MmoCryptMethod (Property)

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128-bit, 192-bit and 256-bit AES encryption with OFB mode of operation

See also

MmoCryptMethod (Property)

In french: CryptageMmo

Available only with these kinds of connection

The MmoCryptMethod property is used to set the encryption method of the memo file (.MMO) associated with the data file. You can:

Find out the encryption mode of a memo file associated with a data file (file defined in the data model editor or through programming).
Define the encryption mode of a memo file associated with a data file during its description through 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 memo file associated with the Customer data file
ResEncrypt = Customer.MmoCryptMethod

Syntax

Finding out the encryption mode of a MMO file Hide the details

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

<Current encryption mode>: Integer constant

The encryption modes are:
Versions 24 and later
hEncryptionAES128
New in version 24
hEncryptionAES128
hEncryptionAES128 Encryption 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 Output feedback (OFB).
Versions 27 and later
hEncryptionAES192
New in version 27
hEncryptionAES192
hEncryptionAES192 Encryption 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 Output feedback (OFB).
Versions 27 and later
hEncryptionAES256
New in version 27
hEncryptionAES256
hEncryptionAES256 Encryption 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 Output feedback (OFB).
Versions 19 and later
hEncryptionAuto
New in version 19
hEncryptionAuto
hEncryptionAuto Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hEncryptionNO No encryption is performed on the file.
hEncryptionRC5_12 The memo file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits).
hEncryptionRC5_16 The memo file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hEncryptionStandard The memo file is encrypted according to an optimized 128 bits encryption algorithm.

<Data file>: Character string

Name of the data file used. This name was defined in the data model editor or with the File Description type.

Defining the encryption mode of a MMO file Hide the details

<Data file>.MmoCryptMethod = <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:
Versions 24 and later
hEncryptionAES128
New in version 24
hEncryptionAES128
hEncryptionAES128 Encryption 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 Output feedback (OFB).
Versions 27 and later
hEncryptionAES192
New in version 27
hEncryptionAES192
hEncryptionAES192 Encryption 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 Output feedback (OFB).
Versions 27 and later
hEncryptionAES256
New in version 27
hEncryptionAES256
hEncryptionAES256 Encryption 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 Output feedback (OFB).
Versions 19 and later
hEncryptionAuto
New in version 19
hEncryptionAuto
hEncryptionAuto Encryption is performed only if a password is set for the data file. In this case, the memo file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hEncryptionNO No encryption is performed on the file.
hEncryptionRC5_12 The memo file is encrypted according to an optimized encryption algorithm (RC5 12 rounds on 128 bits).
hEncryptionRC5_16 The memo file is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hEncryptionStandard The memo file is encrypted according to an optimized 128 bits encryption algorithm.

Remarks

Versions 24 and later

128-bit, 192-bit and 256-bit AES encryption with OFB mode of operation

If the Memo file is encrypted using the AES algorithm, it is necessary to use the same method to encrypt the data (FicCryptMethod property) and the indexes (NdxCryptMethod property).
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, 192-bit and 256-bit AES encryption with OFB mode of operation

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

128-bit, 192-bit and 256-bit AES encryption with OFB mode of operation

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