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support multiple encryption keys through the I2CP

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orignal 2020-06-03 16:05:19 -04:00
parent 9135772f89
commit e135696530
6 changed files with 46 additions and 23 deletions
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9
libi2pd/Crypto.cpp
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@ -375,15 +375,22 @@ namespace crypto
#endif
}
void X25519Keys::SetPrivateKey (const uint8_t * priv)
void X25519Keys::SetPrivateKey (const uint8_t * priv, bool calculatePublic)
{
#if OPENSSL_X25519
if (m_Ctx) EVP_PKEY_CTX_free (m_Ctx);
if (m_Pkey) EVP_PKEY_free (m_Pkey);
m_Pkey = EVP_PKEY_new_raw_private_key (EVP_PKEY_X25519, NULL, priv, 32);
m_Ctx = EVP_PKEY_CTX_new (m_Pkey, NULL);
if (calculatePublic)
{
size_t len = 32;
EVP_PKEY_get_raw_public_key (m_Pkey, m_PublicKey, &len);
}
#else
memcpy (m_PrivateKey, priv, 32);
if (calculatePublic)
GetEd25519 ()->ScalarMulB (m_PrivateKey, m_PublicKey, m_Ctx);
#endif
}

2
libi2pd/Crypto.h
View file

@ -88,7 +88,7 @@ namespace crypto
void GenerateKeys ();
const uint8_t * GetPublicKey () const { return m_PublicKey; };
void GetPrivateKey (uint8_t * priv) const;
void SetPrivateKey (const uint8_t * priv); // wihout calculating public
void SetPrivateKey (const uint8_t * priv, bool calculatePublic = false);
void Agree (const uint8_t * pub, uint8_t * shared);
private:

2
libi2pd/CryptoKey.cpp
View file

@ -166,7 +166,7 @@ namespace crypto
memcpy (pub, m_PublicKey, 32);
}
ECIESX25519AEADRatchetDecryptor::ECIESX25519AEADRatchetDecryptor (const uint8_t * priv)
ECIESX25519AEADRatchetDecryptor::ECIESX25519AEADRatchetDecryptor (const uint8_t * priv, bool calculatePublic)
{
m_StaticKeys.SetPrivateKey (priv);
}

3
libi2pd/CryptoKey.h
View file

@ -145,11 +145,12 @@ namespace crypto
{
public:
ECIESX25519AEADRatchetDecryptor (const uint8_t * priv);
ECIESX25519AEADRatchetDecryptor (const uint8_t * priv, bool calculatePublic = false);
~ECIESX25519AEADRatchetDecryptor () {};
bool Decrypt (const uint8_t * epub, uint8_t * sharedSecret, BN_CTX * ctx, bool zeroPadding);
// agree with static and return in sharedSecret (32 bytes)
size_t GetPublicKeyLen () const { return 32; };
const uint8_t * GetPubicKey () const { return m_StaticKeys.GetPublicKey (); };
private: