diff options
Diffstat (limited to 'src/libsec/port/x509.c')
| -rw-r--r-- | src/libsec/port/x509.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/libsec/port/x509.c b/src/libsec/port/x509.c index a37b64af..f204ca6f 100644 --- a/src/libsec/port/x509.c +++ b/src/libsec/port/x509.c @@ -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 |