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scd: Fix count_sos_bits handling.

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* scd/app-openpgp.c (count_sos_bits): Handle an exceptional case.

Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>
This commit is contained in:
NIIBE Yutaka 2021-03-15 17:00:56 +09:00
parent 373b52e69a
commit f482e4bd12
1 changed files with 3 additions and 3 deletions
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6
scd/app-openpgp.c
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@ -723,7 +723,7 @@ count_sos_bits (const unsigned char *a, size_t len)
unsigned int n = len * 8;
int i;
if (*a == 0)
if (len == 0 || *a == 0)
return n;
for (i=7; i && !(*a & (1<<i)); i--)
@ -912,11 +912,11 @@ store_fpr (app_t app, int keynumber, u32 timestamp, unsigned char *fpr,
*p++ = nbits;
}
else if (i == 1)
{
{
nbits = count_sos_bits (m[i], mlen[i]);
*p++ = nbits >> 8;
*p++ = nbits;
}
}
memcpy (p, m[i], mlen[i]);
p += mlen[i];
}