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To protect the user’s information, blowfish encrypted data is authenticated with the SHA-1 hashing algorithm. KDE Wallet manager’s blowfish encryption provides faster encryption compared to Khufu, RC5, DES, IDEA, and Trip-DES. Blowfish encrypts at a rate of 18 clock cycles per byte in 32-bit microprocessors.
On a Linux system, the boot partition (/boot) may be encrypted if the bootloader itself supports LUKS (e.g. GRUB). This is undertaken to prevent tampering with the Linux kernel. However, the first stage bootloader or an EFI system partition cannot be encrypted (see Full disk encryption#The boot key problem). [14]
Pacman, a package manager written specifically for Arch Linux, is used to install, remove and update software packages. [13] An alternative is the Arch User Repository (AUR), which is the community-driven repository for Arch Linux; AUR packages can be downloaded and built, or installed through an AUR 'helper'.
A wide-block disk encryption algorithm, Adiantum, was added in 5.0, and its AES-based cousin HCTR2 in 6.0. The Linux Crypto API includes support for most popular block ciphers and hash functions, which are all usable with dm-crypt. Crypted FS support include LUKS (versions 1 and 2) volumes, loop-AES, TrueCrypt/VeraCrypt (since Linux kernel 3.13 ...
The device mapper is a framework provided by the Linux kernel for mapping physical block devices onto higher-level virtual block devices.It forms the foundation of the logical volume manager (LVM), software RAIDs and dm-crypt disk encryption, and offers additional features such as file system snapshots.
Crypto API is a cryptography framework in the Linux kernel, for various parts of the kernel that deal with cryptography, such as IPsec and dm-crypt.It was introduced in kernel version 2.5.45 [1] and has since expanded to include essentially all popular block ciphers and hash functions.
ext4 (fourth extended filesystem) is a journaling file system for Linux, developed as the successor to ext3.. ext4 was initially a series of backward-compatible extensions to ext3, many of them originally developed by Cluster File Systems for the Lustre file system between 2003 and 2006, meant to extend storage limits and add other performance improvements. [4]
chroot is an operation on Unix and Unix-like operating systems that changes the apparent root directory for the current running process and its children.A program that is run in such a modified environment cannot name (and therefore normally cannot access) files outside the designated directory tree.