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hashcat/src/convert.c

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/**
* Author......: See docs/credits.txt
* License.....: MIT
*/
#include "common.h"
#include "types.h"
#include "convert.h"
/*
Source:
http://www.unicode.org/versions/Unicode7.0.0/UnicodeStandard-7.0.pdf
page 124, 3.9 "Unicode Encoding Forms", "UTF-8"
Table 3-7. Well-Formed UTF-8 Byte Sequences
-----------------------------------------------------------------------------
| Code Points | First Byte | Second Byte | Third Byte | Fourth Byte |
| U+0000..U+007F | 00..7F | | | |
| U+0080..U+07FF | C2..DF | 80..BF | | |
| U+0800..U+0FFF | E0 | A0..BF | 80..BF | |
| U+1000..U+CFFF | E1..EC | 80..BF | 80..BF | |
| U+D000..U+D7FF | ED | 80..9F | 80..BF | |
| U+E000..U+FFFF | EE..EF | 80..BF | 80..BF | |
| U+10000..U+3FFFF | F0 | 90..BF | 80..BF | 80..BF |
| U+40000..U+FFFFF | F1..F3 | 80..BF | 80..BF | 80..BF |
| U+100000..U+10FFFF | F4 | 80..8F | 80..BF | 80..BF |
-----------------------------------------------------------------------------
*/
static bool printable_utf8 (const u8 *buf, const size_t len)
{
// there's 9 different code point types for utf8 and ...
const int cp_types[256] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-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,
-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,
-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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 5, 5,
6, 7, 7, 7, 8, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
};
// ... they can be directly translated into a fixed length sequence of bytes
const size_t cp_lens[9] = { 1, 2, 3, 3, 3, 3, 4, 4, 4 };
for (size_t pos = 0; pos < len; pos++)
{
const u8 c0 = buf[pos];
const int cp_type = cp_types[c0];
if (cp_type == -1) return false;
// make sure to not read outside the buffer
const size_t cp_len = cp_lens[cp_type];
if ((pos + cp_len) > len) return false;
// multibyte from here
if (cp_len >= 2)
{
pos++;
const u8 c1 = buf[pos];
switch (cp_type)
{
case 2: if ((c1 < 0xa0) || (c1 > 0xbf)) return false; break;
case 4: if ((c1 < 0x80) || (c1 > 0x9f)) return false; break;
case 6: if ((c1 < 0x90) || (c1 > 0xbf)) return false; break;
case 8: if ((c1 < 0x80) || (c1 > 0x8f)) return false; break;
default: if ((c1 < 0x80) || (c1 > 0xbf)) return false; break;
}
for (size_t j = 2; j < cp_len; j++)
{
pos++;
const u8 cx = buf[pos];
if ((cx < 0x80) || (cx > 0xbf)) return false;
}
}
}
return true;
}
static bool printable_ascii (const u8 *buf, const size_t len)
{
for (size_t 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 size_t len, const char separator)
{
for (size_t 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 size_t len)
{
if (len < 6) return false; // $HEX[] = 6
// length of the hex string must be a multiple of 2
// and the length of "$HEX[]" is 6 (also an even length)
// Therefore the overall length must be an even number:
if ((len & 1) == 1) return false;
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;
}
size_t exec_unhexify (const u8 *in_buf, const size_t in_len, u8 *out_buf, const size_t out_sz)
{
size_t 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 size_t 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;
}
}
// also test if the password is of the format $HEX[]:
if (rc == false)
{
if (is_hexify (buf, len))
{
rc = true;
}
}
return rc;
}
void exec_hexify (const u8 *buf, const size_t len, u8 *out)
{
const size_t max_len = (len >= PW_MAX) ? PW_MAX : len;
for (int i = (int) 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 size_t len)
{
for (size_t 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 |= (hex_convert (hex[1]) << 0);
v |= (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';
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';
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_base64url (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, 0x2d, 0x5f,
};
return tbl[c];
}
u8 base64url_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, 0x3e, 0x00, 0x00,
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, 0x3f,
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;
if (c < 36) return 'A' + c - 10;
if (c < 62) return 'a' + c - 36;
if (c == 62) return '+';
if (c == 63) return '/';
return 0;
}
u8 lotus64_to_int (const u8 c)
{
if ((c >= '0') && (c <= '9')) return c - '0';
if ((c >= 'A') && (c <= 'Z')) return c - 'A' + 10;
if ((c >= 'a') && (c <= 'z')) return c - 'a' + 36;
if (c == '+') return 62;
if (c == '/') return 63;
return 0;
}
size_t base32_decode (u8 (*f) (const u8), const u8 *in_buf, const size_t in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (size_t 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;
}
size_t tmp_len = 0;
for (size_t i = 0; i < in_len; i++, tmp_len++)
{
if (in_buf[i] != '=') continue;
break;
}
size_t out_len = (tmp_len * 5) / 8;
return out_len;
}
size_t base32_encode (u8 (*f) (const u8), const u8 *in_buf, const size_t in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (size_t 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;
}
size_t base64_decode (u8 (*f) (const u8), const u8 *in_buf, const size_t in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (size_t 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;
}
size_t tmp_len = 0;
for (size_t i = 0; i < in_len; i++, tmp_len++)
{
if (in_buf[i] != '=') continue;
break;
}
size_t out_len = (tmp_len * 6) / 8;
return out_len;
}
size_t base64_encode (u8 (*f) (const u8), const u8 *in_buf, const size_t in_len, u8 *out_buf)
{
const u8 *in_ptr = in_buf;
u8 *out_ptr = out_buf;
for (size_t 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, const size_t len)
{
for (size_t i = 0; i < len; i++) buf[i] = (u8) tolower ((int) buf[i]);
}
void uppercase (u8 *buf, const size_t len)
{
for (size_t i = 0; i < len; i++) buf[i] = (u8) toupper ((int) buf[i]);
}
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