2013-03-20 14:18:07

by Horia Geantă

[permalink] [raw]
Subject: [PATCH] Revert "crypto: caam - add IPsec ESN support"

This reverts commit 891104ed008e8646c7860fe5bc70b0aac55dcc6c
(upstream: 891104ed008e8646c7860fe5bc70b0aac55dcc6c).

Current IPsec ESN implementation for authencesn(cbc(aes), hmac(sha))
(separate encryption and integrity algorithms) does not conform
to RFC4303.

ICV is generated by hashing the sequence
SPI, SeqNum-High, SeqNum-Low, IV, Payload
instead of
SPI, SeqNum-Low, IV, Payload, SeqNum-High.

Cc: <[email protected]> # 3.8, 3.7
Reported-by: Chaoxing Lin <[email protected]>
Signed-off-by: Horia Geanta <[email protected]>
---
drivers/crypto/caam/caamalg.c | 27 ++-------------------------
drivers/crypto/caam/compat.h | 1 -
2 files changed, 2 insertions(+), 26 deletions(-)

diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index b2a0a07..cf268b1 100644
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -1650,11 +1650,7 @@ struct caam_alg_template {
};

static struct caam_alg_template driver_algs[] = {
- /*
- * single-pass ipsec_esp descriptor
- * authencesn(*,*) is also registered, although not present
- * explicitly here.
- */
+ /* single-pass ipsec_esp descriptor */
{
.name = "authenc(hmac(md5),cbc(aes))",
.driver_name = "authenc-hmac-md5-cbc-aes-caam",
@@ -2217,9 +2213,7 @@ static int __init caam_algapi_init(void)
for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
/* TODO: check if h/w supports alg */
struct caam_crypto_alg *t_alg;
- bool done = false;

-authencesn:
t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]);
if (IS_ERR(t_alg)) {
err = PTR_ERR(t_alg);
@@ -2233,25 +2227,8 @@ authencesn:
dev_warn(ctrldev, "%s alg registration failed\n",
t_alg->crypto_alg.cra_driver_name);
kfree(t_alg);
- } else {
+ } else
list_add_tail(&t_alg->entry, &priv->alg_list);
- if (driver_algs[i].type == CRYPTO_ALG_TYPE_AEAD &&
- !memcmp(driver_algs[i].name, "authenc", 7) &&
- !done) {
- char *name;
-
- name = driver_algs[i].name;
- memmove(name + 10, name + 7, strlen(name) - 7);
- memcpy(name + 7, "esn", 3);
-
- name = driver_algs[i].driver_name;
- memmove(name + 10, name + 7, strlen(name) - 7);
- memcpy(name + 7, "esn", 3);
-
- done = true;
- goto authencesn;
- }
- }
}
if (!list_empty(&priv->alg_list))
dev_info(ctrldev, "%s algorithms registered in /proc/crypto\n",
diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h
index cf15e78..762aeff 100644
--- a/drivers/crypto/caam/compat.h
+++ b/drivers/crypto/caam/compat.h
@@ -23,7 +23,6 @@
#include <linux/types.h>
#include <linux/debugfs.h>
#include <linux/circ_buf.h>
-#include <linux/string.h>
#include <net/xfrm.h>

#include <crypto/algapi.h>
--
1.7.7.6


2013-03-20 14:15:08

by Horia Geantă

[permalink] [raw]
Subject: [PATCH] Revert "crypto: talitos - add IPsec ESN support"

This reverts commit e763eb699be723fb41af818118068c6b3afdaf8d
(upstream: 891104ed008e8646c7860fe5bc70b0aac55dcc6c).

Current IPsec ESN implementation for authencesn(cbc(aes), hmac(sha))
(separate encryption and integrity algorithms) does not conform
to RFC4303.

ICV is generated by hashing the sequence
SPI, SeqNum-High, SeqNum-Low, IV, Payload
instead of
SPI, SeqNum-Low, IV, Payload, SeqNum-High.

Cc: <[email protected]> # 3.8, 3.7
Reported-by: Chaoxing Lin <[email protected]>
Signed-off-by: Horia Geanta <[email protected]>
---
drivers/crypto/talitos.c | 30 ++----------------------------
1 files changed, 2 insertions(+), 28 deletions(-)

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 09b184a..5b2b5e6 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -38,7 +38,6 @@
#include <linux/spinlock.h>
#include <linux/rtnetlink.h>
#include <linux/slab.h>
-#include <linux/string.h>

#include <crypto/algapi.h>
#include <crypto/aes.h>
@@ -1974,11 +1973,7 @@ struct talitos_alg_template {
};

static struct talitos_alg_template driver_algs[] = {
- /*
- * AEAD algorithms. These use a single-pass ipsec_esp descriptor.
- * authencesn(*,*) is also registered, although not present
- * explicitly here.
- */
+ /* AEAD algorithms. These use a single-pass ipsec_esp descriptor */
{ .type = CRYPTO_ALG_TYPE_AEAD,
.alg.crypto = {
.cra_name = "authenc(hmac(sha1),cbc(aes))",
@@ -2820,9 +2815,7 @@ static int talitos_probe(struct platform_device *ofdev)
if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
struct talitos_crypto_alg *t_alg;
char *name = NULL;
- bool authenc = false;

-authencesn:
t_alg = talitos_alg_alloc(dev, &driver_algs[i]);
if (IS_ERR(t_alg)) {
err = PTR_ERR(t_alg);
@@ -2837,8 +2830,6 @@ authencesn:
err = crypto_register_alg(
&t_alg->algt.alg.crypto);
name = t_alg->algt.alg.crypto.cra_driver_name;
- authenc = authenc ? !authenc :
- !(bool)memcmp(name, "authenc", 7);
break;
case CRYPTO_ALG_TYPE_AHASH:
err = crypto_register_ahash(
@@ -2851,25 +2842,8 @@ authencesn:
dev_err(dev, "%s alg registration failed\n",
name);
kfree(t_alg);
- } else {
+ } else
list_add_tail(&t_alg->entry, &priv->alg_list);
- if (authenc) {
- struct crypto_alg *alg =
- &driver_algs[i].alg.crypto;
-
- name = alg->cra_name;
- memmove(name + 10, name + 7,
- strlen(name) - 7);
- memcpy(name + 7, "esn", 3);
-
- name = alg->cra_driver_name;
- memmove(name + 10, name + 7,
- strlen(name) - 7);
- memcpy(name + 7, "esn", 3);
-
- goto authencesn;
- }
- }
}
}
if (!list_empty(&priv->alg_list))
--
1.7.7.6

2013-03-20 14:26:14

by Horia Geantă

[permalink] [raw]
Subject: Re: [PATCH] Revert "crypto: caam - add IPsec ESN support"

On 3/20/2013 4:15 PM, Horia Geanta wrote:
> This reverts commit 891104ed008e8646c7860fe5bc70b0aac55dcc6c
> (upstream: 891104ed008e8646c7860fe5bc70b0aac55dcc6c).

This line is not needed.
Will resend this with commit message updated.
Sorry for the noise.

2013-03-20 14:28:56

by Horia Geantă

[permalink] [raw]
Subject: Re: [PATCH] Revert "crypto: talitos - add IPsec ESN support"

On 3/20/2013 4:15 PM, Horia Geanta wrote:
> This reverts commit e763eb699be723fb41af818118068c6b3afdaf8d
> (upstream: 891104ed008e8646c7860fe5bc70b0aac55dcc6c).

This line is not needed.
Will resend this with commit message updated.
Sorry for the noise.