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author | James Morris <james.l.morris@oracle.com> | 2017-12-11 17:01:08 +1100 |
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committer | James Morris <james.l.morris@oracle.com> | 2017-12-11 17:01:08 +1100 |
commit | 4a06f454768a7e11e8f10b900b450786546cbba1 (patch) | |
tree | 149f57c9ce794734883e326d63040b1381dc1a59 /crypto/gf128mul.c | |
parent | fe6ec4634c4b41ea65f055ea709a6f3d5bf67bec (diff) | |
parent | 8dce1988dfaa3668372990f05ee2202d9d9521b5 (diff) | |
download | linux-crypto-4a06f454768a7e11e8f10b900b450786546cbba1.tar.gz linux-crypto-4a06f454768a7e11e8f10b900b450786546cbba1.zip |
Sync to v4.15-rc3 for security subsystem developers to work against.
Diffstat (limited to 'crypto/gf128mul.c')
-rw-r--r-- | crypto/gf128mul.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/crypto/gf128mul.c b/crypto/gf128mul.c index dc012129..24e60195 100644 --- a/crypto/gf128mul.c +++ b/crypto/gf128mul.c @@ -156,6 +156,19 @@ static void gf128mul_x8_bbe(be128 *x) x->b = cpu_to_be64((b << 8) ^ _tt); } +void gf128mul_x8_ble(le128 *r, const le128 *x) +{ + u64 a = le64_to_cpu(x->a); + u64 b = le64_to_cpu(x->b); + + /* equivalent to gf128mul_table_be[b >> 63] (see crypto/gf128mul.c): */ + u64 _tt = gf128mul_table_be[a >> 56]; + + r->a = cpu_to_le64((a << 8) | (b >> 56)); + r->b = cpu_to_le64((b << 8) ^ _tt); +} +EXPORT_SYMBOL(gf128mul_x8_ble); + void gf128mul_lle(be128 *r, const be128 *b) { be128 p[8]; |