C header translation

[TouEnMasm]

Ok,the one posted by Greenhorn seems to work:

.const
CRYPT_AES_256_KEY_STATE STRUCT
Key            byte 32 dup(?)
IV            byte 16 dup(?)
EncryptionState   byte 15 dup(16 dup(?))
DecryptionState   byte 15 dup(16 dup(?))
Feedback         byte 16 dup(?)
CRYPT_AES_256_KEY_STATE ENDS
.data
truc CRYPT_AES_256_KEY_STATE <>

mov al,byte ptr truc.EncryptionState [2  *16*sizeof(byte)]

OK

work also

   lea rbx,truc.EncryptionState
   mov r11,10   ;row  data
   shl r11,4 ;* 16                       [rbx + r11 * 16] 16 scale factor not allowed 1,2,4,8
   movq xmm0, [rbx + r11 ]
   mov rax ,sizeof truc