(Lianja) Extract PKCS7 from MIME and Decrypt

Extracts the base64-encoded PKCS7 body of a MIME message to a file, and then decrypts using Chilkat Crypt2.

Chilkat Lianja Extension Download Chilkat Lianja Extension

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

loMime = createobject("CkMime")

llSuccess = loMime.LoadMimeFile("c:/aaworkarea/EmailInBytes.txt")
if (llSuccess <> .T.) then
    ? loMime.LastErrorText
    release loMime
    return
endif

llSuccess = loMime.SaveBody("c:/aaworkarea/smime.p7m")
if (llSuccess <> .T.) then
    ? loMime.LastErrorText
    release loMime
    return
endif

loCrypt = createobject("CkCrypt2")

llSuccess = loCrypt.AddPfxSourceFile("c:/aaworkarea/my.pfx","pfxPassword")
if (llSuccess = .F.) then
    ? loCrypt.LastErrorText
    release loMime
    release loCrypt
    return
endif

// Indicate the public-key (PKCS7) encryption/decryption should be used:
loCrypt.CryptAlgorithm = "pki"

lcInPath = "c:/aaworkarea/smime.p7m"
lcOutPath = "c:/aaworkarea/decrypted.dat"

llSuccess = loCrypt.CkDecryptFile(lcInPath,lcOutPath)
if (llSuccess = .F.) then
    ? loCrypt.LastErrorText
    release loMime
    release loCrypt
    return
endif

? "Success."


release loMime
release loCrypt