LibItsSecurity_externals.cc

#include "LibItsSecurity_Functions.hh"

#include "sha256.hh"
#include "sha384.hh"
#include "hmac.hh"

#include "security_ecc.hh"

#include "security_services.hh"

#include <openssl/ec.h>
#include <openssl/ecdsa.h>

#include "loggers.hh"

namespace LibItsSecurity__Functions 
{

  // FIXME Unify code with security_services
  
  /**
   * \fn OCTETSTRING fx_hashWithSha256(const OCTETSTRING& p__toBeHashedData);
   * \brief Produces a 256-bit (32-byte) hash value
   * \param[in] p__toBeHashedData The data to be used to calculate the hash value
   * \return  The hash value
   */
  OCTETSTRING fx__hashWithSha256(
                                 const OCTETSTRING& p__toBeHashedData
                                 ) {
    sha256 hash;
    std::vector<unsigned char> tbh(static_cast<const unsigned char *>(p__toBeHashedData), p__toBeHashedData.lengthof() + static_cast<const unsigned char *>(p__toBeHashedData));
    std::vector<unsigned char> hashData;
    hash.generate(tbh, hashData);
    return OCTETSTRING(hashData.size(), hashData.data());
  } // End of function fx__hashWithSha256

  /**
   * \fn OCTETSTRING fx_hashWithSha384(const OCTETSTRING& p__toBeHashedData);
   * \brief Produces a 384-bit (48-byte) hash value
   * \param[in] p__toBeHashedData Data to be used to calculate the hash value
   * \return The hash value
   */
  OCTETSTRING fx__hashWithSha384(
                                 const OCTETSTRING& p__toBeHashedData
                                 ) {
    sha384 hash;
    std::vector<unsigned char> tbh(static_cast<const unsigned char *>(p__toBeHashedData), p__toBeHashedData.lengthof() + static_cast<const unsigned char *>(p__toBeHashedData));
    std::vector<unsigned char> hashData;
    hash.generate(tbh, hashData);
    return OCTETSTRING(hashData.size(), hashData.data());
  } // End of function fx__hashWithSha384

  /**
   * \fn OCTETSTRING fx__signWithEcdsaNistp256WithSha256(const OCTETSTRING& p__toBeSignedSecuredMessage, const OCTETSTRING& p__privateKey);
   * \brief Produces a Elliptic Curve Digital Signature Algorithm (ECDSA) signature
   * \param[in] p__toBeSignedSecuredMessage The data to be signed
   * \param[in] p__certificateIssuer Certificate issuer
   * \param[in] p__privateKey The private key
   * \return The signature value
   */
  OCTETSTRING fx__signWithEcdsaNistp256WithSha256(
                                                  const OCTETSTRING& p__toBeSignedSecuredMessage,
                                                  const OCTETSTRING& p__certificateIssuer,
                                                  const OCTETSTRING& p__privateKey
                                                  ) {
    // Sanity checks
    if (p__certificateIssuer.lengthof() != 8) {
      loggers::get_instance().log("fx__signWithEcdsaNistp256WithSha256: Wrong parameters");
      return OCTETSTRING();
    }
    
    // Calculate the SHA256 of the data
    sha256 hash;
    std::vector<unsigned char> hashData;
    // TODO Create SHX interface and add generate method with std::vector
    std::vector<unsigned char> tbs(static_cast<const unsigned char *>(p__toBeSignedSecuredMessage), p__toBeSignedSecuredMessage.lengthof() + static_cast<const unsigned char *>(p__toBeSignedSecuredMessage));
    hash.generate(tbs, hashData);
    if (p__certificateIssuer == int2oct(0, 8)) {
      std::vector<unsigned char> issuer = std::vector<unsigned char>(static_cast<const unsigned char*>(p__certificateIssuer), p__certificateIssuer.lengthof() + static_cast<const unsigned char*>(p__certificateIssuer));
      hashData.insert(hashData.end(), issuer.cbegin(), issuer.cend());
    }
    // Calculate the signature
    std::vector<unsigned char> p_key(static_cast<const unsigned char *>(p__privateKey), static_cast<const unsigned char *>(p__privateKey) + p__privateKey.lengthof());
    security_ecc k(ec_elliptic_curves::nist_p_256, p_key);
    std::vector<unsigned char> r_sig;
    std::vector<unsigned char> s_sig;
    if (k.sign(hashData, r_sig, s_sig) == 0) {
      OCTETSTRING os(r_sig.size(), r_sig.data());
      // loggers::get_instance().log_to_hexa("r_sig= ", os); 
      // loggers::get_instance().log_to_hexa("s_sig= ", OCTETSTRING(s_sig.size(), s_sig.data()); 
      os += OCTETSTRING(s_sig.size(), s_sig.data());
      // loggers::get_instance().log_to_hexa("sig= ", os); 
      return os;
    }

    return OCTETSTRING();
  }

  /**
   * \fn OCTETSTRING fx__signWithEcdsaBrainpoolp256WithSha256(const OCTETSTRING& p__toBeSignedSecuredMessage, const OCTETSTRING& p__privateKey);
   * \brief Produces a Elliptic Curve Digital Signature Algorithm (ECDSA) signature
   * \param[in] p__toBeSignedSecuredMessage The data to be signed
   * \param[in] p__certificateIssuer Certificate issuer
   * \param[in] p__privateKey The private key
   * \return The signature value
   */
  OCTETSTRING fx__signWithEcdsaBrainpoolp256WithSha256(
                                                       const OCTETSTRING& p__toBeSignedSecuredMessage,
                                                       const OCTETSTRING& p__certificateIssuer,
                                                       const OCTETSTRING& p__privateKey
                                                       ) {
    // Sanity checks
    if (p__certificateIssuer.lengthof() != 8) {
      loggers::get_instance().log("fx__signWithEcdsaBrainpoolp256WithSha256: Wrong parameters");
      return OCTETSTRING();
    }
    
