JWT improvements

common/jwt.cpp

@@ -23,6 +23,11 @@
 #include "common/aixlog.hpp"
 #include "common/base64.h"
 #include "common/utils/string_utils.hpp"
+#include <chrono>
+#include <cstdint>
+#include <exception>
+#include <openssl/x509.h>
+#include <optional>
 #include <sys/types.h>
 
 // 3rd party headers
@@ -45,7 +50,7 @@ static constexpr auto LOG_TAG = "JWT";
 namespace
 {
 
-EVP_PKEY* createPrivate(const std::string& key)
+EVP_PKEY* readKey(const std::string& key)
 {
     // Reads PEM information and retrieves some details
     BIO* keybio = BIO_new_mem_buf((void*)key.c_str(), -1);
@@ -83,120 +88,230 @@ EVP_PKEY* createPrivate(const std::string& key)
 }
 
 
-bool Sign(const std::string& pem_key, const std::string& msg, std::vector<unsigned char>& encoded)
+EVP_PKEY* readCert(const std::string& key)
 {
-    auto* key = createPrivate(pem_key);
+    // Reads PEM information and retrieves some details
-    EVP_MD_CTX* ctx = EVP_MD_CTX_create();
+    BIO* keybio = BIO_new_mem_buf((void*)key.c_str(), -1);
-    if (EVP_DigestSignInit(ctx, nullptr, EVP_sha384(), nullptr, key) <= 0)
+    if (keybio == nullptr)
+    {
+        LOG(ERROR, LOG_TAG) << "BIO_new_mem_buf failed\n";
+        return nullptr;
+    }
+
+    char* name = nullptr;
+    char* header = nullptr;
+    uint8_t* data = nullptr;
+    long datalen = 0;
+    if (PEM_read_bio(keybio, &name, &header, &data, &datalen) == 1)
+    {
+        // Copies the data pointer. D2I functions update it
+        const auto* data_pkey = reinterpret_cast<const uint8_t*>(data);
+        // Detects type and decodes the private key
+        X509* x509 = d2i_X509(nullptr, &data_pkey, datalen);
+        EVP_PKEY* pkey = X509_get_pubkey(x509);
+        if (pkey == nullptr)
+        {
+            LOG(ERROR, LOG_TAG) << "d2i_AutoPrivateKey failed\n";
+        }
+
+        // Free is only required after a PEM_bio_read successful return
+        if (name != nullptr)
+            OPENSSL_free(name);
+        if (header != nullptr)
+            OPENSSL_free(header);
+        if (data != nullptr)
+            OPENSSL_free(data);
+        return pkey;
+    }
+    return nullptr;
+}
+
+bool sign(const std::string& pem_key, const std::string& msg, std::vector<unsigned char>& encoded)
+{
+    auto* key = readKey(pem_key);
+    std::shared_ptr<EVP_MD_CTX> ctx(EVP_MD_CTX_create(), [](auto p) { EVP_MD_CTX_free(p); });
+
+    if (EVP_DigestSignInit(ctx.get(), nullptr, EVP_sha256(), nullptr, key) <= 0)
     {
         LOG(ERROR, LOG_TAG) << "EVP_DigestSignInit failed\n";
         return false;
     }
-    if (EVP_DigestSignUpdate(ctx, msg.c_str(), msg.size()) <= 0)
+    if (EVP_DigestSignUpdate(ctx.get(), msg.c_str(), msg.size()) <= 0)
     {
         LOG(ERROR, LOG_TAG) << "EVP_DigestSignUpdate failed\n";
         return false;
     }
     size_t siglen;
-    if (EVP_DigestSignFinal(ctx, nullptr, &siglen) <= 0)
+    if (EVP_DigestSignFinal(ctx.get(), nullptr, &siglen) <= 0)
     {
         LOG(ERROR, LOG_TAG) << "EVP_DigestSignFinal failed\n";
         return false;
     }
 
     encoded.resize(siglen);
-    if (EVP_DigestSignFinal(ctx, encoded.data(), &siglen) <= 0)
+    if (EVP_DigestSignFinal(ctx.get(), encoded.data(), &siglen) <= 0)
     {
         LOG(ERROR, LOG_TAG) << "EVP_DigestSignFinal failed\n";
         return false;
     }
-    EVP_MD_CTX_free(ctx);
     return true;
 }
 
