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signature size for LeaseSet

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orignal 2014-08-23 08:41:06 -04:00
parent 2bc1ba1a9c
commit 8b81ba8d45
4 changed files with 25 additions and 29 deletions
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33
Identity.cpp
View file

@ -61,9 +61,6 @@ namespace data
memcpy (&m_StandardIdentity, &other.m_StandardIdentity, DEFAULT_IDENTITY_SIZE);
m_IdentHash = other.m_IdentHash;
delete m_Verifier;
m_Verifier = nullptr;
delete[] m_ExtendedBuffer;
m_ExtendedLen = other.m_ExtendedLen;
if (m_ExtendedLen > 0)
@ -73,7 +70,10 @@ namespace data
}
else
m_ExtendedBuffer = nullptr;
delete m_Verifier;
CreateVerifier ();
return *this;
}
@ -82,22 +82,21 @@ namespace data
m_StandardIdentity = standard;
m_IdentHash = m_StandardIdentity.Hash ();
delete m_Verifier;
m_Verifier = nullptr;
delete[] m_ExtendedBuffer;
m_ExtendedBuffer = nullptr;
m_ExtendedLen = 0;
delete m_Verifier;
CreateVerifier ();
return *this;
}
size_t IdentityEx::FromBuffer (const uint8_t * buf, size_t len)
{
delete m_Verifier;
m_Verifier = nullptr;
delete[] m_ExtendedBuffer;
memcpy (&m_StandardIdentity, buf, DEFAULT_IDENTITY_SIZE);
delete[] m_ExtendedBuffer;
if (m_StandardIdentity.certificate.length)
{
m_ExtendedLen = be16toh (m_StandardIdentity.certificate.length);
@ -110,6 +109,10 @@ namespace data
m_ExtendedBuffer = nullptr;
}
CryptoPP::SHA256().CalculateDigest(m_IdentHash, buf, GetFullLen ());
delete m_Verifier;
CreateVerifier ();
return GetFullLen ();
}
@ -123,8 +126,6 @@ namespace data
size_t IdentityEx::GetSigningPublicKeyLen () const
{
if (!m_Verifier)
CreateVerifier ();
if (m_Verifier)
return m_Verifier->GetPublicKeyLen ();
return 128;
@ -132,22 +133,18 @@ namespace data
size_t IdentityEx::GetSignatureLen () const
{
if (!m_Verifier)
CreateVerifier ();
if (m_Verifier)
return m_Verifier->GetSignatureLen ();
return 40;
}
bool IdentityEx::Verify (const uint8_t * buf, size_t len, const uint8_t * signature)
bool IdentityEx::Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
if (!m_Verifier)
CreateVerifier ();
if (m_Verifier)
return m_Verifier->Verify (buf, len, signature);
return false;
}
void IdentityEx::CreateVerifier () const
void IdentityEx::CreateVerifier ()
{
switch (m_StandardIdentity.certificate.type)
{

6
Identity.h
View file

@ -118,17 +118,17 @@ namespace data
size_t GetFullLen () const { return m_ExtendedLen + DEFAULT_IDENTITY_SIZE; };
size_t GetSigningPublicKeyLen () const;
size_t GetSignatureLen () const;
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature);
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const;
private:
void CreateVerifier () const;
void CreateVerifier ();
private:
Identity m_StandardIdentity;
IdentHash m_IdentHash;
mutable i2p::crypto::Verifier * m_Verifier;
i2p::crypto::Verifier * m_Verifier;
size_t m_ExtendedLen;
uint8_t * m_ExtendedBuffer;
};

3
LeaseSet.cpp
View file

@ -46,9 +46,8 @@ namespace data
m_BufferLen += sizeof (Lease);
}
// signature
// TODO: signer
localDestination.Sign (m_Buffer, m_BufferLen, m_Buffer + m_BufferLen);
m_BufferLen += 40; // TODO:
m_BufferLen += localDestination.GetIdentity ().GetSignatureLen ();
LogPrint ("Local LeaseSet of ", tunnels.size (), " leases created");
ReadFromBuffer ();

12
Signature.h
View file

@ -18,7 +18,7 @@ namespace crypto
public:
virtual ~Verifier () {};
virtual bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) = 0;
virtual bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const = 0;
virtual size_t GetPublicKeyLen () const = 0;
virtual size_t GetSignatureLen () const = 0;
};
@ -28,7 +28,7 @@ namespace crypto
public:
virtual ~Signer () {};
virtual void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature) = 0;
virtual void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature) const = 0;
};
class DSAVerifier: public Verifier
@ -40,7 +40,7 @@ namespace crypto
m_PublicKey.Initialize (dsap, dsaq, dsag, CryptoPP::Integer (signingKey, 128));
}
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature)
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
CryptoPP::DSA::Verifier verifier (m_PublicKey);
return verifier.VerifyMessage (buf, len, signature, 40);
@ -63,7 +63,7 @@ namespace crypto
m_PrivateKey.Initialize (dsap, dsaq, dsag, CryptoPP::Integer (signingPrivateKey, 20));
}
void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature)
void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature) const
{
CryptoPP::DSA::Signer signer (m_PrivateKey);
signer.SignMessage (rnd, buf, len, signature);
@ -95,7 +95,7 @@ namespace crypto
CryptoPP::Integer (signingKey + 32, 32)));
}
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature)
bool Verify (const uint8_t * buf, size_t len, const uint8_t * signature) const
{
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::Verifier verifier (m_PublicKey);
return verifier.VerifyMessage (buf, len, signature, 64);
@ -118,7 +118,7 @@ namespace crypto
m_PrivateKey.Initialize (CryptoPP::ASN1::secp256r1(), CryptoPP::Integer (signingPrivateKey, 32));
}
void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature)
void Sign (CryptoPP::RandomNumberGenerator& rnd, const uint8_t * buf, int len, uint8_t * signature) const
{
CryptoPP::ECDSA<CryptoPP::ECP, CryptoPP::SHA256>::Signer signer (m_PrivateKey);
signer.SignMessage (rnd, buf, len, signature);