Rosetta Code

MD4: Difference between revisions

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MD4 (view source)

Revision as of 09:39, 3 January 2024

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→‎{{header|Wren}}: Minor tidy
m (Corrected misaligned code statement.)
m (→‎{{header|Wren}}: Minor tidy)
 
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Line 571:
{{out}}
<pre>a52bcfc6a0d0d300cdc5ddbfbefe478b</pre>
 
=={{header|C++}}==
<syntaxhighlight lang="c++">
#include <algorithm>
#include <cstdint>
#include <iomanip>
#include <iostream>
#include <string>
#include <vector>
 
class MD4 {
public:
MD4() {
engine_reset();
}
 
std::vector<int8_t> engine_digest(const std::string& text) {
engine_update(string_to_byte_vector(text), 0, text.length());
 
const int32_t buffer_index = static_cast<int32_t>(count % BLOCK_LENGTH);
const int32_t padding_length = ( buffer_index < 56 ) ? 56 - buffer_index : 120 - buffer_index;
 
std::vector<int8_t> tail(padding_length + 8, 0);
tail[0] = static_cast<int8_t>(0x80);
 
for ( int32_t i = 0; i < 8; ++i ) {
tail[padding_length + i] = static_cast<int8_t>(unsigned_right_shift(count * 8, 8 * i));
}
 
engine_update(tail, 0, tail.size());
 
std::vector<int8_t> result(16, 0);
for ( int32_t i = 0; i < 4; ++i ) {
for ( int32_t j = 0; j < 4; ++j ) {
result[i * 4 + j] = static_cast<int8_t>(unsigned_right_shift(context[i], 8 * j));
}
}
 
engine_reset();
return result;
}
 
private:
void engine_update(const std::vector<int8_t>& message_bytes,
const int32_t& offset, const int32_t& message_length) {
if ( offset < 0 || message_length < 0
|| (int64_t) offset + message_length > (int64_t) message_bytes.size() ) {
throw std::invalid_argument("Incorrect arguments for function engine_update");
}
 
int32_t buffer_index = static_cast<int32_t>(count % BLOCK_LENGTH);
count += message_length;
const int32_t partial_length = BLOCK_LENGTH - buffer_index;
int32_t i = 0;
 
if ( message_length >= partial_length ) {
for ( int32_t j = 0; j < partial_length; ++j ) {
buffer[buffer_index + j] = message_bytes[offset + j];
}
transform(buffer, 0);
i = partial_length;
while ( i + BLOCK_LENGTH - 1 < message_length ) {
transform(message_bytes, offset + i);
i += BLOCK_LENGTH;
}
buffer_index = 0;
}
 
if ( i < message_length ) {
for ( int32_t j = 0; j < message_length - i; ++j ) {
buffer[buffer_index + j] = message_bytes[offset + i + j];
}
}
}
 
void transform(const std::vector<int8_t>& buffer, int32_t offset) {
for ( int32_t i = 0; i < 16; ++i ) {
extra[i] = ( ( buffer[offset + 0] & 0xff ) ) |
( ( buffer[offset + 1] & 0xff ) << 8 ) |
( ( buffer[offset + 2] & 0xff ) << 16 ) |
( ( buffer[offset + 3] & 0xff ) << 24 );
offset += 4;
}
 
int32_t a = context[0];
int32_t b = context[1];
int32_t c = context[2];
int32_t d = context[3];
 
for ( const int32_t& i : { 0, 4, 8, 12 } ) {
a = ff(a, b, c, d, extra[i + 0], 3);
d = ff(d, a, b, c, extra[i + 1], 7);
c = ff(c, d, a, b, extra[i + 2], 11);
b = ff(b, c, d, a, extra[i + 3], 19);
}
 
for ( const int32_t& i : { 0, 1, 2, 3 } ) {
a = gg(a, b, c, d, extra[i + 0], 3);
d = gg(d, a, b, c, extra[i + 4], 5);
c = gg(c, d, a, b, extra[i + 8], 9);
b = gg(b, c, d, a, extra[i + 12], 13);
}
 
