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master
tools/security/encrypt.go
62 строки
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Gani Georgiev
updated security.Encrypt and security.Decrypt docs
17 мар 2024, 16:42
17 мар 2024, 16:42
be40803
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package security import ( "crypto/aes" "crypto/cipher" crand "crypto/rand" "encoding/base64" "io" ) // Encrypt encrypts "data" with the specified "key" (must be valid 32 char AES key). // // This method uses AES-256-GCM block cypher mode. func Encrypt(data []byte, key string) (string, error) { block, err := aes.NewCipher([]byte(key)) if err != nil { return "", err } gcm, err := cipher.NewGCM(block) if err != nil { return "", err } nonce := make([]byte, gcm.NonceSize()) // populates the nonce with a cryptographically secure random sequence if _, err := io.ReadFull(crand.Reader, nonce); err != nil { return "", err } cipherByte := gcm.Seal(nonce, nonce, data, nil) result := base64.StdEncoding.EncodeToString(cipherByte) return result, nil } // Decrypt decrypts encrypted text with key (must be valid 32 chars AES key). // // This method uses AES-256-GCM block cypher mode. func Decrypt(cipherText string, key string) ([]byte, error) { block, err := aes.NewCipher([]byte(key)) if err != nil { return nil, err } gcm, err := cipher.NewGCM(block) if err != nil { return nil, err } nonceSize := gcm.NonceSize() cipherByte, err := base64.StdEncoding.DecodeString(cipherText) if err != nil { return nil, err } nonce, cipherByteClean := cipherByte[:nonceSize], cipherByte[nonceSize:] return gcm.Open(nil, nonce, cipherByteClean, nil) }