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add dsa x509

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rsc 2005-02-13 18:35:11 +00:00
parent 039b8c9af0
commit 74fc94d47e
1 changed files with 74 additions and 0 deletions
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74
src/libsec/port/x509.c
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@ -1934,6 +1934,68 @@ errret:
return nil;
}
/*
* DSAPrivateKey ::= SEQUENCE{
* version Version,
* p INTEGER,
* q INTEGER,
* g INTEGER, -- alpha
* pub_key INTEGER, -- key
* priv_key INTEGER, -- secret
* }
*/
static DSApriv*
decode_dsaprivkey(Bytes* a)
{
int version;
Elem e;
Elist *el;
mpint *mp;
DSApriv* key;
key = dsaprivalloc();
if(decode(a->data, a->len, &e) != ASN_OK)
goto errret;
if(!is_seq(&e, &el) || elistlen(el) != 6)
goto errret;
version=-1;
if(!is_int(&el->hd, &version) || version != 0)
{
fprint(2, "version %d\n", version);
goto errret;
}
el = el->tl;
key->pub.p = mp = asn1mpint(&el->hd);
if(mp == nil)
goto errret;
el = el->tl;
key->pub.q = mp = asn1mpint(&el->hd);
if(mp == nil)
goto errret;
el = el->tl;
key->pub.alpha = mp = asn1mpint(&el->hd);
if(mp == nil)
goto errret;
el = el->tl;
key->pub.key = mp = asn1mpint(&el->hd);
if(mp == nil)
goto errret;
el = el->tl;
key->secret = mp = asn1mpint(&el->hd);
if(mp == nil)
goto errret;
return key;
errret:
dsaprivfree(key);
return nil;
}
static mpint*
asn1mpint(Elem *e)
{
@ -1984,6 +2046,18 @@ asn1toRSApriv(uchar *kd, int kn)
return key;
}
DSApriv*
asn1toDSApriv(uchar *kd, int kn)
{
Bytes *b;
DSApriv *key;
b = makebytes(kd, kn);
key = decode_dsaprivkey(b);
freebytes(b);
return key;
}
/*
* digest(CertificateInfo)
* Our ASN.1 library doesn't return pointers into the original