+
+bool verifySignature(const std::string& pem_cert, unsigned char* MsgHash, size_t MsgHashLen, const char* Msg, size_t MsgLen, bool& Authentic)
+{
+    Authentic = false;
+    auto* key = readCert(pem_cert);
+    EVP_MD_CTX* ctx = EVP_MD_CTX_create();
+
+    if (EVP_DigestVerifyInit(ctx, nullptr, EVP_sha256(), nullptr, key) <= 0)
+    {
+        LOG(ERROR, LOG_TAG) << "EVP_DigestVerifyInit failed\n";
+        return false;
+    }
+    if (EVP_DigestVerifyUpdate(ctx, Msg, MsgLen) <= 0)
+    {
+        LOG(ERROR, LOG_TAG) << "EVP_DigestVerifyInit failed\n";
+        return false;
+    }
+    int authStatus = EVP_DigestVerifyFinal(ctx, MsgHash, MsgHashLen);
+    EVP_MD_CTX_free(ctx);
+    if (authStatus == 1)
+    {
+        Authentic = true;
+        return true;
+    }
+    if (authStatus == 0)
+    {
+        Authentic = false;
+        return true;
+    }
+    LOG(ERROR, LOG_TAG) << "EVP_DigestVerifyFinal failed: " << authStatus << "\n";
+    return false;
+}
+
 } // namespace
 
-Jwt::Jwt()
+Jwt::Jwt() : claims({})
 {
-    // {
-    //   "alg": "RS256",
-    //   "typ": "JWT"
-    // }
-    json header = {{"alg", "RS384"}, {"typ", "JWT"}};
-
-    // {
-    //   "sub": "1234567890",
-    //   "name": "Johannes",
-    //   "admin": true,
-    //   "iat": 1516239022
-    // }
-    json payload = {{"sub", "1234567890"}, {"name", "Johannes"}, {"admin", true}, {"iat", 1516239022}};
-
-    LOG(INFO, LOG_TAG) << "Header: " << header << "\n";
-    LOG(INFO, LOG_TAG) << "Payload: " << payload << "\n";
-    std::string msg = base64url_encode(header.dump()) + "." + base64url_encode(payload.dump());
-    LOG(INFO, LOG_TAG) << "Encoded: " << msg << "\n";
-
-    auto key = "-----BEGIN PRIVATE KEY-----\n"
-               "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCwFxHHKvV6THj1\n"
-               "VjvZQJIW+OjIKF9MPfIN8wJTXn+4EkBJCoBy0NfKHG+FCb90YCPzvLrjL8jKcfhT\n"
-               "/jpaStrYYjABXA1sJS9P+9cwiV9RwTxTrfOiss8F7eZdyZI9UogrPmQa7YbevmwB\n"
-               "XeXIqKzdWQbtQsOJQgoL3vIR7qjUpVQrXPwAYQ6pc7AxS5RHFy8V2Y3sh/+i0aS9\n"
-               "bH/276OAKZNwVIfUIcSVVbBAPvrheR2ezUVoKSumUzek/2uq3cLb5YNF4XSe1Ikv\n"
-               "16lRSGTIQ2KflSYn3mJldFjEKL3sgADTmMhKes+TVveNr7eCvynyDCtHdiLanOKY\n"
-               "PyyOXFTdAgMBAAECggEAAjunU6UBZsBhrUzKEVZ5XnYKxP+xZlmyat0Iy8QFmcY4\n"
-               "z076iNo0o6u/efVWb/RIfcQILlmHXJKG7BEWg4Qc/oRPkwjW47xHULvtw0AOt85G\n"
-               "mfy5UPgfBMvQRs1c/87piqYt0KNFTqhQCCa9GKcTmsf7p5ZtPTLw8Sxt2e6H8LsK\n"
-               "60Jzc2Yw2t3unEb1NnjsTgshjPwFcdrppyRAa2B0Wk3f4ADA1i4vDmTt2+jTq/Hp\n"
-               "yFWup58Djs+lyn4RLnp7jFD2KS/q+qVQsTfGcPeXLMIWHHQDwfjfkzdA74zNi+Pn\n"
-               "C4e/iXIsC7VH4BJ8qrVH20WqTXRyuZ1uEF+32XbcSQKBgQDAtBXbnuGhu2llnfP2\n"
-               "dxJ5qtRjxTHedZs9UMEuy5pkLMi4JsIdjf072lqizpG7DE9kfiERwXJ/Spe4OMMh\n"
-               "MvWBpnJieTHnouAMpDVootVbSCpikOSGzClHZwpl6KU7pv9Q+Hv2xkSnTJLsakSt\n"
-               "qlOsG6cwK56kXiwYG0RsAn6lhQKBgQDp7gNE4J6wf9SZHErpyh+65VqqcF5+chNq\n"
-               "DTwFlb7U31WcDOA3hUHaQfrlwfblMAgnlVMofopdP4KIIgSWE31cCziBp8ZRy/25\n"
-               "2/aNkDoPEN59Ibk1RWLYsCzcQIAQrTjvfDMn3An1E9B3qYFzfdLKZItb8p3cxpO/\n"
-               "sMUwQRqFeQKBgDb7av0lwQUPXwwiXDhnUvsp9b2dxxPNBIUjJGuApkWMzZxVWq9q\n"
-               "EuXf8FphjA0Nfx2SK0dQpaWSF+X1NB+l1YyvfBWCtO19eGXC+IYpZ6zK02UaKEoZ\n"
-               "uHFqAfp/vZ1ekZx9uYj4myAM5iLUU1Iltgf2P+arm3EUeYpLRWN39sCtAoGBALZ0\n"
-               "egBC4gLv8TXqp1Np3w26zdiaBFnDR/kzkVkZztnhx7gLIuaq/Q3q4HJLsvJXYETf\n"
-               "ZxjyeaD5ZCohvkn/sYsVBWG7JieuX5uTQN5xW5dcpOwcXYR7Nfmkj5jKhhh7wyin\n"
-               "So8QRIPujG6IuvsFbF+HxFpXBWGpUJv2mBZm8PShAoGBALU/KNl1El0HpxTr3wgj\n"
-               "YY6eU3snn0Oa5Ci3k/FMWd1QTtVsf4Mym0demxshdC75L+qzCS0m5jAo9tm0keY9\n"
-               "A4F3VRlsuUyuAja+qDU2xMo3jnFKOIyMfN4mVSiFkqnq3eQ4xHgViyIEyr+8AbA4\n"
-               "ajjiCZsv+OITxQ+TTHeGDsdD\n"
-               "-----END PRIVATE KEY-----\n";
-
-    std::vector<unsigned char> encoded;
-    if (Sign(key, msg, encoded))
-    {
-        std::string signature = base64url_encode(encoded.data(), encoded.size());
-        LOG(INFO, LOG_TAG) << "Signature: " << signature << "\n";
-    }
-    else
-    {
-        LOG(ERROR, LOG_TAG) << "Failed to sign\n";
-    }
 }
 
