CryptMethod (Property)

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ExtendedInfo property and connection

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HFSQL properties

CryptMethod (Property)

In french: Cryptage

Not available with these kinds of connection

The CryptMethod property allows you to manage the type of encryption used between Client computers and an HFSQL server. You can:

Find out the type of encryption used for an HFSQL Client/Server connection.
Define the type of encryption used for the HFSQL Client/Server connection. In this case, if the connection is currently opened, it will be closed then re-opened with the new parameters during a first access to a data file that is using this connection.

Remark: The connection can correspond to:

a connection described in the data model editor,
a connection described by HConnect, HDescribeConnection or HOpenConnection.
a connection described by a Connection variable.

Example

MyConnection is Connection
// Describe the connection
MyConnection.User = "USER"
MyConnection.Password = "PASSWORD"
MyConnection.Server = "MYSERVER"
MyConnection.Database = "Database"
MyConnection.CryptMethod = hEncryptionRC5_16
MyConnection.Provider = hAccessHFClientServer
MyConnection.Access = hOReadWrite
MyConnection.ExtendedInfo = "Extended information"

HOpenConnection(MyConnection)

Syntax

Finding out the type of encryption for an HFSQL Client/Server connection Hide the details

<Type of encryption> = <Connection used>.CryptMethod

<Type of encryption>: Constant

Returns the type of encryption used for the connection:
hEncryptionNO No encryption is performed
hEncryptionRC5_16 The connection between the server and the client computers is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits)
hEncryptionStandard The connection between the server and the client computers is encrypted according to an optimized encryption algorithm on 128 bits

<Connection used>: Name of the connection

Name of the connection used. This name was defined:
in the data model editor,
by HDescribeConnection or HOpenConnection,
by the Connection type.

Defining the type of encryption for a connection Hide the details

<Connection used>.CryptMethod = <Type of encryption>

<Connection used>: Name of the connection

Name of the connection used. This name was defined:
in the data model editor,
by HDescribeConnection or HOpenConnection,
by the Connection type.

<Type of encryption>: Constant

Defines the type of encryption used for the connection:
hEncryptionNO No encryption is performed
hEncryptionRC5_16 The connection between the server and the client computers is encrypted according to an optimized encryption algorithm (RC5 16 rounds on 128 bits).
hEncryptionStandard The connection between the server and the client computers is encrypted according to an optimized encryption algorithm on 128 bits.

Remarks

ExtendedInfo property and connection

Changing the encryption information of an HFSQL Client/Server connection with the ExtendedInfo property automatically updates the information returned by the CryptMethod property (and vice versa).

Therefore, the following line of code:

MyConnection.CryptMethod = hCryptRC5_16

will modify the ENCRYPTION option in the string of extended information.

Similarly, the following line of code:

MyConnection.ExtendedInfo = "CRYPT=RC5_16"

will modify the CryptMethod property.