public static Md5Hash Calculate(IEnumerable <byte> bytes)
{
var context = new MD5Context();
context.Initialize();
var list = new List <byte>(bufferSize);
using (var enumerator = bytes.GetEnumerator()) {
while (enumerator.MoveNext())
{
list.Add(enumerator.Current);
if (list.Count == bufferSize)
{
context.Update(list.ToArray());
list = new List <byte>(bufferSize);
}
}
if (list.Count > 0)
{
context.Update(list.ToArray());
}
}
context.Final();
return(context.ToMd5Hash());
}
/*
** During testing, the special md5sum() aggregate function is available.
** inside SQLite. The following routines implement that function.
*/
static void md5step(sqlite3_context context, int argc, sqlite3_value[] argv)
{
MD5Context p = null;
int i;
if (argc < 1)
{
return;
}
Mem pMem = sqlite3_aggregate_context(context, 1);//sizeof(*p));
if (pMem._MD5Context == null)
{
pMem._MD5Context = new MD5Context();
((MD5Context)pMem._MD5Context)._Mem = pMem;
}
p = (MD5Context)pMem._MD5Context;
if (p == null)
{
return;
}
if (!p.isInit)
{
MD5Init(p);
}
for (i = 0; i < argc; i++)
{
byte[] zData = sqlite3_value_text(argv[i]) == null ? null : Encoding.UTF8.GetBytes(sqlite3_value_text(argv[i]));
if (zData != null)
{
MD5Update(p, zData, zData.Length);
}
}
}
public static Md5Hash Calculate(Stream stream)
{
var context = new MD5Context();
context.Initialize();
var size = stream.Length;
var savePosition = stream.Position;
long totalBytes = 0;
byte[] buffer = new byte[bufferSize];
int readBytes;
try {
stream.Seek(0, SeekOrigin.Begin);
do
{
readBytes = stream.Read(buffer, 0, bufferSize);
totalBytes += readBytes;
context.Update(buffer, readBytes);
}while(readBytes > 0 && totalBytes < size);
} finally {
try {
stream.Seek(savePosition, SeekOrigin.Begin);
} catch {
}
}
context.Final();
return(context.ToMd5Hash());
}
// Update given Context to include Length bytes of Input
public unsafe static void MD5Update(ref MD5Context Context, byte *Input, UInt32 Length)
{
UInt32 Index;
UInt32 PartLen;
UInt32 I;
Index = (Context.Count[0] >> 3) & 0x3f;
Context.Count[0] += Length << 3;
if (Context.Count[0] < (Length << 3))
{
Context.Count[1]++;
}
Context.Count[1] += Length >> 29;
PartLen = 64 - Index;
if (Length >= PartLen)
{
CopyMemory(Context.Buffer.GetPointer(Index), (IntPtr)Input, (UIntPtr)PartLen);
Transform(Context.Buffer.GetPointer(), ref Context.State);
I = PartLen;
while (I + 63 < Length)
{
Transform((IntPtr)(Input + I), ref Context.State);
I += 64;
}
Index = 0;
}
else
{
I = 0;
}
CopyMemory(Context.Buffer.GetPointer(Index), (IntPtr)(&Input[I]), (UIntPtr)(Length - I));
}
public static Md5Hash Calculate(byte[] data)
{
var context = new MD5Context();
context.Initialize();
context.Update(data);
context.Final();
return(context.ToMd5Hash());
}
/*
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/
static void MD5Init(MD5Context ctx)
{
ctx.isInit = true;
ctx.buf[0] = 0x67452301;
ctx.buf[1] = 0xefcdab89;
ctx.buf[2] = 0x98badcfe;
ctx.buf[3] = 0x10325476;
ctx.bits[0] = 0;
ctx.bits[1] = 0;
}
// Initialize given Context
public static void MD5Init(ref MD5Context Context)
{
Context.State[0] = 0x67452301;
Context.State[1] = 0xefcdab89;
Context.State[2] = 0x98badcfe;
Context.State[3] = 0x10325476;
Context.Count[0] = 0;
Context.Count[1] = 0;
Context.Buffer = new MD5Buffer();
}
/*
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
static void MD5Update(MD5Context pCtx, byte[] buf, int len)
{
MD5Context ctx = (MD5Context)pCtx;
int t;
/* Update bitcount */
t = (int)ctx.bits[0];
