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libs/hashes.lua

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libs/hashes.lua @ 484:5e2978489c95

libs/hashes: Support for luaossl (lua-luaossl on Debian)
author Matthew Wild <mwild1@gmail.com>
date Thu, 23 Mar 2023 18:54:13 +0000
parent 443:89526c890363
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rev   line source
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1
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2 local function not_available(_, method_name)
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3 error("Hash method "..method_name.." not available", 2);
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4 end
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5
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6 local _M = setmetatable({}, { __index = not_available });
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7
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8 local function with(mod, f)
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9 local ok, pkg = pcall(require, mod);
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10 if ok then f(pkg); end
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11 end
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13 local function to_hex(data)
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14 return (data:gsub(".", function (c)
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15 return ("%02x"):format(c:byte());
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16 end));
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17 end
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18
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19 with("util.sha1", function (sha1)
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20 _M.sha1 = sha1.sha1;
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21 end);
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23 with("bgcrypto.md5", function (md5)
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24 _M.md5 = md5.digest;
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25 _M.hmac_md5 = md5.hmac.digest;
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26 end);
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27
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28 with("bgcrypto.sha1", function (sha1)
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29 _M.sha1 = sha1.digest;
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30 _M.hmac_sha1 = sha1.hmac.digest;
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31 _M.scram_Hi_sha1 = function (p, s, i) return sha1.pbkdf2(p, s, i, 20); end;
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32 end);
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34 with("bgcrypto.sha256", function (sha256)
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35 _M.sha256 = sha256.digest;
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36 _M.hmac_sha256 = sha256.hmac.digest;
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37 end);
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38
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39 with("bgcrypto.sha512", function (sha512)
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40 _M.sha512 = sha512.digest;
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41 _M.hmac_sha512 = sha512.hmac.digest;
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42 end);
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43
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44 with("sha1", function (sha1)
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45 _M.sha1 = function (data, hex)
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46 if hex then
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47 return sha1.sha1(data);
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48 else
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49 return (sha1.binary(data));
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50 end
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51 end;
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52 end);
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53
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54 with("openssl.digest", function (digest)
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55 local function make_digest_func(digest_name)
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56 return function (data, hex)
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57 local d = digest.new(digest_name):final(data);
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58 if hex then
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59 return to_hex(d);
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60 end
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61 return d;
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62 end;
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63 end
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64 _M.sha1 = make_digest_func("sha1");
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65 end);
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66
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67 return _M;