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/**
* Creates Base64 String with SHA-256 Hash of given string
*/
String.prototype.getHash = async function() {
let data = new ArrayBuffer(this.length * 2);
let bufferView = new Uint16Array(data);
for (let i = 0; i < this.length; i++) {
bufferView[i] = this.charCodeAt(i);
}
let encrypted = await crypto.subtle.digest('SHA-256', bufferView);
let byteArray = new Uint8Array(encrypted);
let base64String = '';
for (let byte of byteArray) {
base64String += String.fromCharCode(byte);
}
return btoa(base64String);
};
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