X509ContentType

I've been using a powershell script to export certificates from the
computer's personal store.

There appears to be 8 members of the subject enumeration

217# [System.Security.Cryptography.X509Certificates.X509ContentType]::Pfx = ""
Exception setting "Pfx": "Cannot convert value "" to type "System.Security.Cry
tography.X509Certificates.X509ContentType" due to invalid enumeration values.
pecify one of the following enumeration values and try again. The possible enu
eration values are "Unknown, Cert, SerializedCert, Pfx, Pkcs12,
SerializedStore
, Pkcs7, Authenticode"."
At line:1 char:66
+ [System.Security.Cryptography.X509Certificates.X509ContentType]::P <<<< fx =

I don't have any issues when I use the content types Cert, SerializedCert,
Pfx, Pkcs12

All the others (Unknown, SerializedStor, Pkcs7, Authenticode) yield the
likes of

Exception calling "Export" with "2" argument(s): "Invalid content type."
At C:\IMCSBU\Enrollment\test1.ps1:94 char:28
+ $certbytes = $cert.Export( <<<<
[System.Security.Cryptography.X509Certifica
tes.X509ContentType]::Pkcs7, $strPassword)

I was questioning if this is limitation of back-end classes used by the
powershell infrastructure or interface with same?

On Sep 7, 12:40 pm, Joe G <J...@xxxxxx> wrote: This is expected. The only valid content types for certificate export
are Cert, SerializedCert, and Pkcs12. This enumeration is used in
various places in the crypto APIs; it's not solely for use in export.

Hope this helps,

- Oisin

Thank you Oisin, especially for reminding me that the subject enumeration is
used other places. By the way is was able to the pfx to work (but it's the
same as the pkcs12). At first I was thinking that one of them would mimic
the DER Base64 export scenario but it was wishfull thinking. I guess I'll
just have to take the bytes output by the export process, convert them to a
base64 string and output them my selves.

"Oisin Grehan" wrote:

On Sep 7, 12:40 pm, Joe G <J...@xxxxxx> wrote: Btw, the Pfx enumeration is just an alias for Pkcs12.

- Oisin