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lib: sha1: Add support for hardware specific sha1_process

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Mark sha1_process as weak to allow hardware specific implementation.
Add parameter to support for multiple blocks processing.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
This commit is contained in:
Loic Poulain 2022-06-01 20:26:27 +02:00 committed by Tom Rini
parent c316ee674f
commit 8201b8066a
1 changed files with 19 additions and 7 deletions
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26
lib/sha1.c
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@ -25,6 +25,8 @@
#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
@ -65,7 +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;
@ -219,6 +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
*/
@ -242,17 +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);