mirror of
git://git.gnupg.org/gnupg.git
synced 2025-07-03 22:56:33 +02:00
a whole bunch of internal cleanups
This commit is contained in:
Werner Koch
parent
d42ad47688
commit
37d2adfe61
28 changed files with 819 additions and 1147 deletions
385
g10/keyid.c
385
g10/keyid.c
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@ -47,182 +47,72 @@ pubkey_letter( int algo )
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}
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}
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/* this is special code for V3 which uses ElGamal and
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* calculates a fingerprint like V4, but with rmd160
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* and a version byte of 3. Returns an md handle, caller must
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* do md_close()
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*/
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static MD_HANDLE
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v3_elg_fingerprint_md( PKT_public_cert *pkc )
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do_fingerprint_md( PKT_public_cert *pkc )
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{
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MD_HANDLE md;
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byte *buf1, *buf2, *buf3;
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byte *p1, *p2, *p3;
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unsigned n1, n2, n3;
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unsigned nb1, nb2, nb3;
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unsigned n;
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unsigned nb[PUBKEY_MAX_NPKEY];
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unsigned nn[PUBKEY_MAX_NPKEY];
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byte *pp[PUBKEY_MAX_NPKEY];
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int i;
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int npkey = pubkey_get_npkey( pkc->pubkey_algo );
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nb1 = mpi_get_nbits(pkc->d.elg.p);
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p1 = buf1 = mpi_get_buffer( pkc->d.elg.p, &n1, NULL );
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nb2 = mpi_get_nbits(pkc->d.elg.g);
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p2 = buf2 = mpi_get_buffer( pkc->d.elg.g, &n2, NULL );
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nb3 = mpi_get_nbits(pkc->d.elg.y);
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p3 = buf3 = mpi_get_buffer( pkc->d.elg.y, &n3, NULL );
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/* calculate length of packet (1+4+2+1+2+n1+2+n2+2+n3) */
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n = 14 + n1 + n2 + n3;
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md = md_open( DIGEST_ALGO_RMD160, 0);
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md = md_open( pkc->version < 4 ? DIGEST_ALGO_RMD160 : DIGEST_ALGO_SHA1, 0);
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n = pkc->version < 4 ? 8 : 6;
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for(i=0; i < npkey; i++ ) {
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nb[i] = mpi_get_nbits(pkc->pkey[i]);
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pp[i] = mpi_get_buffer( pkc->pkey[i], nn+i, NULL );
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n += 2 + nn[i];
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}
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md_putc( md, 0x99 ); /* ctb */
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md_putc( md, n >> 8 ); /* 2 byte length header */
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md_putc( md, n );
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md_putc( md, 3 ); /* version */
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if( pkc->version < 4 )
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md_putc( md, 3 );
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else
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md_putc( md, 4 );
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{ u32 a = pkc->timestamp;
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md_putc( md, a >> 24 );
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md_putc( md, a >> 16 );
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md_putc( md, a >> 8 );
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md_putc( md, a );
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}
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{ u16 a = pkc->valid_days;
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if( pkc->version < 4 ) {
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u16 a = pkc->valid_days;
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md_putc( md, a >> 8 );
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md_putc( md, a );
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}
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md_putc( md, pkc->pubkey_algo );
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md_putc( md, nb1>>8); md_putc( md, nb1 ); md_write( md, p1, n1 );
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md_putc( md, nb2>>8); md_putc( md, nb2 ); md_write( md, p2, n2 );
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md_putc( md, nb3>>8); md_putc( md, nb3 ); md_write( md, p3, n3 );
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m_free(buf1);
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m_free(buf2);
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m_free(buf3);
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md_final( md );
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return md;
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}
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static MD_HANDLE
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elg_fingerprint_md( PKT_public_cert *pkc )
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{
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MD_HANDLE md;
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byte *buf1, *buf3, *buf4 ;
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byte *p1, *p3, *p4;
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unsigned n1, n3, n4;
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unsigned nb1, nb3, nb4;
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unsigned n;
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nb1 = mpi_get_nbits(pkc->d.elg.p);
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p1 = buf1 = mpi_get_buffer( pkc->d.elg.p, &n1, NULL );
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nb3 = mpi_get_nbits(pkc->d.elg.g);
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p3 = buf3 = mpi_get_buffer( pkc->d.elg.g, &n3, NULL );
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nb4 = mpi_get_nbits(pkc->d.elg.y);
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p4 = buf4 = mpi_get_buffer( pkc->d.elg.y, &n4, NULL );
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/* calculate length of packet */
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n = 12 + n1 + n3 +n4 ;
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md = md_open( DIGEST_ALGO_SHA1, 0);
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md_putc( md, 0x99 ); /* ctb */
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md_putc( md, n >> 8 ); /* 2 byte length header */
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md_putc( md, n );
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md_putc( md, 4 ); /* version */
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{ u32 a = pkc->timestamp;
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md_putc( md, a >> 24 );
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md_putc( md, a >> 16 );
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md_putc( md, a >> 8 );
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md_putc( md, a );
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for(i=0; i < npkey; i++ ) {
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md_putc( md, nb[i]>>8);
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md_putc( md, nb[i] );
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md_write( md, pp[i], nn[i] );
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m_free(pp[i]);
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}
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md_putc( md, pkc->pubkey_algo );
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md_putc( md, nb1>>8); md_putc( md, nb1 ); md_write( md, p1, n1 );
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md_putc( md, nb3>>8); md_putc( md, nb3 ); md_write( md, p3, n3 );
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md_putc( md, nb4>>8); md_putc( md, nb4 ); md_write( md, p4, n4 );
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m_free(buf1);
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m_free(buf3);
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m_free(buf4);
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md_final( md );
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return md;
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}
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static MD_HANDLE
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dsa_fingerprint_md( PKT_public_cert *pkc )
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{
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MD_HANDLE md;
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byte *buf1, *buf2, *buf3, *buf4 ;
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byte *p1, *p2, *p3, *p4;
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unsigned n1, n2, n3, n4;
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unsigned nb1, nb2, nb3, nb4;
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unsigned n;
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nb1 = mpi_get_nbits(pkc->d.dsa.p);
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p1 = buf1 = mpi_get_buffer( pkc->d.dsa.p, &n1, NULL );
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nb2 = mpi_get_nbits(pkc->d.dsa.q);
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p2 = buf2 = mpi_get_buffer( pkc->d.dsa.q, &n2, NULL );
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nb3 = mpi_get_nbits(pkc->d.dsa.g);
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p3 = buf3 = mpi_get_buffer( pkc->d.dsa.g, &n3, NULL );
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nb4 = mpi_get_nbits(pkc->d.dsa.y);
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p4 = buf4 = mpi_get_buffer( pkc->d.dsa.y, &n4, NULL );
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/* calculate length of packet */
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n = 14 + n1 + n2 + n3 +n4 ;
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md = md_open( DIGEST_ALGO_SHA1, 0);
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md_putc( md, 0x99 ); /* ctb */
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md_putc( md, n >> 8 ); /* 2 byte length header */
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md_putc( md, n );
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md_putc( md, 4 ); /* version */
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{ u32 a = pkc->timestamp;
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md_putc( md, a >> 24 );
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md_putc( md, a >> 16 );
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md_putc( md, a >> 8 );
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md_putc( md, a );
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}
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md_putc( md, pkc->pubkey_algo );
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md_putc( md, nb1>>8); md_putc( md, nb1 ); md_write( md, p1, n1 );
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md_putc( md, nb2>>8); md_putc( md, nb2 ); md_write( md, p2, n2 );
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md_putc( md, nb3>>8); md_putc( md, nb3 ); md_write( md, p3, n3 );
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md_putc( md, nb4>>8); md_putc( md, nb4 ); md_write( md, p4, n4 );
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m_free(buf1);
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m_free(buf2);
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m_free(buf3);
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m_free(buf4);
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md_final( md );
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return md;
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}
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static MD_HANDLE
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elg_fingerprint_md_skc( PKT_secret_cert *skc )
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do_fingerprint_md_skc( PKT_secret_cert *skc )
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{
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PKT_public_cert pkc;
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int npkey = pubkey_get_npkey( skc->pubkey_algo ); /* npkey is correct! */
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int i;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.version = skc->version;
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pkc.timestamp = skc->timestamp;
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pkc.valid_days = skc->valid_days;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.d.elg.p = skc->d.elg.p;
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pkc.d.elg.g = skc->d.elg.g;
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pkc.d.elg.y = skc->d.elg.y;
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if( pkc.version < 4 )
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return v3_elg_fingerprint_md( &pkc );
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else
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return elg_fingerprint_md( &pkc );
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}
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static MD_HANDLE
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dsa_fingerprint_md_skc( PKT_secret_cert *skc )
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{
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PKT_public_cert pkc;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.timestamp = skc->timestamp;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.d.dsa.p = skc->d.dsa.p;
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pkc.d.dsa.q = skc->d.dsa.q;
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pkc.d.dsa.g = skc->d.dsa.g;
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pkc.d.dsa.y = skc->d.dsa.y;
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return dsa_fingerprint_md( &pkc );
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for( i=0; i < npkey; i++ )
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pkc.pkey[i] = skc->skey[i];
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return do_fingerprint_md( &pkc );
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}
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@ -239,35 +129,20 @@ keyid_from_skc( PKT_secret_cert *skc, u32 *keyid )
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if( !keyid )
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keyid = dummy_keyid;
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if( is_ELGAMAL(skc->pubkey_algo) ) {
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const byte *dp;
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MD_HANDLE md;
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md = elg_fingerprint_md_skc(skc);
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if( skc->version < 4 )
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dp = md_read( md, DIGEST_ALGO_RMD160 );
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else
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dp = md_read( md, DIGEST_ALGO_SHA1 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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else if( skc->pubkey_algo == PUBKEY_ALGO_DSA ) {
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const byte *dp;
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MD_HANDLE md;
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md = dsa_fingerprint_md_skc(skc);
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dp = md_read( md, DIGEST_ALGO_SHA1 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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else if( is_RSA(skc->pubkey_algo) ) {
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lowbits = mpi_get_keyid( skc->d.rsa.n, keyid );
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if( skc->version < 4 && is_RSA(skc->pubkey_algo) ) {
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lowbits = mpi_get_keyid( skc->skey[0], keyid ); /* take n */
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}
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else {
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keyid[0] = keyid[1] = lowbits = 0;
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const byte *dp;
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MD_HANDLE md;
