qiurui
/
rv1126-uboot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

lib: rsa: generate data to be signed 

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I125f61051c9c9604903603ef06cd7f368b48f3d8
This commit is contained in:
Joseph Chen 2020-03-31 15:41:59 +08:00 committed by Jianhong Chen
parent cdd8fbe39e
commit d46373c14f
1 changed files with 26 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
lib/rsa/rsa-sign.c
View File

@ -383,6 +383,30 @@ static void rsa_engine_remove(ENGINE *e)
}
}
/*
* With this data2sign.bin, we can provide it to who real holds the RAS-private
* key to sign current fit image. Then we replace the signature in fit image
* with a valid one.
*/
static void gen_data2sign(const struct image_region region[], int region_count)
{
char *file = "data2sign.bin";
FILE *fd;
int i;
fd = fopen(file, "wb");
if (!fd) {
fprintf(stderr, "Failed to create %s: %s\n",
file, strerror(errno));
return -ENOENT;
}
for (i = 0; i < region_count; i++)
fwrite(region[i].data, region[i].size, 1, fd);
fclose(fd);
}
static int rsa_sign_with_key(RSA *rsa, struct checksum_algo *checksum_algo,
const struct image_region region[], int region_count,
uint8_t **sigp, uint *sig_size)
@ -445,6 +469,8 @@ static int rsa_sign_with_key(RSA *rsa, struct checksum_algo *checksum_algo,
*sigp = sig;
*sig_size = size;
gen_data2sign(region, region_count);
return 0;
err_sign: