diff options
| author | Eric Biggers <ebiggers@google.com> | 2019-07-22 18:26:23 +0200 |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-08-13 04:33:50 +0200 |
| commit | add890c9f9d2d1d79184ded72f23b37b164fc673 (patch) | |
| tree | cb982f8ac59675b4435c74b10571bc75a0ceb965 /fs/verity | |
| parent | fs-verity: implement FS_IOC_MEASURE_VERITY ioctl (diff) | |
| download | linux-add890c9f9d2d1d79184ded72f23b37b164fc673.tar.xz linux-add890c9f9d2d1d79184ded72f23b37b164fc673.zip | |
fs-verity: add SHA-512 support
Add SHA-512 support to fs-verity. This is primarily a demonstration of
the trivial changes needed to support a new hash algorithm in fs-verity;
most users will still use SHA-256, due to the smaller space required to
store the hashes. But some users may prefer SHA-512.
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Diffstat (limited to 'fs/verity')
| -rw-r--r-- | fs/verity/fsverity_private.h | 2 | ||||
| -rw-r--r-- | fs/verity/hash_algs.c | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/fs/verity/fsverity_private.h b/fs/verity/fsverity_private.h index eaa2b3b93bbf..02a547f0667c 100644 --- a/fs/verity/fsverity_private.h +++ b/fs/verity/fsverity_private.h @@ -29,7 +29,7 @@ struct ahash_request; * Largest digest size among all hash algorithms supported by fs-verity. * Currently assumed to be <= size of fsverity_descriptor::root_hash. */ -#define FS_VERITY_MAX_DIGEST_SIZE SHA256_DIGEST_SIZE +#define FS_VERITY_MAX_DIGEST_SIZE SHA512_DIGEST_SIZE /* A hash algorithm supported by fs-verity */ struct fsverity_hash_alg { diff --git a/fs/verity/hash_algs.c b/fs/verity/hash_algs.c index 7df1d67742b8..31e6d7d2389a 100644 --- a/fs/verity/hash_algs.c +++ b/fs/verity/hash_algs.c @@ -17,6 +17,11 @@ struct fsverity_hash_alg fsverity_hash_algs[] = { .digest_size = SHA256_DIGEST_SIZE, .block_size = SHA256_BLOCK_SIZE, }, + [FS_VERITY_HASH_ALG_SHA512] = { + .name = "sha512", + .digest_size = SHA512_DIGEST_SIZE, + .block_size = SHA512_BLOCK_SIZE, + }, }; /** |