Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (125 commits)
  [CRYPTO] twofish: Merge common glue code
  [CRYPTO] hifn_795x: Fixup container_of() usage
  [CRYPTO] cast6: inline bloat--
  [CRYPTO] api: Set default CRYPTO_MINALIGN to unsigned long long
  [CRYPTO] tcrypt: Make xcbc available as a standalone test
  [CRYPTO] xcbc: Remove bogus hash/cipher test
  [CRYPTO] xcbc: Fix algorithm leak when block size check fails
  [CRYPTO] tcrypt: Zero axbuf in the right function
  [CRYPTO] padlock: Only reset the key once for each CBC and ECB operation
  [CRYPTO] api: Include sched.h for cond_resched in scatterwalk.h
  [CRYPTO] salsa20-asm: Remove unnecessary dependency on CRYPTO_SALSA20
  [CRYPTO] tcrypt: Add select of AEAD
  [CRYPTO] salsa20: Add x86-64 assembly version
  [CRYPTO] salsa20_i586: Salsa20 stream cipher algorithm (i586 version)
  [CRYPTO] gcm: Introduce rfc4106
  [CRYPTO] api: Show async type
  [CRYPTO] chainiv: Avoid lock spinning where possible
  [CRYPTO] seqiv: Add select AEAD in Kconfig
  [CRYPTO] scatterwalk: Handle zero nbytes in scatterwalk_map_and_copy
  [CRYPTO] null: Allow setkey on digest_null 
  ...

1 files changed, 63 insertions, 2 deletions

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 8383282de1dd..e65cb50cf4af 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -472,7 +472,7 @@ int crypto_check_attr_type(struct rtattr **tb, u32 type)
 }
 EXPORT_SYMBOL_GPL(crypto_check_attr_type);
 
-struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask)
+const char *crypto_attr_alg_name(struct rtattr *rta)
 {
 	struct crypto_attr_alg *alga;
 
@@ -486,7 +486,21 @@ struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask)
 	alga = RTA_DATA(rta);
 	alga->name[CRYPTO_MAX_ALG_NAME - 1] = 0;
 
-	return crypto_alg_mod_lookup(alga->name, type, mask);
+	return alga->name;
+}
+EXPORT_SYMBOL_GPL(crypto_attr_alg_name);
+
+struct crypto_alg *crypto_attr_alg(struct rtattr *rta, u32 type, u32 mask)
+{
+	const char *name;
+	int err;
+
+	name = crypto_attr_alg_name(rta);
+	err = PTR_ERR(name);
+	if (IS_ERR(name))
+		return ERR_PTR(err);
+
+	return crypto_alg_mod_lookup(name, type, mask);
 }
 EXPORT_SYMBOL_GPL(crypto_attr_alg);
 
@@ -605,6 +619,53 @@ int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm)
 }
 EXPORT_SYMBOL_GPL(crypto_tfm_in_queue);
 
+static inline void crypto_inc_byte(u8 *a, unsigned int size)
+{
+	u8 *b = (a + size);
+	u8 c;
+
+	for (; size; size--) {
+		c = *--b + 1;
+		*b = c;
+		if (c)
+			break;
+	}
+}
+
+void crypto_inc(u8 *a, unsigned int size)
+{
+	__be32 *b = (__be32 *)(a + size);
+	u32 c;
+
+	for (; size >= 4; size -= 4) {
+		c = be32_to_cpu(*--b) + 1;
+		*b = cpu_to_be32(c);
+		if (c)
+			return;
+	}
+
+	crypto_inc_byte(a, size);
+}
+EXPORT_SYMBOL_GPL(crypto_inc);
+
+static inline void crypto_xor_byte(u8 *a, const u8 *b, unsigned int size)
+{
+	for (; size; size--)
+		*a++ ^= *b++;
+}
+
+void crypto_xor(u8 *dst, const u8 *src, unsigned int size)
+{
+	u32 *a = (u32 *)dst;
+	u32 *b = (u32 *)src;
+
+	for (; size >= 4; size -= 4)
+		*a++ ^= *b++;
+
+	crypto_xor_byte((u8 *)a, (u8 *)b, size);
+}
+EXPORT_SYMBOL_GPL(crypto_xor);
+
 static int __init crypto_algapi_init(void)
 {
 	crypto_init_proc();