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md = do_fingerprint_md_skc(skc);
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dp = md_read( md, 0 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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return lowbits;
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}
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@ -285,37 +160,18 @@ keyid_from_pkc( PKT_public_cert *pkc, u32 *keyid )
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if( !keyid )
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keyid = dummy_keyid;
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if( is_ELGAMAL(pkc->pubkey_algo) ) {
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const byte *dp;
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MD_HANDLE md;
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if( pkc->version < 4 ) {
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md = v3_elg_fingerprint_md(pkc);
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dp = md_read( md, DIGEST_ALGO_RMD160 );
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}
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else {
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md = elg_fingerprint_md(pkc);
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dp = md_read( md, DIGEST_ALGO_SHA1 );
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}
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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else if( pkc->pubkey_algo == PUBKEY_ALGO_DSA ) {
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const byte *dp;
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MD_HANDLE md;
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md = dsa_fingerprint_md(pkc);
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dp = md_read( md, DIGEST_ALGO_SHA1 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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else if( is_RSA(pkc->pubkey_algo) ) {
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lowbits = mpi_get_keyid( pkc->d.rsa.n, keyid );
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if( pkc->version < 4 && is_RSA(pkc->pubkey_algo) ) {
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lowbits = mpi_get_keyid( pkc->pkey[0], keyid ); /* from n */
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}
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else {
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keyid[0] = keyid[1] = lowbits = 0;
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const byte *dp;
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MD_HANDLE md;
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md = do_fingerprint_md(pkc);
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dp = md_read( md, 0 );
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keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
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keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
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lowbits = keyid[1];
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md_close(md);
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}
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return lowbits;
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@ -338,17 +194,7 @@ keyid_from_sig( PKT_signature *sig, u32 *keyid )
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unsigned
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nbits_from_pkc( PKT_public_cert *pkc )
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{
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if( is_ELGAMAL(pkc->pubkey_algo) ) {
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return mpi_get_nbits( pkc->d.elg.p );
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}
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else if( pkc->pubkey_algo == PUBKEY_ALGO_DSA ) {
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return mpi_get_nbits( pkc->d.dsa.p );
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}
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else if( is_RSA(pkc->pubkey_algo) ) {
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return mpi_get_nbits( pkc->d.rsa.n );
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}
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else
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return 0;
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return pubkey_nbits( pkc->pubkey_algo, pkc->pkey );
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}
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/****************
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@ -357,17 +203,7 @@ nbits_from_pkc( PKT_public_cert *pkc )
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unsigned
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nbits_from_skc( PKT_secret_cert *skc )
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{
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if( is_ELGAMAL(skc->pubkey_algo) ) {
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return mpi_get_nbits( skc->d.elg.p );
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}
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else if( skc->pubkey_algo == PUBKEY_ALGO_DSA ) {
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return mpi_get_nbits( skc->d.dsa.p );
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}
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else if( is_RSA(skc->pubkey_algo) ) {
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return mpi_get_nbits( skc->d.rsa.n );
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}
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else
