Using the routine CSNBOWH on IBM I - MD5

I am trying to run the routine CSNBOWH on IBM I using COBOL ILE on the pubblic server PUB400. To do the call I used various definition taken from Internet/manuals. This is the last one I used:

     01  HASHING-TEXT.                                           
         03 WK-RETURN-CODE          PIC S9(9)  COMP-5 VALUE ZERO.
         03 REASON-CODE             PIC S9(9)  COMP-5 VALUE ZERO.
         03 EXIT-DATA-LENGTH        PIC S9(9)  COMP-5 VALUE 4.   
         03 EXIT-DATA               PIC X(4)   VALUE SPACE.      
         03 RULE-ARRAY-COUNT        PIC S9(9)  COMP-5 VALUE 1.   
         03 RULE-ARRAY              PIC X(8)   VALUE 'MD5'.      
         03 TEXT-LENGTH             PIC S9(9)  COMP-5 VALUE 64.  
         03 TEXT-MESSAGE            PIC X(64)  VALUE SPACE.      
         03 CHAINING-VECTOR-LENGTH  PIC S9(9)  COMP-5 VALUE 128. 
         03 CHAINING-VECTOR         PIC X(128) VALUE SPACE.      
         03 HASH-LENGTH             PIC S9(9)  COMP-5 VALUE 16.  
         03 HASH                    PIC X(16).                   


 CALL  'CSNBOWH'  USING     WK-RETURN-CODE         
                             REASON-CODE           
                             EXIT-DATA-LENGTH      
                             EXIT-DATA             
                             RULE-ARRAY-COUNT      
                             RULE-ARRAY            
                             TEXT-LENGTH           
                             TEXT-MESSAGE          
                             CHAINING-VECTOR-LENGTH
                             CHAINING-VECTOR       
                             HASH-LENGTH           
                             HASH.

However I always get the message MCH3401 "The message text for 'MCH3401' follows: 'Cannot resolve to object CSNBOWH. Type and Subtype X'0201' Authority X'0000'.'"

What you think I don't have the access to this routine? I try to use also the routines CSNBOWH1 CSNEOWH and CSNEOWH1 with the same result.

I read various manuals on IBM platform and I was thinking that I could use CSNBOWH routine to do hashing. The manual are the following: https://www.ibm.com/docs/en/zos/3.1.0?topic=vdiam-one-way-hash-generate-csnbowh-csnbowh1-csneowh-csneowh1 IBM i 7.3 Security Cryptography

However, I am not sure I am in the right direction. If you know an other way in COBOL to get the MD5 will be good to know.

Thank you

Solution

You need the following installed on your system

5770-SS1 5050 – IBM i Option 35, CCA Cryptographic Service Provider

It is not installed by default. A WRKOBJ *ALL/CSNBOWH *PGM will tell, or when QSYSINC/H MBR(CSUCINCL) exists.

pub400 doesn't have it, maybe Holger can be persuaded?

Good reference (albeit with C code) IBM i 7.3 Security Cryptography

Update:

You asked for another possibility to create MD5 hashes.

There is C code on the Net that can be used for that. For Example: https://gist.github.com/creationix/4710780

That code would need to be ported to the IBM i (AS400); I personally see no big problem with that.