nilsteampassnet /
TeamPass
| @@ 174-186 (lines=13) @@ | ||
| 171 | ||
| 172 | if ($this->operation() == parent::ENCRYPT) |
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| 173 | { |
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| 174 | for ($i = 0; $i < 4; ++$i) |
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| 175 | { |
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| 176 | if ($i == 0 || $i == 2) |
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| 177 | { |
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| 178 | $pos = $right ^ $this->str2Dec($key[$i]); |
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| 179 | $left = $left ^ self::$_f[$pos]; |
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| 180 | } else |
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| 181 | { |
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| 182 | $pos = $left ^ $this->str2Dec($key[$i]); |
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| 183 | $right = $right ^ self::$_f[$pos]; |
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| 184 | } |
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| 185 | } |
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| 186 | } else // parent::DECRYPT |
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| 187 | { |
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| 188 | // we do the same as in encryption, but apply the key backwards, |
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| 189 | // from key[3] to key[0] |
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| @@ 190-202 (lines=13) @@ | ||
| 187 | { |
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| 188 | // we do the same as in encryption, but apply the key backwards, |
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| 189 | // from key[3] to key[0] |
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| 190 | for ($i = 3; $i >= 0; --$i) |
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| 191 | { |
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| 192 | if ($i == 0 || $i == 2) |
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| 193 | { |
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| 194 | $pos = $right ^ $this->str2Dec($key[$i]); |
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| 195 | $left = $left ^ self::$_f[$pos]; |
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| 196 | } else |
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| 197 | { |
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| 198 | $pos = $left ^ $this->str2Dec($key[$i]); |
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| 199 | $right = $right ^ self::$_f[$pos]; |
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| 200 | } |
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| 201 | } |
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| 202 | } |
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| 203 | ||
| 204 | return $this->dec2Str($left).$this->dec2Str($right); |
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| 205 | } |
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