Currently, it is not apparent for userspace users which hash algorithms
require a key and which don't. We have /proc/crypto, so add a field
with this information there.
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@xxxxxxxxxx>
---
crypto/shash.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/crypto/shash.c b/crypto/shash.c
index 2e3433ad9762..d3127a0618f2 100644
--- a/crypto/shash.c
+++ b/crypto/shash.c
@@ -477,6 +477,9 @@ static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg)
seq_printf(m, "type : shash\n");
seq_printf(m, "blocksize : %u\n", alg->cra_blocksize);
seq_printf(m, "digestsize : %u\n", salg->digestsize);
+ seq_printf(m, "needs key : %s\n",
+ crypto_shash_alg_needs_key(salg) ?
+ "yes" : "no");
}
static const struct crypto_type crypto_shash_type = {
--
2.26.2
