arno/hashcat
1
0
Fork 0
mirror of https://github.com/hashcat/hashcat.git synced 2024-12-26 16:38:35 +00:00
Code Issues Releases Wiki Activity
fbea72ebd6
hashcat/src/convert.c
jsteube a673aee037 Very hot commit, continue reading here: 
This is a test commit using buffers large enough to handle both passwords and salts up to length 256.
It requires changes to the kernel code, which is not included in here.
It also requires some of the host code to be modified. Before we're going to modify kernel code to support the larger lengths I want to be
sure of:
1. Host code modification is ok (no overflows or underflows)
2. Passwords and Salts are printed correctly to status, outfile, show, left, etc.
3. Performance does not change (or only very minimal)
This is not a patch that supports actual cracking both passwords and salts up to length 256, but it can not fail anyway.
If if it does, there's no reason to continue to add support for both passwords and salts up to length 256.
2017-06-17 17:57:30 +02:00

634 lines
18 KiB
C
Raw Blame History

/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "convert.h"
#if (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__) >= 70101
#define FALLTHROUGH __attribute__ ((fallthrough))
#else
#define FALLTHROUGH
#endif
static bool printable_utf8 (const u8 *buf, const int len)
{
u8 a;
int length;
const u8 *buf_end = buf + len;
const u8 *srcptr;
const char trailingBytesUTF8[64] = {
1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5
};
while (buf < buf_end) {
// This line rejects unprintables. The rest of the function
// reliably rejects invalid UTF-8 sequences.
if (*buf < 0x20 || *buf == 0x7f) return false;
if (*buf < 0x80) {
buf++;
continue;
}
length = trailingBytesUTF8[*buf & 0x3f] + 1;
srcptr = buf + length;
if (srcptr > buf_end) return false;
switch (length) {
default:
return false;
case 4:
if ((a = (*--srcptr)) < 0x80 || a > 0xbf) return false; FALLTHROUGH;
case 3:
if ((a = (*--srcptr)) < 0x80 || a > 0xbf) return false; FALLTHROUGH;
case 2:
if ((a = (*--srcptr)) < 0x80 || a > 0xbf) return false;
switch (*buf) {
case 0xE0: if (a < 0xa0) return false; break;
case 0xED: if (a > 0x9f) return false; break;
case 0xF0: if (a < 0x90) return false; break;
case 0xF4: if (a > 0x8f) return false; FALLTHROUGH;
}
case 1:
if (*buf >= 0x80 && *buf < 0xc2) return false;
}
if (*buf > 0xf4)
return false;
buf += length;
}
return true;
}
static bool printable_ascii (const u8 *buf, const int len)
{
for (int i = 0; i < len; i++)
{
const u8 c = buf[i];
if (c < 0x20) return false;
if (c > 0x7e) return false;
}
return true;
}
static bool matches_separator (const u8 *buf, const int len, const char separator)
{
for (int i = 0; i < len; i++)
{
const char c = (char) buf[i];
if (c == separator) return true;
}
return false;
}
bool is_hexify (const u8 *buf, const int len)
{
if (len < 6) return false; // $HEX[] = 6
if (buf[0] != '$') return (false);
if (buf[1] != 'H') return (false);
if (buf[2] != 'E') return (false);
if (buf[3] != 'X') return (false);
if (buf[4] != '[') return (false);
if (buf[len - 1] != ']') return (false);
if (is_valid_hex_string (buf + 5, len - 6) == false) return false;
return true;
}
int exec_unhexify (const u8 *in_buf, const int in_len, u8 *out_buf, const int out_sz)
{
int i, j;
for (i = 0, j = 5; j < in_len - 1; i += 1, j += 2)
{
const u8 c = hex_to_u8 (&in_buf[j]);
