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VB.NET

Export Selected PFX Contents as PEM

See more PFX/P12 Examples

Demonstrates Pfx.ToPemEx, which exports selected PFX contents as PEM-formatted text with control over which parts are included and how private keys are encrypted.

Background. Private keys are written in PKCS #8 form. Supported key-encryption algorithms include aes128, aes192, aes256, and 3des; leaving the algorithm empty produces unencrypted keys.

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VB.NET
Dim success As Boolean = False

Dim pfx As New Chilkat.Pfx

'  The file path is relative to the application's current working directory.  An absolute path
'  may also be used.  Supply the path appropriate to your own environment.
'  The PFX password should come from a secure source rather than being hard-coded.
Dim password As String = "myPfxPassword"
success = pfx.LoadPfxFile("qa_data/identity.pfx",password)
If (success = False) Then
    Debug.WriteLine(pfx.LastErrorText)
    Exit Sub
End If


'  Export selected PFX contents as PEM-formatted text.  The boolean arguments control what is
'  included: extended attributes, and whether to omit private keys, certificates, or CA certificates.
Dim bExtendedAttrs As Boolean = False
Dim bNoKeys As Boolean = False
Dim bNoCerts As Boolean = False
Dim bNoCaCerts As Boolean = False

'  Encrypt the exported private keys.  Supported algorithms include aes128, aes192, aes256, and 3des;
'  leave the algorithm empty for unencrypted keys.  The key password should come from a secure source.
Dim keyPassword As String = "myKeyPassword"
Dim pem As String = pfx.ToPemEx(bExtendedAttrs,bNoKeys,bNoCerts,bNoCaCerts,"aes256",keyPassword)
If (pfx.LastMethodSuccess = False) Then
    Debug.WriteLine(pfx.LastErrorText)
    Exit Sub
End If

Debug.WriteLine(pem)