1164   SIZE = 16  variable in AvbDescriptor
1176     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1180           struct.unpack(self.FORMAT_STRING, data[0:self.SIZE]))
1181       self.data = data[self.SIZE:self.SIZE + num_bytes_following]
1249   SIZE = 32  variable in AvbPropertyDescriptor
1264     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1268        value_size) = struct.unpack(self.FORMAT_STRING, data[0:self.SIZE])
1270           self.SIZE - 16 + key_size + 1 + value_size + 1, 8)
1275         self.key = data[self.SIZE:(self.SIZE + key_size)].decode('utf-8')
1279       self.value = data[(self.SIZE + key_size + 1):(self.SIZE + key_size + 1 +
1311         self.SIZE + len(key_encoded) + len(self.value) + 2 - 16)
1364   SIZE = 120 + RESERVED  variable in AvbHashtreeDescriptor
1395     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1403                                                        data[0:self.SIZE])
1405           self.SIZE - 16 + partition_name_len + salt_len + root_digest_len, 8)
1414             (self.SIZE + o):(self.SIZE + o + partition_name_len)
1420       self.salt = data[(self.SIZE + o):(self.SIZE + o + salt_len)]
1422       self.root_digest = data[(self.SIZE + o):(self.SIZE + o + root_digest_len)]
1479     num_bytes_following = (self.SIZE + len(partition_name_encoded)
1571   SIZE = 72 + RESERVED  variable in AvbHashDescriptor
1591     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1597                                                   data[0:self.SIZE])
1599           self.SIZE - 16 + partition_name_len + salt_len + digest_len, 8)
1607             (self.SIZE + o):(self.SIZE + o + partition_name_len)
1613       self.salt = data[(self.SIZE + o):(self.SIZE + o + salt_len)]
1615       self.digest = data[(self.SIZE + o):(self.SIZE + o + digest_len)]
1650     num_bytes_following = (self.SIZE + len(partition_name_encoded) +
1711   SIZE = 24  variable in AvbKernelCmdlineDescriptor
1729     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1733           struct.unpack(self.FORMAT_STRING, data[0:self.SIZE]))
1734       expected_size = round_to_multiple(self.SIZE - 16 + kernel_cmdline_length,
1742             self.SIZE:(self.SIZE + kernel_cmdline_length)].decode('utf-8')
1767     num_bytes_following = (self.SIZE + len(kernel_cmd_encoded) - 16)
1808   SIZE = 28 + RESERVED  variable in AvbChainPartitionDescriptor
1825     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
1830        public_key_len, _) = struct.unpack(self.FORMAT_STRING, data[0:self.SIZE])
1832           self.SIZE - 16 + partition_name_len + public_key_len, 8)
1839             (self.SIZE + o):(self.SIZE + o + partition_name_len)
1845       self.public_key = data[(self.SIZE + o):(self.SIZE + o + public_key_len)]
1874         self.SIZE + len(partition_name_encoded) + len(self.public_key) - 16)
1974   SIZE = 64  variable in AvbFooter
1994     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
2066   SIZE = 256  variable in AvbVBMetaHeader
2095     assert struct.calcsize(self.FORMAT_STRING) == self.SIZE
2368     footer_blob_with_padding = (b'\0' * (image.block_size - AvbFooter.SIZE) +
2420     key_offset = (header.SIZE +
2441     o.write('Header Block:             {} bytes\n'.format(AvbVBMetaHeader.SIZE))
2467       key_metadata_offset = (header.SIZE +
2541     vbmeta_blob = image.read(header.SIZE
2552       key_offset = AvbVBMetaHeader.SIZE
2669     size = (header.SIZE + header.authentication_data_block_size +
2684         ch_size = (ch_header.SIZE + ch_header.authentication_data_block_size +
2759     image.seek(image.image_size - AvbFooter.SIZE)
2761       footer = AvbFooter(image.read(AvbFooter.SIZE))
2771     h = AvbVBMetaHeader(image.read(AvbVBMetaHeader.SIZE))
2773     auth_block_offset = vbmeta_offset + AvbVBMetaHeader.SIZE
2794     image.seek(image.image_size - AvbFooter.SIZE)
2796       footer = AvbFooter(image.read(AvbFooter.SIZE))
2806     h = AvbVBMetaHeader(image.read(AvbVBMetaHeader.SIZE))
2809     data_size = AvbVBMetaHeader.SIZE
3271     if image.image_size >= AvbFooter.SIZE:
3272       image.seek(image.image_size - AvbFooter.SIZE)
3274         footer = AvbFooter(image.read(AvbFooter.SIZE))
3323       footer_blob_with_padding = (b'\0' * (image.block_size - AvbFooter.SIZE) +
3423     if image.image_size >= AvbFooter.SIZE:
3424       image.seek(image.image_size - AvbFooter.SIZE)
3426         footer = AvbFooter(image.read(AvbFooter.SIZE))
3540             b'\0' * (image.block_size - AvbFooter.SIZE) + footer_blob)
3668     if image.image_size >= AvbFooter.SIZE:
3669       image.seek(image.image_size - AvbFooter.SIZE)
3671         footer = AvbFooter(image.read(AvbFooter.SIZE))
3817             b'\0' * (image.block_size - AvbFooter.SIZE) + footer_blob)