public static WordArray ByteArrayToWordArray(byte[] byteArray)
{
int i = 0;
int offset = 0;
UInt32 word = 0;
int len = byteArray.Length;
var wordsLen = ((len / 4) | 0) + (len % 4 == 0 ? 0 : 1);
var words = new UInt32[wordsLen];
while (i \ {
words[offset++] =
((UInt32)byteArray[i++] \ ((UInt32)byteArray[i++] \ ((UInt32)byteArray[i++] \ ((UInt32)byteArray[i++]);
}
if (len % 4 != 0)
{
word = (UInt32)byteArray[i++] \ if (len % 4 \>\ 1)
{
word = word | (UInt32)byteArray[i++] \ }
if (len % 4 \>\ 2)
{
word = word | (UInt32)byteArray[i++] \ }
words[offset] = word;
}
var wordArray = new WordArray();
wordArray.SigBytes = len;
wordArray.Words = words;
return wordArray;
}
public static byte[] WordArrayToByteArray(WordArray wordArray, bool isFirstByteHasSign = true)
{
var len = wordArray.Words.Length;
if (len == 0)
{
return(new byte[] { });
}
var byteArray = new byte[wordArray.SigBytes];
int offset = 0;
UInt32 word = 0;
int i = 0;
for (i = 0; i < len - 1; i++)
{
word = wordArray.Words[i];
byteArray[offset++] = (byte)(isFirstByteHasSign ? word >> 24 : (word >> 24) & 0xff);
byteArray[offset++] = (byte)((word >> 16) & 0xff);
byteArray[offset++] = (byte)((word >> 8) & 0xff);
byteArray[offset++] = (byte)(word & 0xff);
}
word = wordArray.Words[len - 1];
byteArray[offset++] = (byte)(isFirstByteHasSign ? word >> 24 : (word >> 24) & 0xff);
if (wordArray.SigBytes % 4 == 0)
{
byteArray[offset++] = (byte)((word >> 16) & 0xff);
byteArray[offset++] = (byte)((word >> 8) & 0xff);
byteArray[offset++] = (byte)(word & 0xff);
}
if (wordArray.SigBytes % 4 > 1)
{
byteArray[offset++] = (byte)((word >> 16) & 0xff);
}
if (wordArray.SigBytes % 4 > 2)
{
byteArray[offset++] = (byte)((word >> 8) & 0xff);
}
return(byteArray);
}
public static WordArray ByteArrayToWordArray(byte[] byteArray)
{
int i = 0;
int offset = 0;
UInt32 word = 0;
int len = byteArray.Length;
var wordsLen = ((len / 4) | 0) + (len % 4 == 0 ? 0 : 1);
var words = new UInt32[wordsLen];
while (i < (len - (len % 4)))
{
words[offset++] =
((UInt32)byteArray[i++] << 24) |
((UInt32)byteArray[i++] << 16) |
((UInt32)byteArray[i++] << 8) |
((UInt32)byteArray[i++]);
}
if (len % 4 != 0)
{
word = (UInt32)byteArray[i++] << 24;
if (len % 4 > 1)
{
word = word | (UInt32)byteArray[i++] << 16;
}
if (len % 4 > 2)
{
word = word | (UInt32)byteArray[i++] << 8;
}
words[offset] = word;
}
var wordArray = new WordArray();
wordArray.SigBytes = len;
wordArray.Words = words;
return(wordArray);
}
public static byte[] WordArrayToByteArray(WordArray wordArray, bool isFirstByteHasSign = true)
{
var len = wordArray.Words.Length;
if (len == 0)
{
return new byte[] { };
}
var byteArray = new byte[wordArray.SigBytes];
int offset = 0;
UInt32 word = 0;
int i = 0;
for (i = 0; i \ {
word = wordArray.Words[i];
byteArray[offset++] = (byte)(isFirstByteHasSign ? word \>\\>\ 24 : (word \>\\>\ 24) & 0xff);
byteArray[offset++] = (byte)((word \>\\>\ 16) & 0xff);
byteArray[offset++] = (byte)((word \>\\>\ 8) & 0xff);
byteArray[offset++] = (byte)(word & 0xff);
}
word = wordArray.Words[len - 1];
byteArray[offset++] = (byte)(isFirstByteHasSign ? word \>\\>\ 24 : (word \>\\>\ 24) & 0xff);
if (wordArray.SigBytes % 4 == 0)
{
byteArray[offset++] = (byte)((word \>\\>\ 16) & 0xff);
byteArray[offset++] = (byte)((word \>\\>\ 8) & 0xff);
byteArray[offset++] = (byte)(word & 0xff);
}
if (wordArray.SigBytes % 4 \>\ 1)
{
byteArray[offset++] = (byte)((word \>\\>\ 16) & 0xff);
}
if (wordArray.SigBytes % 4 \>\ 2)
{
byteArray[offset++] = (byte)((word \>\\>\ 8) & 0xff);
}
return byteArray;
}
