forked from Telodendria/Telodendria
Add Sha2
This commit is contained in:
parent
88a11650cf
commit
94493e6ad8
5 changed files with 312 additions and 1 deletions
2
TODO.txt
2
TODO.txt
|
|
@ -16,7 +16,7 @@ Milestone: v0.2.0
|
|||
|
||||
[~] User registration
|
||||
[x] Username validation
|
||||
[ ] Password hashing
|
||||
[x] Password hashing
|
||||
[ ] User API
|
||||
|
||||
Milestone: v1.0.0
|
||||
|
|
|
|||
27
man/man3/Sha2.3
Normal file
27
man/man3/Sha2.3
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
.Dd $Mdocdate: December 19 2022 $
|
||||
.Dt SHA2 3
|
||||
.Os Telodendria Project
|
||||
.Sh NAME
|
||||
.Nm Sha2
|
||||
.Nd A simple implementation of the SHA2 hashing functions.
|
||||
.Sh SYNOPSIS
|
||||
.In Sha2.h
|
||||
.Ft char *
|
||||
.Fn Sha256 "char *"
|
||||
.Sh DESCRIPTION
|
||||
.Pp
|
||||
This API defines simple functions for computing SHA2 hashes. At the
|
||||
moment, it only defines
|
||||
.Fn Sha256 ,
|
||||
which computes the SHA-256 hash of the given C string. It is not trivial
|
||||
to implement SHA-512 in ANSI C due to the lack of a 64-bit integer
|
||||
type, so that hash function has been omitted.
|
||||
.Sh RETURN VALUES
|
||||
.Pp
|
||||
.Fn Sha256
|
||||
returns a string allocated on the heap using the Memory API, or NULL
|
||||
if there was an error allocating memory for it. The returned string
|
||||
should be freed when it is no longer needed.
|
||||
.Sh SEE ALSO
|
||||
.Xr Memory 3 ,
|
||||
.Xr Base64 3
|
||||
|
|
@ -273,6 +273,12 @@ Encode and decode various parts of the HTTP protocol.
|
|||
Extremely simple HTTP server.
|
||||
</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<td><a href="man/man3/Sha2.3.html">Sha2(3)</a></td>
|
||||
<td>
|
||||
A simple implementation of the SHA2 hashing functions.
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
</details>
|
||||
<hr>
|
||||
|
|
|
|||
247
src/Sha2.c
Normal file
247
src/Sha2.c
Normal file
|
|
@ -0,0 +1,247 @@
|
|||
/*
|
||||
* Copyright (C) 2022 Jordan Bancino <@jordan:bancino.net>
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person
|
||||
* obtaining a copy of this software and associated documentation files
|
||||
* (the "Software"), to deal in the Software without restriction,
|
||||
* including without limitation the rights to use, copy, modify, merge,
|
||||
* publish, distribute, sublicense, and/or sell copies of the Software,
|
||||
* and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
#include <Sha2.h>
|
||||
#include <Memory.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <limits.h>
|
||||
|
||||
#if defined(LONG_BIT) && LONG_BIT == 32
|
||||
typedef unsigned long uint32_t;
|
||||
|
||||
#elif defined(WORD_BIT) && WORD_BIT == 32
|
||||
typedef unsigned int uint32_t;
|
||||
|
||||
#else
|
||||
#error Unable to find suitable integer type for uint32_t
|
||||
#endif
|
||||
|
||||
#define GET_UINT32(x) \
|
||||
(((uint32_t)(x)[0] << 24) | \
|
||||
((uint32_t)(x)[1] << 16) | \
|
||||
((uint32_t)(x)[2] << 8) | \
|
||||
((uint32_t)(x)[3]))
|
||||
|
||||
#define PUT_UINT32(dst, x) { \
|
||||
(dst)[0] = (x) >> 24; \
|
||||
(dst)[1] = (x) >> 16; \
|
||||
(dst)[2] = (x) >> 8; \
|
||||
(dst)[3] = (x); \
|
||||
}
|
||||
|
||||
#define ROTR(x, n) (((x) >> (n)) | ((x) << (32 - (n))))
|
||||
|
||||
#define S0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ (x >> 3))
|
||||
#define S1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ (x >> 10))
|
||||
|
||||
#define T0(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
|
||||
#define T1(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
|
||||
|
||||