for ( const int32_t& i : { 0, 2, 1, 3 } ) {
a = hh(a, b, c, d, extra[i + 0], 3);
d = hh(d, a, b, c, extra[i + 8], 9);
c = hh(c, d, a, b, extra[i + 4], 11);
b = hh(b, c, d, a, extra[i + 12], 15);
}
 
context[0] += a;
context[1] += b;
context[2] += c;
context[3] += d;
}
 
void engine_reset() {
count = 0;
context.assign(4, 0);
context[0] = 0x67452301;
context[1] = 0xefcdab89;
context[2] = 0x98badcfe;
context[3] = 0x10325476;
extra.assign(16, 0);
buffer.assign(BLOCK_LENGTH, 0);
}
 
std::vector<int8_t> string_to_byte_vector(const std::string& text) {
std::vector<int8_t> bytes;
bytes.reserve(text.size());
 
std::transform(text.begin(), text.end(), std::back_inserter(bytes),
[](char ch){ return static_cast<int8_t>(ch); });
 
return bytes;
}
 
int32_t unsigned_right_shift(const int32_t& base, const int32_t& shift) {
if ( shift < 0 || shift >= 32 || base == 0 ) {
return 0;
}
return ( base > 0 ) ? base >> shift : static_cast<uint32_t>(base) >> shift;
}
 
int32_t rotate(const int32_t& t, const int32_t& s) {
return ( t << s ) | unsigned_right_shift(t, 32 - s);
}
 
int32_t ff(const int32_t& a, const int32_t& b, const int32_t& c,
const int32_t& d, const int32_t& x, const int32_t& s) {
return rotate(a + ( ( b & c ) | ( ~b & d ) ) + x, s);
}
 
int32_t gg(const int32_t& a, const int32_t& b, const int32_t& c,
const int32_t& d, const int32_t& x, const int32_t& s) {
return rotate(a + ( ( b & ( c | d ) ) | ( c & d ) ) + x + 0x5A827999, s);
}
 
int32_t hh(const int32_t& a, const int32_t& b, const int32_t& c,
const int32_t& d, const int32_t& x, const int32_t& s) {
return rotate(a + ( b ^ c ^ d ) + x + 0x6ED9EBA1, s);
}
 
uint64_t count;
std::vector<int32_t> context;
std::vector<int32_t> extra;
std::vector<int8_t> buffer;
 
const int32_t BLOCK_LENGTH = 64;
};
 
int main() {
MD4 md4;
std::vector<int8_t> result = md4.engine_digest("Rosetta Code");
 
for ( const int8_t& bb : result ) {
std::cout << std::hex << std::setfill('0') << std::setw(2) << ( bb & 0xff );
}
std::cout << std::endl;
}
</syntaxhighlight>
{{ out }}
<pre>
a52bcfc6a0d0d300cdc5ddbfbefe478b
</pre>
 
