diff options
Diffstat (limited to 'pbl/decomp.c')
| -rw-r--r-- | pbl/decomp.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/pbl/decomp.c b/pbl/decomp.c index 72a162309a..ef713a6c74 100644 --- a/pbl/decomp.c +++ b/pbl/decomp.c @@ -6,6 +6,10 @@ */ #include <common.h> +#include <crypto/sha.h> +#include <crypto/pbl-sha.h> +#include <digest.h> +#include <asm/sections.h> #include <pbl.h> #include <debug_ll.h> @@ -54,3 +58,38 @@ void pbl_barebox_uncompress(void *dest, void *compressed_start, unsigned int len NULL, NULL, dest, NULL, errorfn); } + +int pbl_barebox_verify(void *compressed_start, unsigned int len, void *hash, + unsigned int hash_len) +{ + struct sha256_state sha_state = { 0 }; + struct digest d = { .ctx = &sha_state }; + char computed_hash[SHA256_DIGEST_SIZE]; + int i; + char *char_hash = hash; + + if (hash_len != SHA256_DIGEST_SIZE) + return -1; + + sha256_init(&d); + sha256_update(&d, compressed_start, len); + sha256_final(&d, computed_hash); + if (IS_ENABLED(CONFIG_DEBUG_LL)) { + putc_ll('C'); + putc_ll('H'); + putc_ll('\n'); + for (i = 0; i < SHA256_DIGEST_SIZE; i++) { + puthex_ll(computed_hash[i]); + putc_ll('\n'); + } + putc_ll('I'); + putc_ll('H'); + putc_ll('\n'); + for (i = 0; i < SHA256_DIGEST_SIZE; i++) { + puthex_ll(char_hash[i]); + putc_ll('\n'); + } + } + + return memcmp(hash, computed_hash, SHA256_DIGEST_SIZE); +} |