Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto update from Herbert Xu:
 "API:

   - Crypto self tests can now be disabled at boot/run time.
   - Add async support to algif_aead.

  Algorithms:

   - A large number of fixes to MPI from Nicolai Stange.
   - Performance improvement for HMAC DRBG.

  Drivers:

   - Use generic crypto engine in omap-des.
   - Merge ppc4xx-rng and crypto4xx drivers.
   - Fix lockups in sun4i-ss driver by disabling IRQs.
   - Add DMA engine support to ccp.
   - Reenable talitos hash algorithms.
   - Add support for Hisilicon SoC RNG.
   - Add basic crypto driver for the MXC SCC.

  Others:

   - Do not allocate crypto hash tfm in NORECLAIM context in ecryptfs"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (77 commits)
  crypto: qat - change the adf_ctl_stop_devices to void
  crypto: caam - fix caam_jr_alloc() ret code
  crypto: vmx - comply with ABIs that specify vrsave as reserved.
  crypto: testmgr - Add a flag allowing the self-tests to be disabled at runtime.
  crypto: ccp - constify ccp_actions structure
  crypto: marvell/cesa - Use dma_pool_zalloc
  crypto: qat - make adf_vf_isr.c dependant on IOV config
  crypto: qat - Fix typo in comments
  lib: asn1_decoder - add MODULE_LICENSE("GPL")
  crypto: omap-sham - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Use dma_request_chan() for requesting DMA channel
  crypto: omap-aes - Use dma_request_chan() for requesting DMA channel
  crypto: omap-des - Integrate with the crypto engine framework
  crypto: s5p-sss - fix incorrect usage of scatterlists api
  crypto: s5p-sss - Fix missed interrupts when working with 8 kB blocks
  crypto: s5p-sss - Use common BIT macro
  crypto: mxc-scc - fix unwinding in mxc_scc_crypto_register()
  crypto: mxc-scc - signedness bugs in mxc_scc_ablkcipher_req_init()
  crypto: talitos - fix ahash algorithms registration
  crypto: ccp - Ensure all dependencies are specified
  ...

1 files changed, 25 insertions, 14 deletions

diff --git a/crypto/drbg.c b/crypto/drbg.c
index 1b86310d..0a3538f6 100644
--- a/crypto/drbg.c
+++ b/crypto/drbg.c
@@ -592,8 +592,10 @@ static const struct drbg_state_ops drbg_ctr_ops = {
  ******************************************************************/
 
 #if defined(CONFIG_CRYPTO_DRBG_HASH) || defined(CONFIG_CRYPTO_DRBG_HMAC)
-static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
-			   unsigned char *outval, const struct list_head *in);
+static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
+			   const struct list_head *in);
+static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
+				  const unsigned char *key);
 static int drbg_init_hash_kernel(struct drbg_state *drbg);
 static int drbg_fini_hash_kernel(struct drbg_state *drbg);
 #endif /* (CONFIG_CRYPTO_DRBG_HASH || CONFIG_CRYPTO_DRBG_HMAC) */
@@ -619,9 +621,11 @@ static int drbg_hmac_update(struct drbg_state *drbg, struct list_head *seed,
 	LIST_HEAD(seedlist);
 	LIST_HEAD(vdatalist);
 
-	if (!reseed)
+	if (!reseed) {
 		/* 10.1.2.3 step 2 -- memset(0) of C is implicit with kzalloc */
 		memset(drbg->V, 1, drbg_statelen(drbg));
+		drbg_kcapi_hmacsetkey(drbg, drbg->C);
+	}
 
 	drbg_string_fill(&seed1, drbg->V, drbg_statelen(drbg));
 	list_add_tail(&seed1.list, &seedlist);
@@ -641,12 +645,13 @@ static int drbg_hmac_update(struct drbg_state *drbg, struct list_head *seed,
 			prefix = DRBG_PREFIX1;
 		/* 10.1.2.2 step 1 and 4 -- concatenation and HMAC for key */
 		seed2.buf = &prefix;
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->C, &seedlist);
+		ret = drbg_kcapi_hash(drbg, drbg->C, &seedlist);
 		if (ret)
 			return ret;
+		drbg_kcapi_hmacsetkey(drbg, drbg->C);
 
