Question

how to generate CSR using the keypair generate from HSM

Asked by: chinsw

I need to generate the certificate signing request to send to certificate authority (CA) to get the digital certificate. The keypair is generated by using the thales host security module (HSM). How can i generate the CSR?

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Asked On
2009-08-11 at 03:26:06ID24642582
Topics

Digital Forensics

,

Encryption for Network Security

,

Operating Systems Network Security

Participating Experts
2
Points
500
Comments
8

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Answers

 

by: ParanormasticPosted on 2009-08-11 at 07:28:43ID: 25069466

1) Read the big insert in the box for setting up the HSM to create the Security World and all that good stuff.
2) The HSM does not initiate the generation of the CSR.  Use whatever software to do it with (e.g. the CA installation wizard, IIS wizard, OpenSSL, etc.)
In the wizard or command there should be an option to designate a hardware device / encryption engine / HSM, etc. and select the nCipher CSP.  In Windows wizards, this is typically on the screen when you choose the CSP, with the checkbox located under the list.
For OpenSSL use the normal commands, but add in -engine YourHSM.

Not sure which model of HSM you got, but you can use this for a documentation base:
http://iss.thalesgroup.com/en/Products/Hardware%20Security%20Modules.aspx

Again, make sure you read the insert first to set up the HSM and set up your box to be a client of the HSM.  After that, then you can use the doc link above to install whatever you are doing.

 

by: chinswPosted on 2009-08-11 at 18:19:43ID: 25075012

Actually, i'm using the Thales HSM 8000 and i get this list of RSA command from the HSM manual:
1)   Generate a Public/Private Key Pair (EI)
2)   Load a Private Key (EK)
3)   Translate a Private Key (EM)
4)   Import a Public Key (EO)
5)   Validate a Public Key (EQ)
6)   Validate a Certificate and Import the Public Key (ES)
7)   Translate a Public Key (EU)
8)   Generate an RSA Signature (EW)
9)   Validate an RSA Signature (EY)
10) Import Key under an RSA Public Key (GI)
11) Export Key under an RSA Public Key (GK)
So, i planned to use the command (1) to generate the keypair in HSM and extract the private and public key out from HSM and store in the database (mysql). Then, generate the CSR by retrieve the private and public key from mysql. Can i do this and how to do this?

 

by: ParanormasticPosted on 2009-08-14 at 07:15:03ID: 25098257

Thales bought out ncipher not too long ago - most of the models were ncipher (nfast pci cards, nethsm 2000, etc.).  enough stuff anyways to the one you got.  that's a pretty beefy HSM you got there.

You can create the key pair and copy out the cert to install on your box using the menu above.  But that would be just for a local key pair.  If you need a CA signed cert (to make a CSR) then you need to use the proper application.  You can use IIS or OpenSSL to generate the cert and install it there, being careful to flag the HSM to generate the keyset, then export the cert and use that using otherwise normal processes to secure sql or whatever.

You could see if option 1 has the ability to export a CSR to a remote file system (your server host) to submit to the CA, but I wouldn't get my hopes up- this is not typical.

 

by: ParanormasticPosted on 2009-08-14 at 07:18:39ID: 25098299

Here's the more direct link to your equipment's integration guids.  I would also recommend getting signed up for the website support login since it takes a few hours or a day for them to get back on that so you can log in - better to just have it ready for someday.

http://iss.thalesgroup.com/Resources/Integration%20Guides.aspx

 

by: chinswPosted on 2009-08-14 at 07:23:03ID: 25098347

I'm thinking to generate the keypair at HSM. Extract out the public key from HSM and the private key remain store at HSM. Then, i will use the public key to generate the CSR and then let the HSM sign the CSR using the private key and then make the whole thing to conform to PKCS#10 standard. Is it possible to do this with openssl? how to generate the CSR by make use the public key?

 

by: chinswPosted on 2009-08-14 at 07:27:13ID: 25098391

I have the HSM 8000 in plance and plan to use the RSA firmware to do this instead of get the ncipher to do this. So, i need a solution to get the CSR by make use the HSM 8000. Is it possible?

 

by: breadtanPosted on 2009-08-15 at 02:11:28ID: 25104623

Couple of tool to generate CSR, see below. But the key parameters are the provider name and database path to the storage of private keys. I do not see that you need to customise it (have your own tool) - as you mentioned, it is better to consult the vendor as solution varies for different vendor as well. Vendor may have tools to do this as well especially for their troubleshooting.

a) Keytool
> -certreq {-alias alias} {-sigalg sigalg} {-file certreq_file} [-keypass keypass] {-storetype storetype} {-keystore keystore} [-storepass storepass] [-provider provider_class_name] {-v} {-Jjavaoption}

See http://java.sun.com/j2se/1.3/docs/tooldocs/win32/keytool.html#certreqCmd

b)CertUtil
> certutil -R -s "cn=myhost.test.sun.com,ou=TEST,o=Sun Microsystems Inc.,l=Menlo Park,st=CA,c=US" -o DER.csr -d /var/mps/serverroot/alias -P slapd-myhost-"

See http://www.mozilla.org/projects/security/pki/nss/tools/certutil.html#1028731

c)Openssl
> openssl req -new -key www.mydomain.com.key -out www.mydomain.com.csr -config openssl.cnf

 See http://www.openssl.org/docs/apps/req.html#

20120131-EE-VQP-002

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