fscrypt.git - Go tool for managing Linux filesystem encryption

Age	Commit message (Collapse)	Author
2017-06-28	Change error handling to new package	Joe Richey joerichey@google.com
	This commit changes the error handing for the crypto, filesystem, metadata, pam, and util packages to use the error handling library github.com/pkg/errors. This means elimination of the FSError type, an increased use of wrapping errors (as opposed to logging), switching on the Cause() of an error (as opposed to its value), and improving our integration tests involving TEST_FILESYSTEM_ROOT. This commit also fixes a few bugs with the keyring code to ensure that our {Find\|Remove\|Insert}PolicyKey functions are always operating on the same keyring. The check for filesystem support has been moved from the filesystem package to the metadata package. Finally, the API for the filesystem package has been slightly modified: * filesystem.AllFilesystems() now returns all the filesystems in sorted order * certain path methods are now public O_SYNC is also removed for writing the metadata. We don't get that much from syncing the metadata, as the actual file data could also be corrupted by and IO error. The sync operation is also occasionally very slow (~3 seconds) and can be unfriendly to battery life. Change-Id: I392c2655141714b16dfdbc84ac09780072be2cf0
2017-05-31	crypto: tests, errors, and descriptor computation	Joe Richey joerichey@google.com
	This changes the crypto package so it now builds in light of the changes to the util and metadata package. This commit also improves the error handling, adds tests, and makes it so recovery keys now correspond to Policy keys (as they are used to recover a directory in the absence of any metadata). The only feature addition here is the ability to compute descriptors. For backwards compatibility, we keep the same descriptor algorithm used before (double SHA512). Change-Id: Ia2b53c6e85ce65c57595e6823d3c4c92219bc8dc
2017-05-02	crypto: add secure random reader using getrandom	Joe Richey
	This commit adds in RandReader, a cryptographically secure io.Reader that will fail when the os has insufficient randomness. This is done using the getrandom() syscall in non-blocking mode. see: http://man7.org/linux/man-pages/man2/getrandom.2.html Any kernel new enough to have filesystem encryption will also have this syscall. This RandReader is preferable to the one provided by the standard library in crypto/rand. See the bugs: https://github.com/golang/go/issues/11833 https://github.com/golang/go/issues/19274 This will be removed when go updates the crypto/rand implementation. Change-Id: Icccaf07bc6011b95cd31a5c268e7486807dcffe2