lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Wed, 8 Jul 2020 13:14:28 -0400
To:     Satya Tangirala <>
        Eric Biggers <>,
        Jaegeuk Kim <>
Subject: Re: [PATCH v4 2/4] fscrypt: add inline encryption support

On Thu, Jul 02, 2020 at 01:56:05AM +0000, Satya Tangirala wrote:
> Add support for inline encryption to fs/crypto/.  With "inline
> encryption", the block layer handles the decryption/encryption as part
> of the bio, instead of the filesystem doing the crypto itself via
> Linux's crypto API. This model is needed in order to take advantage of
> the inline encryption hardware present on most modern mobile SoCs.
> To use inline encryption, the filesystem needs to be mounted with
> '-o inlinecrypt'. Blk-crypto will then be used instead of the traditional
> filesystem-layer crypto whenever possible to encrypt the contents
> of any encrypted files in that filesystem. Fscrypt still provides the key
> and IV to use, and the actual ciphertext on-disk is still the same;
> therefore it's testable using the existing fscrypt ciphertext verification
> tests.
> Note that since blk-crypto has a fallback to Linux's crypto API, and
> also supports all the encryption modes currently supported by fscrypt,
> this feature is usable and testable even without actual inline
> encryption hardware.
> Per-filesystem changes will be needed to set encryption contexts when
> submitting bios and to implement the 'inlinecrypt' mount option.  This
> patch just adds the common code.
> Co-developed-by: Eric Biggers <>
> Signed-off-by: Eric Biggers <>
> Signed-off-by: Satya Tangirala <>
> Reviewed-by: Jaegeuk Kim <>
> Reviewed-by: Eric Biggers <>

Reviewed-by: Theodore Ts'o <>

Powered by blists - more mailing lists