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Code Issues Releases Activity

missed self assigment check for EDDSAPoint

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This commit is contained in:
brain5lug 2017-09-29 00:48:14 +03:00
parent 8c8127dda6
commit 8e3c9410dc
1 changed files with 29 additions and 17 deletions
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46
libi2pd/Signature.h
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@ -363,31 +363,43 @@ namespace crypto
// EdDSA
struct EDDSAPoint
{
BIGNUM * x, * y;
BIGNUM * z, * t; // projective coordinates
EDDSAPoint (): x(nullptr), y(nullptr), z(nullptr), t(nullptr) {};
EDDSAPoint (const EDDSAPoint& other): x(nullptr), y(nullptr), z(nullptr), t(nullptr)
{ *this = other; };
EDDSAPoint (EDDSAPoint&& other): x(nullptr), y(nullptr), z(nullptr), t(nullptr)
{ *this = std::move (other); };
EDDSAPoint (BIGNUM * x1, BIGNUM * y1, BIGNUM * z1 = nullptr, BIGNUM * t1 = nullptr): x(x1), y(y1), z(z1), t(t1) {};
~EDDSAPoint () { BN_free (x); BN_free (y); BN_free(z); BN_free(t); };
BIGNUM * x {nullptr};
BIGNUM * y {nullptr};
BIGNUM * z {nullptr};
BIGNUM * t {nullptr}; // projective coordinates
EDDSAPoint () {}
EDDSAPoint (const EDDSAPoint& other) { *this = other; }
EDDSAPoint (EDDSAPoint&& other) { *this = std::move (other); }
EDDSAPoint (BIGNUM * x1, BIGNUM * y1, BIGNUM * z1 = nullptr, BIGNUM * t1 = nullptr)
: x(x1)
, y(y1)
, z(z1)
, t(t1)
{}
~EDDSAPoint () { BN_free (x); BN_free (y); BN_free(z); BN_free(t); }
EDDSAPoint& operator=(EDDSAPoint&& other)
{
if (x) BN_free (x); x = other.x; other.x = nullptr;
if (y) BN_free (y); y = other.y; other.y = nullptr;
if (z) BN_free (z); z = other.z; other.z = nullptr;
if (t) BN_free (t); t = other.t; other.t = nullptr;
if (this != &other)
{
BN_free (x); x = other.x; other.x = nullptr;
BN_free (y); y = other.y; other.y = nullptr;
BN_free (z); z = other.z; other.z = nullptr;
BN_free (t); t = other.t; other.t = nullptr;
}
return *this;
}
EDDSAPoint& operator=(const EDDSAPoint& other)
{
if (x) BN_free (x); x = other.x ? BN_dup (other.x) : nullptr;
if (y) BN_free (y); y = other.y ? BN_dup (other.y) : nullptr;
if (z) BN_free (z); z = other.z ? BN_dup (other.z) : nullptr;
if (t) BN_free (t); t = other.t ? BN_dup (other.t) : nullptr;
if (this != &other)
{
BN_free (x); x = other.x ? BN_dup (other.x) : nullptr;
BN_free (y); y = other.y ? BN_dup (other.y) : nullptr;
BN_free (z); z = other.z ? BN_dup (other.z) : nullptr;
BN_free (t); t = other.t ? BN_dup (other.t) : nullptr;
}
return *this;
}