lib: sha1: Add support for hardware specific sha1_process

[platform/kernel/u-boot.git] / lib / sha1.c

diff --git a/lib/sha1.c b/lib/sha1.c
index 05b17a2..e5e42bc 100644 (file)
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -1,23 +1,10 @@
+// SPDX-License-Identifier: LGPL-2.1
 /*
  *  Heiko Schocher, DENX Software Engineering, hs@denx.de.
  *  based on:
  *  FIPS-180-1 compliant SHA-1 implementation
  *
  *  Copyright (C) 2003-2006  Christophe Devine
- *
- *  This library is free software; you can redistribute it and/or
- *  modify it under the terms of the GNU Lesser General Public
- *  License, version 2.1 as published by the Free Software Foundation.
- *
- *  This library is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- *  Lesser General Public License for more details.
- *
- *  You should have received a copy of the GNU Lesser General Public
- *  License along with this library; if not, write to the Free Software
- *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
- *  MA  02110-1301  USA
  */
 /*
  *  The SHA-1 standard was published by NIST in 1993.
@@ -38,6 +25,13 @@
 #include <watchdog.h>
 #include <u-boot/sha1.h>
 
+#include <linux/compiler_attributes.h>
+
+const uint8_t sha1_der_prefix[SHA1_DER_LEN] = {
+       0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e,
+       0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14
+};
+
 /*
  * 32-bit integer manipulation macros (big endian)
  */
@@ -73,7 +67,7 @@ void sha1_starts (sha1_context * ctx)
        ctx->state[4] = 0xC3D2E1F0;
 }
 
-static void sha1_process(sha1_context *ctx, const unsigned char data[64])
+static void __maybe_unused sha1_process_one(sha1_context *ctx, const unsigned char data[64])
 {
        unsigned long temp, W[16], A, B, C, D, E;
 
@@ -227,6 +221,18 @@ static void sha1_process(sha1_context *ctx, const unsigned char data[64])
        ctx->state[4] += E;
 }
 
+__weak void sha1_process(sha1_context *ctx, const unsigned char *data,
+                        unsigned int blocks)
+{
+       if (!blocks)
+               return;
+
+       while (blocks--) {
+               sha1_process_one(ctx, data);
+               data += 64;
+       }
+}
+
 /*
  * SHA-1 process buffer
  */
@@ -250,17 +256,15 @@ void sha1_update(sha1_context *ctx, const unsigned char *input,
 
        if (left && ilen >= fill) {
                memcpy ((void *) (ctx->buffer + left), (void *) input, fill);
-               sha1_process (ctx, ctx->buffer);
+               sha1_process(ctx, ctx->buffer, 1);
                input += fill;
                ilen -= fill;
                left = 0;
        }
 
-       while (ilen >= 64) {
-               sha1_process (ctx, input);
-               input += 64;
-               ilen -= 64;
-       }
+       sha1_process(ctx, input, ilen / 64);
+       input += ilen / 64 * 64;
+       ilen = ilen % 64;
 
        if (ilen > 0) {
                memcpy ((void *) (ctx->buffer + left), (void *) input, ilen);