#define CH(a, b, c) (((a) & (b)) ^ ((~(a)) & (c)))
|
||||
#define MAJ(a, b, c) (((a) & (b)) ^ ((a) & (c)) ^ ((b) & (c)))
|
||||
#define WW(i) (w[i] = w[i - 16] + S0(w[i - 15]) + w[i - 7] + S1(w[i - 2]))
|
||||
|
||||
#define ROUND(a, b, c, d, e, f, g, h, k, w) { \
|
||||
unsigned long tmp0 = h + T0(e) + CH(e, f, g) + k + w; \
|
||||
unsigned long tmp1 = T1(a) + MAJ(a, b, c); \
|
||||
h = tmp0 + tmp1; \
|
||||
d += tmp0; \
|
||||
}
|
||||
|
||||
typedef struct Sha256Context
|
||||
{
|
||||
size_t length;
|
||||
uint32_t state[8];
|
||||
size_t bufLen;
|
||||
unsigned char buffer[64];
|
||||
} Sha256Context;
|
||||
|
||||
static void
|
||||
Sha256Chunk(Sha256Context * context, unsigned char chunk[64])
|
||||
{
|
||||
const uint32_t rk[64] = {
|
||||
0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, 0x3956c25b, 0x59f111f1,
|
||||
0x923f82a4, 0xab1c5ed5, 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
|
||||
0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, 0xe49b69c1, 0xefbe4786,
|
||||
0x0fc19dc6, 0x240ca1cc, 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
|
||||
0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, 0xc6e00bf3, 0xd5a79147,
|
||||
0x06ca6351, 0x14292967, 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
|
||||
0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, 0xa2bfe8a1, 0xa81a664b,
|
||||
0xc24b8b70, 0xc76c51a3, 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
|
||||
0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, 0x391c0cb3, 0x4ed8aa4a,
|
||||
0x5b9cca4f, 0x682e6ff3, 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
|
||||
0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
|
||||
};
|
||||
|
||||
uint32_t w[64];
|
||||
uint32_t a, b, c, d, e, f, g, h;
|
||||
|
||||
int i;
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
{
|
||||
w[i] = GET_UINT32(&chunk[4 * i]);
|
||||
}
|
||||
|
||||
a = context->state[0];
|
||||
b = context->state[1];
|
||||
c = context->state[2];
|
||||
d = context->state[3];
|
||||
e = context->state[4];
|
||||
f = context->state[5];
|
||||
g = context->state[6];
|
||||
h = context->state[7];
|
||||
|
||||
for (i = 0; i < 16; i += 8)
|
||||
{
|
||||
ROUND(a, b, c, d, e, f, g, h, rk[i], w[i]);
|
||||
ROUND(h, a, b, c, d, e, f, g, rk[i + 1], w[i + 1]);
|
||||
ROUND(g, h, a, b, c, d, e, f, rk[i + 2], w[i + 2]);
|
||||
ROUND(f, g, h, a, b, c, d, e, rk[i + 3], w[i + 3]);
|
||||
ROUND(e, f, g, h, a, b, c, d, rk[i + 4], w[i + 4]);
|
||||
ROUND(d, e, f, g, h, a, b, c, rk[i + 5], w[i + 5]);
|
||||
ROUND(c, d, e, f, g, h, a, b, rk[i + 6], w[i + 6]);
|
||||
ROUND(b, c, d, e, f, g, h, a, rk[i + 7], w[i + 7]);
|
||||
}
|
||||
|
||||
for (i = 16; i < 64; i += 8)
|
||||
{
|
||||
ROUND(a, b, c, d, e, f, g, h, rk[i], WW(i));
|
||||
ROUND(h, a, b, c, d, e, f, g, rk[i + 1], WW(i + 1));
|
||||
ROUND(g, h, a, b, c, d, e, f, rk[i + 2], WW(i + 2));
|
||||
ROUND(f, g, h, a, b, c, d, e, rk[i + 3], WW(i + 3));
|
||||
ROUND(e, f, g, h, a, b, c, d, rk[i + 4], WW(i + 4));
|
||||
ROUND(d, e, f, g, h, a, b, c, rk[i + 5], WW(i + 5));
|
||||
ROUND(c, d, e, f, g, h, a, b, rk[i + 6], WW(i + 6));
|
||||
ROUND(b, c, d, e, f, g, h, a, rk[i + 7], WW(i + 7));
|
||||
}
|
||||
|
||||
context->state[0] += a;
|
||||
context->state[1] += b;
|
||||
context->state[2] += c;
|
||||
context->state[3] += d;
|
||||
context->state[4] += e;
|
||||
context->state[5] += f;
|
||||
context->state[6] += g;
|
||||
context->state[7] += h;
|
||||
}
|
||||
|
||||
static void
|
||||
Sha256Process(Sha256Context * context, unsigned char *data, size_t length)
|
||||
{
|
||||
context->length += length;
|
