renjue
76ba500417
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OpenAI-compatible AI gateway with Vue admin UI, multi-provider egress, ingress key governance, monitoring, and security controls. Co-authored-by: Cursor <cursoragent@cursor.com>
75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
package auth
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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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"crypto/sha256"
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"encoding/base64"
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"errors"
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"fmt"
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"io"
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)
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func deriveKey(secret string) []byte {
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h := sha256.Sum256([]byte(secret))
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return h[:]
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}
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func Encrypt(plaintext, secret string) (string, error) {
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key := deriveKey(secret)
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block, err := aes.NewCipher(key)
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if err != nil {
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return "", err
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}
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gcm, 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, gcm.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 := gcm.Seal(nonce, nonce, []byte(plaintext), nil)
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return base64.StdEncoding.EncodeToString(ciphertext), nil
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}
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func Decrypt(encoded, secret string) (string, error) {
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data, err := base64.StdEncoding.DecodeString(encoded)
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if err != nil {
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return "", err
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}
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key := deriveKey(secret)
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block, err := aes.NewCipher(key)
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if err != nil {
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return "", err
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}
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gcm, 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 := gcm.NonceSize()
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if len(data) < nonceSize {
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return "", errors.New("ciphertext too short")
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}
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nonce, ciphertext := data[:nonceSize], data[nonceSize:]
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plain, err := gcm.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(plain), nil
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}
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func HashToken(token string) string {
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h := sha256.Sum256([]byte(token))
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return fmt.Sprintf("%x", h)
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}
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func GenerateToken(n int) (string, error) {
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b := make([]byte, n)
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if _, err := rand.Read(b); err != nil {
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return "", err
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}
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return base64.URLEncoding.EncodeToString(b)[:n], nil
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}
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