i2d_DSAPublicKey
return (i2d_DSAPublicKey(a->pkey.dsa, pp));
int i2d_DSAPublicKey(const DSA *a, unsigned char **pp);
LCRYPTO_ALIAS(i2d_DSAPublicKey);
LCRYPTO_USED(i2d_DSAPublicKey);
i = i2d_DSAPublicKey(dsa, NULL);
i2d_DSAPublicKey(dsa, (unsigned char **) &foo);