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(Excel) Generate RSA Key and Export to Encrypted PEM

Excel sample showing how to generate an RSA key and export to encrypted PEM.

Download Excel Class Modules

Chilkat Excel Class Modules

' This example assumes the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

Dim rsa As Chilkat.Rsa
Set rsa = Chilkat.NewRsa

' Generate a 1024-bit key.  Chilkat RSA supports
' key sizes ranging from 512 bits to 4096 bits.

success = rsa.GenerateKey(1024)
If (success <> True) Then
    Debug.Print rsa.LastErrorText
    Exit Sub
End If

' Get the private key as unencrypted XML:

keyXml = rsa.ExportPrivateKey()
Debug.Print keyXml

' To encrypt the key -- meaning to get the key in
' an encrypted PEM format -- load it into a PrivateKey object,
' and then export to encrypted PEM:
Dim privKey As Chilkat.PrivateKey
Set privKey = Chilkat.NewPrivateKey

success = privKey.LoadXml(keyXml)
If (success <> True) Then
    Debug.Print privKey.LastErrorText
    Exit Sub
End If

strEncPem = privKey.GetPkcs8EncryptedPem("myPassword")

' You now have the private key in an encrypted format,
' which may be (for example) saved to a database

 

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