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separate X25519Keys

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This commit is contained in:
orignal 2018-09-08 16:52:42 -04:00
parent 50399e5194
commit 1babd3a5a2
4 changed files with 101 additions and 49 deletions
libi2pd
Crypto.h

50
libi2pd/Crypto.h
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@ -13,11 +13,23 @@
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/engine.h>
#include <openssl/opensslv.h>
#include "Base.h"
#include "Tag.h"
#include "CPU.h"
// recognize openssl version and features
#if ((OPENSSL_VERSION_NUMBER < 0x010100000) || defined(LIBRESSL_VERSION_NUMBER)) // 1.0.2 and below or LibreSSL
# define LEGACY_OPENSSL 1
#else
# define LEGACY_OPENSSL 0
# if (OPENSSL_VERSION_NUMBER >= 0x010101000) // 1.1.1
# define OPENSSL_EDDSA 1
# define OPENSSL_X25519 1
# endif
#endif
namespace i2p
{
namespace crypto
@ -48,6 +60,31 @@ namespace crypto
uint8_t m_PublicKey[256];
};
// x25519
class X25519Keys
{
public:
X25519Keys ();
~X25519Keys ();
void GenerateKeys ();
const uint8_t * GetPublicKey () const { return m_PublicKey; };
const uint8_t * GetPrivateKey () const { return m_PrivateKey; }; // TODO: remove
void Agree (const uint8_t * pub, uint8_t * shared);
private:
uint8_t m_PublicKey[32];
uint8_t m_PrivateKey[32]; // TODO: move to #else
#if OPENSSL_X25519
EVP_PKEY_CTX * m_Ctx;
EVP_PKEY * m_Pkey;
#else
BN_CTX * m_Ctx;
#endif
};
// ElGamal
void ElGamalEncrypt (const uint8_t * key, const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding = false);
bool ElGamalDecrypt (const uint8_t * key, const uint8_t * encrypted, uint8_t * data, BN_CTX * ctx, bool zeroPadding = false);
@ -260,18 +297,7 @@ namespace crypto
}
}
// take care about openssl version
#include <openssl/opensslv.h>
#if ((OPENSSL_VERSION_NUMBER < 0x010100000) || defined(LIBRESSL_VERSION_NUMBER)) // 1.0.2 and below or LibreSSL
# define LEGACY_OPENSSL 1
#else
# define LEGACY_OPENSSL 0
# if (OPENSSL_VERSION_NUMBER >= 0x010101000) // 1.1.1
# define OPENSSL_EDDSA 1
# define OPENSSL_X25519 1
# endif
#endif
// take care about openssl below 1.1.0
#if LEGACY_OPENSSL
// define getters and setters introduced in 1.1.0
inline int DSA_set0_pqg(DSA *d, BIGNUM *p, BIGNUM *q, BIGNUM *g)