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This commit is contained in:
Philippe Teuwen 2022-01-23 20:02:57 +01:00
commit 140a7f34a4
9 changed files with 53 additions and 50 deletions
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10
common/generator.c
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@ -165,10 +165,10 @@ uint32_t ul_ev1_pwdgenE(const uint8_t *uid) {
uint8_t hash[20];
mbedtls_sha1(uid, 7, hash);
uint32_t pwd = 0;
pwd |= ( hash[ hash[0] % 20 ] ) << 24 ;
pwd |= ( hash[ (hash[0] + 5 ) % 20 ] ) << 16;
pwd |= ( hash[ (hash[0] + 13) % 20 ] ) << 8;
pwd |= ( hash[ (hash[0] + 17) % 20 ] );
pwd |= (hash[ hash[0] % 20 ]) << 24 ;
pwd |= (hash[(hash[0] + 5) % 20 ]) << 16;
pwd |= (hash[(hash[0] + 13) % 20 ]) << 8;
pwd |= (hash[(hash[0] + 17) % 20 ]);
return pwd;
}
@ -205,7 +205,7 @@ uint16_t ul_ev1_packgenD(const uint8_t *uid) {
uint16_t ul_ev1_packgenE(const uint8_t *uid) {
uint32_t pwd = ul_ev1_pwdgenE(uid);
return (0xAD << 8 | ((pwd >> 24) & 0xFF) );
return (0xAD << 8 | ((pwd >> 24) & 0xFF));
}