||||
|
||||
if (context->bufLen && context->bufLen + length >= 64)
|
||||
{
|
||||
int len = 64 - context->bufLen;
|
||||
|
||||
memcpy(context->buffer + context->bufLen, data, len);
|
||||
Sha256Chunk(context, context->buffer);
|
||||
data += len;
|
||||
length -= len;
|
||||
context->bufLen = 0;
|
||||
}
|
||||
|
||||
while (length >= 64)
|
||||
{
|
||||
Sha256Chunk(context, data);
|
||||
data += 64;
|
||||
length -= 64;
|
||||
}
|
||||
|
||||
if (length)
|
||||
{
|
||||
memcpy(context->buffer + context->bufLen, data, length);
|
||||
context->bufLen += length;
|
||||
}
|
||||
}
|
||||
|
||||
char *
|
||||
Sha256(char *str)
|
||||
{
|
||||
Sha256Context context;
|
||||
size_t i;
|
||||
unsigned char out[32];
|
||||
char *outStr;
|
||||
|
||||
char fill[64];
|
||||
uint32_t fillLen;
|
||||
unsigned char buf[8];
|
||||
uint32_t hiLen;
|
||||
uint32_t loLen;
|
||||
|
||||
if (!str)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
outStr = Malloc(65);
|
||||
if (!outStr)
|
||||
{
|
||||
return NULL;
|
||||
}
|
||||
|
||||
context.state[0] = 0x6a09e667;
|
||||
context.state[1] = 0xbb67ae85;
|
||||
context.state[2] = 0x3c6ef372;
|
||||
context.state[3] = 0xa54ff53a;
|
||||
context.state[4] = 0x510e527f;
|
||||
context.state[5] = 0x9b05688c;
|
||||
context.state[6] = 0x1f83d9ab;
|
||||
context.state[7] = 0x5be0cd19;
|
||||
|
||||
context.bufLen = 0;
|
||||
context.length = 0;
|
||||
memset(context.buffer, 0, 64);
|
||||
|
||||
Sha256Process(&context, (unsigned char *) str, strlen(str));
|
||||
|
||||
memset(fill, 0, 64);
|
||||
fill[0] = 0x80;
|
||||
|
||||
fillLen = (context.bufLen < 56) ? 56 - context.bufLen : 120 - context.bufLen;
|
||||
hiLen = (unsigned long) (context.length >> 29);
|
||||
loLen = (unsigned long) (context.length << 3);
|
||||
|
||||
PUT_UINT32(&buf[0], hiLen);
|
||||
PUT_UINT32(&buf[4], loLen);
|
||||
|
||||
Sha256Process(&context, (unsigned char *) fill, fillLen);
|
||||
Sha256Process(&context, buf, 8);
|
||||
|
||||
for (i = 0; i < 8; i++)
|
||||
{
|
||||
PUT_UINT32(&out[4 * i], context.state[i]);
|
||||
}
|
||||
|
||||
/* Convert to string */
|
||||
for (i = 0; i < 32; i++)
|
||||
{
|
||||
sprintf(outStr + (2 * i), "%02x", out[i]);
|
||||
}
|
||||
|
||||
return outStr;
|
||||
}
|
||||
31
src/include/Sha2.h
Normal file
31
src/include/Sha2.h
Normal file
|
|
@ -0,0 +1,31 @@
|
|||
/*
|
||||
* Copyright (C) 2022 Jordan Bancino <@jordan:bancino.net>
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person
|
||||
* obtaining a copy of this software and associated documentation files
|
||||
* (the "Software"), to deal in the Software without restriction,
|
||||
* including without limitation the rights to use, copy, modify, merge,
|
||||
* publish, distribute, sublicense, and/or sell copies of the Software,
|
||||
* and to permit persons to whom the Software is furnished to do so,
|
||||
* subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be
|
||||
* included in all copies or portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
||||
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
||||
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
||||
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
||||
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
||||
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
||||
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
* SOFTWARE.
|
||||
*/
|
||||
|
||||
#ifndef TELODENDRIA_SHA2_H
|
||||
#define TELODENDRIA_SHA2_H
|
||||
|
||||
extern char *
|
||||
Sha256(char *);
|
||||
|
||||
#endif /* TELODENDRIA_SHA2_H */
|
||||
Loading…
Reference in a new issue