(PowerShell) RSA Signature SHA256withRSA, iso-8859-1, base64

See more RSA Examples

RSA sign the iso-8859-1 byte representation of a string with SHA256withRSA, and return the signature in the base64 encoding.

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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.

# This example will duplicate the following Java code:
# 
# Signature sign = Signature.getInstance("SHA256withRSA");
# sign.initSign(privateKey);
# sign.update(original.getBytes(Charset.forName("ISO-8859-1")));
# 
# ...
# byte[] resultado = sign.sign();
# sello = encodeByteArrayToBase64(resultado);
# 

# Load an RSA private key for signing.
# You can load any format file.  This example loads a .pem, but you can provide path to any type of file holding a private key.
$privKey = New-Object Chilkat.PrivateKey
$success = $privKey.LoadAnyFormatFile("qa_data/pem/rsa_passwd.pem","passwd")
if ($success -ne $true) {
    $($privKey.LastErrorText)
    exit
}

$rsa = New-Object Chilkat.Rsa
$rsa.ImportPrivateKeyObj($privKey)

$originalData = "This is the string to be hashed an RSA signed."

# Indicate that we want the iso-8859-1 byte representation of the string to be signed
$rsa.Charset = "iso-8859-1"

# We want the RSA signature in base64 format
$rsa.EncodingMode = "base64"

$sigBase64 = $rsa.SignStringENC($originalData,"sha256")
$($sigBase64)