PowerShell Requires Chilkat v11.0.0+

RSA Encrypt RSA/ECB/OAEPWithSHA1AndMGF1Padding

See more RSA Examples

Demonstrates how to RSA encrypt using RSA/ECB/OAEPWithSHA1AndMGF1Padding. Also demonstrates RSA/ECB/OAEPWithSHA-256AndMGF1Padding. Both of these terms are from Java's JCE. Note: In this context, "ECB" doesn't actually mean anything. It's a symmetric cipher mode that doesn't apply (or make sense) in this context. PowerShell

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

$success = $false

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

$rsa = New-Object Chilkat.Rsa

#  First load a public key object with a public key.
#  In this case, we'll load it from a file.
$pubkey = New-Object Chilkat.PublicKey
$success = $pubkey.LoadFromFile("qa_data/pem/rsa_public.pem")
if ($success -eq $false) {
    $($pubkey.LastErrorText)
    exit
}

#  RSA encryption is limited to small amounts of data. The limit
#  is typically a few hundred bytes and is based on the key size and
#  padding (OAEP vs. PKCS1_5).  RSA encryption is typically used for
#  encrypting hashes or symmetric (bulk encryption algorithm) secret keys.
$plainText = "Time is an illusion. Lunchtime doubly so."

#  Import the public key to be used for encrypting.
$success = $rsa.UsePublicKey($pubkey)

#  To get OAEP padding, set the PkcsPadding property equal to $false
$rsa.PkcsPadding = $false
$rsa.OaepHash = "sha256"

#  Indicate we'll want hex output
$rsa.EncodingMode = "hex"

#  Encrypt..
$usePrivateKey = $false
$encryptedStr = $rsa.EncryptStringENC($plainText,$usePrivateKey)
$($encryptedStr)

#  -------------------------------------------------
#  Now decrypt with the matching private key.
$rsa2 = New-Object Chilkat.Rsa

$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadEncryptedPem("qa_data/pem/rsa_passwd.pem","passwd")
if ($success -eq $false) {
    $($privKey.LastErrorText)
    exit
}

$success = $rsa2.UsePrivateKey($privKey)

#  Make sure we have the same settings used for encryption.
$rsa2.PkcsPadding = $false
$rsa2.EncodingMode = "hex"
$rsa2.OaepHash = "sha256"

$originalStr = $rsa2.DecryptStringENC($encryptedStr,$true)

$($originalStr)