+std::optional<std::chrono::seconds> Jwt::getIat() const
+{
+    if (!claims.contains("iat"))
+        return std::nullopt;
+    return std::chrono::seconds(claims.at("iat").get<int64_t>());
+}
 
-bool Jwt::decode(const std::string& token)
+void Jwt::setIat(const std::optional<std::chrono::seconds>& iat)
+{
+    if (iat.has_value())
+        claims["iat"] = iat->count();
+    else if (claims.contains("iat"))
+        claims.erase("iat");
+}
+
+std::optional<std::chrono::seconds> Jwt::getExp() const
+{
+    if (!claims.contains("exp"))
+        return std::nullopt;
+    return std::chrono::seconds(claims.at("exp").get<int64_t>());
+}
+
+void Jwt::setExp(const std::optional<std::chrono::seconds>& exp)
+{
+    if (exp.has_value())
+        claims["exp"] = exp->count();
+    else if (claims.contains("exp"))
+        claims.erase("exp");
+}
+
+std::optional<std::string> Jwt::getSub() const
+{
+    if (!claims.contains("sub"))
+        return std::nullopt;
+    return claims.at("sub").get<std::string>();
+}
+
+void Jwt::setSub(const std::optional<std::string>& sub)
+{
+    if (sub.has_value())
+        claims["sub"] = sub.value();
+    else if (claims.contains("sub"))
+        claims.erase("sub");
+}
+
+bool Jwt::parse(const std::string& token, const std::string& pem_cert)
 {
     std::vector<std::string> parts = utils::string::split(token, '.');
     if (parts.size() != 3)
     {
+        LOG(ERROR, LOG_TAG) << "Token '" << token << "' not in the format <header>.<payload>.<signature>\n";
         return false;
     }
 
-    LOG(INFO, LOG_TAG) << "Header: " << base64url_decode(parts[0]) << "\n";
+    std::string header = base64url_decode(parts[0]);
-    LOG(INFO, LOG_TAG) << "Payload: " << base64url_decode(parts[1]) << "\n";
+    std::string payload = base64url_decode(parts[1]);
+    LOG(DEBUG, LOG_TAG) << "Header: " << header << ", payload: " << payload << "\n";
 
