Openssl 1.1.1d无效使用了不完整的类型“struct dsa_st”

Question

我正在从openssl 1.0.2s迁移到1.1.1d，并且出现以下错误。

我在openssl文档上搜索了一下，似乎调用字段发生了变化。我不确定我需要如何在我的代码中实现它。

const BIGNUM * const *KeyPairImpl::getField(const string &field) const
{
  if (field == "P")
    return &dsa_->p;
  else if (field == "Q")
    return &dsa_->q;
  else if (field == "G")
    return &dsa_->g;
  else if (field == "X")
    return &dsa_->priv_key;
  else if (field == "Y")
    return &dsa_->pub_key;
  else
    // unknown field name
    return NULL;
}

错误

KeyPair.cpp: In member function ‘const BIGNUM* const* KeyPairImpl::getField(const std::string&) const’:
KeyPair.cpp:84: error: invalid use of incomplete type ‘struct dsa_st’
/usr/local/ssl_1.1.1d/include/openssl/ossl_typ.h:107: error: forward declaration of ‘struct dsa_st’
KeyPair.cpp:86: error: invalid use of incomplete type ‘struct dsa_st’
/usr/local/ssl_1.1.1d/include/openssl/ossl_typ.h:107: error: forward declaration of ‘struct dsa_st’
KeyPair.cpp:88: error: invalid use of incomplete type ‘struct dsa_st’
/usr/local/ssl_1.1.1d/include/openssl/ossl_typ.h:107: error: forward declaration of ‘struct dsa_st’
KeyPair.cpp:90: error: invalid use of incomplete type ‘struct dsa_st’
/usr/local/ssl_1.1.1d/include/openssl/ossl_typ.h:107: error: forward declaration of ‘struct dsa_st’
KeyPair.cpp:92: error: invalid use of incomplete type ‘struct dsa_st’
/usr/local/ssl_1.1.1d/include/openssl/ossl_typ.h:107: error: forward declaration of ‘struct dsa_st’
cc1plus: warnings being treated as errors

Answer 1

Openssl 1.1.1不再允许您直接访问内部结构。您需要使用提供的API函数来访问内部数据(如果提供)。

对于dsa_->p，使用DSA_get0_p

对于dsa_->q，请使用DSA_get0_q

对于dsa_->g，请使用DSA_get0_g

对于dsa_->priv_key，请使用DSA_get0_priv_key

对于dsa->发布密钥，请使用DSA_get0_pub_key

例如：

return DSA_get0_p(dsa_);