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Use in-class initialization in md5_128

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This commit is contained in:
Peter Dimov
2024-10-27 20:53:30 +02:00
parent d4fac8fa32
commit 956ed86bb9
1 changed files with 26 additions and 41 deletions
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67
include/boost/hash2/md5.hpp
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@@ -27,14 +27,14 @@ class md5_128
{
private:
std::uint32_t state_[ 4 ];
std::uint32_t state_[ 4 ] = { 0x67452301u, 0xefcdab89u, 0x98badcfeu, 0x10325476u };
static const int N = 64;
static constexpr int N = 64;
unsigned char buffer_[ N ];
std::size_t m_; // == n_ % N
unsigned char buffer_[ N ] = {};
std::size_t m_ = 0; // == n_ % N
std::uint64_t n_;
std::uint64_t n_ = 0;
private:
@@ -86,30 +86,22 @@ private:
a += b;
}
void init()
{
state_[ 0 ] = 0x67452301u;
state_[ 1 ] = 0xefcdab89u;
state_[ 2 ] = 0x98badcfeu;
state_[ 3 ] = 0x10325476u;
}
static const int S11 = 7;
static const int S12 = 12;
static const int S13 = 17;
static const int S14 = 22;
static const int S21 = 5;
static const int S22 = 9;
static const int S23 = 14;
static const int S24 = 20;
static const int S31 = 4;
static const int S32 = 11;
static const int S33 = 16;
static const int S34 = 23;
static const int S41 = 6;
static const int S42 = 10;
static const int S43 = 15;
static const int S44 = 21;
static constexpr int S11 = 7;
static constexpr int S12 = 12;
static constexpr int S13 = 17;
static constexpr int S14 = 22;
static constexpr int S21 = 5;
static constexpr int S22 = 9;
static constexpr int S23 = 14;
static constexpr int S24 = 20;
static constexpr int S31 = 4;
static constexpr int S32 = 11;
static constexpr int S33 = 16;
static constexpr int S34 = 23;
static constexpr int S41 = 6;
static constexpr int S42 = 10;
static constexpr int S43 = 15;
static constexpr int S44 = 21;
void transform( unsigned char const block[ 64 ] )
{
@@ -204,17 +196,12 @@ public:
typedef std::array<unsigned char, 16> result_type;
typedef std::uint64_t size_type;
static const int block_size = 64;
static constexpr int block_size = 64;
md5_128(): m_( 0 ), n_( 0 )
md5_128() = default;
explicit md5_128( std::uint64_t seed )
{
init();
}
explicit md5_128( std::uint64_t seed ): m_( 0 ), n_( 0 )
{
init();
if( seed != 0 )
{
unsigned char tmp[ 8 ];
@@ -225,10 +212,8 @@ public:
}
}
md5_128( unsigned char const * p, std::size_t n ): m_( 0 ), n_( 0 )
md5_128( unsigned char const * p, std::size_t n )
{
init();
if( n != 0 )
{
update( p, n );