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return 0;
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return pubkey_nbits( skc->pubkey_algo, skc->skey );
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}
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/****************
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@ -417,40 +253,6 @@ datestr_from_sig( PKT_signature *sig )
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* The length of the array is returned in ret_len. Caller must free
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* the array.
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*/
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byte *
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fingerprint_from_skc( PKT_secret_cert *skc, size_t *ret_len )
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{
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PKT_public_cert pkc;
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byte *p;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.version = skc->version;
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if( is_ELGAMAL(pkc.pubkey_algo) ) {
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pkc.timestamp = skc->timestamp;
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pkc.valid_days = skc->valid_days;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.d.elg.p = skc->d.elg.p;
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pkc.d.elg.g = skc->d.elg.g;
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pkc.d.elg.y = skc->d.elg.y;
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}
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else if( pkc.pubkey_algo == PUBKEY_ALGO_DSA ) {
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pkc.timestamp = skc->timestamp;
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pkc.valid_days = skc->valid_days;
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pkc.pubkey_algo = skc->pubkey_algo;
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pkc.d.dsa.p = skc->d.dsa.p;
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pkc.d.dsa.q = skc->d.dsa.q;
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pkc.d.dsa.g = skc->d.dsa.g;
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pkc.d.dsa.y = skc->d.dsa.y;
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}
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else if( is_RSA(pkc.pubkey_algo) ) {
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pkc.d.rsa.n = skc->d.rsa.n;
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pkc.d.rsa.e = skc->d.rsa.e;
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}
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p = fingerprint_from_pkc( &pkc, ret_len );
|
||||
memset(&pkc, 0, sizeof pkc); /* not really needed */
|
||||
return p;
|
||||
}
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
@ -462,38 +264,15 @@ fingerprint_from_pkc( PKT_public_cert *pkc, size_t *ret_len )
|
|||
size_t len;
|
||||
unsigned n;
|
||||
|
||||
if( is_ELGAMAL(pkc->pubkey_algo) ) {
|
||||
MD_HANDLE md;
|
||||
if( pkc->version < 4 ) {
|
||||
md = v3_elg_fingerprint_md(pkc);
|
||||
dp = md_read( md, DIGEST_ALGO_RMD160 );
|
||||
}
|
||||
else {
|
||||
md = elg_fingerprint_md(pkc);
|
||||
dp = md_read( md, DIGEST_ALGO_SHA1 );
|
||||
}
|
||||
array = m_alloc( 20 );
|
||||
len = 20;
|
||||
memcpy(array, dp, 20 );
|
||||
md_close(md);
|
||||
}
|
||||
else if( pkc->pubkey_algo == PUBKEY_ALGO_DSA ) {
|
||||
MD_HANDLE md;
|
||||
md = dsa_fingerprint_md(pkc);
|
||||
dp = md_read( md, DIGEST_ALGO_SHA1 );
|
||||
array = m_alloc( 20 );
|
||||
len = 20;
|
||||
memcpy(array, dp, 20 );
|
||||
md_close(md);
|
||||
}
|
||||
else if( is_RSA(pkc->pubkey_algo) ) {
|
||||
if( pkc->version < 4 && is_RSA(pkc->pubkey_algo) ) {
|
||||
/* RSA in version 3 packets is special */
|
||||
MD_HANDLE md;
|
||||
|
||||
md = md_open( DIGEST_ALGO_MD5, 0);
|
||||
p = buf = mpi_get_buffer( pkc->d.rsa.n, &n, NULL );
|
||||
p = buf = mpi_get_buffer( pkc->pkey[0], &n, NULL );
|
||||
md_write( md, p, n );
|
||||
m_free(buf);
|
||||
p = buf = mpi_get_buffer( pkc->d.rsa.e, &n, NULL );
|
||||
p = buf = mpi_get_buffer( pkc->pkey[1], &n, NULL );
|
||||
md_write( md, p, n );
|
||||
m_free(buf);
|
||||
md_final(md);
|
||||
|
|
@ -503,8 +282,52 @@ fingerprint_from_pkc( PKT_public_cert *pkc, size_t *ret_len )
|
|||
md_close(md);
|
||||
}
|
||||
else {
|
||||
array = m_alloc(1);
|
||||
len = 0; /* ooops */
|
||||
MD_HANDLE md;
|
||||
md = do_fingerprint_md(pkc);
|
||||
dp = md_read( md, 0 );
|
||||
len = md_digest_length( md_get_algo( md ) );
|
||||
array = m_alloc( len );
|
||||
memcpy(array, dp, len );
|
||||
md_close(md);
|
||||
}
|
||||
|
||||
*ret_len = len;
|
||||
return array;
|
||||
}
|
||||
|
||||
byte *
|
||||
fingerprint_from_skc( PKT_secret_cert *skc, size_t *ret_len )
|
||||
{
|
||||
byte *p, *buf, *array;
|
||||
const char *dp;
|
||||
size_t len;
|
||||
unsigned n;
|
||||
|
||||
if( skc->version < 4 && is_RSA(skc->pubkey_algo) ) {
|
||||
/* RSA in version 3 packets is special */
|
||||
MD_HANDLE md;
|
||||
|
||||
md = md_open( DIGEST_ALGO_MD5, 0);
|
||||
p = buf = mpi_get_buffer( skc->skey[1], &n, NULL );
|
||||
md_write( md, p, n );
|
||||
m_free(buf);
|
||||
p = buf = mpi_get_buffer( skc->skey[0], &n, NULL );
|
||||
md_write( md, p, n );
|
||||
m_free(buf);
|
||||
md_final(md);
|
||||
array = m_alloc( 16 );
|
||||
len = 16;
|
||||
memcpy(array, md_read(md, DIGEST_ALGO_MD5), 16 );
|
||||
md_close(md);
|
||||
}
|
||||
else {
|
||||
MD_HANDLE md;
|
||||
md = do_fingerprint_md_skc(skc);
|
||||
dp = md_read( md, 0 );
|
||||
len = md_digest_length( md_get_algo( md ) );
|
||||
array = m_alloc( len );
|
||||
memcpy(array, dp, len );
|
||||
md_close(md);
|
||||
}
|
||||
|
||||
*ret_len = len;
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue