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Code Issues Releases Wiki Activity

Fix sign tool TLV alignment padding.

pull/418/head
David Garske 2024-03-07 10:55:15 -08:00 committed by Daniele Lacamera
parent 2826f70ca7
commit 01e22edb34
1 changed files with 7 additions and 9 deletions
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16
tools/keytools/sign.c
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@ -69,7 +69,9 @@ static inline int fp_truncate(FILE *f, size_t len)
#define MAX_SRC_SIZE (1 << 24)
#ifndef MAX_CUSTOM_TLVS
#define MAX_CUSTOM_TLVS (16)
#endif
#include <wolfssl/wolfcrypt/settings.h>
#include <wolfssl/wolfcrypt/asn.h>
@ -1082,11 +1084,10 @@ static int make_header_ex(int is_diff, uint8_t *pubkey, uint32_t pubkey_sz,
if (CMD.custom_tlvs > 0) {
uint32_t i;
for (i = 0; i < CMD.custom_tlvs; i++) {
if (CMD.custom_tlv[i].len == 8) {
/* This field requires 8-byte alignment */
while((header_idx % 8) != 4)
header_idx++;
}
/* require 8-byte alignment */
while ((header_idx % 8) != 0)
header_idx++;
if (CMD.custom_tlv[i].buffer == NULL) {
header_append_tag(header, &header_idx, CMD.custom_tlv[i].tag,
CMD.custom_tlv[i].len, &CMD.custom_tlv[i].val);
@ -1095,13 +1096,10 @@ static int make_header_ex(int is_diff, uint8_t *pubkey, uint32_t pubkey_sz,
CMD.custom_tlv[i].len, CMD.custom_tlv[i].buffer);
}
}
/* Align for next field */
while ((header_idx % 4) != 0)
header_idx++;
}
/* Add padding bytes. Sha-3 val field requires 8-byte alignment */
while ((header_idx % 8) != 4)
while ((header_idx % 8) != 0)
header_idx++;
/* Calculate hashes */