(DataFlex) Encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption

Demonstrates how to encrypt MIME using RSAES-OAEP with SHA256 and AES-128 content encryption.

Note: This example requires Chilkat v9.5.0.67 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoMime
    Variant vPart0
    Handle hoPart0
    Variant vPart1
    Handle hoPart1
    Variant vSbMime
    Handle hoSbMime
    Variant vCert
    Handle hoCert
    String sTemp1

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

    Get Create (RefClass(cComChilkatMime)) To hoMime
    If (Not(IsComObjectCreated(hoMime))) Begin
        Send CreateComObject of hoMime
    End

    // Create a MIME message to encrypt.
    Get ComNewMultipartMixed Of hoMime To iSuccess
    Get ComAddHeaderField Of hoMime "someHeader1" "Some value 1" To iSuccess
    Get ComAddHeaderField Of hoMime "someHeader2" "Some value 2" To iSuccess

    Get Create (RefClass(cComChilkatMime)) To hoPart0
    If (Not(IsComObjectCreated(hoPart0))) Begin
        Send CreateComObject of hoPart0
    End
    Get ComAddHeaderField Of hoPart0 "hdrA" "Some value A" To iSuccess
    Get ComAddHeaderField Of hoPart0 "hdrB" "Some value B" To iSuccess
    Set ComContentType Of hoPart0 To "text/plain"
    Send ComSetBody To hoPart0 "This is the plain-text body."

    Get Create (RefClass(cComChilkatMime)) To hoPart1
    If (Not(IsComObjectCreated(hoPart1))) Begin
        Send CreateComObject of hoPart1
    End
    Get ComAddHeaderField Of hoPart1 "hdrX" "Some value X" To iSuccess
    Get ComAddHeaderField Of hoPart1 "hdrY" "Some value Y" To iSuccess
    Set ComContentType Of hoPart1 To "text/xml"
    Send ComSetBody To hoPart1 "<a>This is the XML body</a>"

    Get pvComObject of hoPart0 to vPart0
    Get ComAppendPart Of hoMime vPart0 To iSuccess
    Get pvComObject of hoPart1 to vPart1
    Get ComAppendPart Of hoMime vPart1 To iSuccess

    // The MIME to be encrypted:
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbMime
    If (Not(IsComObjectCreated(hoSbMime))) Begin
        Send CreateComObject of hoSbMime
    End
    Get pvComObject of hoSbMime to vSbMime
    Get ComGetMimeSb Of hoMime vSbMime To iSuccess
    Get ComGetAsString Of hoSbMime To sTemp1
    Showln sTemp1

    // 	Content-Type: multipart/mixed; boundary="------------080303020600020604010008"
    // 	someHeader1: Some value 1
    // 	someHeader2: Some value 2
    // 
    // 	--------------080303020600020604010008
    // 	hdrA: Some value A
    // 	hdrB: Some value B
    // 	Content-Type: text/plain
    // 
    // 	This is the plain-text body.
    // 	--------------080303020600020604010008
    // 	hdrX: Some value X
    // 	hdrY: Some value Y
    // 	Content-Type: text/xml
    // 
    // 	<a>This is the XML body</a>
    // 	--------------080303020600020604010008--
    // 

    // Load an RSA-based certificate.
    // (Encrypting MIME only requires the public key.  Decrypting MIME requires the private key.)
    Get Create (RefClass(cComChilkatCert)) To hoCert
    If (Not(IsComObjectCreated(hoCert))) Begin
        Send CreateComObject of hoCert
    End
    Get ComLoadFromFile Of hoCert "qa_data/rsaes-oaep/cert.pem" To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoCert To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Set the email object properties to indicate the desired encryption.
    Set ComPkcs7CryptAlg Of hoMime To "aes"
    // If AES-256 is desired, set the following property to 256.
    Set ComPkcs7KeyLength Of hoMime To 128
    Set ComOaepPadding Of hoMime To True
    // Other choices for the OAEP hash algorithm are "sha1", "sha384", and "sha512"
    Set ComOaepHash Of hoMime To "sha256"

    // Encrypt the MIME (to create S/MIME, which stands for "Secure MIME")
    Get pvComObject of hoCert to vCert
    Get ComEncrypt Of hoMime vCert To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoMime To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Showln "---------------"
    Showln "Encrypted MIME:"
    Showln "---------------"
    Get ComGetMime Of hoMime To sTemp1
    Showln sTemp1

    Showln "Success."

