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Merge branch 'bugfix/uecc_antifault' into 'master'

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secure boot: Fix anti-fault value if hash is shorter than curve

See merge request espressif/esp-idf!7940
This commit is contained in:
Angus Gratton
2020-03-18 15:51:09 +08:00
parent 961f461f72 f2d310fea7
commit 99a7581974
1 changed files with 1 additions and 1 deletions
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components/bootloader/subproject/components/micro-ecc/uECC_verify_antifault.c
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@@ -133,7 +133,7 @@ int uECC_verify_antifault(const uint8_t *public_key,
}
/* Curve may be longer than hash, in which case keep reading the rest of the bytes */
for (int w = hash_words; w < curve->num_words; w++) {
vhash_words[w % hash_words] |= rx[w] | r[w];
vhash_words[w % hash_words] |= rx[w] ^ r[w];
}
/* Accept only if v == r. */