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-rw-r--r--Makefile2
-rw-r--r--crc32.c143
-rw-r--r--hal_internal.h23
3 files changed, 167 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index a246828..d500641 100644
--- a/Makefile
+++ b/Makefile
@@ -74,7 +74,7 @@ endif
# just "building this is harmless even if we don't use it."
OBJ += errorstrings.o hash.o asn1.o ecdsa.o rsa.o xdr.o slip.o
-OBJ += rpc_api.o rpc_hash.o uuid.o rpc_pkcs1.o
+OBJ += rpc_api.o rpc_hash.o uuid.o rpc_pkcs1.o crc32.o
# Object files to build when we're on a platform with direct access
# to our hardware (Verilog) cores.
diff --git a/crc32.c b/crc32.c
new file mode 100644
index 0000000..417dfa8
--- /dev/null
+++ b/crc32.c
@@ -0,0 +1,143 @@
+/*
+ * crc32.c
+ * -------
+ * CRC-32 implementation. This is internal within libhal.
+ *
+ * Copyright (c) 2016, NORDUnet A/S All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the NORDUnet nor the names of its contributors may
+ * be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+ * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * This code was generated by the nifty pycrc package. pycrc itself
+ * (well, the version used for this) is under the MIT license, but the
+ * author explictly disclaims ownership of the generated code, so
+ * we're free to do whatever we want with it. For simplicity, we've
+ * placed it under the same copyright we use for everything else.
+ *
+ * This file contains two different implementations of the same API,
+ * corresponding to different speed/size tradeoffs. These were
+ * generated with the commands:
+ *
+ * pycrc.py --model crc-32 --algorithm table-driven --std c99 --symbol-prefix hal_crc32_ --generate h
+ * pycrc.py --model crc-32 --algorithm table-driven --std c99 --symbol-prefix hal_crc32_ --generate c --table-idx-width 4
+ * pycrc.py --model crc-32 --algorithm table-driven --std c99 --symbol-prefix hal_crc32_ --generate c --table-idx-width 8
+ */
+
+/*
+ * Generated on Mon Sep 12 15:36:31 2016, by pycrc v0.9, https://pycrc.org using the configuration:
+ * Width = 32
+ * Poly = 0x04c11db7
+ * Xor_In = 0xffffffff
+ * ReflectIn = True
+ * Xor_Out = 0xffffffff
+ * ReflectOut = True
+ * Algorithm = table-driven
+ */
+
+#include "hal.h"
+#include "hal_internal.h"
+
+#ifndef HAL_CRC32_TINY
+#define HAL_CRC32_TINY 0
+#endif
+
+#if HAL_CRC32_TINY
+
+static const hal_crc32_t crc_table[16] = {
+ 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c,
+ 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c
+};
+
+hal_crc32_t hal_crc32_update(hal_crc32_t crc, const void *data, size_t data_len)
+{
+ const unsigned char *d = (const unsigned char *)data;
+ unsigned int tbl_idx;
+
+ while (data_len--) {
+ tbl_idx = crc ^ (*d >> (0 * 4));
+ crc = crc_table[tbl_idx & 0x0f] ^ (crc >> 4);
+ tbl_idx = crc ^ (*d >> (1 * 4));
+ crc = crc_table[tbl_idx & 0x0f] ^ (crc >> 4);
+
+ d++;
+ }
+ return crc & 0xffffffff;
+}
+
+#else /* HAL_CRC32_TINY */
+
+static const hal_crc32_t crc_table[256] = {
+ 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
+ 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
+ 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
+ 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
+ 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
+ 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
+ 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
+ 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
+ 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
+ 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
+ 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
+ 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
+ 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
+ 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
+ 0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
+ 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
+ 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
+ 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
+ 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
+ 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
+ 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
+ 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
+ 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
+ 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
+ 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
+ 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
+ 0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
+ 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
+ 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
+ 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
+ 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
+ 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
+};
+
+hal_crc32_t hal_crc32_update(hal_crc32_t crc, const void *data, size_t data_len)
+{
+ const unsigned char *d = (const unsigned char *)data;
+ unsigned int tbl_idx;
+
+ while (data_len--) {
+ tbl_idx = (crc ^ *d) & 0xff;
+ crc = (crc_table[tbl_idx] ^ (crc >> 8)) & 0xffffffff;
+
+ d++;
+ }
+ return crc & 0xffffffff;
+}
+
+#endif /* HAL_CRC32_TINY */
diff --git a/hal_internal.h b/hal_internal.h
index 5e6b939..e92f22a 100644
--- a/hal_internal.h
+++ b/hal_internal.h
@@ -255,6 +255,7 @@ extern hal_error_t hal_rpc_pkcs1_construct_digestinfo(const hal_hash_handle_t ha
/*
* UUID stuff. All UUIDs we use (or are likely to use) are type 4 "random" UUIDs
+ * Some of this may need to move to hal.h.
*/
#define HAL_UUID_TEXT_SIZE (sizeof("00112233-4455-6677-8899-aabbccddeeff"))
@@ -271,6 +272,28 @@ extern hal_error_t hal_uuid_parse(hal_uuid_t *uuid, const char * const string);
extern hal_error_t hal_uuid_format(const hal_uuid_t * const uuid, char *buffer, const size_t buffer_len);
/*
+ * CRC-32 stuff (for flash keystore, etc). Dunno if we want a Verilog
+ * implementation of this, or if it would even be faster than doing it
+ * the main CPU taking I/O overhead and so forth into account.
+ *
+ * These prototypes were generated by pycrc.py, see notes in crc32.c.
+ */
+
+typedef uint32_t hal_crc32_t;
+
+static inline hal_crc32_t hal_crc32_init(void)
+{
+ return 0xffffffff;
+}
+
+extern hal_crc32_t hal_crc32_update(hal_crc32_t crc, const void *data, size_t data_len);
+
+static inline hal_crc32_t hal_crc32_finalize(hal_crc32_t crc)
+{
+ return crc ^ 0xffffffff;
+}
+
+/*
* Keystore API.
*/