    // ---------------------------------------------------
    // This is sample output for RSAES-OAEP encrypted MIME:
    // ---------------------------------------------------

    // Content-Type: application/x-pkcs7-mime; name="smime.p7m"; smime-type="enveloped-data"
    // someHeader1: Some value 1
    // someHeader2: Some value 2
    // Content-Disposition: attachment; filename="smime.p7m"
    // Content-Transfer-Encoding: base64
    // 
    // MIIDvAYJKoZIhvcNAQcDoIIDrTCCA6kCAQAxggGgMIIBnAIBADB1MGgxCzAJBgNVBAYTAlVTMQsw
    // CQYDVQQIDAJJTDEQMA4GA1UEBwwHV2hlYXRvbjEhMB8GA1UECgwYSW50ZXJuZXQgV2lkZ2l0cyBQ
    // dHkgTHRkMRcwFQYDVQQDDA5DaGlsa2F0V2lkZ2V0cwIJAMRwugDmvniwMBwGCSqGSIb3DQEBBzAP
    // oA0wCwYJYIZIAWUDBAIBBIIBAFaUL1ga1bOrdqYKcMm+FHUacBvzfBxk0fnPA0AMBdN8BvTWT3CN
    // YuqBhjOGyq0FpYD9pVZybUuFMCVsVyIW2O62HnsOK58YaPEUUcdH2sI+yjqX9UAn0P0nVDSsVdeK
    // W8x9kMfZg+3UP+y1q+lu7VRJO3f2C9oLQpTkc4VW4n7UOcUI0waykLCjCTL8lFDb7/J3GeuMKyhH
    // 5riNz50kpbzqn7m2Ks9yA+QmcTdXclclGFr2vwEUFzSdT2pxh/vaUrogCxkYWbQ2eV7vZg6O4kV0
    // aqHBqySkPTAzHKiHH8K8GVdlTuJ8350CpICa4T8w7/Ht5I7dyOPPKy4C+rVtrvcwggH+BgkqhkiG
    // 9w0BBwEwHQYJYIZIAWUDBAECBBDTC2WNBN+z2I47/4Feu9YqgIIB0MZvl3nC/q/Wzil6HtfQTr12
    // Q5moHY+ORzAa1P9XvX2ZUFhW530mV395mQw/A4o4ekmX9eRPEZquYzZPLT8hNeZIuNdhpcSQUmad
    // rKnKkR0wKJ3jJ3LhOIohVBQSYs8kVDZKq6lJBIznlsurFelZoNEhyRschhteDZx5rb7fCe8c2+/O
    // DHxaqaHCAzm/Bd7kcg6FFfuTZy3tu0PgP5IsXN4OFA3kkvwjAs4XsVS8jdIcmDNBkYieE8WmJOIm
    // Mz7mh/CHWLgWfGKa0Dkb9RcbFgLwYNT3GzuXFw9XPbKkEZjEAtJajWbN6P0WQl96YYd9qZxUpGxZ
    // zjTHEYzViUdUXolfpLufttrRXyxN1RFWhNFMFbv66xYqklMSgpdM/Mbk+EuvX6eXayDPvDBpfYMw
    // NoRAzv1Ony2c0ez9rBemJICicxAzpuvHbRxdjYs63Dnv+TYgpBK12AxWWpPIjXvw0WQKgTC3Tg8s
    // EnuGhpENqso/clJBEBSn4+2WhYtYbdI5sVme67lvqQl1Xxy3r18SWaQbyDOwgYi1E+54lMDOxMy0
    // y0FPHk5pP45DnXWj+XORPp5LhuZr5mf62YOXSSUwR5P0cXy4Rc+pN5lhRQPCf5z2


End_Procedure