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- 128-bit, 192-bit and 256-bit AES encryption with the Output Feedback (OFB) mode
NdxEncryption (Property) In french: CryptageNdx
  Available only with these kinds of connection
 Warning
From version 28 (75), NdxCryptMethod is kept for backward compatibility. This property has been replaced with NdxEncryption.
The NdxEncryption property sets the encryption method of the index file (.NDX) associated with a data file. You can: - Know how to encrypt an index file associated with a data file (data file defined in the data model editor or programmatically defined).
- Programmatically define the encryption method of an index file associated with a data file.
ResCryptage = Client.CryptageNdx
Syntax
Getting the encryption method of an index file Hide the details
<Current encryption method> = <Data file>.NdxEncryption
<Current encryption method>: Integer constant The encryption methods are: | | | hEncryptionAES128 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 128-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAES192 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 192-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAES256 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 256-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAuto | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key. | | hEncryptionNO | No encryption is performed on the index file. | | hEncryptionRC5_12 | The index file is encrypted using an optimized 12-round RC5 algorithm with a 128-bit key. | | hEncryptionRC5_16 | The index file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key. | | hEncryptionStandard | The index file is encrypted using an optimized 128-bit algorithm. |
<Data file>: Character string Name of the data file used. This name is defined with the File Description type.
Defining the encryption method of an index file Hide the details
<Data file>.NdxEncryption = <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: | | | hEncryptionAES128 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 128-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAES192 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 192-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAES256 | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using a 256-bit AES algorithm with the Output Feedback (OFB) mode. | | hEncryptionAuto | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key. | | hEncryptionNO | No encryption is performed on the index file. | | hEncryptionRC5_12 | The index file is encrypted using an optimized 12-round RC5 algorithm with a 128-bit key. | | hEncryptionRC5_16 | The index file is encrypted using an optimized 16-round RC5 algorithm with a 128-bit key. | | hEncryptionStandard | The index 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 index file is encrypted using the AES algorithm, you need to use the same method to encrypt memo files (MmoEncryption property) and data (FicEncryption property).
- If there is encryption that uses the AES algorithm, the option "Enable enhanced security " is automatically applied.
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