B4X

Decrypt a .p7m File (using a PFX)

See more Encryption Examples

_LANGUAGE_ sample code showing how to decrypt a .p7m using a .p12 / .pfx certificate w/ private key. B4X

Dim success As Boolean = False

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

Dim crypt As ChilkatCrypt2
crypt.Initialize("crypt")

'  Use a digital certificate and private key from a PFX file (.pfx or .p12).
Dim pfxPath As String = "myCertAndKey.pfx"
Dim pfxPassword As String = "test123"

success = crypt.AddPfxSourceFile(pfxPath, pfxPassword)
If success <> True Then
    Log(crypt.LastErrorText)
    Return
End If


'  Set the  outPath to whatever is appropriate.
'  If you are decrypting a PDF, your output might be "out.pdf"...
Dim inPath As String = "smime.p7m"
Dim outPath As String = "original.txt"

'  Indicate that we're doing public key decryption (i.e. PKCS7)
crypt.CryptAlgorithm = "pki"

success = crypt.CkDecryptFile(inPath, outPath)
If success = False Then
    Log(crypt.LastErrorText)
    Return
End If


Log("Success.")