Question

How to encode and decode a string to base64 in Swift

Answer 1

import Foundation

func base64Encode(_ str: String) -> String {
    let data = str.data(using: .utf8)!
    
    return data.base64EncodedString()
}

func base64Decode(_ encodedStr: String) -> String {
    guard let data = Data(base64Encoded: encodedStr),
          let decodedStr = String(data: data, encoding: .ascii) else {
        return "Decoding failed"
    }
    
    return decodedStr
}

let base64EncodedStr = base64Encode("swift programming")
print(base64EncodedStr)

let decodedStr = base64Decode(base64EncodedStr)
print(decodedStr)



/*
run:
   
c3dpZnQgcHJvZ3JhbW1pbmc=
swift programming

*/

 

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