-    header_ = json::parse(base64url_decode(parts[0]));
+    try
-    payload_ = json::parse(base64url_decode(parts[1]));
+    {
+        json jheader = json::parse(header);
+        claims = json::parse(payload);
         std::string signature = parts[2];
-
+        LOG(INFO, LOG_TAG) << "Header: " << jheader << "\n";
-    LOG(INFO, LOG_TAG) << "Header: " << header_ << "\n";
+        LOG(INFO, LOG_TAG) << "Payload: " << claims << "\n";
-    LOG(INFO, LOG_TAG) << "Payload: " << payload_ << "\n";
         LOG(INFO, LOG_TAG) << "Signature: " << signature << "\n";
-
+        auto binary = base64url_decode(signature);
+        std::string msg = parts[0] + "." + parts[1];
+        bool auth;
+        if (!verifySignature(pem_cert, reinterpret_cast<unsigned char*>(binary.data()), binary.size(), msg.c_str(), msg.size(), auth))
+        {
+            LOG(ERROR, LOG_TAG) << "Failed to verify signature\n";
+            return false;
+        }
+        if (!auth)
+        {
+            LOG(ERROR, LOG_TAG) << "Wrong signature\n";
+            return false;
+        }
         return true;
     }
+    catch (std::exception& e)
+    {
+        LOG(ERROR, LOG_TAG) << "Error parsing JWT header or payload: " << e.what() << "\n";
+    }
+    return false;
+}
+
+
+std::optional<std::string> Jwt::getToken(const std::string& pem_key) const
+{
+    json header = {{"typ", "JWT"}};
+    if (pem_key.find("-----BEGIN PRIVATE KEY-----") == 0)
+        header["alg"] = "RS256";
+    // if (pem_key.find("-----BEGIN EC PRIVATE KEY-----") == 0)
+    //     header["alg"] = "ES256";
+    else
+    {
+        LOG(ERROR, LOG_TAG) << "PEM key must be an RSA key\n";
+        return std::nullopt;
+    }
+
+    LOG(DEBUG, LOG_TAG) << "Header: " << header << ", payload: " << claims << "\n";
+    std::string msg = base64url_encode(header.dump()) + "." + base64url_encode(claims.dump());
+    LOG(DEBUG, LOG_TAG) << "Encoded: " << msg << "\n";
+
+    std::vector<unsigned char> encoded;
+    if (sign(pem_key, msg, encoded))
+    {
+        std::string signature = base64url_encode(encoded.data(), encoded.size());
+        LOG(DEBUG, LOG_TAG) << "Signature: " << signature << "\n";
+        auto token = msg + "." + signature;
+        LOG(DEBUG, LOG_TAG) << "Token: " << token << "\n";
+        return token;
+    }
+
+    LOG(ERROR, LOG_TAG) << "Failed to sign token\n";
+    return std::nullopt;
+}

common/jwt.hpp

@@ -22,6 +22,8 @@
 #include "common/json.hpp"
 
 // standard headers
+#include <chrono>
+#include <optional>
 #include <string>
 
 
@@ -53,19 +55,63 @@ https://datatracker.ietf.org/doc/html/rfc7518#section-3
    | none         | No digital signature or MAC   | Optional           |
    |              | performed                     |                    |
    +--------------+-------------------------------+--------------------+
-*/
+
+
+https://auth0.com/docs/secure/tokens/json-web-tokens/json-web-token-claims
+
+Registered claims
+The JWT specification defines seven reserved claims that are not required, but are recommended to allow interoperability with third-party applications. These
+are:
+- iss (issuer): Issuer of the JWT
+- sub (subject): Subject of the JWT (the user)
+- aud (audience): Recipient for which the JWT is intended
+- exp (expiration time): Time after which the JWT expires
+- nbf (not before time): Time before which the JWT must not be accepted for processing
+- iat (issued at time): Time at which the JWT was issued; can be used to determine age of the JWT
+- jti (JWT ID): Unique identifier; can be used to prevent the JWT from being replayed (allows a token to be used only once)
+
 
 // https://techdocs.akamai.com/iot-token-access-control/docs/generate-jwt-rsa-keys
+*/
+
 using json = nlohmann::json;
 
+
+/// Json Web Token in RS256 format
 class Jwt
 {
 public:
+    /// c'tor
     Jwt();
 
-    bool decode(const std::string& token);
+    /// Parse an base64 url encoded token of the form "<header>.<payload>.<signature>"
+    /// @param token The token
+    /// @param pem_cert Certificate in PEM format to verify the signature
+    /// @return true on success, else false
+    bool parse(const std::string& token, const std::string& pem_cert);
+    /// Create an base64 url encoded token of the form "<header>.<payload>.<signature>"
+    /// @param pem_key Private key in PEM format to sign the token
+    /// @return the token or nullopt if failed
+    std::optional<std::string> getToken(const std::string& pem_key) const;
 
