Gets or sets the hash algorithm to use for signing messages with a digital signature.

Property Value

A reference to Algorithm object representing the hash algorithm to be used for signing messages. The default algorithm is SHA1.

Remarks

Usually, there is no need to change the default value of this property.

In order to set this property, the developer can get Algorithm instance using CreateInstanceByOid or CreateInstanceById methods.

Exceptions

Example

This sample sets MD5 hash algorithm if it's supported by the operating system.

[C#]
// To use the code below, import MailBee namespace at the top of your code
using MailBee.Security;

' The actual code (put it into a method of your class)

Smime objSmime = new Smime();
Algorithm[] algs = objSmime.Provider.GetSupportedAlgorithms();
Algorithm algHash = null;

// Iterate through all hash algorithms supported by OS
foreach (Algorithm alg in algs)
{
    if (alg.Name.ToLower() == "md5")
    {
        algHash = alg;
        break;
    }
}
if (algHash != null)
{
    objSmime.HashAlgorithm = algHash;
}

[Visual Basic]
' To use the code below, import MailBee namespace at the top of your code
Imports MailBee.Security

' The actual code (put it into a method of your class)

Dim objSmime As Smime = New Smime
Dim algs() As Algorithm = objSmime.Provider.GetSupportedAlgorithms()
Dim algHash As Algorithm = Nothing

' Iterate through all hash algorithms supported by OS
For Each alg As Algorithm In algs
    If (alg.Name.ToLower() = "md5") Then
        algHash = alg
        Exit For
    End If
Next
If (Not IsNothing(algHash)) Then
    objSmime.HashAlgorithm = algHash
End If

See Also

Smime Class | MailBee.Security Namespace | Sign

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