out_buf[i] = c;
}
memset (out_buf + i, 0, out_sz - i);
return (i);
}
bool need_hexify (const u8 *buf, const int len, const char separator, bool always_ascii)
{
bool rc = false;
if (always_ascii == true)
{
if (printable_ascii (buf, len) == false)
{
rc = true;
}
}
else
{
if (printable_utf8 (buf, len) == false)
{
rc = true;
}
}
if (rc == false)
{
if (matches_separator (buf, len, separator) == true)
{
rc = true;
}
}
return rc;
}
void exec_hexify (const u8 *buf, const int len, u8 *out)
{
const int max_len = (len >= PW_MAX) ? PW_MAX : len;
for (int i = max_len - 1, j = i * 2; i >= 0; i -= 1, j -= 2)
{
u8_to_hex_lower (buf[i], out + j);
}
out[max_len * 2] = 0;
}
bool is_valid_hex_string (const u8 *s, const int len)
{
for (int i = 0; i < len; i++)
{
const u8 c = s[i];
if (is_valid_hex_char (c) == false) return false;
}
return true;
}
bool is_valid_hex_char (const u8 c)
{
if ((c >= '0') && (c <= '9')) return true;
if ((c >= 'A') && (c <= 'F')) return true;
if ((c >= 'a') && (c <= 'f')) return true;
return false;
}
u8 hex_convert (const u8 c)
{
return (c & 15) + (c >> 6) * 9;
}
u8 hex_to_u8 (const u8 hex[2])
{
u8 v = 0;
v |= ((u8) hex_convert (hex[1]) << 0);
v |= ((u8) hex_convert (hex[0]) << 4);
return (v);
}
u32 hex_to_u32 (const u8 hex[8])
{
u32 v = 0;
v |= ((u32) hex_convert (hex[1]) << 0);
v |= ((u32) hex_convert (hex[0]) << 4);
v |= ((u32) hex_convert (hex[3]) << 8);
v |= ((u32) hex_convert (hex[2]) << 12);
v |= ((u32) hex_convert (hex[5]) << 16);
v |= ((u32) hex_convert (hex[4]) << 20);
v |= ((u32) hex_convert (hex[7]) << 24);
v |= ((u32) hex_convert (hex[6]) << 28);
return (v);
}
u64 hex_to_u64 (const u8 hex[16])
{
u64 v = 0;
v |= ((u64) hex_convert (hex[ 1]) << 0);
v |= ((u64) hex_convert (hex[ 0]) << 4);
v |= ((u64) hex_convert (hex[ 3]) << 8);
v |= ((u64) hex_convert (hex[ 2]) << 12);
v |= ((u64) hex_convert (hex[ 5]) << 16);
v |= ((u64) hex_convert (hex[ 4]) << 20);
v |= ((u64) hex_convert (hex[ 7]) << 24);
v |= ((u64) hex_convert (hex[ 6]) << 28);
v |= ((u64) hex_convert (hex[ 9]) << 32);
v |= ((u64) hex_convert (hex[ 8]) << 36);
v |= ((u64) hex_convert (hex[11]) << 40);
v |= ((u64) hex_convert (hex[10]) << 44);
v |= ((u64) hex_convert (hex[13]) << 48);
v |= ((u64) hex_convert (hex[12]) << 52);
v |= ((u64) hex_convert (hex[15]) << 56);
v |= ((u64) hex_convert (hex[14]) << 60);
return (v);
}
void u8_to_hex_lower (const u8 v, u8 hex[2])
{
const u8 tbl[0x10] =
{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f',
};
hex[1] = tbl[v >> 0 & 15];
hex[0] = tbl[v >> 4 & 15];
}
void u32_to_hex_lower (const u32 v, u8 hex[8])
{
const u8 tbl[0x10] =
{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f',
};
hex[1] = tbl[v >> 0 & 15];
hex[0] = tbl[v >> 4 & 15];
hex[3] = tbl[v >> 8 & 15];
hex[2] = tbl[v >> 12 & 15];
hex[5] = tbl[v >> 16 & 15];
hex[4] = tbl[v >> 20 & 15];
hex[7] = tbl[v >> 24 & 15];
hex[6] = tbl[v >> 28 & 15];
}
void u64_to_hex_lower (const u64 v, u8 hex[16])
{
const u8 tbl[0x10] =
{
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
'a', 'b', 'c', 'd', 'e', 'f',
};
hex[ 1] = tbl[v >> 0 & 15];
hex[ 0] = tbl[v >> 4 & 15];
hex[ 3] = tbl[v >> 8 & 15];
hex[ 2] = tbl[v >> 12 & 15];
hex[ 5] = tbl[v >> 16 & 15];
hex[ 4] = tbl[v >> 20 & 15];
hex[ 7] = tbl[v >> 24 & 15];
hex[ 6] = tbl[v >> 28 & 15];
hex[ 9] = tbl[v >> 32 & 15];
hex[ 8] = tbl[v >> 36 & 15];
hex[11] = tbl[v >> 40 & 15];