if ((ctx.bits[0] = (u32)(t + ((u32)len << 3))) < t)
{
ctx.bits[1]++; /* Carry from low to high */
}
ctx.bits[1] += (u32)(len >> 29);
t = (t >> 3) & 0x3f; /* Bytes already in shsInfo.data */
/* Handle any leading odd-sized chunks */
int _buf = 0; // Offset into buffer
int p = t; //Offset into ctx._in
if (t != 0)
{
//byte p = (byte)ctx._in + t;
t = 64 - t;
if (len < t)
{
Buffer.BlockCopy(buf, _buf, ctx._in, p, len);// memcpy( p, buf, len );
return;
}
Buffer.BlockCopy(buf, _buf, ctx._in, p, t); //memcpy( p, buf, t );
//byteReverse(ctx._in, 16);
MD5Transform(ctx.buf, ctx._in);
_buf += t;// buf += t;
len -= t;
}
/* Process data in 64-byte chunks */
while (len >= 64)
{
Buffer.BlockCopy(buf, _buf, ctx._in, 0, 64);//memcpy( ctx._in, buf, 64 );
//byteReverse(ctx._in, 16);
MD5Transform(ctx.buf, ctx._in);
_buf += 64;// buf += 64;
len -= 64;
}
/* Handle any remaining bytes of data. */
Buffer.BlockCopy(buf, _buf, ctx._in, 0, len); //memcpy( ctx._in, buf, len );
}
/*
* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
static void MD5Final(byte[] digest, MD5Context pCtx)
{
MD5Context ctx = pCtx;
int count;
int p;
/* Compute number of bytes mod 64 */
count = (int)(ctx.bits[0] >> 3) & 0x3F;
/* Set the first char of padding to 0x80. This is safe since there is
* always at least one byte free */
p = count;
ctx._in[p++] = 0x80;
/* Bytes of padding needed to make 64 bytes */
count = 64 - 1 - count;
/* Pad out to 56 mod 64 */
if (count < 8)
{
/* Two lots of padding: Pad the first block to 64 bytes */
Array.Clear(ctx._in, p, count);//memset(p, 0, count);
//byteReverse( ctx._in, 16 );
MD5Transform(ctx.buf, ctx._in);
/* Now fill the next block with 56 bytes */
Array.Clear(ctx._in, 0, 56);//memset(ctx._in, 0, 56);
}
else
{
/* Pad block to 56 bytes */
Array.Clear(ctx._in, p, count - 8);//memset(p, 0, count-8);
}
//byteReverse( ctx._in, 14 );
/* Append length in bits and transform */
ctx._in[14] = (byte)ctx.bits[0];
ctx._in[15] = (byte)ctx.bits[1];
MD5Transform(ctx.buf, ctx._in);
//byteReverse( ctx.buf, 4 );
Buffer.BlockCopy(ctx.buf, 0, digest, 0, 16);//memcpy(digest, ctx.buf, 16);
//memset(ctx, 0, sizeof(ctx)); /* In case it is sensitive */
Array.Clear(ctx._in, 0, ctx._in.Length);
Array.Clear(ctx.bits, 0, ctx.bits.Length);
Array.Clear(ctx.buf, 0, ctx.buf.Length);
ctx._Mem = null;
}
/*
** A TCL command for md5. The argument is the text to be hashed. The
** Result is the hash in base64.
*/
static int md5_cmd(object cd, Tcl_Interp interp, int argc, Tcl_Obj[] argv)
{
MD5Context ctx = new MD5Context();
byte[] digest = new byte[16];
byte[] zBuf = new byte[32];
if (argc != 2)
{
TCL.Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0],
" TEXT\"");
return(TCL.TCL_ERROR);
}
MD5Init(ctx);
MD5Update(ctx, Encoding.UTF8.GetBytes(argv[1].ToString()), Encoding.UTF8.GetByteCount(argv[1].ToString()));
MD5Final(digest, ctx);
DigestToBase16(digest, zBuf);
TCL.Tcl_AppendResult(interp, Encoding.UTF8.GetString(zBuf));
return(TCL.TCL_OK);
}
// Finalize given Context, create Digest and zeroize Context
public unsafe static void MD5Final(ref MD5Context Context, out MD5Digest Digest)
{
MD5CBits Bits;
UInt32 Index;
UInt32 PadLen;
Decode(Context.Count.GetPointer(), Bits.GetPointer(), 2);
Index = (Context.Count[0] >> 3) & 0x3f;
if (Index < 56)
{
PadLen = 56 - Index;
}
else
{
PadLen = 120 - Index;
}
MD5Update(ref Context, (byte *)PADDING.GetPointer(), PadLen);
MD5Update(ref Context, (byte *)Bits.GetPointer(), 8);
Decode(Context.State.GetPointer(), Digest.GetPointer(), 4);
Context = new MD5Context();
