78 lines
1.7 KiB
C
78 lines
1.7 KiB
C
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//
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// Created by Eric Saturn on 2019/12/13.
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//
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#ifndef NET_BIGNUMBER_H
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#define NET_BIGNUMBER_H
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#include <memory>
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#include <openssl/bn.h>
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using namespace std;
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namespace Net {
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// 对BIGNUM进行简单封装
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class BigNumber {
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public:
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BigNumber() : bn(BN_new(), ::BN_free) {}
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BigNumber(BIGNUM *t_bn) : bn(t_bn, ::BN_free) {}
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// 临时取用
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BIGNUM * get() const { return bn.get(); }
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BIGNUM *getCopy() const {
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BIGNUM *n_bn = BN_new();
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BN_copy(n_bn, bn.get());
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return n_bn;
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}
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// 获得智能指针
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shared_ptr<BIGNUM> getSharedPtr(){
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return bn;
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}
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// 获得一份拷贝
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BigNumber copy(){
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BigNumber n;
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BN_copy(n.get(), bn.get());
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return n;
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}
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void copyFrom(const BIGNUM * t){
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BN_copy(bn.get(), t);
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}
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// 向该类移交BIGNUM结构的的控制权
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void set(BIGNUM *t_bn) { bn = shared_ptr<BIGNUM>(t_bn, ::BN_free); }
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// 该类移交所管辖的BIGNUM结构的控制权
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BIGNUM *getControl() {
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if(bn != nullptr){
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BIGNUM *n_bn = bn.get();
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bn = nullptr;
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return n_bn;
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}
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else return nullptr;
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}
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// 得到BIGNUM的Hex字符串
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string getDataHex() const {
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void *hex_data_str = BN_bn2hex(bn.get());
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string hex_string((const char *)hex_data_str);
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OPENSSL_free(hex_data_str);
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return hex_string;
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}
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string getDataHexHash() const{
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return string();
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}
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private:
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shared_ptr<BIGNUM> bn;
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};
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}
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#endif //NET_BIGNUMBER_H
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