AES256 -AAD -GCM/Nopadding

Hello,

Please find the application note and sample code on Synergey SCE modules:

https://www.renesas.com/us/en/document/apn/sce-hal-module-guide-application-project

www.renesas.cn/.../sce-hal-module-guide-application-project

Hello , AZ_Renesas 

              could you please share any sample code for AES 256 -GCM- AAD with zeropadding encrypt / decrypt 

s5d9_hal_aes_gcm.zip

Please try this.

Thank you  CS Yep , i will try and update the result .

Hello,

We tested this sample code with our own values and found that it goes into an infinite loop. We confirmed the bytes of all values. Key 32-bytes,.IV 12-bytes + padding = 16-bytes,.AAD 16-bytes.

doubts:
1) As you stated in the sample code, all values are sets of keys (.Key,.IV,.AAD)??
2) Is there any relationship between them?
3) If we replace any one key, for example, counter0.key with counter1.key, we get an infinite loop.

Hello,

We tested this sample code with our own values and found that it goes into an infinite loop. We confirmed the bytes of all values. Key 32-bytes,.IV 12-bytes + padding = 16-bytes,.AAD 16-bytes.

doubts:
1) As you stated in the sample code, all values are sets of keys (.Key,.IV,.AAD)??
2) Is there any relationship between them?
3) If we replace any one key, for example, counter0.key with counter1.key, we get an infinite loop.

Those are test vectors from NIST.

Hello , 

          Could you please make some suggestions? 

Yes, I do have a suggestion

Please submit your test codes, worksapce/project. if you needed help. 

Hello , 

             Here is our Test Source code , Please make some suggestions REIN_VGV_S5D9_AES_GCM_AAD.zip

The code runs OK. What is your problem?  If you got this from somebody, please ask him to double check.

The number of bytes is returned from processing the hexadecimal string.   Now you use that number for 32-bit endian change. The number of 32-bits is (length+3)/4. 

Thank you ,  I'll apply the 32-bit endian modification.