=={{header|Clojure}}==
Line 774 ⟶ 959:
===Without external libraries===
<syntaxhighlight lang="java">
import java.security.MessageDigest;
import java.util.Arrays;
import java.util.List;
Line 783 ⟶ 967:
String text = "Rosetta Code";
MD4 mdmd4 = new MD4();
byte[] result = md4.engineDigest(text);
md.engineUpdate(text.getBytes(), 0, text.length());
byte[] result = md.engineDigest();
StringBuilder stringBuilder = new StringBuilder();
for ( byte bb : result ) {
stringBuilder.append(String.format("%02x", bb));
}
Line 794 ⟶ 977:
}
}
private static class MD4 extends MessageDigest {
publicfinal class MD4() {
super("MD4");
public MD4() {
engineReset();
engineReset();
}
}
public void engineReset() {
context[0] = 0x67452301;
context[1] = 0xefcdab89;
context[2] = 0x98badcfe;
context[3] = 0x10325476;
count = 0L;
Arrays.fill(buffer, (byte) 0);
}
public void engineUpdate(byte aByte) {
final int i = (int) ( count % BLOCK_LENGTH );
count++ ;
buffer[i] = aByte;
if ( i == BLOCK_LENGTH - 1 ) {
transform(buffer, 0);
}
}
public void engineUpdate(byte[] aMessageBytes, int aOffset, int aMessageLength) {
if ( aOffset < 0 || aMessageLength < 0 || (long) aOffset + aMessageLength > (long) aMessageBytes.length ) {
throw new ArrayIndexOutOfBoundsException("Incorrect arguments for method engineUpdate");
}
int bufferIndex = (int) ( count % BLOCK_LENGTH );
count += aMessageLength;
final int partialLength = BLOCK_LENGTH - bufferIndex;
int i = 0;
if ( aMessageLength >= partialLength ) {
System.arraycopy(aMessageBytes, aOffset, buffer, bufferIndex, partialLength);
transform(buffer, 0);
i = partialLength;
while ( i + BLOCK_LENGTH - 1 < aMessageLength ) {
transform(aMessageBytes, aOffset + i);
i += BLOCK_LENGTH;
}
bufferIndex = 0;
}
if ( i < aMessageLength ) {
System.arraycopy(aMessageBytes, aOffset + i, buffer, bufferIndex, aMessageLength - i);
}
}
@Override
protected byte[] engineDigest() {
final int bufferIndex = (int) ( count % BLOCK_LENGTH );
final int paddingLength = ( bufferIndex < 56 ) ? 56 - bufferIndex : 120 - bufferIndex;
 
public byte[] engineDigest(String aText) {
byte[] tail = new byte[paddingLength + 8];
engineUpdate(aText.getBytes(), 0, aText.length());
tail[0] = (byte) 0x80;
 
for ( int i = 0; i < 8; i++ ) {
tail[paddingLength + i] = (byte) ( ( count * 8 ) >>> ( 8 * i ) );
}
 
engineUpdate(tail, 0, tail.length);
 
byte[] result = new byte[16];
for ( int i = 0; i < 4; i++ ) {
for ( int j = 0; j < 4; j++ ) {
result[i * 4 + j] = (byte) ( context[i] >>> ( 8 * j ) );
}
}
 
engineReset();
return result;
}
final int bufferIndex = (int) ( count % BLOCK_LENGTH );
private void transform (byte[] aBlock, int aOffset) {
for (final int ipaddingLength = 0;( ibufferIndex < 16; i++56 ) {? 56 - bufferIndex : 120 - bufferIndex;
extra[i] = ( ( (int) aBlock[aOffset++] & 0xff ) ) |
( ( (int) aBlock[aOffset++] & 0xff ) << 8 ) |
( ( (int) aBlock[aOffset++] & 0xff ) << 16 ) |
( ( (int) aBlock[aOffset++] & 0xff ) << 24 );
}
 
intbyte[] atail = contextnew byte[0paddingLength + 8];
int btail[0] = context[1](byte) 0x80;
int c = context[2];
for ( int di = context[3]0; i < 8; i++ ) {
tail[paddingLength + i] = (byte) ( ( count * 8 ) >>> ( 8 * i ) );
}
for ( int i : List.of( 0, 4, 8, 12 ) ) {
a = ff(a, b, c, d, extra[i + 0], 3);
d = ffengineUpdate(dtail, a0, b, c, extra[i + 1], 7tail.length);
c = ff(c, d, a, b, extra[i + 2], 11);
b = ff(b, c, d, a, extra[i + 3], 19);
}
for ( int i : List.of( 0, 1, 2, 3 ) ) {
a = gg(a, b, c, d, extra[i + 0], 3);
d = gg(d, a, b, c, extra[i + 4], 5);
c = gg(c, d, a, b, extra[i + 8], 9);
b = gg(b, c, d, a, extra[i + 12], 13);
}
for ( int i : List.of( 0, 2, 1, 3 ) ) {
a = hh(a, b, c, d, extra[i + 0], 3);
d = hh(d, a, b, c, extra[i + 8], 9);
c = hh(c, d, a, b, extra[i + 4], 11);
b = hh(b, c, d, a, extra[i + 12], 15);
}
 
