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crypto: inside-secure - improve the skcipher token 

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 <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Antoine Tenart 2018-03-19 09:21:18 +01:00 committed by Herbert Xu
parent b89a815975
commit 15f64ee0ae
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/inside-secure/safexcel_cipher.c
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@ -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;