(PowerShell) Subject Alternative Name for ICP Brasil Certs

Demonstrates how to access the multiple names contained in the Subject Alternative Name of a certificate. This example is for an ICP Brasil certificate.

For more information, see http://oidref.com/2.16.76.1.3

Chilkat .NET Downloads Chilkat .NET Assemblies

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

$cert = New-Object Chilkat.Cert

$success = $cert.LoadFromFile("qa_data/certs/testIcpBrasil.cer")
if ($success -eq $false) {
    $($cert.LastErrorText)
    exit
}

# If the cert's Subject Alternative Name contains multiple values, each specified by an OID,
# then the Rfc822Name property returns XML.
$subjectAltNameXml = $cert.Rfc822Name

$($subjectAltNameXml)

# Here's a sample of the subjectAltNameXml:

# <SubjectAltName>
#     <name type="oid" oid="2.16.76.1.3.4">290999653223955019700000000000000000000150424SRJUXPTS</name>
#     <name type="oid" oid="2.16.76.1.3.2">JOAO SILVA</name>
#     <name type="oid" oid="2.16.76.1.3.3">02408939000115</name>
#     <name type="oid" oid="2.16.76.1.3.7">000000000000</name>
# </SubjectAltName>

# The XML can be parsed like this:

$xml = New-Object Chilkat.Xml
$xml.LoadXml($subjectAltNameXml)

$i = 0
$count_i = $xml.NumChildrenHavingTag("name")
while ($i -lt $count_i) {
    $xml.I = $i
    $oid = $xml.ChilkatPath("name[i]|(oid)")
    $name = $xml.GetChildContent("name[i]")
    $($oid + ": " + $name)
    $i = $i + 1
}