    // Calculate the SHA256 of the data
    sha256 hash;
    std::vector<unsigned char> hashData;
    // TODO Create SHX interface and add generate method with std::vector
    std::vector<unsigned char> tbs(static_cast<const unsigned char *>(p__toBeSignedSecuredMessage), p__toBeSignedSecuredMessage.lengthof() + static_cast<const unsigned char *>(p__toBeSignedSecuredMessage));
    hash.generate(tbs, hashData);
    if (p__certificateIssuer == int2oct(0, 8)) {
      std::vector<unsigned char> issuer = std::vector<unsigned char>(static_cast<const unsigned char*>(p__certificateIssuer), p__certificateIssuer.lengthof() + static_cast<const unsigned char*>(p__certificateIssuer));
      hashData.insert(hashData.end(), issuer.cbegin(), issuer.cend());
    }
    // Calculate the signature
    std::vector<unsigned char> p_key(static_cast<const unsigned char *>(p__privateKey), static_cast<const unsigned char *>(p__privateKey) + p__privateKey.lengthof());
    security_ecc k(ec_elliptic_curves::brainpool_p_256_r1, p_key);
    std::vector<unsigned char> r_sig;
    std::vector<unsigned char> s_sig;
    if (k.sign(hashData, r_sig, s_sig) == 0) {
      OCTETSTRING os(r_sig.size(), r_sig.data());
      // loggers::get_instance().log_to_hexa("r_sig= ", os); 
      // loggers::get_instance().log_to_hexa("s_sig= ", OCTETSTRING(s_sig.size(), s_sig.data()); 
      os += OCTETSTRING(s_sig.size(), s_sig.data());
      // loggers::get_instance().log_to_hexa("sig= ", os); 
      return os;
    }

    return OCTETSTRING();
  }

  /**
   * \fn OCTETSTRING fx__signWithEcdsaBrainpoolp384WithSha384(const OCTETSTRING& p__toBeSignedSecuredMessage, const OCTETSTRING& p__privateKey);
   * \brief Produces a Elliptic Curve Digital Signature Algorithm (ECDSA) signature
   * \param[in] p__toBeSignedSecuredMessage The data to be signed
   * \param[in] p__certificateIssuer Certificate issuer
   * \param[in] p__privateKey The private key
   * \return The signature value
   */
  OCTETSTRING fx__signWithEcdsaBrainpoolp384WithSha384(
                                                       const OCTETSTRING& p__toBeSignedSecuredMessage,
                                                       const OCTETSTRING& p__certificateIssuer,
                                                       const OCTETSTRING& p__privateKey
                                                       ) {
    // Sanity checks
    if (p__certificateIssuer.lengthof() != 8) {
      loggers::get_instance().log("fx__signWithEcdsaBrainpoolp384WithSha384: Wrong parameters");
      return OCTETSTRING();
    }
    
    // Calculate the SHA384 of the data
    sha384 hash;
    std::vector<unsigned char> hashData;
    // TODO Create SHX interface and add generate method with std::vector
    std::vector<unsigned char> tbs(static_cast<const unsigned char *>(p__toBeSignedSecuredMessage), p__toBeSignedSecuredMessage.lengthof() + static_cast<const unsigned char *>(p__toBeSignedSecuredMessage));
    hash.generate(tbs, hashData);
    if (p__certificateIssuer == int2oct(0, 8)) {
      std::vector<unsigned char> issuer = std::vector<unsigned char>(static_cast<const unsigned char*>(p__certificateIssuer), p__certificateIssuer.lengthof() + static_cast<const unsigned char*>(p__certificateIssuer));
      hashData.insert(hashData.end(), issuer.cbegin(), issuer.cend());
    }
    // Calculate the signature
    std::vector<unsigned char> p_key(static_cast<const unsigned char *>(p__privateKey), static_cast<const unsigned char *>(p__privateKey) + p__privateKey.lengthof());
    security_ecc k(ec_elliptic_curves::brainpool_p_384_r1, p_key);
    std::vector<unsigned char> r_sig;
    std::vector<unsigned char> s_sig;
    if (k.sign(hashData, r_sig, s_sig) == 0) {
      OCTETSTRING os(r_sig.size(), r_sig.data());
      //loggers::get_instance().log_to_hexa("fx__signWithEcdsaBrainpoolp384WithSha384: r_sig= ", os); 
      //loggers::get_instance().log_to_hexa("fx__signWithEcdsaBrainpoolp384WithSha384: s_sig= ", OCTETSTRING(s_sig.size(), s_sig.data())); 
      os += OCTETSTRING(s_sig.size(), s_sig.data());
      //loggers::get_instance().log_to_hexa("fx__signWithEcdsaBrainpoolp384WithSha384: sig= ", os); 
      return os;
    }

    return OCTETSTRING();
  }

  /**
   * \fn BOOLEAN fx__verifyWithEcdsaNistp256WithSha256(const OCTETSTRING& p__toBeVerifiedData, const OCTETSTRING& p__signature, const OCTETSTRING& p__ecdsaNistp256PublicKeyCompressed);
   * \brief Verify the signature of the specified data
   * \param[in] p__toBeVerifiedData The data to be verified
   * \param[in] p__certificateIssuer Certificate issuer
   * \param[in] p__signature The signature
   * \param[in] p__ecdsaNistp256PublicKeyCompressed The compressed public key (x coordinate only)
   * \return true on success, false otherwise
   */
  BOOLEAN fx__verifyWithEcdsaNistp256WithSha256(