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crypto: picoxcell - don't leak pointers to authenc keys 

In spacc_aead_setkey we save pointers to the authenc keys in a
local variable of type struct crypto_authenc_keys and we don't
zeroize it after use. Fix this and don't leak pointers to the
authenc keys.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Tudor-Dan Ambarus 2018-03-23 12:42:22 +02:00 committed by Herbert Xu
parent 0e7da29d6c
commit a664b4b140
1 changed files with 2 additions and 0 deletions
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2
drivers/crypto/picoxcell_crypto.c
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@ -499,10 +499,12 @@ static int spacc_aead_setkey(struct crypto_aead *tfm, const u8 *key,
memcpy(ctx->hash_ctx, keys.authkey, keys.authkeylen);
ctx->hash_key_len = keys.authkeylen;
memzero_explicit(&keys, sizeof(keys));
return 0;
badkey:
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
memzero_explicit(&keys, sizeof(keys));
return -EINVAL;
}