Hello everyone,
We are trying to encrypt an array in the RAM with the ECB mode of the DES(Data Encryption Standart) that is supported by the DESA in SEC. According to DESA, encryption result is stored on the DESA Context Register. When we get the value of the DESA Context Register, we get 0 all times in this case. When we look at the job termination status word/error codes in this case, it states that the job has no error, it is completed successfully. According to SEC Manual Reference, SEC categorizes the algorithms into two groups. These are Class1 algorithms and Class2 algorithms. When we try to get the hash value of the this array with any Class2 algorithms such as MD5 or SHA-1, we get the hash value of this array successfully. When we look at the job termination status word/error codes in this case, it also states that the job is completed successfully. Our job description format as follows:
Job descripor header - key command - algorithm command - fifo load command - store command
In summary, when we use the Class1 algorithms, we can not the results but there is no error in the job termination status word/error codes. Is there any differences of working mechanisms of the Class1 and Class2 algorithms. Why we can not the results from the Context Register Registers of the any Class2 algorithms such as DESA or AESA. Can you help us?
Thank you for your attention,
Sincerely,
