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Integrate SHA-256 support into Linux/MacOSX code. Set PRF priority to SHA-512 -> Whirlpool -> SHA-256 -> RIPEMD-160 .

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This commit is contained in:
Mounir IDRASSI 2014-10-14 21:19:53 +02:00
parent 905a3ff4a5
commit f05f6a00a6
5 changed files with 97 additions and 5 deletions
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29
src/Volume/Hash.cpp
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@ -17,10 +17,11 @@ namespace VeraCrypt
HashList Hash::GetAvailableAlgorithms ()
{
HashList l;
l.push_back (shared_ptr <Hash> (new Ripemd160 ()));
l.push_back (shared_ptr <Hash> (new Sha512 ()));
l.push_back (shared_ptr <Hash> (new Whirlpool ()));
l.push_back (shared_ptr <Hash> (new Sha256 ()));
l.push_back (shared_ptr <Hash> (new Ripemd160 ()));
return l;
}
@ -60,6 +61,30 @@ namespace VeraCrypt
if_debug (ValidateDataParameters (data));
RMD160Update ((RMD160_CTX *) Context.Ptr(), data.Get(), (int) data.Size());
}
// SHA-256
Sha256::Sha256 ()
{
Context.Allocate (sizeof (sha256_ctx));
Init();
}
void Sha256::GetDigest (const BufferPtr &buffer)
{
if_debug (ValidateDigestParameters (buffer));
sha256_end (buffer, (sha256_ctx *) Context.Ptr());
}
void Sha256::Init ()
{
sha256_begin ((sha256_ctx *) Context.Ptr());
}
void Sha256::ProcessData (const ConstBufferPtr &data)
{
if_debug (ValidateDataParameters (data));
sha256_hash (data.Get(), (int) data.Size(), (sha256_ctx *) Context.Ptr());
}
// SHA-512
Sha512::Sha512 ()

22
src/Volume/Hash.h
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@ -64,6 +64,28 @@ namespace VeraCrypt
Ripemd160 (const Ripemd160 &);
Ripemd160 &operator= (const Ripemd160 &);
};
// SHA-256
class Sha256 : public Hash
{
public:
Sha256 ();
virtual ~Sha256 () { }
virtual void GetDigest (const BufferPtr &buffer);
virtual size_t GetBlockSize () const { return 64; }
virtual size_t GetDigestSize () const { return 256 / 8; }
virtual wstring GetName () const { return L"SHA-256"; }
virtual shared_ptr <Hash> GetNew () const { return shared_ptr <Hash> (new Sha256); }
virtual void Init ();
virtual void ProcessData (const ConstBufferPtr &data);
protected:
private:
Sha256 (const Sha256 &);
Sha256 &operator= (const Sha256 &);
};
// SHA-512
class Sha512 : public Hash

17
src/Volume/Pkcs5Kdf.cpp
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@ -49,10 +49,11 @@ namespace VeraCrypt
Pkcs5KdfList Pkcs5Kdf::GetAvailableAlgorithms ()
{
Pkcs5KdfList l;
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacRipemd160 ()));
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacSha512 ()));
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacWhirlpool ()));
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacSha256 ()));
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacRipemd160 ()));
return l;
}
@ -74,6 +75,18 @@ namespace VeraCrypt
ValidateParameters (key, password, salt, iterationCount);
derive_key_ripemd160 (bNotTest, (char *) password.DataPtr(), (int) password.Size(), (char *) salt.Get(), (int) salt.Size(), iterationCount, (char *) key.Get(), (int) key.Size());
}
void Pkcs5HmacSha256_Boot::DeriveKey (const BufferPtr &key, const VolumePassword &password, const ConstBufferPtr &salt, int iterationCount, BOOL bNotTest) const
{
ValidateParameters (key, password, salt, iterationCount);
derive_key_sha256 ((char *) password.DataPtr(), (int) password.Size(), (char *) salt.Get(), (int) salt.Size(), iterationCount, (char *) key.Get(), (int) key.Size());
}
void Pkcs5HmacSha256::DeriveKey (const BufferPtr &key, const VolumePassword &password, const ConstBufferPtr &salt, int iterationCount, BOOL bNotTest) const
{
ValidateParameters (key, password, salt, iterationCount);
derive_key_sha256 ((char *) password.DataPtr(), (int) password.Size(), (char *) salt.Get(), (int) salt.Size(), iterationCount, (char *) key.Get(), (int) key.Size());
}
void Pkcs5HmacSha512::DeriveKey (const BufferPtr &key, const VolumePassword &password, const ConstBufferPtr &salt, int iterationCount, BOOL bNotTest) const
{

31
src/Volume/Pkcs5Kdf.h
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@ -74,7 +74,38 @@ namespace VeraCrypt
Pkcs5HmacRipemd160_1000 (const Pkcs5HmacRipemd160_1000 &);
Pkcs5HmacRipemd160_1000 &operator= (const Pkcs5HmacRipemd160_1000 &);
};
class Pkcs5HmacSha256_Boot : public Pkcs5Kdf
{
public:
Pkcs5HmacSha256_Boot () { }
virtual ~Pkcs5HmacSha256_Boot () { }
virtual void DeriveKey (const BufferPtr &key, const VolumePassword &password, const ConstBufferPtr &salt, int iterationCount, BOOL bNotTest = TRUE) const;
virtual shared_ptr <Hash> GetHash () const { return shared_ptr <Hash> (new Sha256); }
virtual int GetIterationCount () const { return 200000; }
virtual wstring GetName () const { return L"HMAC-SHA-256"; }
private:
Pkcs5HmacSha256_Boot (const Pkcs5HmacSha256_Boot &);
Pkcs5HmacSha256_Boot &operator= (const Pkcs5HmacSha256_Boot &);
};
class Pkcs5HmacSha256 : public Pkcs5Kdf
{
public:
Pkcs5HmacSha256 () { }
virtual ~Pkcs5HmacSha256 () { }
virtual void DeriveKey (const BufferPtr &key, const VolumePassword &password, const ConstBufferPtr &salt, int iterationCount, BOOL bNotTest = TRUE) const;
virtual shared_ptr <Hash> GetHash () const { return shared_ptr <Hash> (new Sha256); }
virtual int GetIterationCount () const { return 500000; }
virtual wstring GetName () const { return L"HMAC-SHA-256"; }
private:
Pkcs5HmacSha256 (const Pkcs5HmacSha256 &);
Pkcs5HmacSha256 &operator= (const Pkcs5HmacSha256 &);
};
class Pkcs5HmacSha512 : public Pkcs5Kdf
{

3
src/Volume/VolumeLayout.cpp
View File

@ -229,7 +229,8 @@ namespace VeraCrypt
Pkcs5KdfList VolumeLayoutSystemEncryption::GetSupportedKeyDerivationFunctions () const
{
Pkcs5KdfList l;
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacSha256_Boot ()));
l.push_back (shared_ptr <Pkcs5Kdf> (new Pkcs5HmacRipemd160_1000 ()));
return l;
}