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| author | Thomas Huth <thuth@redhat.com> | 2026-09-16 11:50:04 +0200 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2026-09-30 09:33:54 -0700 |
| commit | bde4dcd6cac5cbdaa3144adffeb3a0c1d9bba064 (patch) | |
| tree | 1ebabeda3a48a8f6eb76f1e4b18d1d0a8dbf6556 /lib | |
| parent | 72f4c2eae4036d0d5e63f9aa548c2688f8f99ff1 (diff) | |
| download | linux-bde4dcd6cac5cbdaa3144adffeb3a0c1d9bba064.tar.gz linux-bde4dcd6cac5cbdaa3144adffeb3a0c1d9bba064.zip | |
lib/crypto: aes-xts: Provide function for zeroizing aes_xts_key
In certain cases crypto code functions need to zeroize their local
aes_xts_key structures after use to avoid leaking sensitive material.
Provide an aes_xts_zeroize_key() helper function that e.g. can be
used with __cleanup() to automatically zeroize the struct when it
goes out of scope.
While we're at it, replace the related memzero_explicit() call in
lib/crypto/aes.c with a call to the new helper function.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Link: https://patch.msgid.link/20260916095022.604354-3-thuth@redhat.com
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/crypto/aes.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/crypto/aes.c b/lib/crypto/aes.c index 07c1d912ac36..34ef5deca0a7 100644 --- a/lib/crypto/aes.c +++ b/lib/crypto/aes.c @@ -1223,7 +1223,7 @@ int aes_xts_preparekey(struct aes_xts_key *key, const u8 *in_key, return 0; out_zeroize: - memzero_explicit(key, sizeof(*key)); + aes_xts_zeroize_key(key); return err; } EXPORT_SYMBOL_GPL(aes_xts_preparekey); |