diff options
author | Alex Cope <alexcope@google.com> | 2016-11-08 17:16:58 -0800 |
---|---|---|
committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-11-13 17:45:06 +0800 |
commit | d266f44b5b517025249c4200eaa4bb892facc9a5 (patch) | |
tree | bb737a9faa382e57260dc658df5489f3235b4013 /crypto | |
parent | 8edda7d22a95caddcc66431e4564c7d03568da4d (diff) | |
download | linux-d266f44b5b517025249c4200eaa4bb892facc9a5.tar.gz linux-d266f44b5b517025249c4200eaa4bb892facc9a5.tar.xz |
crypto: gf128mul - remove dead gf128mul_64k_lle code
This code is unlikely to be useful in the future because transforms
don't know how often keys will be changed, new algorithms are unlikely
to use lle representation, and tables should be replaced with
carryless multiplication instructions when available.
Signed-off-by: Alex Cope <alexcope@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto')
-rw-r--r-- | crypto/gf128mul.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/crypto/gf128mul.c b/crypto/gf128mul.c index 5276607c72d0..57c85ddbd852 100644 --- a/crypto/gf128mul.c +++ b/crypto/gf128mul.c @@ -263,48 +263,6 @@ EXPORT_SYMBOL(gf128mul_bbe); * t[1][BYTE] contains g*x^8*BYTE * .. * t[15][BYTE] contains g*x^120*BYTE */ -struct gf128mul_64k *gf128mul_init_64k_lle(const be128 *g) -{ - struct gf128mul_64k *t; - int i, j, k; - - t = kzalloc(sizeof(*t), GFP_KERNEL); - if (!t) - goto out; - - for (i = 0; i < 16; i++) { - t->t[i] = kzalloc(sizeof(*t->t[i]), GFP_KERNEL); - if (!t->t[i]) { - gf128mul_free_64k(t); - t = NULL; - goto out; - } - } - - t->t[0]->t[128] = *g; - for (j = 64; j > 0; j >>= 1) - gf128mul_x_lle(&t->t[0]->t[j], &t->t[0]->t[j + j]); - - for (i = 0;;) { - for (j = 2; j < 256; j += j) - for (k = 1; k < j; ++k) - be128_xor(&t->t[i]->t[j + k], - &t->t[i]->t[j], &t->t[i]->t[k]); - - if (++i >= 16) - break; - - for (j = 128; j > 0; j >>= 1) { - t->t[i]->t[j] = t->t[i - 1]->t[j]; - gf128mul_x8_lle(&t->t[i]->t[j]); - } - } - -out: - return t; -} -EXPORT_SYMBOL(gf128mul_init_64k_lle); - struct gf128mul_64k *gf128mul_init_64k_bbe(const be128 *g) { struct gf128mul_64k *t; @@ -357,19 +315,6 @@ void gf128mul_free_64k(struct gf128mul_64k *t) } EXPORT_SYMBOL(gf128mul_free_64k); -void gf128mul_64k_lle(be128 *a, struct gf128mul_64k *t) -{ - u8 *ap = (u8 *)a; - be128 r[1]; - int i; - - *r = t->t[0]->t[ap[0]]; - for (i = 1; i < 16; ++i) - be128_xor(r, r, &t->t[i]->t[ap[i]]); - *a = *r; -} -EXPORT_SYMBOL(gf128mul_64k_lle); - void gf128mul_64k_bbe(be128 *a, struct gf128mul_64k *t) { u8 *ap = (u8 *)a; |