B4X

PKCS7 Decrypt Using .pfx or .p12 Data

See more MIME Examples

Demonstrates how to decrypt MIME using a specifc PFX file (.pfx or .p12) for the source of certificate(s) and private key(s). B4X

Dim success As Boolean = False

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

Dim mime As ChilkatMime
mime.Initialize

'  Load the MIME
success = mime.LoadMimeFile("encrypted.mim")
If success = False Then
    Log(mime.LastErrorText)
    Return
End If



Dim fac As ChilkatFileAccess
fac.Initialize
pfxData = fac.ReadEntireFile("pfxStore/myPkcs12.p12")
If fac.LastMethodSuccess <> True Then
    Log(fac.LastErrorText)
    Return
End If


Dim pfxPassword As String = "myPassword"
success = mime.DecryptUsingPfxData(pfxData, pfxPassword)
If success = False Then
    Log(mime.LastErrorText)
    Return
End If


'  Display the decrypted MIME:
Log(mime.GetMime)

'  Note: The MIME to be decrypted should look something like this
'  when viewed in a text editor:
'  (Note that the Content-Type is application/x-pkcs7-mime)

'  Content-Disposition: attachment; filename="smime.p7m";
'  Content-Transfer-Encoding: base64
'  Content-Type: application/x-pkcs7-mime;
'   name="smime.p7m";
'  
'  MIICRAYJKoZIhvcNAQcDoIICNTCCAjECAQAxggHIMIIBxAIBADCBqzCBlTELMAkGA1UEBhMCVVMx
'  CzAJBgNVBAgTAlVUMRcwFQYDVQQHEw5TYWx0IExha2UgQ2l0eTEeMBwGA1UEChMVVGhlIFVTRVJU
'  UlVTVCBOZXR3b3JrMSEwHwYDVQQLExhodHRwOi8vd3d3LnVzZXJ0cnVzdC5jb20xHTAbBgNVBAMT
'  FFVUTi1VU0VSRmlyc3QtT2JqZWN0AhEA5vxolKNrYgp1Z7ABICdK+zANBgkqhkiG9w0BAQEFAASC
'  AQAJ68jTh3u3ovsOuz1aHXTV90GBB6DMfCdx0bZ85trSvDXBevMOtQdctz653de8EB2xU4RlaPQa
'  oBpF8G01PMaKezd+FGLbhm7gmKl7boej3BboUzM4wrwjc8qHTGc/haT1ZA3jUU3DR4emVXNmRgWc
'  FDU5Dnkf+Z2YXQop9wPCf1Ng+8LLjBX9yxgXP1ZyFDe9vUnSkk2fmZatEY2Y6eWHNbrj6q4F40qN
'  PAyZW1rJSFmKTSPSzv7S0VWBMh+FgUKtqk4I6/+zhneLYeJBZFskmMIGFpgKdgrN7vbbr1a2gv/M
'  PbHUxwKMD4KZ2auyuGKMVLBOm+n8v5f8EegloL/UMGAGCSqGSIb3DQEHATAZBggqhkiG9w0DAjAN
'  AgE6BAgcohHNLdl9FoA4q22x8vXs05wuScRgLhwMOzvdGQkBJx+6iQDBuoCVxF8sQ35g+0PPxN3M
'  6Zw6nI1gSIIKBS3ZjtI=