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Export public key with certificate

  • 1.  Export public key with certificate

    Posted Jan 28, 2014 06:17 AM

    Hi,

    I need to find the right command string to export a public key along with the x509 certificate. (that will give me a .crt file extension)  I actually need it in .CER format but I don't believe pgp commandline can do that (i'll have to convert it using other means)

    Looking at the manual the --export command along with --export-format looks like whta I need to do, but doesnt really give me any syntax guidance:

    Export Format

    PGP Command Line supports multiple export formats:

    • Complete (default): Only ASCII-armored files are output; the default file extension is .asc. Use Complete to export keys in a newer format that supports all PGP features.
    • Compatible: Only ASCII-armored files are output; the default file extension is .asc. Use Compatible to export keys in a format compatible with older versions of PGP software; that is, PGP software versions 7.0 and prior. Some newer PGP features are not supported when using Compatible.
    • X.509-cert: Only ASCII-armored files are output; the default file extension is .crt. The <input> must match exactly one key, and --cert is required.
    • PKCS8: This format can produce unencrypted and encrypted PKCS8. Only ASCII armored files are output; the default file extension is .p8. A signed key must be paired. The <input> must match exactly one key.

     

    It doesn't tell me what syntax I need to use to get it out in X.509 format.  There is a command example: 

    Export the private key associated with the top X.509 certificate
    pgp --export "Bob Smith" --export-format pkcs12 --passphrase "B0bsm1t4" --cert 0x6245273E
    0x6245273E:export key (0:key exported to Bob Smith.p12)
     
    Bob's key pair is exported to a file "Bob Smith.p12".
     
    But this doesn't give me what I want.
     
    Long story short what I am after is:
     
    1. Command to export X509 certificate with public key into DER .crt format or PKCS#7 DER .p7c format 

     

    Thanks!

     

     


  • 2.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 29, 2014 04:10 AM

    Hi Alex,

    I haven't tested this, but the output of "pgp --help" includes:

    --export-format        compatible | complete | x509-cert | pkcs8 | pkcs12 | csr

    Have you tried with the switch x509-cert instead of pkcs12?

    Rgs,
    dcats



  • 3.  RE: Export public key with certificate

    Posted Jan 30, 2014 06:44 AM

    Hi dcats,

    Command I am currently trying to use is this:

    C:\Windows\system32>pgp --export "Test User" --export-format x509-cert --cert 0x2314D6F2
    0x2314D6F2:export key (3058:subkey not found)
     
    I got the KeyID from importing the pkr of Test User into pgp desktop.  Is there an easier way I can determine the keyID from within cmdline?
     
    According to PGP Desktop there is a subkey within that PKR also, So I am confused!


  • 4.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 30, 2014 09:39 AM

    Hi Alex,

    Please try with this syntax and let me know if it works:
    pgp --export "Test User" --export-format x509-cert -o "my_0x2314D6F2_cert.crt"
    or
    pgp --export 0x2314D6F2 --export-format x509-cert -o "my_0x2314D6F2_cert.crt"

    For checking the key details you can attempt:
    pgp "Test User" --list-key-details
    or
    pgp 0x2314D6F2 --list-key-details


    Rgs,
    dcats



  • 5.  RE: Export public key with certificate

    Posted Jan 30, 2014 11:26 AM
     
    C:\Windows\system32>pgp --export "Test User" --export-format x509-cert -o "certnew.crt"
    pgp:export key (3090:operation failed, item not found)
     