hex[10] = tbl[v >> 44 & 15];
hex[13] = tbl[v >> 48 & 15];
hex[12] = tbl[v >> 52 & 15];
hex[15] = tbl[v >> 56 & 15];
hex[14] = tbl[v >> 60 & 15];
}
u8 int_to_base32 (const u8 c)
{
const u8 tbl[0x20] =
{
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37,
};
return tbl[c];
}
u8 base32_to_int (const u8 c)
{
if ((c >= 'A') && (c <= 'Z')) return c - 'A';
else if ((c >= '2') && (c <= '7')) return c - '2' + 26;
return 0;
}
u8 int_to_itoa32 (const u8 c)
{
const u8 tbl[0x20] =
{
0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
};
return tbl[c];
}
u8 itoa32_to_int (const u8 c)
{
if ((c >= '0') && (c <= '9')) return c - '0';
else if ((c >= 'a') && (c <= 'v')) return c - 'a' + 10;
return 0;
}
u8 int_to_itoa64 (const u8 c)
{
const u8 tbl[0x40] =
{
0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54,
0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a,
};
return tbl[c];
}
u8 itoa64_to_int (const u8 c)
{
const u8 tbl[0x100] =
{
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21,
0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31,
0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a,
0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a,
0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x20, 0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14,
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x01, 0x02, 0x03, 0x04,
0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10, 0x11, 0x12, 0x13, 0x14,
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24,
0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x01, 0x02, 0x03, 0x04,
};
return tbl[c];
}
u8 int_to_base64 (const u8 c)
{
const u8 tbl[0x40] =
{
0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50,
0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76,
0x77, 0x78, 0x79, 0x7a, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2b, 0x2f,
};
return tbl[c];
}
u8 base64_to_int (const u8 c)
{
const u8 tbl[0x100] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3e, 0x00, 0x00, 0x00, 0x3f,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
return tbl[c];
}
u8 int_to_bf64 (const u8 c)
{
const u8 tbl[0x40] =
{
0x2e, 0x2f, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x61, 0x62, 0x63, 0x64,
0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74,
0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39,
};
return tbl[c];
}
u8 bf64_to_int (const u8 c)
{
const u8 tbl[0x100] =
{
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
return tbl[c];
}
u8 int_to_lotus64 (const u8 c)
{
if (c < 10) return '0' + c;
else if (c < 36) return 'A' + c - 10;
else if (c < 62) return 'a' + c - 36;
else if (c == 62) return '+';
else if (c == 63) return '/';
return 0;
}
u8 lotus64_to_int (const u8 c)
{
if ((c >= '0') && (c <= '9')) return c - '0';
else if ((c >= 'A') && (c <= 'Z')) return c - 'A' + 10;
else if ((c >= 'a') && (c <= 'z')) return c - 'a' + 36;
else if (c == '+') return 62;
else if (c == '/') return 63;
else
return 0;
}
int base32_decode (u8 (*f) (const u8), const u8 *in_buf, int in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (int i = 0; i < in_len; i += 8)
{
const u8 out_val0 = f (in_ptr[0] & 0x7f);
const u8 out_val1 = f (in_ptr[1] & 0x7f);
const u8 out_val2 = f (in_ptr[2] & 0x7f);
const u8 out_val3 = f (in_ptr[3] & 0x7f);
const u8 out_val4 = f (in_ptr[4] & 0x7f);
const u8 out_val5 = f (in_ptr[5] & 0x7f);
