diff options
Diffstat (limited to 'meta/recipes-support/libgcrypt/files/0001-Prefetch-GCM-look-up-tables.patch')
-rw-r--r-- | meta/recipes-support/libgcrypt/files/0001-Prefetch-GCM-look-up-tables.patch | 90 |
1 files changed, 0 insertions, 90 deletions
diff --git a/meta/recipes-support/libgcrypt/files/0001-Prefetch-GCM-look-up-tables.patch b/meta/recipes-support/libgcrypt/files/0001-Prefetch-GCM-look-up-tables.patch deleted file mode 100644 index 4df96f0011..0000000000 --- a/meta/recipes-support/libgcrypt/files/0001-Prefetch-GCM-look-up-tables.patch +++ /dev/null @@ -1,90 +0,0 @@ -From 1374254c2904ab5b18ba4a890856824a102d4705 Mon Sep 17 00:00:00 2001 -From: Jussi Kivilinna <jussi.kivilinna@iki.fi> -Date: Sat, 27 Apr 2019 19:33:28 +0300 -Subject: [PATCH 1/3] Prefetch GCM look-up tables - -* cipher/cipher-gcm.c (prefetch_table, do_prefetch_tables) -(prefetch_tables): New. -(ghash_internal): Call prefetch_tables. --- - -Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi> - -Upstream-Status: Backport -[https://github.com/gpg/libgcrypt/commit/1374254c2904ab5b18ba4a890856824a102d4705] - -CVE: CVE-2019-12904 - -Signed-off-by: Yi Zhao <yi.zhao@windriver.com> ---- - cipher/cipher-gcm.c | 33 +++++++++++++++++++++++++++++++++ - 1 file changed, 33 insertions(+) - -diff --git a/cipher/cipher-gcm.c b/cipher/cipher-gcm.c -index c19f09f..11f119a 100644 ---- a/cipher/cipher-gcm.c -+++ b/cipher/cipher-gcm.c -@@ -118,6 +118,34 @@ static const u16 gcmR[256] = { - 0xbbf0, 0xba32, 0xb874, 0xb9b6, 0xbcf8, 0xbd3a, 0xbf7c, 0xbebe, - }; - -+static inline -+void prefetch_table(const void *tab, size_t len) -+{ -+ const volatile byte *vtab = tab; -+ size_t i; -+ -+ for (i = 0; i < len; i += 8 * 32) -+ { -+ (void)vtab[i + 0 * 32]; -+ (void)vtab[i + 1 * 32]; -+ (void)vtab[i + 2 * 32]; -+ (void)vtab[i + 3 * 32]; -+ (void)vtab[i + 4 * 32]; -+ (void)vtab[i + 5 * 32]; -+ (void)vtab[i + 6 * 32]; -+ (void)vtab[i + 7 * 32]; -+ } -+ -+ (void)vtab[len - 1]; -+} -+ -+static inline void -+do_prefetch_tables (const void *gcmM, size_t gcmM_size) -+{ -+ prefetch_table(gcmM, gcmM_size); -+ prefetch_table(gcmR, sizeof(gcmR)); -+} -+ - #ifdef GCM_TABLES_USE_U64 - static void - bshift (u64 * b0, u64 * b1) -@@ -365,6 +393,8 @@ do_ghash (unsigned char *result, const unsigned char *buf, const u32 *gcmM) - #define fillM(c) \ - do_fillM (c->u_mode.gcm.u_ghash_key.key, c->u_mode.gcm.gcm_table) - #define GHASH(c, result, buf) do_ghash (result, buf, c->u_mode.gcm.gcm_table) -+#define prefetch_tables(c) \ -+ do_prefetch_tables(c->u_mode.gcm.gcm_table, sizeof(c->u_mode.gcm.gcm_table)) - - #else - -@@ -430,6 +460,7 @@ do_ghash (unsigned char *hsub, unsigned char *result, const unsigned char *buf) - - #define fillM(c) do { } while (0) - #define GHASH(c, result, buf) do_ghash (c->u_mode.gcm.u_ghash_key.key, result, buf) -+#define prefetch_tables(c) do {} while (0) - - #endif /* !GCM_USE_TABLES */ - -@@ -441,6 +472,8 @@ ghash_internal (gcry_cipher_hd_t c, byte *result, const byte *buf, - const unsigned int blocksize = GCRY_GCM_BLOCK_LEN; - unsigned int burn = 0; - -+ prefetch_tables (c); -+ - while (nblocks) - { - burn = GHASH (c, result, buf); --- -2.7.4 - |