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/*
Copyright (c) 2008 TrueCrypt Developers Association. All rights reserved.
Governed by the TrueCrypt License 3.0 the full text of which is contained in
the file License.txt included in TrueCrypt binary and source code distribution
packages.
*/
#include "Hash.h"
#include "Crypto/Rmd160.h"
#include "Crypto/Sha2.h"
#include "Crypto/Whirlpool.h"
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 ()));
return l;
}
void Hash::ValidateDataParameters (const ConstBufferPtr &data) const
{
if (data.Size() < 1)
throw ParameterIncorrect (SRC_POS);
}
void Hash::ValidateDigestParameters (const BufferPtr &buffer) const
{
if (buffer.Size() != GetDigestSize ())
throw ParameterIncorrect (SRC_POS);
}
// RIPEMD-160
Ripemd160::Ripemd160 ()
{
Context.Allocate (sizeof (RMD160_CTX));
Init();
}
void Ripemd160::GetDigest (const BufferPtr &buffer)
{
if_debug (ValidateDigestParameters (buffer));
RMD160Final (buffer, (RMD160_CTX *) Context.Ptr());
}
void Ripemd160::Init ()
{
RMD160Init ((RMD160_CTX *) Context.Ptr());
}
void Ripemd160::ProcessData (const ConstBufferPtr &data)
{
if_debug (ValidateDataParameters (data));
RMD160Update ((RMD160_CTX *) Context.Ptr(), data.Get(), (int) data.Size());
}
// SHA-512
Sha512::Sha512 ()
{
Context.Allocate (sizeof (sha512_ctx));
Init();
}
void Sha512::GetDigest (const BufferPtr &buffer)
{
if_debug (ValidateDigestParameters (buffer));
sha512_end (buffer, (sha512_ctx *) Context.Ptr());
}
void Sha512::Init ()
{
sha512_begin ((sha512_ctx *) Context.Ptr());
}
void Sha512::ProcessData (const ConstBufferPtr &data)
{
if_debug (ValidateDataParameters (data));
sha512_hash (data.Get(), (int) data.Size(), (sha512_ctx *) Context.Ptr());
}
// Whirlpool
Whirlpool::Whirlpool ()
{
Context.Allocate (sizeof (WHIRLPOOL_CTX));
Init();
}
void Whirlpool::GetDigest (const BufferPtr &buffer)
{
if_debug (ValidateDigestParameters (buffer));
WHIRLPOOL_finalize ((WHIRLPOOL_CTX *) Context.Ptr(), buffer);
}
void Whirlpool::Init ()
{
WHIRLPOOL_init ((WHIRLPOOL_CTX *) Context.Ptr());
}
void Whirlpool::ProcessData (const ConstBufferPtr &data)
{
if_debug (ValidateDataParameters (data));
WHIRLPOOL_add (data.Get(), (int) data.Size() * 8, (WHIRLPOOL_CTX *) Context.Ptr());
}
}
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