CryptoDigestOpenSSL.cpp [plain text]
#include "config.h"
#include "CryptoDigest.h"
#include <openssl/sha.h>
namespace {
struct SHA1Functions {
static constexpr auto init = SHA1_Init;
static constexpr auto update = SHA1_Update;
static constexpr auto final = SHA1_Final;
static constexpr size_t digestLength = SHA_DIGEST_LENGTH;
};
struct SHA224Functions {
static constexpr auto init = SHA224_Init;
static constexpr auto update = SHA224_Update;
static constexpr auto final = SHA224_Final;
static constexpr size_t digestLength = SHA224_DIGEST_LENGTH;
};
struct SHA256Functions {
static constexpr auto init = SHA256_Init;
static constexpr auto update = SHA256_Update;
static constexpr auto final = SHA256_Final;
static constexpr size_t digestLength = SHA256_DIGEST_LENGTH;
};
struct SHA384Functions {
static constexpr auto init = SHA384_Init;
static constexpr auto update = SHA384_Update;
static constexpr auto final = SHA384_Final;
static constexpr size_t digestLength = SHA384_DIGEST_LENGTH;
};
struct SHA512Functions {
static constexpr auto init = SHA512_Init;
static constexpr auto update = SHA512_Update;
static constexpr auto final = SHA512_Final;
static constexpr size_t digestLength = SHA512_DIGEST_LENGTH;
};
}
namespace PAL {
struct CryptoDigestContext {
virtual ~CryptoDigestContext() = default;
virtual void addBytes(const void* input, size_t length) = 0;
virtual Vector<uint8_t> computeHash() = 0;
};
template <typename SHAContext, typename SHAFunctions>
struct CryptoDigestContextImpl : public CryptoDigestContext {
WTF_MAKE_STRUCT_FAST_ALLOCATED;
static std::unique_ptr<CryptoDigestContext> create()
{
return makeUnique<CryptoDigestContextImpl>();
}
CryptoDigestContextImpl()
{
SHAFunctions::init(&m_context);
}
void addBytes(const void* input, size_t length) override
{
SHAFunctions::update(&m_context, input, length);
}
Vector<uint8_t> computeHash() override
{
Vector<uint8_t> result(SHAFunctions::digestLength);
SHAFunctions::final(result.data(), &m_context);
return result;
}
private:
SHAContext m_context;
};
CryptoDigest::CryptoDigest()
{
}
CryptoDigest::~CryptoDigest()
{
}
std::unique_ptr<CryptoDigest> CryptoDigest::create(CryptoDigest::Algorithm algorithm)
{
std::unique_ptr<CryptoDigest> digest(new CryptoDigest);
switch (algorithm) {
case CryptoDigest::Algorithm::SHA_1:
digest->m_context = CryptoDigestContextImpl<SHA_CTX, SHA1Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_224:
digest->m_context = CryptoDigestContextImpl<SHA256_CTX, SHA224Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_256:
digest->m_context = CryptoDigestContextImpl<SHA256_CTX, SHA256Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_384:
digest->m_context = CryptoDigestContextImpl<SHA512_CTX, SHA384Functions>::create();
return digest;
case CryptoDigest::Algorithm::SHA_512:
digest->m_context = CryptoDigestContextImpl<SHA512_CTX, SHA512Functions>::create();
return digest;
}
return nullptr;
}
void CryptoDigest::addBytes(const void* input, size_t length)
{
ASSERT(m_context);
m_context->addBytes(input, length);
}
Vector<uint8_t> CryptoDigest::computeHash()
{
ASSERT(m_context);
return m_context->computeHash();
}
}