-private:
+    /// Get the iat "Issued at time" claim
-    json header_;
+    /// @return the claim or nullopt, if not present
-    json payload_;
+    std::optional<std::chrono::seconds> getIat() const;
+    /// Set the iat "Issued at time" claim, use nullopt to delete the iat
+    void setIat(const std::optional<std::chrono::seconds>& iat);
+
+    /// Get the exp "Expiration time" claim
+    /// @return the claim or nullopt, if not present
+    std::optional<std::chrono::seconds> getExp() const;
+    /// Set the exp "Expiration time" claim, use nullopt to delete the exp
+    void setExp(const std::optional<std::chrono::seconds>& exp);
+
+    /// Get the sub "Subject" claim
+    /// @return the claim or nullopt, if not present
+    std::optional<std::string> getSub() const;
+    /// Set the sub "Subject" claim, use nullopt to delete the sub
+    void setSub(const std::optional<std::string>& sub);
+
+    /// The token's raw payload (claims) in json format
+    json claims;
 };

test/test_main.cpp

@@ -47,14 +47,132 @@ TEST_CASE("String utils")
 
 TEST_CASE("JWT")
 {
-    AixLog::Log::init<AixLog::SinkCout>(AixLog::Severity::debug);
+#if 0
-    Jwt jwt;
+    /// ECDSA
+    {
+        const auto* key = "-----BEGIN EC PRIVATE KEY-----\n"
+                          "MIHcAgEBBEIAarXYdFyTZIM2NGgbjPj8UBlBRYjDKrEfHIDuP1sYGLCJDqqx/GxH\n"
+                          "DpP8mmpTL2dII8cZSbW7zqRv43ZcwK2dq3OgBwYFK4EEACOhgYkDgYYABADPIxdE\n"
+                          "ubzaxsCtZAhbRnG3SJMZoD/0+sFO+r/5m9o4PPAz7cBnSEG3hBThsa+uBE+rfeah\n"
+                          "RagSvgYzRyn85/N0YQBsE6V3htaOBrmoW4PBo/Lg0GwXe5qz7Fp98DuwpDC3OtXa\n"
+                          "43Mgl0rbcwtQ6e0xcAxkLJ0tDfpomiM9Lj5gM+WT1g==\n"
+                          "-----END EC PRIVATE KEY-----\n";
 
