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ecc-sos: Fix SOS handling in do_unprotect.

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* agent/cvt-openpgp.c (do_unprotect): Exclude the case when
the first byte is zero.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2020-05-20 18:33:51 +09:00
parent bc3d003e00
commit 43c0c19fca
1 changed files with 10 additions and 9 deletions
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agent/cvt-openpgp.c
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@ -451,6 +451,7 @@ do_unprotect (const char *passphrase,
nbytes = (nbits+7)/8;
nbits = nbytes * 8;
if (*buffer)
if (nbits >= 8 && !(*buffer & 0x80))
if (--nbits >= 7 && !(*buffer & 0x40))
if (--nbits >= 6 && !(*buffer & 0x20))