 		/* 10.1.2.2 step 2 and 5 -- HMAC for V */
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &vdatalist);
+		ret = drbg_kcapi_hash(drbg, drbg->V, &vdatalist);
 		if (ret)
 			return ret;
 
@@ -681,7 +686,7 @@ static int drbg_hmac_generate(struct drbg_state *drbg,
 	while (len < buflen) {
 		unsigned int outlen = 0;
 		/* 10.1.2.5 step 4.1 */
-		ret = drbg_kcapi_hash(drbg, drbg->C, drbg->V, &datalist);
+		ret = drbg_kcapi_hash(drbg, drbg->V, &datalist);
 		if (ret)
 			return ret;
 		outlen = (drbg_blocklen(drbg) < (buflen - len)) ?
@@ -796,7 +801,7 @@ static int drbg_hash_df(struct drbg_state *drbg,
 	while (len < outlen) {
 		short blocklen = 0;
 		/* 10.4.1 step 4.1 */
-		ret = drbg_kcapi_hash(drbg, NULL, tmp, entropylist);
+		ret = drbg_kcapi_hash(drbg, tmp, entropylist);
 		if (ret)
 			goto out;
 		/* 10.4.1 step 4.2 */
@@ -874,7 +879,7 @@ static int drbg_hash_process_addtl(struct drbg_state *drbg,
 	list_add_tail(&data1.list, &datalist);
 	list_add_tail(&data2.list, &datalist);
 	list_splice_tail(addtl, &datalist);
-	ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &datalist);
+	ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist);
 	if (ret)
 		goto out;
 
@@ -907,7 +912,7 @@ static int drbg_hash_hashgen(struct drbg_state *drbg,
 	while (len < buflen) {
 		unsigned int outlen = 0;
 		/* 10.1.1.4 step hashgen 4.1 */
-		ret = drbg_kcapi_hash(drbg, NULL, dst, &datalist);
+		ret = drbg_kcapi_hash(drbg, dst, &datalist);
 		if (ret) {
 			len = ret;
 			goto out;
@@ -956,7 +961,7 @@ static int drbg_hash_generate(struct drbg_state *drbg,
 	list_add_tail(&data1.list, &datalist);
 	drbg_string_fill(&data2, drbg->V, drbg_statelen(drbg));
 	list_add_tail(&data2.list, &datalist);
-	ret = drbg_kcapi_hash(drbg, NULL, drbg->scratchpad, &datalist);
+	ret = drbg_kcapi_hash(drbg, drbg->scratchpad, &datalist);
 	if (ret) {
 		len = ret;
 		goto out;
@@ -1600,14 +1605,20 @@ static int drbg_fini_hash_kernel(struct drbg_state *drbg)
 	return 0;
 }
 
-static int drbg_kcapi_hash(struct drbg_state *drbg, const unsigned char *key,
-			   unsigned char *outval, const struct list_head *in)
+static void drbg_kcapi_hmacsetkey(struct drbg_state *drbg,
+				  const unsigned char *key)
+{
+	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
+
+	crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
+}
+
+static int drbg_kcapi_hash(struct drbg_state *drbg, unsigned char *outval,
+			   const struct list_head *in)
 {
 	struct sdesc *sdesc = (struct sdesc *)drbg->priv_data;
 	struct drbg_string *input = NULL;
 
-	if (key)
-		crypto_shash_setkey(sdesc->shash.tfm, key, drbg_statelen(drbg));
 	crypto_shash_init(&sdesc->shash);
 	list_for_each_entry(input, in, list)
 		crypto_shash_update(&sdesc->shash, input->buf, input->len);