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client auth flag for B33 address

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orignal 2019-09-06 11:02:19 -04:00
parent 2497c3d187
commit b7f17d4cb1
5 changed files with 43 additions and 22 deletions
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18
libi2pd/Blinding.cpp
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@ -124,8 +124,14 @@ namespace data
return publicKeyLength;
}
//----------------------------------------------------------
BlindedPublicKey::BlindedPublicKey (std::shared_ptr<const IdentityEx> identity)
const uint8_t B33_TWO_BYTES_SIGTYPE_FLAG = 0x01;
const uint8_t B33_PER_SECRET_FLAG = 0x02; // not used for now
const uint8_t B33_PER_CLIENT_AUTH_FLAG = 0x04;
BlindedPublicKey::BlindedPublicKey (std::shared_ptr<const IdentityEx> identity, bool clientAuth):
m_IsClientAuth (clientAuth)
{
if (!identity) return;
auto len = identity->GetSigningPublicKeyLen ();
@ -147,9 +153,9 @@ namespace data
uint32_t checksum = crc32 (0, addr + 3, l - 3);
// checksum is Little Endian
addr[0] ^= checksum; addr[1] ^= (checksum >> 8); addr[2] ^= (checksum >> 16);
uint8_t flag = addr[0];
uint8_t flags = addr[0];
size_t offset = 1;
if (flag & 0x01) // two bytes signatures
if (flags & B33_TWO_BYTES_SIGTYPE_FLAG) // two bytes signatures
{
m_SigType = bufbe16toh (addr + offset); offset += 2;
m_BlindedSigType = bufbe16toh (addr + offset); offset += 2;
@ -159,6 +165,8 @@ namespace data
m_SigType = addr[offset]; offset++;
m_BlindedSigType = addr[offset]; offset++;
}
m_IsClientAuth = flags & B33_PER_CLIENT_AUTH_FLAG;
std::unique_ptr<i2p::crypto::Verifier> blindedVerifier (i2p::data::IdentityEx::CreateVerifier (m_SigType));
if (blindedVerifier)
{
@ -179,7 +187,9 @@ namespace data
{
if (m_PublicKey.size () > 32) return ""; // assume 25519
uint8_t addr[35]; char str[60]; // TODO: define actual length
addr[0] = 0; // flags
uint8_t flags = 0;
if (m_IsClientAuth) flags |= B33_PER_CLIENT_AUTH_FLAG;
addr[0] = flags; // flags
addr[1] = m_SigType; // sig type
addr[2] = m_BlindedSigType; // blinded sig type
memcpy (addr + 3, m_PublicKey.data (), m_PublicKey.size ());