to_der()
public
Encodes this DSA to its DER encoding.
static VALUE
ossl_dsa_to_der(VALUE self)
{
EVP_PKEY *pkey;
int (*i2d_func)_((DSA*, unsigned char**));
unsigned char *p;
long len;
VALUE str;
GetPKeyDSA(self, pkey);
if(DSA_HAS_PRIVATE(pkey->pkey.dsa))
i2d_func = (int(*)_((DSA*,unsigned char**)))i2d_DSAPrivateKey;
else
i2d_func = i2d_DSA_PUBKEY;
if((len = i2d_func(pkey->pkey.dsa, NULL)) <= 0)
ossl_raise(eDSAError, NULL);
str = rb_str_new(0, len);
p = (unsigned char *)RSTRING_PTR(str);
if(i2d_func(pkey->pkey.dsa, &p) < 0)
ossl_raise(eDSAError, NULL);
ossl_str_adjust(str, p);
return str;
}