}
/*
** A TCL command for md5. The argument is the text to be hashed. The
** Result is the hash in base64.
*/
static int md5_cmd( object cd, Tcl_Interp interp, int argc, Tcl_Obj[] argv )
{
MD5Context ctx = new MD5Context();
byte[] digest = new byte[16];
byte[] zBuf = new byte[32];
if ( argc != 2 )
{
TCL.Tcl_AppendResult( interp, "wrong # args: should be \"", argv[0],
" TEXT\"" );
return TCL.TCL_ERROR;
}
MD5Init( ctx );
MD5Update( ctx, Encoding.UTF8.GetBytes( argv[1].ToString() ), Encoding.UTF8.GetByteCount( argv[1].ToString() ) );
MD5Final( digest, ctx );
DigestToBase16( digest, zBuf );
TCL.Tcl_AppendResult( interp, Encoding.UTF8.GetString( zBuf ) );
return TCL.TCL_OK;
}
/*
* Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
static void MD5Final( byte[] digest, MD5Context pCtx )
{
MD5Context ctx = pCtx;
int count;
int p;
/* Compute number of bytes mod 64 */
count = (int)( ctx.bits[0] >> 3 ) & 0x3F;
/* Set the first char of padding to 0x80. This is safe since there is
always at least one byte free */
p = count;
ctx._in[p++] = 0x80;
/* Bytes of padding needed to make 64 bytes */
count = 64 - 1 - count;
/* Pad out to 56 mod 64 */
if ( count < 8 )
{
/* Two lots of padding: Pad the first block to 64 bytes */
Array.Clear( ctx._in, p, count );//memset(p, 0, count);
//byteReverse( ctx._in, 16 );
MD5Transform( ctx.buf, ctx._in );
/* Now fill the next block with 56 bytes */
Array.Clear( ctx._in, 0, 56 );//memset(ctx._in, 0, 56);
}
else
{
/* Pad block to 56 bytes */
Array.Clear( ctx._in, p, count - 8 );//memset(p, 0, count-8);
}
//byteReverse( ctx._in, 14 );
/* Append length in bits and transform */
ctx._in[14] = (byte)ctx.bits[0];
ctx._in[15] = (byte)ctx.bits[1];
MD5Transform( ctx.buf, ctx._in );
//byteReverse( ctx.buf, 4 );
Buffer.BlockCopy( ctx.buf, 0, digest, 0, 16 );//memcpy(digest, ctx.buf, 16);
//memset(ctx, 0, sizeof(ctx)); /* In case it is sensitive */
Array.Clear( ctx._in, 0, ctx._in.Length );
Array.Clear( ctx.bits, 0, ctx.bits.Length );
Array.Clear( ctx.buf, 0, ctx.buf.Length );
ctx._Mem = null;
}
/*
* Update context to reflect the concatenation of another buffer full
* of bytes.
*/
static void MD5Update( MD5Context pCtx, byte[] buf, int len )
{
MD5Context ctx = (MD5Context)pCtx;
int t;
/* Update bitcount */
t = (int)ctx.bits[0];
if ( ( ctx.bits[0] = (u32)( t + ( (u32)len << 3 ) ) ) < t )
ctx.bits[1]++; /* Carry from low to high */
ctx.bits[1] += (u32)( len >> 29 );
t = ( t >> 3 ) & 0x3f; /* Bytes already in shsInfo.data */
/* Handle any leading odd-sized chunks */
int _buf = 0; // Offset into buffer
int p = t; //Offset into ctx._in
if ( t != 0 )
{
//byte p = (byte)ctx._in + t;
t = 64 - t;
if ( len < t )
{
Buffer.BlockCopy( buf, _buf, ctx._in, p, len );// memcpy( p, buf, len );
return;
}
Buffer.BlockCopy( buf, _buf, ctx._in, p, t ); //memcpy( p, buf, t );
//byteReverse(ctx._in, 16);
MD5Transform( ctx.buf, ctx._in );
_buf += t;// buf += t;
len -= t;
}
/* Process data in 64-byte chunks */
while ( len >= 64 )
{
Buffer.BlockCopy( buf, _buf, ctx._in, 0, 64 );//memcpy( ctx._in, buf, 64 );
//byteReverse(ctx._in, 16);
MD5Transform( ctx.buf, ctx._in );
_buf += 64;// buf += 64;
len -= 64;
}
/* Handle any remaining bytes of data. */
Buffer.BlockCopy( buf, _buf, ctx._in, 0, len ); //memcpy( ctx._in, buf, len );
}
/*
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/
static void MD5Init( MD5Context ctx )
{
ctx.isInit = true;
ctx.buf[0] = 0x67452301;
ctx.buf[1] = 0xefcdab89;
ctx.buf[2] = 0x98badcfe;
ctx.buf[3] = 0x10325476;
ctx.bits[0] = 0;
ctx.bits[1] = 0;
}
