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Aug 19th, 2019
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  1. class EmailObfuscator {
  2. encodeEmail(email: string) {
  3. const key = this.getRandomCode(33, 330)
  4. let encodedString = key.toString(16)
  5.  
  6. Array.from(email).forEach(item => encodedString += (item.charCodeAt(0) ^ key).toString(16))
  7.  
  8. return encodedString
  9. }
  10.  
  11. decodeEmail(encodedString: string) {
  12. let email = ''
  13. const key = parseInt(encodedString.substr(0, 2), 16)
  14.  
  15. for (let n = 2; encodedString.length - n; n += 2) {
  16. const code = parseInt(encodedString.substr(n, 2), 16) ^ key
  17. email += String.fromCharCode(code)
  18. }
  19.  
  20. return email
  21. }
  22.  
  23. private getRandomCode(min: number, max: number) {
  24. return Math.floor(Math.random() * (max - min)) + min
  25. }
  26. }
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