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ECDSA for local destinations

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orignal 2014-08-24 10:36:59 -04:00
parent e45ee83746
commit 0e230fdd05
2 changed files with 16 additions and 10 deletions
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5
Identity.cpp
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@ -50,15 +50,18 @@ namespace data
m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
*(uint16_t *)m_ExtendedBuffer = htobe16 (SIGNING_KEY_TYPE_ECDSA_SHA256_P256);
*(uint16_t *)(m_ExtendedBuffer + 2) = htobe16 (CRYPTO_KEY_TYPE_ELGAMAL);
uint8_t buf[DEFAULT_IDENTITY_SIZE + 4];
ToBuffer (buf, DEFAULT_IDENTITY_SIZE + 4);
CryptoPP::SHA256().CalculateDigest(m_IdentHash, buf, GetFullLen ());
}
else // DSA-SHA1
{
memcpy (m_StandardIdentity.signingKey, signingKey, sizeof (m_StandardIdentity.signingKey));
memset (&m_StandardIdentity.certificate, 0, sizeof (m_StandardIdentity.certificate));
m_IdentHash = m_StandardIdentity.Hash ();
m_ExtendedLen = 0;
m_ExtendedBuffer = nullptr;
}
m_IdentHash = m_StandardIdentity.Hash ();
CreateVerifier ();
}

21
Streaming.cpp
View File

@ -261,15 +261,17 @@ namespace stream
if (isNoAck) flags |= PACKET_FLAG_NO_ACK;
*(uint16_t *)(packet + size) = htobe16 (flags);
size += 2; // flags
*(uint16_t *)(packet + size) = htobe16 (i2p::data::DEFAULT_IDENTITY_SIZE + 40 + 2); // identity + signature + packet size
size_t identityLen = m_LocalDestination->GetIdentity ().GetFullLen ();
size_t signatureLen = m_LocalDestination->GetIdentity ().GetSignatureLen ();
*(uint16_t *)(packet + size) = htobe16 (identityLen + signatureLen + 2); // identity + signature + packet size
size += 2; // options size
memcpy (packet + size, &m_LocalDestination->GetIdentity (), i2p::data::DEFAULT_IDENTITY_SIZE);
size += i2p::data::DEFAULT_IDENTITY_SIZE; // from
m_LocalDestination->GetIdentity ().ToBuffer (packet + size, identityLen);
size += identityLen; // from
*(uint16_t *)(packet + size) = htobe16 (STREAMING_MTU);
size += 2; // max packet size
uint8_t * signature = packet + size; // set it later
memset (signature, 0, 40); // zeroes for now
size += 40; // signature
memset (signature, 0, signatureLen); // zeroes for now
size += signatureLen; // signature
size_t sentLen = STREAMING_MTU - size;
if (len < sentLen) sentLen = len;
memcpy (packet + size, buf, sentLen);
@ -347,11 +349,12 @@ namespace stream
size++; // resend delay
*(uint16_t *)(packet + size) = htobe16 (PACKET_FLAG_CLOSE | PACKET_FLAG_SIGNATURE_INCLUDED);
size += 2; // flags
*(uint16_t *)(packet + size) = htobe16 (40); // 40 bytes signature
size_t signatureLen = m_LocalDestination->GetIdentity ().GetSignatureLen ();
*(uint16_t *)(packet + size) = htobe16 (signatureLen); // signature only
size += 2; // options size
uint8_t * signature = packet + size;
memset (packet + size, 0, 40);
size += 40; // signature
memset (packet + size, 0, signatureLen);
size += signatureLen; // signature
m_LocalDestination->Sign (packet, size, signature);
p->len = size;
@ -505,7 +508,7 @@ namespace stream
StreamingDestination::StreamingDestination (boost::asio::io_service& service):
m_Service (service), m_LeaseSet (nullptr), m_IsPublic (false)
{
m_Keys = i2p::data::PrivateKeys::CreateRandomKeys ();
m_Keys = i2p::data::PrivateKeys::CreateRandomKeys (/*i2p::data::SIGNING_KEY_TYPE_ECDSA_SHA256_P256*/); // uncomment for ECDSA
CryptoPP::DH dh (i2p::crypto::elgp, i2p::crypto::elgg);
dh.GenerateKeyPair(i2p::context.GetRandomNumberGenerator (), m_EncryptionPrivateKey, m_EncryptionPublicKey);
m_Pool = i2p::tunnel::tunnels.CreateTunnelPool (*this, 3); // 3-hops tunnel