-    jwt.decode(
+        const auto* cert = "-----BEGIN CERTIFICATE-----\n"
-        "eyJhbGciOiJSUzM4NCIsInR5cCI6IkpXVCJ9.eyJhZG1pbiI6dHJ1ZSwiaWF0IjoxNTE2MjM5MDIyLCJuYW1lIjoiSm9oYW5uZXMiLCJzdWIiOiIxMjM0NTY3ODkwIn0."
+                           "MIICVjCCAbigAwIBAgIUBrGbikLGcul0Cia5tBCsPDm7/P4wCgYIKoZIzj0EAwIw\n"
-        "QooKYcDKXwds9GF6Qgs5qTgXZyjPIf9OD_eBYIako7EoC18dqkvPgpwEar_Npck5wSGDPxcMCm9VxRHwv_LP4yelncf08BMu0JRK7vSqKQ8GGC2YoRILsOXD4nIf2mDUJ4CVo5fCbKuhwxE_"
+                           "PTELMAkGA1UEBhMCREUxDDAKBgNVBAgMA05SVzEPMA0GA1UEBwwGQWFjaGVuMQ8w\n"
-        "lBdiQXFGF6NaQ-02LYTnoRub2x1wtHrQam5eYTaNPjaY2ANvSpRK8CCA6jWd6P5qqgedcPtE4J2HLDFR2GefFjhOYYaZP-LMhdbHDEoThk05-bQVyXXXg-7RCqCfzE_"
+                           "DQYDVQQKDAZCYWRBaXgwHhcNMjQwNjAzMTk0NzEzWhcNMjUwNjAzMTk0NzEzWjA9\n"
-        "H5fx4w8t6JYudM8PsRoK3kE8vGsR7tHRGi0CBJqTMTxIYnjaQPQUd8OYFbux3TxEV0Kr9kQ");
+                           "MQswCQYDVQQGEwJERTEMMAoGA1UECAwDTlJXMQ8wDQYDVQQHDAZBYWNoZW4xDzAN\n"
+                           "BgNVBAoMBkJhZEFpeDCBmzAQBgcqhkjOPQIBBgUrgQQAIwOBhgAEAM8jF0S5vNrG\n"
+                           "wK1kCFtGcbdIkxmgP/T6wU76v/mb2jg88DPtwGdIQbeEFOGxr64ET6t95qFFqBK+\n"
+                           "BjNHKfzn83RhAGwTpXeG1o4Guahbg8Gj8uDQbBd7mrPsWn3wO7CkMLc61drjcyCX\n"
+                           "SttzC1Dp7TFwDGQsnS0N+miaIz0uPmAz5ZPWo1MwUTAdBgNVHQ4EFgQUy+1q8Nh5\n"
+                           "qbrckn9hdMT7WXhha2gwHwYDVR0jBBgwFoAUy+1q8Nh5qbrckn9hdMT7WXhha2gw\n"
+                           "DwYDVR0TAQH/BAUwAwEB/zAKBggqhkjOPQQDAgOBiwAwgYcCQgCYarPzdeupTvEs\n"
+                           "CC5OlWj9pzUJDY4R0kaEe94g+KwTsgyaY1OzhHKwmu4E2ggrU0BN/HTpRYrYhtFz\n"
+                           "HnDpYIN5XAJBK9fgry78uAiN4RZHPfWBKJ/NMcCZO/dXLbxoFlh2+6FXD/TmABHW\n"
+                           "XsA/SmQzK2kJOKkBu9jBwNPiFZUQrJJ5msE=\n"
+                           "-----END CERTIFICATE-----\n";
+
+        Jwt jwt;
+        jwt.setIat(std::chrono::seconds(1516239022));
+        jwt.setSub("Badaix");
+        std::optional<std::string> token = jwt.getToken(key);
+        REQUIRE(token.has_value());
+        LOG(INFO, "TEST") << "Token: " << *token << "\n";
+        REQUIRE(token.value() == "eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE1MTYyMzkwMjIsInN1YiI6IkJhZGFpeCJ9.MIGHAkEDxp53c--"
+                                 "MwMQAiTR5pnXlCunmqruZ8U6owKIfm06zgcAVswmTAhXFMIF28X9Yu2_F0o2LjgSWfBP9NEKg6BXy-gJCAevKxaKwxv1bbPOf7kGOeBzESuq8h_"
+                                 "pCJwGEA1WW9tflQgpsU52oBmIA-6fAHvl_EVPh4KIXoTQ71BRfacDMDzG2AA");
+
+        REQUIRE(jwt.parse(token.value(), cert));
+        REQUIRE(jwt.getSub().has_value());
+        REQUIRE(jwt.getSub().value() == "Badaix");
+        REQUIRE(jwt.getIat().has_value());
+        REQUIRE(jwt.getIat().value() == std::chrono::seconds(1516239022));
+        REQUIRE(!jwt.getExp().has_value());
+    }
+#endif
+
+    /// RSA keys
+    {
+        AixLog::Log::init<AixLog::SinkCout>(AixLog::Severity::debug);
+        const auto* key = "-----BEGIN PRIVATE KEY-----\n"
+                          "MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQCwFxHHKvV6THj1\n"
+                          "VjvZQJIW+OjIKF9MPfIN8wJTXn+4EkBJCoBy0NfKHG+FCb90YCPzvLrjL8jKcfhT\n"
+                          "/jpaStrYYjABXA1sJS9P+9cwiV9RwTxTrfOiss8F7eZdyZI9UogrPmQa7YbevmwB\n"
+                          "XeXIqKzdWQbtQsOJQgoL3vIR7qjUpVQrXPwAYQ6pc7AxS5RHFy8V2Y3sh/+i0aS9\n"
+                          "bH/276OAKZNwVIfUIcSVVbBAPvrheR2ezUVoKSumUzek/2uq3cLb5YNF4XSe1Ikv\n"
+                          "16lRSGTIQ2KflSYn3mJldFjEKL3sgADTmMhKes+TVveNr7eCvynyDCtHdiLanOKY\n"
+                          "PyyOXFTdAgMBAAECggEAAjunU6UBZsBhrUzKEVZ5XnYKxP+xZlmyat0Iy8QFmcY4\n"
+                          "z076iNo0o6u/efVWb/RIfcQILlmHXJKG7BEWg4Qc/oRPkwjW47xHULvtw0AOt85G\n"
+                          "mfy5UPgfBMvQRs1c/87piqYt0KNFTqhQCCa9GKcTmsf7p5ZtPTLw8Sxt2e6H8LsK\n"
+                          "60Jzc2Yw2t3unEb1NnjsTgshjPwFcdrppyRAa2B0Wk3f4ADA1i4vDmTt2+jTq/Hp\n"
+                          "yFWup58Djs+lyn4RLnp7jFD2KS/q+qVQsTfGcPeXLMIWHHQDwfjfkzdA74zNi+Pn\n"
+                          "C4e/iXIsC7VH4BJ8qrVH20WqTXRyuZ1uEF+32XbcSQKBgQDAtBXbnuGhu2llnfP2\n"
+                          "dxJ5qtRjxTHedZs9UMEuy5pkLMi4JsIdjf072lqizpG7DE9kfiERwXJ/Spe4OMMh\n"
+                          "MvWBpnJieTHnouAMpDVootVbSCpikOSGzClHZwpl6KU7pv9Q+Hv2xkSnTJLsakSt\n"
+                          "qlOsG6cwK56kXiwYG0RsAn6lhQKBgQDp7gNE4J6wf9SZHErpyh+65VqqcF5+chNq\n"
+                          "DTwFlb7U31WcDOA3hUHaQfrlwfblMAgnlVMofopdP4KIIgSWE31cCziBp8ZRy/25\n"
+                          "2/aNkDoPEN59Ibk1RWLYsCzcQIAQrTjvfDMn3An1E9B3qYFzfdLKZItb8p3cxpO/\n"
+                          "sMUwQRqFeQKBgDb7av0lwQUPXwwiXDhnUvsp9b2dxxPNBIUjJGuApkWMzZxVWq9q\n"
+                          "EuXf8FphjA0Nfx2SK0dQpaWSF+X1NB+l1YyvfBWCtO19eGXC+IYpZ6zK02UaKEoZ\n"
+                          "uHFqAfp/vZ1ekZx9uYj4myAM5iLUU1Iltgf2P+arm3EUeYpLRWN39sCtAoGBALZ0\n"
+                          "egBC4gLv8TXqp1Np3w26zdiaBFnDR/kzkVkZztnhx7gLIuaq/Q3q4HJLsvJXYETf\n"
+                          "ZxjyeaD5ZCohvkn/sYsVBWG7JieuX5uTQN5xW5dcpOwcXYR7Nfmkj5jKhhh7wyin\n"
+                          "So8QRIPujG6IuvsFbF+HxFpXBWGpUJv2mBZm8PShAoGBALU/KNl1El0HpxTr3wgj\n"
+                          "YY6eU3snn0Oa5Ci3k/FMWd1QTtVsf4Mym0demxshdC75L+qzCS0m5jAo9tm0keY9\n"
+                          "A4F3VRlsuUyuAja+qDU2xMo3jnFKOIyMfN4mVSiFkqnq3eQ4xHgViyIEyr+8AbA4\n"
+                          "ajjiCZsv+OITxQ+TTHeGDsdD\n"
+                          "-----END PRIVATE KEY-----\n";
+
+        const auto* cert = "-----BEGIN CERTIFICATE-----\n"
+                           "MIIE3TCCAsWgAwIBAgIUW+CDwjHiUAMf5yeFct8FatvUWhYwDQYJKoZIhvcNAQEL\n"
+                           "BQAwVDELMAkGA1UEBhMCREUxDDAKBgNVBAgMA05SVzEPMA0GA1UEBwwGQWFjaGVu\n"
+                           "MQ8wDQYDVQQKDAZCYWRhaXgxFTATBgNVBAMMDGxhcHRvcC5sb2NhbDAeFw0yNDA1\n"
+                           "MTAxNTA2NDdaFw0yNTA5MjIxNTA2NDdaMFQxCzAJBgNVBAYTAkRFMQwwCgYDVQQI\n"
+                           "DANOUlcxDzANBgNVBAcMBkFhY2hlbjEPMA0GA1UECgwGQmFkYWl4MRUwEwYDVQQD\n"
+                           "DAxsYXB0b3AubG9jYWwwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCw\n"