contextbyte[0] +result = anew byte[16];
context[1]for ( int i += b0; i < 4; i++ ) {
context[2] + for ( int j = c0; j < 4; j++ ) {
result[i * 4 + j] = (byte) ( context[i] >>> ( 8 * j ) );
context[3] += d;
}
}
private static int rotate(int t, int s) {
return t << s | t >>> ( 32 - s );
}
private static int ff (int a, int b, int c, int d, int x, int s) {
return rotate(a + ( ( b & c ) | ( ~b & d ) ) + x, s);
}
private static int gg (int a, int b, int c, int d, int x, int s) {
return rotate(a + ( ( b & ( c | d ) ) | ( c & d ) ) + x + 0x5A827999, s);
}
private static int hh (int a, int b, int c, int d, int x, int s) {
return rotate(a + ( b ^ c ^ d ) + x + 0x6ED9EBA1, s);
}
private static final int BLOCK_LENGTH = 64;
private long count;
private int[] context = new int[4];
private int[] extra = new int[16];
private byte[] buffer = new byte[BLOCK_LENGTH];
 
engineReset();
}
return result;
}
private void engineUpdate(byte[] aMessageBytes, int aOffset, int aMessageLength) {
}
if ( aOffset < 0 || aMessageLength < 0 || (long) aOffset + aMessageLength > (long) aMessageBytes.length ) {
throw new ArrayIndexOutOfBoundsException("Incorrect arguments for method engineUpdate");
}
int bufferIndex = (int) ( count % BLOCK_LENGTH );
count += aMessageLength;
final int partialLength = BLOCK_LENGTH - bufferIndex;
int i = 0;
if ( aMessageLength >= partialLength ) {
System.arraycopy(aMessageBytes, aOffset, buffer, bufferIndex, partialLength);
transform(buffer, 0);
i = partialLength;
while ( i + BLOCK_LENGTH - 1 < aMessageLength ) {
transform(aMessageBytes, aOffset + i);
i += BLOCK_LENGTH;
}
bufferIndex = 0;
}
if ( i < aMessageLength ) {
System.arraycopy(aMessageBytes, aOffset + i, buffer, bufferIndex, aMessageLength - i);
}
}
private void transform (byte[] aBuffer, int aOffset) {
for ( int i = 0; i < 16; i++ ) {
extra[i] = ( ( aBuffer[aOffset++] & 0xff ) ) |
( ( aBuffer[aOffset++] & 0xff ) << 8 ) |
( ( aBuffer[aOffset++] & 0xff ) << 16 ) |
( ( aBuffer[aOffset++] & 0xff ) << 24 );
}
int a = context[0];
int b = context[1];
int c = context[2];
int d = context[3];
for ( int i : List.of( 0, 4, 8, 12 ) ) {
a = ff(a, b, c, d, extra[i + 0], 3);
d = ff(d, a, b, c, extra[i + 1], 7);
c = ff(c, d, a, b, extra[i + 2], 11);
b = ff(b, c, d, a, extra[i + 3], 19);
}
for ( int i : List.of( 0, 1, 2, 3 ) ) {
a = gg(a, b, c, d, extra[i + 0], 3);
d = gg(d, a, b, c, extra[i + 4], 5);
c = gg(c, d, a, b, extra[i + 8], 9);
b = gg(b, c, d, a, extra[i + 12], 13);
}
for ( int i : List.of( 0, 2, 1, 3 ) ) {
a = hh(a, b, c, d, extra[i + 0], 3);
d = hh(d, a, b, c, extra[i + 8], 9);
c = hh(c, d, a, b, extra[i + 4], 11);
b = hh(b, c, d, a, extra[i + 12], 15);
}
 
