ima: Fix ima digest hash table key calculation

Function hash_long() accepts unsigned long, while currently only one byte
is passed from ima_hash_key(), which calculates a key for ima_htable.

Given that hashing the digest does not give clear benefits compared to
using the digest itself, remove hash_long() and return the modulus
calculated on the first two bytes of the digest with the number of slots.
Also reduce the depth of the hash table by doubling the number of slots.

Cc: [email protected]
Fixes: 3323eec921ef ("integrity: IMA as an integrity service provider")
Co-developed-by: Roberto Sassu <[email protected]>
Signed-off-by: Roberto Sassu <[email protected]>
Signed-off-by: Krzysztof Struczynski <[email protected]>
Acked-by: [email protected] (big endian system concerns)
Signed-off-by: Mimi Zohar <[email protected]>

0 files changed, 0 insertions, 0 deletions