Okay, so if I understand.

I get the public key from the 3rd party client.
I import the key into my environment.
I code my JCL to use 
  // KEYLABL1=’MyEKMServerJCEKS’, 
  // KEYENCD1=L, 
  // KEYLABL2=’CompanyXPublicKeyJCEKS’,  
  // KEYENCD2=H,

Where my public key is called MyEKMServerJCEKS and the 3rd party's public key 
is called CompayXPublicKeyJCEKS that I had imported into my system.

My system is setup to use the JCERACFKS keystore for encryption with E05 Tape 
Drives in a TS3500.

The KEYENCD2=H is where the HASH is handled?

Lizette
 



>
>>I have not worked with this yet.  My 3rd party wants me to use HASH 
>instead of Dataclas for encrypting a tape. (I think I understood that 
>correctly???)
>
>>So what is the difference between using a HASH KEY and a DATACLAS with 
>EKM?
>
>>I am reading the books, but I still get lost in them. 
>
>Lizette, 
>
>maybe there's been some sort of misunderstanding.... HASH is a MODE of 
>using a KEY to encrypt data on tape; the other one is LABEL. 
>Usually you use HASH when are encrypting data using a PUBLIC certificate 
>coming from a partner.... 
>
>You can declare HASH mode in SMS dataclas or in DD JCL. 
>
>Hope this helps.
>
>

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