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g10: fix cmp_public_key and cmp_secret_keys.
* g10/free-packet.c (cmp_public_keys, cmp_secret_keys): Compare opaque data at the first entry of the array when it's unknown algo. * mpi/mpi-cmp.c (mpi_cmp): Backport libgcrypt 1.5.0's semantics. -- (backported from 2.0 commit 43429c7869152f301157e4b24790b3801dce0f0a) GnuPG-bug-id: 1962
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@ -452,12 +452,15 @@ cmp_public_keys( PKT_public_key *a, PKT_public_key *b )
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return -1;
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return -1;
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n = pubkey_get_npkey( b->pubkey_algo );
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n = pubkey_get_npkey( b->pubkey_algo );
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if( !n )
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if( !n ) { /* unknown algorithm, rest is in opaque MPI */
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return -1; /* can't compare due to unknown algorithm */
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if( mpi_cmp( a->pkey[0], b->pkey[0] ) )
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return -1;
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} else {
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for(i=0; i < n; i++ ) {
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for(i=0; i < n; i++ ) {
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if( mpi_cmp( a->pkey[i], b->pkey[i] ) )
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if( mpi_cmp( a->pkey[i], b->pkey[i] ) )
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return -1;
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return -1;
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}
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}
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}
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return 0;
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return 0;
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}
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}
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@ -479,12 +482,15 @@ cmp_secret_keys( PKT_secret_key *a, PKT_secret_key *b )
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return -1;
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return -1;
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n = pubkey_get_npkey( b->pubkey_algo );
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n = pubkey_get_npkey( b->pubkey_algo );
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if( !n )
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if( !n ) { /* unknown algorithm, rest is in opaque MPI */
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return -1; /* can't compare due to unknown algorithm */
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if( mpi_cmp( a->skey[0], b->skey[0] ) )
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return -1;
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} else {
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for(i=0; i < n; i++ ) {
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for(i=0; i < n; i++ ) {
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if( mpi_cmp( a->skey[i], b->skey[i] ) )
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if( mpi_cmp( a->skey[i], b->skey[i] ) )
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return -1;
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return -1;
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}
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}
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}
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return 0;
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return 0;
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}
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}
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@ -20,6 +20,7 @@
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#include <config.h>
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#include <config.h>
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#include <stdio.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdlib.h>
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#include <string.h>
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#include "mpi-internal.h"
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#include "mpi-internal.h"
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int
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int
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@ -49,6 +50,21 @@ mpi_cmp( MPI u, MPI v )
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mpi_size_t usize, vsize;
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mpi_size_t usize, vsize;
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int cmp;
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int cmp;
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if (mpi_is_opaque (u) || mpi_is_opaque (v))
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{
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if (mpi_is_opaque (u) && !mpi_is_opaque (v))
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return -1;
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if (!mpi_is_opaque (u) && mpi_is_opaque (v))
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return 1;
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if (!u->nbits && !v->nbits)
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return 0; /* Empty buffers are identical. */
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if (u->nbits < v->nbits)
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return -1;
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if (u->nbits > v->nbits)
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return 1;
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return memcmp (u->d, v->d, u->nbits);
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}
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mpi_normalize( u );
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mpi_normalize( u );
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mpi_normalize( v );
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mpi_normalize( v );
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usize = u->nlimbs;
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usize = u->nlimbs;
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