NdxCryptMethod (Property) In french: CryptageNdx
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The NdxCryptMethod property is used to configure the encryption method for the index (.NDX) file associated with the data file. You can: - Identify the encryption method of an index file associated with a data file (file defined in the data model editor or through programming).
- Defining the encryption mode of an index file associated with a data file during its description through programming.
// Identify the encryption method for the index file associated with the Customer data file
ResEncrypt = Customer.NdxCryptMethod
Syntax
Identifying the encryption method of an index file Hide the details
<Current encryption mode> = <Data file>.NdxCryptMethod
<Current encryption mode>: Integer constant The encryption modes 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 Output feedback (OFB). | | 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 Output feedback (OFB). | | 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 Output feedback (OFB). | | hEncryptionAuto | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits). | | hEncryptionNO | No encryption is performed on the index file. | | hEncryptionRC5_12 | The index file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits). | | hEncryptionRC5_16 | The index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits). | | hEncryptionStandard | The index file is encrypted according to an optimized encryption algorithm (on 128 bits). |
<Data file>: Character string Name of the data file used. This name was defined by the File Description type.
Defining the encryption method for the index file Hide the details
<Data file>.NdxCryptMethod = <New encryption mode>
<Data file>: Character string Name of the data file used. This name was defined by the File Description type. <New encryption mode>: Integer constant The encryption modes 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 Output feedback (OFB). | | 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 Output feedback (OFB). | | 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 Output feedback (OFB). | | hEncryptionAuto | Encryption is performed only if a password is set for the data file. In this case, the index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits). | | hEncryptionNO | No encryption is performed on the index file. | | hEncryptionRC5_12 | The index file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits). | | hEncryptionRC5_16 | The index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits). | | hEncryptionStandard | The index file is encrypted according to an optimized encryption algorithm (on 128 bits). |
Remarks 128-bit, 192-bit and 256-bit AES encryption with OFB mode of operation - If the index file is encrypted using the AES algorithm, the same encryption method must be used for the memos (MmoCryptMethod property) and the data (FicCryptMethod property).
- If there is encryption that uses the AES algorithm, the option "Enable a high-security level " is automatically applied.
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