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-fix TOTP calculation

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Christian Grothoff 2023-05-10 01:13:45 +02:00
parent 5f9c3021db
commit cc34502ac1
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GPG Key ID: 939E6BE1E29FC3CC
1 changed files with 1 additions and 1 deletions
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src/util/crypto_confirmation.c
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@ -102,7 +102,7 @@ compute_totp (struct GNUNET_TIME_Timestamp ts,
offset = hmac[sizeof (hmac) - 1] & 0x0f; offset = hmac[sizeof (hmac) - 1] & 0x0f;
for (int count = 0; count < 4; count++) for (int count = 0; count < 4; count++)
code |= hmac[offset + 3 - count] << (8 * count); code |= ((uint32_t) hmac[offset + 3 - count]) << (8 * count);
code &= 0x7fffffff; code &= 0x7fffffff;
/* always use 8 digits (maximum) */ /* always use 8 digits (maximum) */
code = code % 100000000; code = code % 100000000;