AM2632-Q1: otfaecc_structs.py is not found

'''
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'''
'''Basic structs of OTFA & ECCM module'''

from enum import Enum
from construct import Struct, Int16ul, Int16ub, \
Int32ul, Int32ub, Int64ul, Int64ub, Bytes, IfThenElse, If
from struct import pack, unpack

OTFA_MODE_AUTH = 'auth'
OTFA_MODE_ENCRYPT= 'encrypt'
OTFA_MODE_GCM = 'gcm'
OTFA_MODE_ENCRYPT_AUTH = 'both'
OTFA_MODE_NO_ENCRYPT = 'na'

OTFA_MAC_SIZE_4B = 1
OTFA_MAC_SIZE_8B = 2
OTFA_MAC_SIZE_12B = 3
OTFA_MAC_SIZE_16B = 4

OTFA_AES_KEY_SIZE_128BIT = 1
OTFA_AES_KEY_SIZE_256BIT = 2

class otfaRegionConfig:
    def __init__(self) -> None:
        self.size:int = 0
        self.start:int = 0
        self.authKey:bytearray = bytearray(8)
        self.encKey:bytearray = bytearray(8)
        self.iv:bytearray = bytearray(8)
        self.cryptoMode:int = OTFA_MODE_NO_ENCRYPT
        self.eccEnable:bool = False 

    def packBytes(self):
        _frm = "<IIII32s32s32s"
        c = 0
        if(self.cryptoMode == OTFA_MODE_AUTH):
            c = 0
        elif(self.cryptoMode == OTFA_MODE_ENCRYPT):
            c = 1
        elif(self.cryptoMode == OTFA_MODE_GCM):
            c = 2
        elif(self.cryptoMode == OTFA_MODE_NO_ENCRYPT):
            c = 3
        else:
            c = 4
        return pack(_frm, int(self.size), int(self.start), c, 0 if self.eccEnable == False else 1, bytes(self.authKey), bytes(self.encKey), bytes(self.iv))

class OTFAConfig:
    def __init__(self) -> None:
        self.regionConfigList:list[otfaRegionConfig] = list()
        self.mac_align: bool = True
        self.mac_size:int = OTFA_MAC_SIZE_4B
        self.aes_key_size:int =  OTFA_AES_KEY_SIZE_128BIT
        self.isEnabled: bool = False 

    def packBytes(self):
        rgnBytes = bytes()
        for rgn in self.regionConfigList:
            rgnBytes = rgnBytes + rgn.packBytes()
        _frm = ">bbbbbxxx" + str(len(rgnBytes)) + "s"
        return pack(_frm, self.isEnabled, self.mac_align, self.mac_size, 1 if self.aes_key_size == OTFA_AES_KEY_SIZE_128BIT else 0, len(self.regionConfigList),rgnBytes)