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create new static keys by X25519Keys

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orignal 2018-11-01 10:43:31 -04:00
parent df3da8be7a
commit 34cfd205f6
3 changed files with 15 additions and 4 deletions
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10
libi2pd/Crypto.cpp
View File

@ -341,6 +341,16 @@ namespace crypto
#endif
}
void X25519Keys::GetPrivateKey (uint8_t * priv) const
{
#if OPENSSL_X25519
size_t len = 32;
EVP_PKEY_get_raw_private_key (m_Pkey, priv, &len);
#else
memcpy (priv, m_PrivateKey, 32);
#endif
}
// ElGamal
void ElGamalEncrypt (const uint8_t * key, const uint8_t * data, uint8_t * encrypted, BN_CTX * ctx, bool zeroPadding)
{

1
libi2pd/Crypto.h
View File

@ -72,6 +72,7 @@ namespace crypto
void GenerateKeys ();
const uint8_t * GetPublicKey () const { return m_PublicKey; };
void GetPrivateKey (uint8_t * priv) const;
void Agree (const uint8_t * pub, uint8_t * shared);
private:

8
libi2pd/RouterContext.cpp
View File

@ -116,12 +116,12 @@ namespace i2p
void RouterContext::NewNTCP2Keys ()
{
m_StaticKeys.reset (new i2p::crypto::X25519Keys ());
m_StaticKeys->GenerateKeys ();
m_NTCP2Keys.reset (new NTCP2PrivateKeys ());
RAND_bytes (m_NTCP2Keys->staticPrivateKey, 32);
m_StaticKeys->GetPrivateKey (m_NTCP2Keys->staticPrivateKey);
memcpy (m_NTCP2Keys->staticPublicKey, m_StaticKeys->GetPublicKey (), 32);
RAND_bytes (m_NTCP2Keys->iv, 16);
BN_CTX * ctx = BN_CTX_new ();
i2p::crypto::GetEd25519 ()->ScalarMulB (m_NTCP2Keys->staticPrivateKey, m_NTCP2Keys->staticPublicKey, ctx);
BN_CTX_free (ctx);
// save
std::ofstream fk (i2p::fs::DataDirPath (NTCP2_KEYS), std::ofstream::binary | std::ofstream::out);
fk.write ((char *)m_NTCP2Keys.get (), sizeof (NTCP2PrivateKeys));