[PATCH v2 6/9] crypto: inside-secure - improve the skcipher token
From: Antoine Tenart <hidden>
Date: 2018-03-19 08:25:32
Also in:
lkml
Subsystem:
crypto api, inside secure crypto driver, the rest · Maintainers:
Herbert Xu, "David S. Miller", Antoine Tenart, Linus Torvalds
The token used for encryption and decryption of skcipher algorithms sets its stat field to "last packet". As it's a cipher only algorithm, there is not hash operation and thus the "last hash" bit should be set to tell the internal engine no hash operation should be performed. This does not fix a bug, but improves the token definition to follow exactly what's advised by the datasheet. Signed-off-by: Antoine Tenart <redacted> --- drivers/crypto/inside-secure/safexcel_cipher.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 17a7725a6f6d..bafb60505fab 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c@@ -58,7 +58,8 @@ static void safexcel_cipher_token(struct safexcel_cipher_ctx *ctx, token[0].opcode = EIP197_TOKEN_OPCODE_DIRECTION; token[0].packet_length = length; - token[0].stat = EIP197_TOKEN_STAT_LAST_PACKET; + token[0].stat = EIP197_TOKEN_STAT_LAST_PACKET | + EIP197_TOKEN_STAT_LAST_HASH; token[0].instructions = EIP197_TOKEN_INS_LAST | EIP197_TOKEN_INS_TYPE_CRYTO | EIP197_TOKEN_INS_TYPE_OUTPUT;
--
2.14.3