Question

How to use Base64 to encode and decode a string in Swift

Answer 1

import Foundation

func base64Encode(_ str: String) -> String {
    let data = str.data(using: .utf8)!
    
    return data.base64EncodedString()
}
    
func base64Decode(_ encodeStr: String) -> String? {
    guard let data = Data(base64Encoded: encodeStr) else { return nil }
    
    return String(data: data, encoding: .ascii)
}
    
let base64EncodeStr = base64Encode("Swift programming")
print(base64EncodeStr)
        
if let decodedStr = base64Decode(base64EncodeStr) {
    print(decodedStr)
}



/*
run:

U3dpZnQgcHJvZ3JhbW1pbmc=
Swift programming

*/

 

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