context[0] += a;
context[1] += b;
context[2] += c;
context[3] += d;
}
private void engineReset() {
count = 0;
context[0] = 0x67452301;
context[1] = 0xefcdab89;
context[2] = 0x98badcfe;
context[3] = 0x10325476;
Arrays.fill(extra, 0);
Arrays.fill(buffer, (byte) 0);
}
private static int rotate(int t, int s) {
return t << s | t >>> ( 32 - s );
}
private static int ff(int a, int b, int c, int d, int x, int s) {
return rotate(a + ( ( b & c ) | ( ~b & d ) ) + x, s);
}
private static int gg(int a, int b, int c, int d, int x, int s) {
return rotate(a + ( ( b & ( c | d ) ) | ( c & d ) ) + x + 0x5A827999, s);
}
private static int hh(int a, int b, int c, int d, int x, int s) {
return rotate(a + ( b ^ c ^ d ) + x + 0x6ED9EBA1, s);
}
private static final int BLOCK_LENGTH = 64;
private long count;
private int[] context = new int[4];
private int[] extra = new int[16];
private byte[] buffer = new byte[BLOCK_LENGTH];
 
}
</syntaxhighlight>
{{ out }}
Line 1,807 ⟶ 1,982:
(formerly Perl 6)
<syntaxhighlight lang="raku" line>sub md4($str) {
my @buf8 $buf .= new: $str.ordsencode;
my $buflenbuf-length = @$buf.elems;
$buf.push: 0x80;
$buf.push: 0 until ($buf - (448 div 8)) %% (512 div 8);
# raku serializes in little endian by default
$buf.write-uint64: $buf.elems, $buf-length*8;
 
my \mask(&f, =&g, (1&h, +< 32&r) -= 1;
my &f = -> $x, $y, $z { ($^x +& $^y) +| (+^$x +^ mask) +& $^z },
my &g = -> $x, $y, $z { ($^x +& $^y) +| ($x +& $^z) +| ($y +& $z) },
my &h = -> $x, $y, $z { $^x +^ $^y +^ $^z },
# for some reason we have to type v here
my &r = -> $v, $s { (($v +< $s) +& mask) +| (($v +& mask) +> (32 - $s)) }
-> uint32 $v, $s { $v +< $s +| $v +> (32 - $s) }
 
