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1trackprojects1/main.go

Forked from manishtpatel/main.go
Created April 17, 2022 15:30
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Revisions

  1. @manishtpatel manishtpatel revised this gist Jan 2, 2014. 1 changed file with 2 additions and 2 deletions.
    4 changes: 2 additions & 2 deletions main.go
    View file
    Original file line number Diff line number Diff line change
    @@ -46,12 +46,12 @@ func encrypt(key []byte, text string) string {
    stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)

    // convert to base64
    return base64.StdEncoding.EncodeToString(ciphertext)
    return base64.URLEncoding.EncodeToString(ciphertext)
    }

    // decrypt from base64 to decrypted string
    func decrypt(key []byte, cryptoText string) string {
    ciphertext, _ := base64.StdEncoding.DecodeString(cryptoText)
    ciphertext, _ := base64.URLEncoding.DecodeString(cryptoText)

    block, err := aes.NewCipher(key)
    if err != nil {
  2. @manishtpatel manishtpatel created this gist Jan 2, 2014.
    75 changes: 75 additions & 0 deletions main.go
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,75 @@
    package main

    import (
    "crypto/aes"
    "crypto/cipher"
    "crypto/rand"
    "encoding/base64"
    "fmt"
    "io"
    )

    func main() {
    originalText := "encrypt this golang"
    fmt.Println(originalText)

    key := []byte("example key 1234")

    // encrypt value to base64
    cryptoText := encrypt(key, originalText)
    fmt.Println(cryptoText)

    // encrypt base64 crypto to original value
    text := decrypt(key, cryptoText)
    fmt.Printf(text)
    }

    // encrypt string to base64 crypto using AES
    func encrypt(key []byte, text string) string {
    // key := []byte(keyText)
    plaintext := []byte(text)

    block, err := aes.NewCipher(key)
    if err != nil {
    panic(err)
    }

    // The IV needs to be unique, but not secure. Therefore it's common to
    // include it at the beginning of the ciphertext.
    ciphertext := make([]byte, aes.BlockSize+len(plaintext))
    iv := ciphertext[:aes.BlockSize]
    if _, err := io.ReadFull(rand.Reader, iv); err != nil {
    panic(err)
    }

    stream := cipher.NewCFBEncrypter(block, iv)
    stream.XORKeyStream(ciphertext[aes.BlockSize:], plaintext)

    // convert to base64
    return base64.StdEncoding.EncodeToString(ciphertext)
    }

    // decrypt from base64 to decrypted string
    func decrypt(key []byte, cryptoText string) string {
    ciphertext, _ := base64.StdEncoding.DecodeString(cryptoText)

    block, err := aes.NewCipher(key)
    if err != nil {
    panic(err)
    }

    // The IV needs to be unique, but not secure. Therefore it's common to
    // include it at the beginning of the ciphertext.
    if len(ciphertext) < aes.BlockSize {
    panic("ciphertext too short")
    }
    iv := ciphertext[:aes.BlockSize]
    ciphertext = ciphertext[aes.BlockSize:]

    stream := cipher.NewCFBDecrypter(block, iv)

    // XORKeyStream can work in-place if the two arguments are the same.
    stream.XORKeyStream(ciphertext, ciphertext)

    return fmt.Sprintf("%s", ciphertext)
    }