topfreegames/khan

package util

import (
    "encoding/base64"
    "fmt"

    "github.com/wildlife-studios/crypto"
)

//EncryptData is a func that use wildlife crypto module to cipher the data
// the key must have 32 bytes length
func EncryptData(data string, key []byte) (string, error) {
    if len(key) != 32 {
        return "", &TokenSizeError{Msg: "The key length is different than 32"}
    }

    xChacha := crypto.NewXChacha()
    encrypted, err := xChacha.Encrypt([]byte(data), key)
    if err != nil {
        return "", err
    }

    encoded := base64.StdEncoding.EncodeToString(encrypted)

    return encoded, nil
}

//DecryptData is a func that use wildlife crypto to decipher the data
// the key must have 32 bytes length
func DecryptData(encodedData string, key []byte) (string, error) {
    if len(key) != 32 {
        return "", &TokenSizeError{Msg: "The key length is different than 32"}
    }

    cipheredData, err := base64.StdEncoding.DecodeString(encodedData)
    if err != nil {
        return "", err
    }

    xChacha := crypto.NewXChacha()
    data, err := xChacha.Decrypt([]byte(cipheredData), key)
    if err != nil {
        return "", err
    }

    return fmt.Sprintf("%s", data), nil
}