const u8 out_val6 = f (in_ptr[6] & 0x7f);
const u8 out_val7 = f (in_ptr[7] & 0x7f);
out_ptr[0] = ((out_val0 << 3) & 0xf8) | ((out_val1 >> 2) & 0x07);
out_ptr[1] = ((out_val1 << 6) & 0xc0) | ((out_val2 << 1) & 0x3e) | ((out_val3 >> 4) & 0x01);
out_ptr[2] = ((out_val3 << 4) & 0xf0) | ((out_val4 >> 1) & 0x0f);
out_ptr[3] = ((out_val4 << 7) & 0x80) | ((out_val5 << 2) & 0x7c) | ((out_val6 >> 3) & 0x03);
out_ptr[4] = ((out_val6 << 5) & 0xe0) | ((out_val7 >> 0) & 0x1f);
in_ptr += 8;
out_ptr += 5;
}
for (int i = 0; i < in_len; i++)
{
if (in_buf[i] != '=') continue;
in_len = i;
}
int out_len = (in_len * 5) / 8;
return out_len;
}
int base32_encode (u8 (*f) (const u8), const u8 *in_buf, int in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (int i = 0; i < in_len; i += 5)
{
const u8 out_val0 = f ( ((in_ptr[0] >> 3) & 0x1f));
const u8 out_val1 = f (((in_ptr[0] << 2) & 0x1c) | ((in_ptr[1] >> 6) & 0x03));
const u8 out_val2 = f ( ((in_ptr[1] >> 1) & 0x1f));
const u8 out_val3 = f (((in_ptr[1] << 4) & 0x10) | ((in_ptr[2] >> 4) & 0x0f));
const u8 out_val4 = f (((in_ptr[2] << 1) & 0x1e) | ((in_ptr[3] >> 7) & 0x01));
const u8 out_val5 = f ( ((in_ptr[3] >> 2) & 0x1f));
const u8 out_val6 = f (((in_ptr[3] << 3) & 0x18) | ((in_ptr[4] >> 5) & 0x07));
const u8 out_val7 = f ( ((in_ptr[4] >> 0) & 0x1f));
out_ptr[0] = out_val0 & 0x7f;
out_ptr[1] = out_val1 & 0x7f;
out_ptr[2] = out_val2 & 0x7f;
out_ptr[3] = out_val3 & 0x7f;
out_ptr[4] = out_val4 & 0x7f;
out_ptr[5] = out_val5 & 0x7f;
out_ptr[6] = out_val6 & 0x7f;
out_ptr[7] = out_val7 & 0x7f;
in_ptr += 5;
out_ptr += 8;
}
int out_len = (int) (((0.5 + in_len) * 8) / 5); // ceil (in_len * 8 / 5)
while (out_len % 8)
{
out_buf[out_len] = '=';
out_len++;
}
return out_len;
}
int base64_decode (u8 (*f) (const u8), const u8 *in_buf, int in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (int i = 0; i < in_len; i += 4)
{
const u8 out_val0 = f (in_ptr[0] & 0x7f);
const u8 out_val1 = f (in_ptr[1] & 0x7f);
const u8 out_val2 = f (in_ptr[2] & 0x7f);
const u8 out_val3 = f (in_ptr[3] & 0x7f);
out_ptr[0] = ((out_val0 << 2) & 0xfc) | ((out_val1 >> 4) & 0x03);
out_ptr[1] = ((out_val1 << 4) & 0xf0) | ((out_val2 >> 2) & 0x0f);
out_ptr[2] = ((out_val2 << 6) & 0xc0) | ((out_val3 >> 0) & 0x3f);
in_ptr += 4;
out_ptr += 3;
}
for (int i = 0; i < in_len; i++)
{
if (in_buf[i] != '=') continue;
in_len = i;
}
int out_len = (in_len * 6) / 8;
return out_len;
}
int base64_encode (u8 (*f) (const u8), const u8 *in_buf, int in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (int i = 0; i < in_len; i += 3)
{
const u8 out_val0 = f ( ((in_ptr[0] >> 2) & 0x3f));
const u8 out_val1 = f (((in_ptr[0] << 4) & 0x30) | ((in_ptr[1] >> 4) & 0x0f));
const u8 out_val2 = f (((in_ptr[1] << 2) & 0x3c) | ((in_ptr[2] >> 6) & 0x03));
const u8 out_val3 = f ( ((in_ptr[2] >> 0) & 0x3f));
out_ptr[0] = out_val0 & 0x7f;
out_ptr[1] = out_val1 & 0x7f;
out_ptr[2] = out_val2 & 0x7f;
out_ptr[3] = out_val3 & 0x7f;
in_ptr += 3;
out_ptr += 4;
}
int out_len = (int) (((0.5 + in_len) * 8) / 6); // ceil (in_len * 8 / 6)
while (out_len % 4)
{
out_buf[out_len] = '=';
out_len++;
}
return out_len;
}
void lowercase (u8 *buf, int len)
{
for (int i = 0; i < len; i++) buf[i] = tolower (buf[i]);
}
void uppercase (u8 *buf, int len)
{
for (int i = 0; i < len; i++) buf[i] = toupper (buf[i]);
}
Reference in New Issue View Git Blame Copy Permalink