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libsec: import from 9front

--- a/include/libsec.h

+++ b/include/libsec.h

@@ -357,8 +357,8 @@

 PEMChain*	decodepemchain(char *s, char *type);

 uchar*		X509rsagen(RSApriv *priv, char *subj, ulong valid[2], int *certlen);

 uchar*		X509rsareq(RSApriv *priv, char *subj, int *certlen);

-char*		X509rsaverifydigest(uchar *sig, int siglen, uchar *edigest, int edigestlen, RSApub *pk);

 char*		X509rsaverify(uchar *cert, int ncert, RSApub *pk);

+char*		X509rsaverifydigest(uchar *sig, int siglen, uchar *edigest, int edigestlen, RSApub *pk);

 void		X509dump(uchar *cert, int ncert);

@@ -528,9 +528,9 @@

 int	ecencodepub(ECdomain *dom, ECpub *, uchar *, int);

 void	ecpubfree(ECpub *);

-ECpub*	X509toECpub(uchar *cert, int ncert, ECdomain *dom);

+ECpub*	X509toECpub(uchar *cert, int ncert, char *name, int nname, ECdomain *dom);

+char*	X509ecdsaverify(uchar *cert, int ncert, ECdomain *dom, ECpub *pub);

 char*	X509ecdsaverifydigest(uchar *sig, int siglen, uchar *edigest, int edigestlen, ECdomain *dom, ECpub *pub);

-char*	X509ecdsaverify(uchar *sig, int siglen, ECdomain *dom, ECpub *pub);

 /* curves */

 void	secp256r1(mpint *p, mpint *a, mpint *b, mpint *x, mpint *y, mpint *n, mpint *h);

--- a/libsec/x509.c

+++ b/libsec/x509.c

@@ -2314,17 +2314,26 @@

 }

 ECpub*

-X509toECpub(uchar *cert, int ncert, ECdomain *dom)

+X509toECpub(uchar *cert, int ncert, char *name, int nname, ECdomain *dom)

 {

 	CertX509 *c;

 	ECpub *pub;

 	Bytes *b;

+	if(name != nil)

+		memset(name, 0, nname);

+

 	b = makebytes(cert, ncert);

 	c = decode_cert(b);

 	freebytes(b);

 	if(c == nil)

 		return nil;

+	if(name != nil && c->subject != nil){

+		char *e = strchr(c->subject, ',');

+		if(e != nil)

+			*e = 0;	/* take just CN part of Distinguished Name */

+		strncpy(name, c->subject, nname);

+	}

 	pub = nil;

 	if(c->publickey_alg == ALG_ecPublicKey){

 		ecdominit(dom, namedcurves[c->curve]);

@@ -2365,7 +2374,6 @@

 RSApub*

 X509toRSApub(uchar *cert, int ncert, char *name, int nname)

 {

-	char *e;

 	Bytes *b;

 	CertX509 *c;

 	RSApub *pub;

@@ -2379,7 +2387,7 @@

 	if(c == nil)

 		return nil;

 	if(name != nil && c->subject != nil){

-		e = strchr(c->subject, ',');

+		char *e = strchr(c->subject, ',');

 		if(e != nil)

 			*e = 0;	/* take just CN part of Distinguished Name */

 		strncpy(name, c->subject, nname);