51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
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package crypter
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import (
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/hex"
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"io"
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)
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// Fonction pour crypter des données
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func Encrypt(plaintext string, key string) (string, error) {
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block, err := aes.NewCipher([]byte(key))
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if err != nil {
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return "", err
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}
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aesGCM, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonce := make([]byte, aesGCM.NonceSize())
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if _, err = io.ReadFull(rand.Reader, nonce); err != nil {
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return "", err
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}
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ciphertext := aesGCM.Seal(nonce, nonce, []byte(plaintext), nil)
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return hex.EncodeToString(ciphertext), nil
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}
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// Fonction pour décrypter des données
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func Decrypt(encryptedData string, key string) (string, error) {
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data, err := hex.DecodeString(encryptedData)
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if err != nil {
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return "", err
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}
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block, err := aes.NewCipher([]byte(key))
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if err != nil {
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return "", err
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}
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aesGCM, err := cipher.NewGCM(block)
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if err != nil {
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return "", err
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}
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nonceSize := aesGCM.NonceSize()
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nonce, ciphertext := data[:nonceSize], data[nonceSize:]
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plaintext, err := aesGCM.Open(nil, nonce, ciphertext, nil)
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if err != nil {
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return "", err
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}
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return string(plaintext), nil
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}
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