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scd: Add workaround for ECC attribute on Yubikey.

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* scd/app-openpgp.c (parse_algorithm_attribute): Skip possibly bogus
octet in a key attribute.

--

GnuPG-bug-id: 5963
Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2022-05-06 18:15:31 +09:00
parent bbcca7357b
commit 054d14887e
1 changed files with 2 additions and 1 deletions
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3
scd/app-openpgp.c
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@ -6226,7 +6226,8 @@ parse_algorithm_attribute (app_t app, int keyno)
app->app_local->keyattr[keyno].ecc.algo = *buffer; app->app_local->keyattr[keyno].ecc.algo = *buffer;
app->app_local->keyattr[keyno].ecc.flags = 0; app->app_local->keyattr[keyno].ecc.flags = 0;
if (buffer[buflen-1] == 0x00 || buffer[buflen-1] == 0xff) if (APP_CARD(app)->cardtype == CARDTYPE_YUBIKEY
|| buffer[buflen-1] == 0x00 || buffer[buflen-1] == 0xff)
{ /* Found "pubkey required"-byte for private key template. */ { /* Found "pubkey required"-byte for private key template. */
oidlen--; oidlen--;
if (buffer[buflen-1] == 0xff) if (buffer[buflen-1] == 0xff)