
• "HMAC-SHA512"
• "HMAC-MD5"
• "HMAC-RIPEMD160"

This configuration setting specifies the hex encoded salt value to be used along with the KeyPassword when calculating values for Key and IV.

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

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

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.

If set to True, when the component creates a thread the thread's Daemon property will be explicitly set to True. By default this setting is False and the component will not set the Daemon property on the created thread.