    C:\Windows\system32>pgp "Test User" --list-key-details
    pgp:list key details (2710:days left in current license, 27)
    Key Details: Test User <test.user@******.com>
         Key ID: 0x2314D6F2 (0x06FE15592314D6F2)
           Type: RSA (v4) key pair
           Size: 2048
       Validity: Complete
          Trust: Implicit (Axiomatic)
        Created: 2014-01-28
        Expires: Never
         Status: Active
         Cipher: AES-128
         Cipher: AES-192
         Cipher: AES-256
         Cipher: TripleDES
           Hash: SHA-256
           Hash: SHA-512
       Compress: ZLIB
          Photo: No
      Revocable: Yes
          Token: No
      Keyserver: Absent
        Default: Yes
        Wrapper: No
     Prop Flags: Sign user IDs
     Prop Flags: Sign messages
     Prop Flags: PGP NetShare
     Prop Flags: PGP WDE
     Prop Flags: PGP ZIP
     Prop Flags: PGP Messaging
     Ksrv Flags: Absent
     Feat Flags: Modification detection
      Notations: 01 0x80000000 preferred-email-encoding@pgp.com=pgpmime
          Usage: Sign user IDs
          Usage: Sign messages
     
      Subkey ID: 0xE463BC8A (0x2935C8A1E463BC8A)
           Type: RSA (v4) subkey pair
           Size: 2048
        Created: 2014-01-28
        Expires: Never
         Status: Active
      Revocable: Yes
          Token: No
          X.509: No
     Prop Flags: Encrypt communications
     Prop Flags: Encrypt storage
     Prop Flags: PGP NetShare
     Prop Flags: PGP WDE
     Prop Flags: PGP ZIP
     Prop Flags: PGP Messaging
      Notations: None
          Usage: Encrypt communications
          Usage: Encrypt storage
          Usage: PGP NetShare
          Usage: PGP WDE
          Usage: PGP ZIP
          Usage: PGP Messaging
     
            ADK: None
     
        Revoker: None
     
    1 key found

     



  • 6.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 31, 2014 03:58 AM

    Hi Alex,

    Please try it like this:
    pgp --export "Test User" --export-format x509-cert --passphrase "passphrase" -o "certnew.crt"

    Rgs,
    dcats



  • 7.  RE: Export public key with certificate

    Posted Jan 31, 2014 04:53 AM

    Hi dcats,

     

    I get the same error: 3090: operation failed, item not found.

     

    I am running in an admin cmd window btw.



  • 8.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 31, 2014 06:00 AM

    Hi Alex,

    In PGP Desktop, if you expand all user IDs within that key, do you have one with a certificate sign (showing CN=domain.tld)?

    Rgs,
    dcats



  • 9.  RE: Export public key with certificate

    Posted Jan 31, 2014 07:06 AM

    This is what I have when I imported that key into my local PGP Desktop installation:

     

    pgpissue.png



  • 10.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 31, 2014 07:44 AM

    Hi Alex,

    That key does not contain a certificate. You only have the keypair of the PGP key.
    It should be like this one below.

    key_with_cert.png

    Rgs,
    dcats



  • 11.  RE: Export public key with certificate

    Posted Jan 31, 2014 09:57 AM

    Ah - that could be why!  Can I generate one in cmdline?



  • 12.  RE: Export public key with certificate

    Broadcom Employee
    Posted Jan 31, 2014 12:45 PM
    Hi Alex, I would need to double check. I believe you can create the key material with PGP Command Line but then you need to generate the Certificate Signing Request (CSR) and have a CA signing the key. I think you cannot self-sign it with PGP Command Line. However, you can have users with certificates generated by a SEMS with an Organization Certificate. Or use OpenSSL to generate and sign certificates. If they need to be trusted by an external CA that's another story. I'm not sure if useful or not, but you can check this great tutorial made by Andreas Zengel, here is the link: https://www-secure.symantec.com/connect/forums/step-step-guide-create-x509-certificate-extended-properties-using-kms Rgs, dcats


  • 13.  RE: Export public key with certificate
    Best Answer

    Broadcom Employee
    Posted Feb 03, 2014 10:43 AM

    Hi Alex,

    It will not be possible to generate a self-signed certificate with PGP Command Line.
    The product was conceived to work with OpenPGP. It allows x.509 usage as an "extended feature".


    Rgs,
    dcats



  • 14.  RE: Export public key with certificate

    Posted Feb 03, 2014 10:51 AM

    Hi dcats,

    I'll generate a self-signed via openSSL and then see what I can do.  That article done by Andreas is very handy - people should definately check that out.