NdxCryptMethod (Property)

ONLINE HELP
WINDEV, WEBDEV AND WINDEV MOBILE

Version:

Home | Sign in | English

128-bit AES encryption with OFB mode of operation

See also

NdxCryptMethod (Property)

In french: CryptageNdx

Available only with these kinds of connection

0. You can:

Find out the encryption mode of an index file associated with a data file (file defined in the data model editor or by programming).
Defining the encryption mode of an index file associated with a data file during its description by programming.

Versions 17 and later

This property is now available for iPhone/iPad applications.

New in version 17

This property is now available for iPhone/iPad applications.

Versions 18 and later

This property is now available in Windows Store apps mode.

New in version 18

This property is now available in Windows Store apps mode.

Versions 21 and later

This property is now available in Universal Windows 10 App mode.

New in version 21

This property is now available in Universal Windows 10 App mode.

Versions 24 and later

This property is now available in Android Widget mode.

This property is now available for Android applications.

This property is now available for Java applications.

New in version 24

This property is now available in Android Widget mode.

This property is now available for Android applications.

This property is now available for Java applications.

This property is now available in Android Widget mode.

This property is now available for Android applications.

This property is now available for Java applications.

Example

// Find out the encryption mode of the index file associated with the Customer data file
ResEncrypt = Customer.NdxCryptMethod

Syntax

Finding out the encryption mode of index file Hide the details

<Current encryption mode> = <Data file>.NdxCryptMethod

<Current encryption mode>: Integer constant

The encryption modes are:
Versions 24 and later
hCryptAES128
New in version 24
hCryptAES128
hCryptAES128 The encryption is performed only if a password is defined for the file. In this case, the index file is encrypted using a 128-bit AES algorithm with Output feedback (OFB).
Versions 19 and later
hCryptAuto
New in version 19
hCryptAuto
hCryptAuto The encryption is performed only if a password is defined for the file. In this case, the index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hCryptNo No encryption is performed on the index file.
hCryptRC5_12 The index file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits).
hCryptRC5_16 The index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hCryptStandard The index file is encrypted according to an optimized encryption algorithm (on 128 bits).

<Data file>: Character string (with or without quotes)

Name of data file used. This name was defined by the File description type.

Defining the encryption mode of index file Hide the details

<Data file>.NdxCryptMethod = <New encryption mode>

<Data file>: Character string (with or without quotes)

Name of data file used. This name was defined by the File description type.

<New encryption mode>: Integer constant

The encryption modes are:
Versions 24 and later
hCryptAES128
New in version 24
hCryptAES128
hCryptAES128 The encryption is performed only if a password is defined for the file. In this case, the index file is encrypted using a 128-bit AES algorithm with Output feedback (OFB).
Versions 19 and later
hCryptAuto
New in version 19
hCryptAuto
hCryptAuto The encryption is performed only if a password is defined for the file. In this case, the index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hCryptNo No encryption is performed on the index file.
hCryptRC5_12 The index file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits).
hCryptRC5_16 The index file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hCryptStandard The index file is encrypted according to an optimized encryption algorithm (on 128 bits).

Remarks

Versions 24 and later

128-bit AES encryption with OFB mode of operation

If the index file is encrypted using the AES algorithm, it is necessary to use the same method to encrypt the memos (MmoCryptMethod) and the data (FicCryptMethod).
If there is encryption that uses the AES algorithm, the option "High security level with password" is automatically applied.

New in version 24

128-bit AES encryption with OFB mode of operation

If the index file is encrypted using the AES algorithm, it is necessary to use the same method to encrypt the memos (MmoCryptMethod) and the data (FicCryptMethod).
If there is encryption that uses the AES algorithm, the option "High security level with password" is automatically applied.

128-bit AES encryption with OFB mode of operation

If the index file is encrypted using the AES algorithm, it is necessary to use the same method to encrypt the memos (MmoCryptMethod) and the data (FicCryptMethod).
If there is encryption that uses the AES algorithm, the option "High security level with password" is automatically applied.