AssetData contains three Bill-Of-Materials files (they can be viewed with lsbom and created with mkbom). pre.bom states filesystem before update, post.bom - after and payload.bom describes the patches to be applied during update process. It also contains boot folder where bootchain-related files are stored (iBoot, kernelcache, etc.), payloadv2 or payload (depends on PackageVersion value of AssetData/Info.plist file) and Info.plist file which describes the update. Info.plist file from AssetData folder contains PackageVersion field which can be 1.0, 2.0 or 3.0.
All updates with 2.0 package version have payload folder inside AssetData instead of archive.cpio.gz file from 1.0 updates. It contains only two folders: added folder with unencrypted files which are to be added during update process and patches folder. patches folder is used to store BSDIFF40 patches that are applied to files during update process. They can be easily applied manually with bsdiff utility. patches folder file hierarchy is similar to devices root file system (ex. patch for /sbin/launchctl will be found at AssetData/payload/patches/sbin/launchctl). AssetData also contains payload.bom.signature that replaces Info.plist.signature. payload.bom.signature is used to check payload.bom which contains CRC32 of all files inside AssetData folder.
For example, you can use this module for passwordless sudo authentication with a Kerberos ticket. For additional security in an IdM environment, you can configure SSSD to grant access only to users with specific authentication indicators in their tickets, such as users that have authenticated with a smart card or a one-time password.
Multipath TCP (MPTCP) improves resource usage within the network and resilience to network failure. For example, with Multipath TCP on the RHEL server, smartphones with MPTCP v1 enabled can connect to an application running on the server and switch between Wi-Fi and cellular networks without interrupting the connection to the server.
hide-referer is an alternate spelling of hide-referrer and the two can be can be freely substituted with each other. ("referrer" is the correct English spelling, however the HTTP specification has a bug - it requires it to be spelled as "referer".)
"reset-to-request-time" overwrites the value of the "Last-Modified:" header with the current time. You could use this option together with hide-if-modified-since to further customize your random range.
The preferred parameter here is "randomize". It is safe to use, as long as the time settings are more or less correct. If the server sets the "Last-Modified:" header to the time of the request, the random range becomes zero and the value stays the same. Therefore you should later randomize it a second time with hided-if-modified-since, just to be sure.
Use of this permission should be undertaken with caution in order toprevent leaking of sensitive data. We advise users to test this solutionthoroughly before using it in production. It is also important to applya proper workflow when limiting access to items. For instance, creatingan export set first and later applying restrictions to items is apotential leak of information, because the export set could haveincluded privileged items before any restrictions were applied. Also, ifa user with access to privileged items adds them to an export package,they become accessible to all other users with access to that case andwith the exporting permission. Moreover, using this permission requiresmuch more processing power to be used on filtering intermediate resultsfor various parts of the case database. It can also invalidate some ofcaches that are put in place to speed up delivering results. Thereforeone must be aware that using this permission on larger cases can causethem to behave much different comparing to when this permission is notused. Finally, using permissions to hide privileged items does not meanthat those items are removed from the case. They are still present inthe case database, but simply excluded from the results and hidden inthe user interface for those users not entitled to view them. Thereforea clever attacker could still try to gain access to privileged data byattempting various attacks or malicious usage of communication channels.We advise to conduct a thorough security audit before giving case accessto untrusted parties. 2b1af7f3a8