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g10: fix cmp_public_key. 

* g10/free-packet.c (cmp_public_keys): Compare opaque
data at the first entry of the array when it's unknown algo.

--

(forwardported from 2.0 commit 43429c7869)

GnuPG-bug-id: 1962
This commit is contained in:
NIIBE Yutaka 2015-04-30 17:02:42 +09:00
parent 01a2a61bc4
commit f77fd572db
1 changed files with 8 additions and 5 deletions
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13
g10/free-packet.c
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@ -434,11 +434,14 @@ cmp_public_keys( PKT_public_key *a, PKT_public_key *b )
return -1;
n = pubkey_get_npkey( b->pubkey_algo );
if( !n )
return -1; /* can't compare due to unknown algorithm */
for(i=0; i < n; i++ ) {
if( mpi_cmp( a->pkey[i], b->pkey[i] ) )
return -1;
if( !n ) { /* unknown algorithm, rest is in opaque MPI */
if( mpi_cmp( a->pkey[0], b->pkey[0] ) )
return -1; /* can't compare due to unknown algorithm */
} else {
for(i=0; i < n; i++ ) {
if( mpi_cmp( a->pkey[i], b->pkey[i] ) )
return -1;
}
}
return 0;