+                           "FxHHKvV6THj1VjvZQJIW+OjIKF9MPfIN8wJTXn+4EkBJCoBy0NfKHG+FCb90YCPz\n"
+                           "vLrjL8jKcfhT/jpaStrYYjABXA1sJS9P+9cwiV9RwTxTrfOiss8F7eZdyZI9Uogr\n"
+                           "PmQa7YbevmwBXeXIqKzdWQbtQsOJQgoL3vIR7qjUpVQrXPwAYQ6pc7AxS5RHFy8V\n"
+                           "2Y3sh/+i0aS9bH/276OAKZNwVIfUIcSVVbBAPvrheR2ezUVoKSumUzek/2uq3cLb\n"
+                           "5YNF4XSe1Ikv16lRSGTIQ2KflSYn3mJldFjEKL3sgADTmMhKes+TVveNr7eCvyny\n"
+                           "DCtHdiLanOKYPyyOXFTdAgMBAAGjgaYwgaMwHwYDVR0jBBgwFoAUG790F3RT+ckl\n"
+                           "UB16DIH7Hs5D0fYwCQYDVR0TBAIwADALBgNVHQ8EBAMCBPAwSQYDVR0RBEIwQIIM\n"
+                           "bGFwdG9wLmxvY2FsggwxOTIuMTY4LjAuMzmCCTEyNy4wLjAuMYIKcnBpNS5sb2Nh\n"
+                           "bIILMTkyLjE2OC4wLjMwHQYDVR0OBBYEFNxTG9vR5KC+XgGVsRb76DA7EKbiMA0G\n"
+                           "CSqGSIb3DQEBCwUAA4ICAQA9cTmiDYiQKz/0BUMYA3xfy48ajS5F3PVOGRQsoOyO\n"
+                           "gRcut5mxH9xzhJc2rbwRKyuZBZV8EuEDImxNf41L72nUUyrfOfC2AV92IeXMGVzg\n"
+                           "Qvw8ypXTI3wRFFeWmjyuFK42wcVXlZd8Rx6hWz7BVDR9fBVSHV3I2Iyv98RVukwv\n"
+                           "X2hnZu+6Bn8fJ890YMmpX1sAfgcSFY863zNyj3n3/tjoMYHSYwWMC5cEa6BotSjH\n"
+                           "dAkjoIQwWwUAJWxzwOJwSolj81oM/7BcZ8UmHhGWuVYmxr/NfSfe7pFb0H6Fkktb\n"
+                           "S+8qUjhIm8YsrC2qO6DCCiOWqSwxoyjmX1tap0IyciSfRyyFlgSBs4v8/Y33wIlW\n"
+                           "ktH0A4i9CZPlOGTy8hDGhwAxGY8unfuDSoAUr4RQpoJDGSIEeyUpWbfUVxdXhSI9\n"
+                           "FgkhWQq28cauJPRcbNILCmz+iUh2DlehlBW4lc6PwcBF5PRknAT+81lRRWPnw1nV\n"
+                           "Qmg7wFnm+G1K6Ip2yz69hvywQddkZ3nTFcIxDfXWpD+8w+RdITI0Q9jNeKAuHRIq\n"
+                           "eHg9/cG/dph/CE/W/mN1sjO5E+oj8wbguBmBe+r6Ga/nQUwSYAGsvr5JlmDFDwqR\n"
+                           "Q3Q4ZajYb45p1McbRnN1ImovW9o6GOS3JUZcMBBLyZH0fmbikUb80bj++artyfAD\n"
+                           "Iw==\n"
+                           "-----END CERTIFICATE-----\n";
+
+        Jwt jwt;
+        jwt.setIat(std::chrono::seconds(1516239022));
+        jwt.setSub("Badaix");
+        std::optional<std::string> token = jwt.getToken(key);
+        REQUIRE(token.has_value());
+        REQUIRE(token.value() ==
+                "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJpYXQiOjE1MTYyMzkwMjIsInN1YiI6IkJhZGFpeCJ9.LtKDGnT2OSgvWLECReajyMmUv7ApJeRu83MZhDM7d_"
+                "1t1zy2Z08BQZEEB58WzR1vZAtRGHDVrYytJaVCPzibQN4eZ1F4m0gDk83hxQPTAKsbwjtzi7pUJzvaBa1ni4ysc9POtoi_M1OtNk5xxziyk5VP1Ph-"
+                "TQbm9BCPfpA8bSUCx0LFrm5gyCD3irkww_W3RwDc2ghrjDCRNCyu4R9__lrCRGdx3Z8i0YMB_obuShcYzJXFSxG8adTSs3PQ_R4NXR94-vydVrvBxqe79apocFVrs_"
+                "c9Ub8TIFynzqp9L_s206nb2N3C1WfUkKeQ1E7gAgVq8b4SM0OZsmkERQ0P0w");
+
+        REQUIRE(jwt.parse(token.value(), cert));
+        REQUIRE(jwt.getSub().has_value());
+        REQUIRE(jwt.getSub().value() == "Badaix");
+        REQUIRE(jwt.getIat().has_value());
+        REQUIRE(jwt.getIat().value() == std::chrono::seconds(1516239022));
+        REQUIRE(!jwt.getExp().has_value());
+    }
 }