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| ==Encoding data==
| | See [http://developer.mozilla.org/en/docs/Code_snippets:Miscellaneous#Simple_and_unsafe_encoding Code snippets: Miscellaneous - Simple and unsafe encoding] at [http://developer.mozilla.org MDC]. |
| This is a very simple and unsafe way to encode strings, which you can then send using [http://developer.mozilla.org/en/docs/XMLHttpRequest XMLHttpRequest] or store using [[Dev : Using preferences|preferences]].
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| The code contains to functions, encrypt and decrypt, and it simply subtracts and adds 23 to the character code. A=64, so the encoded character will be 87.
| | [[Category:Redirects]] |
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| This is not a safe way or anything close to a 128bit encryption, but if you want to stop someone from reading a password in the preferences then it is good.
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| | |
| <pre>
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| function encrypt(val) {
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| num_out = "";
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| if(val == ""){
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| return "";
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| }else {
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| str_in = escape(val);
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| for(i = 0; i < str_in.length; i++) {
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| num_out += str_in.charCodeAt(i) - 23;
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| }
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| return unescape(num_out);
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| }
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| }
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| | |
| function decrypt(val) {
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| str_out = "";
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| if(val == ""){
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| return "";
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| }else {
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| num_out = val;
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| for(i = 0; i < num_out.length; i += 2) {
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| num_in = parseInt(num_out.substr(i,[2])) + 23;
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| num_in = unescape('%' + num_in.toString(16));
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| str_out += num_in;
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| }
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| return str_out;
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| }
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| }
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| </pre>
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| | |
| ==Appendix==
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| [[Category:Example code]] | |
Latest revision as of 20:36, 23 May 2007