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patchlevel 2

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This commit is contained in:
Werner Koch 1998-01-07 20:47:46 +00:00
parent cf783fe54c
commit 762d3d7197
24 changed files with 475 additions and 81 deletions
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127
g10/keyid.c
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@ -46,6 +46,77 @@ pubkey_letter( int algo )
}
}
/* this is special code for V3 which uses ElGamal and
* calculates a fingerprint like V4, but with rmd160
* and a version byte of 3. Returns an rmd160 handle, caller must
* do rmd160_final()
*/
static RMDHANDLE
v3_elg_fingerprint_md( PKT_public_cert *pkc )
{
RMDHANDLE md;
byte *buf1, *buf2, *buf3;
byte *p1, *p2, *p3;
unsigned n1, n2, n3;
unsigned n;
p1 = buf1 = mpi_get_buffer( pkc->d.elg.p, &n1, NULL );
for( ; !*p1 && n1; p1++, n1-- ) /* skip leading null bytes */
;
p2 = buf2 = mpi_get_buffer( pkc->d.elg.g, &n2, NULL );
for( ; !*p2 && n2; p2++, n2-- ) /* skip leading null bytes */
;
p3 = buf3 = mpi_get_buffer( pkc->d.elg.y, &n3, NULL );
for( ; !*p3 && n3; p3++, n3-- ) /* skip leading null bytes */
;
/* calculate length of packet (1+4+2+1+2+n1+2+n2+2+n3) */
n = 14 + n1 + n2 + n3;
md = rmd160_open(0);
rmd160_putchar( md, 0x99 ); /* ctb */
rmd160_putchar( md, n >> 8 ); /* 2 byte length header */
rmd160_putchar( md, n );
rmd160_putchar( md, 3 ); /* version */
{ u32 a = pkc->timestamp;
rmd160_putchar( md, a >> 24 );
rmd160_putchar( md, a >> 16 );
rmd160_putchar( md, a >> 8 );
rmd160_putchar( md, a );
}
{ u16 a = pkc->valid_days;
rmd160_putchar( md, a >> 8 );
rmd160_putchar( md, a );
}
rmd160_putchar( md, pkc->pubkey_algo );
rmd160_putchar( md, n1>>8); rmd160_putchar( md, n1 ); rmd160_write( md, p1, n1 );
rmd160_putchar( md, n2>>8); rmd160_putchar( md, n2 ); rmd160_write( md, p2, n2 );
rmd160_putchar( md, n3>>8); rmd160_putchar( md, n3 ); rmd160_write( md, p3, n3 );
m_free(buf1);
m_free(buf2);
m_free(buf3);
return md;
}
static RMDHANDLE
v3_elg_fingerprint_md_skc( PKT_secret_cert *skc )
{
PKT_public_cert pkc;
byte *p;
pkc.pubkey_algo = skc->pubkey_algo;
pkc.timestamp = skc->timestamp;
pkc.valid_days = skc->valid_days;
pkc.pubkey_algo = skc->pubkey_algo;
pkc.d.elg.p = skc->d.elg.p;
pkc.d.elg.g = skc->d.elg.g;
pkc.d.elg.y = skc->d.elg.y;
return v3_elg_fingerprint_md( &pkc );
}
/****************
* Get the keyid from the secret key certificate and put it into keyid
@ -61,7 +132,14 @@ keyid_from_skc( PKT_secret_cert *skc, u32 *keyid )
keyid = dummy_keyid;
if( skc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
lowbits = mpi_get_keyid( skc->d.elg.y, keyid );
const byte *dp;
RMDHANDLE md;
md = v3_elg_fingerprint_md_skc(skc);
dp = rmd160_final( md );
keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
lowbits = keyid[1];
rmd160_close(md);
}
else if( skc->pubkey_algo == PUBKEY_ALGO_RSA ) {
lowbits = mpi_get_keyid( skc->d.rsa.rsa_n, keyid );
@ -87,7 +165,14 @@ keyid_from_pkc( PKT_public_cert *pkc, u32 *keyid )
keyid = dummy_keyid;
if( pkc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
lowbits = mpi_get_keyid( pkc->d.elg.y, keyid );
const byte *dp;
RMDHANDLE md;
md = v3_elg_fingerprint_md(pkc);
dp = rmd160_final( md );
keyid[0] = dp[12] << 24 | dp[13] << 16 | dp[14] << 8 | dp[15] ;
keyid[1] = dp[16] << 24 | dp[17] << 16 | dp[18] << 8 | dp[19] ;
lowbits = keyid[1];
rmd160_close(md);
}
else if( pkc->pubkey_algo == PUBKEY_ALGO_RSA ) {
lowbits = mpi_get_keyid( pkc->d.rsa.rsa_n, keyid );
@ -213,47 +298,21 @@ fingerprint_from_skc( PKT_secret_cert *skc, size_t *ret_len )
return p;
}
byte *
fingerprint_from_pkc( PKT_public_cert *pkc, size_t *ret_len )
{
byte *p, *buf, *array;
const char *dp;
size_t len;
unsigned n;
if( pkc->pubkey_algo == PUBKEY_ALGO_ELGAMAL ) {
RMDHANDLE md;
const char *dp;
md = rmd160_open(0);
{ u32 a = pkc->timestamp;
rmd160_putchar( md, a >> 24 );
rmd160_putchar( md, a >> 16 );
rmd160_putchar( md, a >> 8 );
rmd160_putchar( md, a );
}
{ u16 a = pkc->valid_days;
rmd160_putchar( md, a >> 8 );
rmd160_putchar( md, a );
}
rmd160_putchar( md, pkc->pubkey_algo );
p = buf = mpi_get_buffer( pkc->d.elg.p, &n, NULL );
for( ; !*p && n; p++, n-- )
;
rmd160_putchar( md, n>>8); rmd160_putchar( md, n ); rmd160_write( md, p, n );
m_free(buf);
p = buf = mpi_get_buffer( pkc->d.elg.g, &n, NULL );
for( ; !*p && n; p++, n-- )
;
rmd160_putchar( md, n>>8); rmd160_putchar( md, n ); rmd160_write( md, p, n );
m_free(buf);
p = buf = mpi_get_buffer( pkc->d.elg.y, &n, NULL );
for( ; !*p && n; p++, n-- )
;
rmd160_putchar( md, n>>8); rmd160_putchar( md, n ); rmd160_write( md, p, n );
m_free(buf);
dp = rmd160_final(md);
md = v3_elg_fingerprint_md(pkc);
dp = rmd160_final( md );
array = m_alloc( 20 );
len = 20;
memcpy(array, dp, 20 );