ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Help / WLanguage / WLanguage properties / HFSQL properties
  • 128-bit, 192-bit and 256-bit AES encryption with the Output Feedback (OFB) mode
WINDEV
WindowsLinuxUniversal Windows 10 AppJavaReports and QueriesUser code (UMC)
WEBDEV
WindowsLinuxPHPWEBDEV - Browser code
WINDEV Mobile
AndroidAndroid Widget iPhone/iPadIOS WidgetApple WatchMac CatalystUniversal Windows 10 App
Others
Stored procedures
MmoEncryption (Property)
In french: CryptageMmo
HFSQL ClassicHFSQL Client/ServerAvailable only with these kinds of connection
Warning
From version 28 (75), MmoCryptMethod is kept for backward compatibility. This property has been replaced with MmoEncryption.
The MmoEncryption property sets the encryption method of the memo file (.MMO) associated with a data file. You can:
  • Get the encryption method of a memo file associated with a data file (file defined in the data model editor or programmatically).
  • Programmatically define the encryption method of a memo file.
Example
// Get the encryption method of the memo file associated with the Customer data file
ResEncrypt = Customer.MmoEncryption
Syntax

Getting the encryption method of a MMO file Hide the details

<Current encryption method> = <Data file>.MmoEncryption
<Current encryption method>: Integer constant
The encryption methods are:
hEncryptionAES128Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 128-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAES192Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 192-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAES256Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 256-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAutoEncryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key.
hEncryptionNONo encryption is performed on the file.
hEncryptionRC5_12The memo file is encrypted using an optimized 12-round RC5 algorithm with a 128-bit key.
hEncryptionRC5_16The memo file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key.
hEncryptionStandardThe memo file is encrypted using an optimized 128-bit algorithm.
<Data file>: Character string
Name of the data file used. This name is defined in the data model editor or with the File Description type.

Defining the encryption method of a MMO file Hide the details

<Data file>.MmoEncryption = <New encryption method>
<Data file>: Character string
Name of the data file used. This name is defined with the File Description type.
<New encryption method>: Integer constant
The encryption methods are:
hEncryptionAES128Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 128-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAES192Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 192-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAES256Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using a 256-bit AES algorithm with the Output Feedback (OFB) mode.
hEncryptionAutoEncryption is performed only if a password is set for the data file. In this case, the memo file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key.
hEncryptionNONo encryption is performed on the file.
hEncryptionRC5_12The memo file is encrypted using an optimized 12-round RC5 algorithm with a 128-bit key.
hEncryptionRC5_16The memo file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key.
hEncryptionStandardThe memo file is encrypted using an optimized 128-bit algorithm.
Remarks

128-bit, 192-bit and 256-bit AES encryption with the Output Feedback (OFB) mode

  • If the Memo file is encrypted using the AES algorithm, you need to use the same method to encrypt data (FicEncryption property) and indices (NdxEncryption property).
  • If there is encryption that uses the AES algorithm, the option "Enable a high-security level " is automatically applied.
Minimum version required
  • Version 9
This page is also available for…
Comments
Click [Add] to post a comment

Last update: 02/19/2024

Send a report | Local help