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verify blinding key for encrypted LS2

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orignal 2019-03-07 11:55:47 -05:00
parent 24c5ed1cff
commit 557244bc3f
5 changed files with 42 additions and 14 deletions
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23
libi2pd/LeaseSet.cpp
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@ -466,6 +466,19 @@ namespace data
if (verified && identity && lenOuterCiphertext >= 32)
{
SetIsValid (false); // we must verify it again in Layer 2
if (blindedKeyType == i2p::data::SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519)
{
// verify blinding
char date[9];
i2p::util::GetCurrentDate (date);
uint8_t blinded[32];
BlindPublicKey (identity, date, blindedKeyType, blinded);
if (memcmp (blindedPublicKey, blinded, 32))
{
LogPrint (eLogError, "LeaseSet2: blinded public key doesn't match");
return;
}
}
// credentials
uint8_t credential[32], subcredential[36];
// A = destination's signing public key
@ -543,8 +556,16 @@ namespace data
i2p::crypto::GetEd25519 ()->BlindPublicKey (identity->GetSigningPublicKeyBuffer (), seed, blindedKey);
}
void LeaseSet2::CalculateStoreHash (std::shared_ptr<const IdentityEx> identity, const char * date, SigningKeyType blindedKeyType, i2p::data::IdentHash& hash)
void LeaseSet2::CalculateStoreHash (std::shared_ptr<const IdentityEx> identity, SigningKeyType blindedKeyType, i2p::data::IdentHash& hash)
{
if (blindedKeyType != i2p::data::SIGNING_KEY_TYPE_REDDSA_SHA512_ED25519 &&
blindedKeyType != SIGNING_KEY_TYPE_EDDSA_SHA512_ED25519)
{
LogPrint (eLogError, "LeaseSet2: blinded key type ", (int)blindedKeyType, " is not supported");
return;
}
char date[9];
i2p::util::GetCurrentDate (date);
uint8_t blinded[32];
BlindPublicKey (identity, date, blindedKeyType, blinded);
auto stA1 = htobe16 (blindedKeyType);