1 files changed, 84 insertions, 0 deletions
diff --git a/drivers/mxc/security/rng/fsl_shw_hash.c b/drivers/mxc/security/rng/fsl_shw_hash.c
new file mode 100644
index 000000000000..56b2dcc34035
--- /dev/null
+++ b/drivers/mxc/security/rng/fsl_shw_hash.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2005-2010 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+
+/*!
+ * @file fsl_shw_hash.c
+ *
+ * This file implements Cryptographic Hashing functions of the FSL SHW API
+ * for Sahara.  This does not include HMAC.
+ */
+
+#include "shw_driver.h"
+
+/* REQ-S2LRD-PINTFC-API-BASIC-HASH-005 */
+/*!
+ * Hash a stream of data with a cryptographic hash algorithm.
+ *
+ * The flags in the @a hash_ctx control the operation of this function.
+ *
+ * Hashing functions work on 64 octets of message at a time.  Therefore, when
+ * any partial hashing of a long message is performed, the message @a length of
+ * each segment must be a multiple of 64.  When ready to
+ * #FSL_HASH_FLAGS_FINALIZE the hash, the @a length may be any value.
+ *
+ * With the #FSL_HASH_FLAGS_INIT and #FSL_HASH_FLAGS_FINALIZE flags on, a
+ * one-shot complete hash, including padding, will be performed.  The @a length
+ * may be any value.
+ *
+ * The first octets of a data stream can be hashed by setting the
+ * #FSL_HASH_FLAGS_INIT and #FSL_HASH_FLAGS_SAVE flags.  The @a length must be
+ * a multiple of 64.
+ *
+ * The flag #FSL_HASH_FLAGS_LOAD is used to load a context previously saved by
+ * #FSL_HASH_FLAGS_SAVE.  The two in combination will allow a (multiple-of-64
+ * octets) 'middle sequence' of the data stream to be hashed with the
+ * beginning.  The @a length must again be a multiple of 64.
+ *
+ * Since the flag #FSL_HASH_FLAGS_LOAD is used to load a context previously
+ * saved by #FSL_HASH_FLAGS_SAVE, the #FSL_HASH_FLAGS_LOAD and
+ * #FSL_HASH_FLAGS_FINALIZE flags, used together, can be used to finish the
+ * stream.  The @a length may be any value.
+ *
+ * If the user program wants to do the padding for the hash, it can leave off
+ * the #FSL_HASH_FLAGS_FINALIZE flag.  The @a length must then be a multiple of
+ * 64 octets.
+ *
+ * @param      user_ctx  A user context from #fsl_shw_register_user().
+ * @param[in,out] hash_ctx Hashing algorithm and state of the cipher.
+ * @param      msg       Pointer to the data to be hashed.
+ * @param      length    Length, in octets, of the @a msg.
+ * @param[out] result    If not null, pointer to where to store the hash
+ *                       digest.
+ * @param      result_len Number of octets to store in @a result.
+ *
+ * @return    A return code of type #fsl_shw_return_t.
+ */
+fsl_shw_return_t fsl_shw_hash(fsl_shw_uco_t * user_ctx,
+			      fsl_shw_hco_t * hash_ctx,
+			      const uint8_t * msg,
+			      uint32_t length,
+			      uint8_t * result, uint32_t result_len)
+{
+	fsl_shw_return_t ret = FSL_RETURN_ERROR_S;
+
+	/* Unused */
+	(void)user_ctx;
+	(void)hash_ctx;
+	(void)msg;
+	(void)length;
+	(void)result;
+	(void)result_len;
+
+	return ret;
+}