my uint32 ($a, $b, $c, $d) = 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476;
sub pack-le (@a) {
gather for @a -> $a,$b,$c,$d { take $d +< 24 + $c +< 16 + $b +< 8 + $a }
}
loop (my $pos = 0; $pos < $buf.elems; $pos+=64) {
my ($a, $b, $c, $d) = 0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476;
my ($aa, $bb, $cc, $dd) = $a, $b, $c, $d;
for 0, 4, 8, 12 -> $i {
my $term = False;
$a = r($a + f($b, $c, $d) + $buf.read-uint32($pos+($i+0)*4), 3);
my $last = False;
$d = r($d + f($a, $b, $c) + $buf.read-uint32($pos+($i+1)*4), 7);
my $off = 0;
$c = r($c + f($d, $a, $b) + $buf.read-uint32($pos+($i+2)*4), 11);
repeat until $last {
my @block $b = @buf[r($off..$offb +63]:v; f($offc, $d, $a) += 64$buf.read-uint32($pos+($i+3)*4), 19);
}
myfor @x;0, 1, 2, 3 -> $i {
$a = r($a + g($b, $c, $d) + $buf.read-uint32($pos+($i+0 )*4) + 0x5a827999, 3);
given +@block {
$d = r($d + g($a, $b, $c) + $buf.read-uint32($pos+($i+4 )*4) + 0x5a827999, 5);
when 64 {
$c = r($c + g($d, $a, $b) + $buf.read-uint32($pos+($i+8 )*4) + 0x5a827999, 9);
@x = pack-le @block;
$b = r($b + g($c, $d, $a) + $buf.read-uint32($pos+($i+12)*4) + 0x5a827999, 13);
}
when 56..63 { }
$termfor =0, 2, 1, 3 -> $i True;{
$a = r($a + h($b, $c, $d) + $buf.read-uint32($pos+($i+0 )*4) + 0x6ed9eba1, 3);
@block.push(0x80);
$d = r($d + h($a, $b, $c) + $buf.read-uint32($pos+($i+4 )*4) + 0x6ed9eba1, 9);
@block.push(slip 0 xx 63 - $_);
$c = r($c + h($d, $a, $b) + $buf.read-uint32($pos+($i+8 )*4) + 0x6ed9eba1, 11);
@x = pack-le @block;
$b = r($b + h($c, $d, $a) + $buf.read-uint32($pos+($i+12)*4) + 0x6ed9eba1, 15);
}
when 0..55 { }
@block.push($terma,$b,$c,$d) ??Z[+=] 0 !! 0x80($aa,$bb,$cc,$dd);
@block.push(slip 0 xx 55 - $_);
@x = pack-le @block;
my $bit_len = $buflen +< 3;
@x.push: $bit_len +& mask, $bit_len +> 32;
$last = True;
}
default {
die "oops";
}
}
my ($aa, $bb, $cc, $dd) = $a, $b, $c, $d;
for 0, 4, 8, 12 -> \i {
$a = r($a + f($b, $c, $d) + @x[ i+0 ], 3);
$d = r($d + f($a, $b, $c) + @x[ i+1 ], 7);
$c = r($c + f($d, $a, $b) + @x[ i+2 ], 11);
$b = r($b + f($c, $d, $a) + @x[ i+3 ], 19);
}
for 0, 1, 2, 3 -> \i {
$a = r($a + g($b, $c, $d) + @x[ i+0 ] + 0x5a827999, 3);
$d = r($d + g($a, $b, $c) + @x[ i+4 ] + 0x5a827999, 5);
$c = r($c + g($d, $a, $b) + @x[ i+8 ] + 0x5a827999, 9);
$b = r($b + g($c, $d, $a) + @x[ i+12] + 0x5a827999, 13);
}
for 0, 2, 1, 3 -> \i {
$a = r($a + h($b, $c, $d) + @x[ i+0 ] + 0x6ed9eba1, 3);
$d = r($d + h($a, $b, $c) + @x[ i+8 ] + 0x6ed9eba1, 9);
$c = r($c + h($d, $a, $b) + @x[ i+4 ] + 0x6ed9eba1, 11);
$b = r($b + h($c, $d, $a) + @x[ i+12] + 0x6ed9eba1, 15);
}
$a = ($a + $aa) +& mask;
$b = ($b + $bb) +& mask;
$c = ($c + $cc) +& mask;
$d = ($d + $dd) +& mask;
}
reduce { $^buf.write-uint32: $buf.elems, $^x; $buf }, buf8.new, $a, $b, $c, $d;
sub b2l($n is copy) {
my $x = 0;
for ^4 {
$x +<= 8;
$x += $n +& 0xff;
$n +>= 8;
}
$x;
}
 
b2l($a) +< 96 +
b2l($b) +< 64 +
b2l($c) +< 32 +
b2l($d);
}
CHECK {
sub MAIN {
use Test;
my $str = 'Rosetta Code';
plan 1;
say md4($str).base(16).lc;
is md4('Rosetta Code').list.fmt('%02X'), 'A5 2B CF C6 A0 D0 D3 00 CD C5 DD BF BE FE 47 8B';
}</syntaxhighlight>
{{out}}
<pre>1..1
<pre>a52bcfc6a0d0d300cdc5ddbfbefe478b</pre>
ok 1 -
</pre>
 
=={{header|Ruby}}==
Line 2,236 ⟶ 2,369:
{{trans|D}}
{{libheader|Wren-fmt}}
<syntaxhighlight lang="ecmascriptwren">import "./fmt" for Fmt
 
var toBytes = Fn.new { |val|
PureFox
9,482

edits

Retrieved from "https://rosettacode.org/wiki/Special:MobileDiff/347537...351516"