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Author: javascript-2020

blog/25-12-19/diffie-hellman/ex/tiny-encrypt.js

@@ -0,0 +1,15 @@
+```
+
+        var tiny        = {};        
+        tiny.encrypt    = (message,key)=>btoa([...message].reduce((a,c,i)=>a+tiny.xor(c,key,i),''));
+        tiny.decrypt    = (encrypted,key)=>[...atob(encrypted)].reduce((a,e,i)=>a+tiny.xor(e,key,i),'');
+        tiny.xor        = (c,key,i)=>tiny.char(tiny.code(c)^tiny.code(key[i%key.length]));
+        tiny.code       = v=>v.charCodeAt(0);
+        tiny.char       = v=>String.fromCharCode(v);        
+        
+        var encrypted   = tiny.encrypt('helloworld','sky')
+        console.log(encrypted);      
+        var decrypted   = tiny.decrypt(encrypted,'sky');
+        console.log(decrypted);
+
+```