/ *
* Byte transcoding
* First need to Grade array system (an ArrayBuffer)
* before converting the character code corresponding to
* distal common encoding:
* Base64: is converted to a binary string, bytes per 6 into a particular string (a-Za-z0-9 / + =).
* Hex: binary 8-byte hexadecimal into two corresponding string
* * /
// UTF8 into Base64 / hex
the let Buffer.from Output = ( 'UTF8 string', 'utf8 ')
the console.log (output.toString (' Base64 '))
the console.log (output.toString (' hex '))
// Base64 / hex Switch UTF8
Output = Buffer.from (' 75746638e79a84e5ad97e7aca6e4b8b2 ',' hex ')
the console.log (output.toString ( 'UTF8'))
Output = Buffer.from ( '+ espuS4sg dXRmOOeahOWtl ==', 'Base64')
the console.log (output.toString ( 'UTF8'))
// read the file transfer encoding the
input = fs.readFileSync ( 'test.
console.
console.log(input)
input = fs.readFileSync('test.txt', 'base64')
console.log(input)
input = fs.readFileSync('test.txt', 'hex')
console.log(input)
/ *
* It should be noted encryption
Encrypted Data Type: Buffer or string (hex / Base64 / UTF8)
* argument to parameter: vi - filled
* parameters into parameters: mode - Mode
* parameters into parameters: padding - filling type
encryption type * output: Buffer or string (hex / Base64 / UTF8)
* * /