From f326e37a210eae051de00c392def0fbca3200356 Mon Sep 17 00:00:00 2001 From: Holger Dengler Date: Fri, 4 Aug 2023 16:02:58 +0200 Subject: s390/pkey: fix PKEY_TYPE_EP11_AES handling for sysfs attributes [ Upstream commit b9352e4b9b9eff949bcc6907b8569b3a1d992f1e ] Commit 'fa6999e326fe ("s390/pkey: support CCA and EP11 secure ECC private keys")' introduced a new PKEY_TYPE_EP11_AES securekey type as a supplement to the existing PKEY_TYPE_EP11 (which won't work in environments with session-bound keys). The pkey EP11 securekey attributes use PKEY_TYPE_EP11_AES (instead of PKEY_TYPE_EP11) keyblobs, to make the generated keyblobs usable also in environments, where session-bound keys are required. There should be no negative impacts to userspace because the internal structure of the keyblobs is opaque. The increased size of the generated keyblobs is reflected by the changed size of the attributes. Fixes: fa6999e326fe ("s390/pkey: support CCA and EP11 secure ECC private keys") Signed-off-by: Holger Dengler Reviewed-by: Ingo Franzki Signed-off-by: Heiko Carstens Signed-off-by: Sasha Levin --- drivers/s390/crypto/pkey_api.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/s390/crypto/pkey_api.c b/drivers/s390/crypto/pkey_api.c index 79568da580c6..2b92ec20ed68 100644 --- a/drivers/s390/crypto/pkey_api.c +++ b/drivers/s390/crypto/pkey_api.c @@ -1947,7 +1947,7 @@ static struct attribute_group ccacipher_attr_group = { * (i.e. off != 0 or count < key blob size) -EINVAL is returned. * This function and the sysfs attributes using it provide EP11 key blobs * padded to the upper limit of MAXEP11AESKEYBLOBSIZE which is currently - * 320 bytes. + * 336 bytes. */ static ssize_t pkey_ep11_aes_attr_read(enum pkey_key_size keybits, bool is_xts, char *buf, loff_t off, @@ -1976,7 +1976,7 @@ static ssize_t pkey_ep11_aes_attr_read(enum pkey_key_size keybits, card = apqns[i] >> 16; dom = apqns[i] & 0xFFFF; rc = ep11_genaeskey(card, dom, keybits, 0, buf, &keysize, - PKEY_TYPE_EP11); + PKEY_TYPE_EP11_AES); if (rc == 0) break; } @@ -1987,7 +1987,7 @@ static ssize_t pkey_ep11_aes_attr_read(enum pkey_key_size keybits, keysize = MAXEP11AESKEYBLOBSIZE; buf += MAXEP11AESKEYBLOBSIZE; rc = ep11_genaeskey(card, dom, keybits, 0, buf, &keysize, - PKEY_TYPE_EP11); + PKEY_TYPE_EP11_AES); if (rc == 0) return 2 * MAXEP11AESKEYBLOBSIZE; } -- cgit v1.2.3