I have some code written in java which I want to convert to JavaScript.
String nonceBase64Encoded = "+8GorZIWoF7mnZ2/M86/eA==";
byte[] decodednoncebytes = Base64.getDecoder().decode(nonceBase64Encoded);
About this decode():
Decodes a Base64 encoded String into a newly-allocated byte arrayusing the Base64 encoding scheme.
An invocation of this method has exactly the same effect as invoking decode(src.getBytes(StandardCharsets.ISO_8859_1))
The atob() function decodes a string of data which has been encoded using Base64 encoding. read more
example:
var decodedData = atob(encodedData);
The btoa() method creates a Base64-encoded ASCII string from a binary string (i.e., a String object in which each character in the string is treated as a byte of binary data). read more
example:
var encodedData = btoa(stringToEncode);
And if you want to convert strings into array of bytes then TextEncoder can be used:
new TextEncoder().encode(str)
Alternatively this function could be used:
function stringToByteArray(s){
// Otherwise, fall back to 7-bit ASCII only
var result = new Uint8Array(s.length);
for (var i=0; i<s.length; i++){
result[i] = s.charCodeAt(i);/* w ww. ja v a 2s . co m*/
}
return result;
}