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Fix IV calculation for uppercase SD paths

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This commit is contained in:
d0k3 2017-02-05 16:15:38 +01:00
parent e35c87335d
commit 058fd9f528
1 changed files with 5 additions and 3 deletions
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8
source/fs/sddata.c
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@ -63,11 +63,13 @@ FRESULT fx_open (FIL* fp, const TCHAR* path, BYTE mode) {
u8 hashstr[256];
u8 sha256sum[32];
u32 plen = 0;
// poor man's UTF-8 -> UTF-16
// poor man's UTF-8 -> UTF-16 / uppercase -> lowercase
for (plen = 0; plen < 128; plen++) {
hashstr[2*plen] = path[2 + plen];
u8 symbol = path[2 + plen];
if ((symbol >= 'A') && (symbol <= 'Z')) symbol += ('a' - 'A');
hashstr[2*plen] = symbol;
hashstr[2*plen+1] = 0;
if (path[2 + plen] == 0) break;
if (symbol == 0) break;
}
sha_quick(sha256sum, hashstr, (plen + 1) * 2, SHA256_MODE);
for (u32 i = 0; i < 16; i++)