LibreCrypt is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best Linux alternative is VeraCrypt, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to LibreCrypt and many of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to LibreCrypt are TrueCrypt, LUKS, CipherShed and eCryptfs.
Ensure your data's security by encrypting entire partitions, storage devices, or system drives with VeraCrypt. Benefit from transparent and automatic real-time encryption, hardware acceleration on modern processors, and robust security algorithms that are resistant to brute-force attacks.
[TrueCrypt is not exactly "Open Source", but the source is available. See the reviews to get more information.]
LUKS is the standard for Linux hard disk encryption. By providing a standard on-disk-format, it does not only facilitate compatibility among distributions, but also provides secure management of multiple user passwords.
CipherShed is a program that can be used to create encrypted files or encrypt entire drives (including USB flash drives and external HDDs).
EncFS provides an encrypted filesystem in user-space. It runs without any special permissions and uses the FUSE library and Linux kernel module to provide the filesystem interface. You can find links to source and binary releases below.
The Gnome Encfs Manager is an easy to use manager and mounter for encfs stashes. It allows you to create encrypted directories, any file that is placed in such a directory will be encrypted.
S.S.E. File Encryptor is a cross-platform encrypter/decrypter of files and folders.
If your computer were ever to be stolen, are you certain that your personal information cannot be discovered? Jetico’s BestCrypt software automatically encrypts your files so that nobody can read the data unless they have the right password or keys.
SecurStick is a free portable application that lets you carry encrypted files on your USB drive. You can use the drive on any computer to access and modify those files WITHOUT needing any administrator privileges.
The realcrypt application in the RPM Fusion repo is an encryption application based on truecrypt, freely available at http://www.truecrypt.org/. It differs from truecrypt in only the following ways:
DCrypt is an encryption and decryption tool that combines in a smart way multiple algorithms. The combination of multiple strong algorithms makes it much more difficult for hackers to get the plain content of the encrypted file without the password.
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File and folder encryption only. No OTFE capabilities.