https://telecominfraproject.atlassian.net/browse/WIFI-7831

Signed-off-by: stephb9959 <stephane.bourque@gmail.com>

src/framework/utils.cpp

@@ -3,7 +3,8 @@
 //
 
 #include "Poco/Path.h"
-
+#include "Poco/TemporaryFile.h"
+#include "Poco/Crypto/ECKey.h"
 #include "framework/AppServiceRegistry.h"
 #include "framework/utils.h"
 
@@ -608,4 +609,154 @@ namespace OpenWifi::Utils {
 		return DT.timestamp().epochTime();
 	}
 
+    static std::string FileToString(const std::string &Filename) {
+        std::ifstream   ifs(Filename.c_str(),std::ios_base::in|std::ios_base::binary);
+        std::ostringstream os;
+        Poco::StreamCopier::copyStream(ifs,os);
+        return os.str();
+    }
+
+    bool CreateX509CSR(const CSRCreationParameters & Parameters, CSRCreationResults & Results) {
+        int             ret = 0;
+        RSA             *r = nullptr;
+        BIGNUM          *bne = nullptr;
+
+        int             nVersion = 0;
+        unsigned long   e = RSA_F4;
+
+        X509_REQ        *x509_req = nullptr;
+        X509_NAME       *x509_name = nullptr;
+        EVP_PKEY        *pKey = nullptr;
+//        RSA             *tem = nullptr;
+//        BIO             *bio_err = nullptr;
+
+        const char      *szCountry = Parameters.Country.c_str();
+        const char      *szProvince = Parameters.Province.c_str();
+        const char      *szCity = Parameters.City.c_str();
+        const char      *szOrganization = Parameters.Organization.c_str();
+        const char      *szCommon = Parameters.CommonName.c_str();
+
+        Poco::TemporaryFile     CsrPath, PubKey, PrivateKey;
+        std::string             Result;
+        std::ifstream           ifs;
+        std::ostringstream      ss;
+        BIO                     *bp_public = nullptr,
+                *bp_private = nullptr,
+                *bp_csr = nullptr;
+
+        // 1. generate rsa key
+        bne = BN_new();
+        ret = BN_set_word(bne,e);
+        if(ret != 1){
+            goto free_all;
+        }
+
+        r = RSA_new();
+        ret = RSA_generate_key_ex(r, Parameters.bits, bne, nullptr);
+        if(ret != 1){
+            goto free_all;
+        }
+
+        bp_public = BIO_new_file(PubKey.path().c_str(), "w+");
+        ret = PEM_write_bio_RSAPublicKey(bp_public, r);
+        if(ret != 1) {
+            goto free_all;
+        }
+
+        bp_private = BIO_new_file(PrivateKey.path().c_str(), "w+");
+        ret = PEM_write_bio_RSAPrivateKey(bp_private, r, NULL, NULL, 0, NULL, NULL);
+        if(ret != 1) {
+            goto free_all;
+        }
+
+// 2. set version of x509 req
+        x509_req = X509_REQ_new();
+        ret = X509_REQ_set_version(x509_req, nVersion);
+        if (ret != 1){
+            goto free_all;
+        }
+
+// 3. set subject of x509 req
+        x509_name = X509_REQ_get_subject_name(x509_req);
+
+        ret = X509_NAME_add_entry_by_txt(x509_name,"C", MBSTRING_ASC, (const unsigned char*)szCountry, -1, -1, 0);
+        if (ret != 1){
+            goto free_all;
+        }
+
+        ret = X509_NAME_add_entry_by_txt(x509_name,"ST", MBSTRING_ASC, (const unsigned char*)szProvince, -1, -1, 0);
+        if (ret != 1){
+            goto free_all;
+        }
+
+        ret = X509_NAME_add_entry_by_txt(x509_name,"L", MBSTRING_ASC, (const unsigned char*)szCity, -1, -1, 0);
+        if (ret != 1){
+            goto free_all;
+        }
+
+        ret = X509_NAME_add_entry_by_txt(x509_name,"O", MBSTRING_ASC, (const unsigned char*)szOrganization, -1, -1, 0);
+        if (ret != 1){
+            goto free_all;
+        }
+
+        ret = X509_NAME_add_entry_by_txt(x509_name,"CN", MBSTRING_ASC, (const unsigned char*)szCommon, -1, -1, 0);
+        if (ret != 1){
+            goto free_all;
+        }
+
+// 4. set public key of x509 req
+        pKey = EVP_PKEY_new();
+        EVP_PKEY_assign_RSA(pKey, r);
+        r = nullptr;   // will be free rsa when EVP_PKEY_free(pKey)
+
+        ret = X509_REQ_set_pubkey(x509_req, pKey);
+        if (ret != 1){
+            goto free_all;
+        }
+
+// 5. set sign key of x509 req
+        ret = X509_REQ_sign(x509_req, pKey, EVP_sha1());    // return x509_req->signature->length
+        if (ret <= 0){
+            goto free_all;
+        }
+
+        bp_csr = BIO_new_file(CsrPath.path().c_str(),"w");
+        ret = PEM_write_bio_X509_REQ(bp_csr, x509_req);
+
+// 6. free
+        free_all:
+        X509_REQ_free(x509_req);
+        BIO_free_all(bp_csr);
+        BIO_free_all(bp_public);
+        BIO_free_all(bp_private);
+
+        EVP_PKEY_free(pKey);
+        BN_free(bne);
+        if(ret==1) {
+            Results.CSR = FileToString(CsrPath.path());
+            Results.PrivateKey = FileToString(PrivateKey.path());
+            Results.PublicKey = FileToString(PubKey.path());
+        }
+
+        return ret;
+    }
+
+    bool VerifyECKey(const std::string &key) {
+        try {
+            Poco::TemporaryFile F;
+
+            std::ofstream of(F.path().c_str(), std::ios_base::trunc | std::ios_base::out | std::ios_base::binary);
+            of << key;
+            of.close();
+
+            auto Key = Poco::SharedPtr<Poco::Crypto::ECKey>(
+                    new Poco::Crypto::ECKey("", F.path(),""));
+
+            return true;
+        } catch (const Poco::Exception &E) {
+
+        }
+        return false;
+    }
+
 } // namespace OpenWifi::Utils