(PowerShell) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----

Demonstrates how to encrypt using a certificate to produce output such as:

-----BEGIN PKCS7-----
MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ...
...
...
-----END PKCS7-----

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

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

$crypt = New-Object Chilkat.Crypt2

# Specify the encryption to be used.
# "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
$crypt.CryptAlgorithm = "pki"
$crypt.Pkcs7CryptAlg = "aes"
$crypt.KeyLength = 128
$crypt.OaepHash = "sha256"
$crypt.OaepPadding = $true

# A certificate is needed as the encryption key..
$cert = New-Object Chilkat.Cert
$success = $cert.LoadFromFile("qa_data/certs/testCert.pem")
if ($success -ne $true) {
    $($cert.LastErrorText)
    exit
}

# Tell the crypt object to use the certificate.
$crypt.SetEncryptCert($cert)

$toBeEncrypted = "This string is to be encrypted."

# Get the result in multi-line BASE64 MIME format.
$crypt.EncodingMode = "base64_mime"

$encryptedStr = $crypt.EncryptStringENC($toBeEncrypted)
if ($success -ne $true) {
    $($crypt.LastErrorText)
    exit
}

# Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
$sb = New-Object Chilkat.StringBuilder
$sb.AppendLine("-----BEGIN PKCS7-----",$true)
$sb.Append($encryptedStr)
$sb.AppendLine("-----END PKCS7-----",$true)

$outStr = $sb.GetAsString()

$($outStr)

# Sample output:

# -----BEGIN PKCS7-----
# MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix
# GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
# Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50
# aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B
# AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37
# awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx
# H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36
# pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X
# e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf
# loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+
# TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ==
# -----END PKCS7-----