Charon/blockchain
1
0
Fork 0
forked from lthn/blockchain
Code Pull requests Activity

experimental crypto: scalar_t & point_t improvements

Browse source
This commit is contained in:
sowle 2021-01-11 23:56:43 +03:00
parent 515a089a46
commit 7f5e519277
No known key found for this signature in database
GPG key ID: C07A24B2D89D49FC
1 changed files with 41 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

45
tests/functional_tests/crypto_tests.cpp
View file

@ -189,6 +189,7 @@ struct scalar_t
scalar_t()
{}
// won't check scalar range validity (< L)
scalar_t(uint64_t a0, uint64_t a1, uint64_t a2, uint64_t a3)
{
m_u64[0] = a0;
@ -197,6 +198,22 @@ struct scalar_t
m_u64[3] = a3;
}
// won't check secret key validity (sk < L)
scalar_t(const crypto::secret_key& sk)
{
from_secret_key(sk);
}
// copy data and reduce
scalar_t(const crypto::hash& hash)
{
m_u64[0] = ((uint64_t*)&hash)[0];
m_u64[1] = ((uint64_t*)&hash)[1];
m_u64[2] = ((uint64_t*)&hash)[2];
m_u64[3] = ((uint64_t*)&hash)[3];
sc_reduce32(&m_s[0]);
}
scalar_t(uint64_t v)
{
zero();
@ -216,6 +233,16 @@ struct scalar_t
return &m_s[0];
}
crypto::secret_key &as_secret_key()
{
return *(crypto::secret_key*)&m_s[0];
}
const crypto::secret_key& as_secret_key() const
{
return *(const crypto::secret_key*)&m_s[0];
}
operator crypto::secret_key() const
{
crypto::secret_key result;
@ -223,11 +250,14 @@ struct scalar_t
return result;
}
bool from_secret_key(const crypto::secret_key& sk)
void from_secret_key(const crypto::secret_key& sk)
{
// TODO
//fe_frombytes(m_fe, reinterpret_cast<const unsigned char*>(&sk));
return false;
uint64_t *p_sk64 = (uint64_t*)&sk;
m_u64[0] = p_sk64[0];
m_u64[1] = p_sk64[1];
m_u64[2] = p_sk64[2];
m_u64[3] = p_sk64[3];
// assuming secret key is correct (< L), so we don't need to call reduce here
}
void zero()
@ -459,6 +489,13 @@ struct point_t
return true;
};
friend std::ostream& operator<<(std::ostream& ss, const point_t &v)
{
crypto::public_key pk;
ge_p3_tobytes((unsigned char*)&pk, &v.m_p3);
return ss << epee::string_tools::pod_to_hex(pk);
}
}; // struct point_t
struct point_g_t : public point_t