28 Oct, 2005

1 commit

• c09f98271   [ARM] 2930/1: optimized sha1 implementation for ARM ... Browse Code »

  Patch from Nicolas Pitre

  Here's an ARM assembly SHA1 implementation to replace the default C
  version. It is approximately 50% faster than the generic C version. On
  an XScale processor running at 400MHz:
  generic C version: 9.8 MB/s
  my version: 14.5 MB/s
  This code is useful to quite a few callers in the tree:
  crypto/sha1.c: sha_transform(sctx->state, sctx->buffer, temp);
  crypto/sha1.c: sha_transform(sctx->state, &data[i], temp);
  drivers/char/random.c: sha_transform(buf, (__u8 *)r->pool+i, buf + 5);
  drivers/char/random.c: sha_transform(buf, (__u8 *)data, buf + 5);
  net/ipv4/syncookies.c: sha_transform(tmp + 16, (__u8 *)tmp, tmp + 16 + 5);

  Signed-off-by: Nicolas Pitre
  Seems to work fine on big-endian as well.

  Signed-off-by: Lennert Buytenhek
  Signed-off-by: Russell King

  Nicolas Pitre

  2005-10-28 22:26:40 +0800