Usage of Keystores

Note the following when using the SAPSSLA.pse, SAPSSLC.pse, and SAPSSLS.pse keystores.

• Keystore SAPSSLS.pse in SECUDIR

  There must be an SAPSSLS.pse keystore in the directory that you have defined using the SECUDIR environment variable. This is because SAPCYPTOLIB (sapcrypto.dll (Windows) or libsapcrypto.<ext> (UNIX)) is only initialized if there is a keystore in the form SAPSSLS.pse. Therefore, check existing keystores before creating and configuring new keystores, and check whether a keystore in the form SAPSLLS.pse already exists.

• Access Sequence

  SAPCRYPTOLIB accesses existing keystores in the following sequence:

  1. SAPSSLA.pse  →   2. SAPSSLC.pse  → 3. SAPSSLS.pse

  If these keystores exist, you have to import your certificates to the keystores in the following order:

  1. Import the certificate to SAPSSLA.pse.
  2. Import the certificate to SAPSSLC.pse.
  3. Import the certificate to SAPSSLS.pse.

  This sequence is only valid for anonymous client authentication such as that configured between the portal Web server and the TREX preprocessor.

• Format

  For the keystore, write the part of the name that appears before the period in capitals (for example, SAPSSL.pse) and use lowercase for the file extension (for example, SAPSSL.pse).

• Initializing Keystores/Access Permissions to Keystores/Create Active Credentials

  After you have created a keystore, you have to initialize it for use. The server must have active credentials at runtime. To produce active credentials, you must use the configuration tool's seclogin command to open the server's keystore. It is also very important to create the credential for the user who runs the server's process. For example, for a TREX server, the user is typically <sapsid>adm (UNIX) or SAPService<SAPSID> (Windows).

  Note

  The credentials are located in the cred_v2 file in the directory specified in the SECUDIR environment variable. Make sure that only the user under which the TREX service runs has access to this file (including read access).

  On Windows, you must also give the <SAPSID>adm operating system user that was created during the TREX installation access permission to the keystores; otherwise it cannot access the files. You do this by entering the following:

  • Windows: sapgenpse seclogin -p SAPS<SLS_or_NCS>.pse -O SAPService<SAPSID>
  • UNIX: sapgenpse seclogin -p SAPS<SLS_or_NCS>.pse -O <SAPSID>adm
    Note

    When you installed TREX you created a separate user for each TREX instance. This user has access to all files and directories that belong to the TREX instance in question. The specification <instance_number> must match the number that you specified when you installed the TREX instance.

    Command	Function
    seclogin	Function of SAPGENPSE that you use to initialize a new keystore for use.
    -p SAPSSLS.pse or SAPSNCS.pse	Specify the file name of the keystore that you want to initialize.
    -O SAPService<SAPSID> or <SAPSID>adm	You use this command to give the user SAPService <SAPSID> or <SAPSID>adm access to the keystore. The SAPService<SAPSID> operating system user was created during the TREX installation.

• Using SAPGENPSE to Extend Expired Certificates

  When the certificate that you have stored in a keystore expires, you can use SAPGENPSE to extend it again.

  You do this by entering the following:

  sapgenpse gen_pse -onlyreq -p sapSSLS.pse -r certreq_pse.txt

  Command	Function
  gen_pse	SAPGENPSE function that allows you to generate a certificate request for a certificate extension for a keystore that already exists in this case.
  -onlyreq	Generates a certificate request for an existing keystore.
  -p SAPSSLS.pse	You specify the file name of the keystore that contains the certificate that you want to extend here.
  -r certreq_pse.txt	Generates a certification request for your certification authority (CA).

  Send the certreq_pse.txt certification request to your CA.

  Once you have received a response from your CA in the form certresp_pse.cer, you import the extended certificate using the following SAPGENPSE command:

  sapgenpse import_own_cert -p sapSSLS.pse -c certresp_pse.cer

  Command	Function
  import_own_cert	Imports the response from the CA to a certification request
  -p SAPSSLS.pse	You specify the file name of the keystore that contains the certificate that you want to extend here.
  -c certresp_pse.cer	File name that contains the certificate extended by your CA.