feat: 加密AES包和ssh连接包

src/framework/utils/crypto/aes.go

@@ -0,0 +1,88 @@
+package crypto
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+	"encoding/base64"
+	"fmt"
+	"io"
+)
+
+// aesKey 字符串AES加解密密钥
+const aesKey = "AGT66VfY4SMaiT97"
+
+// StringEncryptByAES 字符串AES加密
+func StringEncryptByAES(text string) (string, error) {
+	if len(text) == 0 {
+		return "", nil
+	}
+	pass := []byte(text)
+	xpass, err := aesEncryptWithSalt([]byte(aesKey), pass)
+	if err == nil {
+		pass64 := base64.StdEncoding.EncodeToString(xpass)
+		return pass64, err
+	}
+	return "", err
+}
+
+// StringDecryptByAES 字符串AES解密
+func StringDecryptByAES(text string) (string, error) {
+	if len(text) == 0 {
+		return "", nil
+	}
+	bytesPass, err := base64.StdEncoding.DecodeString(text)
+	if err != nil {
+		return "", err
+	}
+	var tpass []byte
+	tpass, err = aesDecryptWithSalt([]byte(aesKey), bytesPass)
+	if err == nil {
+		result := string(tpass[:])
+		return result, err
+	}
+	return "", err
+}
+
+// aesEncryptWithSalt AES加密
+func aesEncryptWithSalt(key, plaintext []byte) ([]byte, error) {
+	blockSize := aes.BlockSize
+	padding := blockSize - len(plaintext)%blockSize
+	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
+	plaintext = append(plaintext, padtext...)
+
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	ciphertext := make([]byte, blockSize+len(plaintext))
+	iv := ciphertext[0:blockSize]
+	if _, err := io.ReadFull(rand.Reader, iv); err != nil {
+		return nil, err
+	}
+	cbc := cipher.NewCBCEncrypter(block, iv)
+	cbc.CryptBlocks(ciphertext[blockSize:], plaintext)
+	return ciphertext, nil
+}
+
+// aesDecryptWithSalt AES解密
+func aesDecryptWithSalt(key, ciphertext []byte) ([]byte, error) {
+	blockSize := aes.BlockSize
+	var block cipher.Block
+	block, err := aes.NewCipher(key)
+	if err != nil {
+		return nil, err
+	}
+	if len(ciphertext) < blockSize {
+		return nil, fmt.Errorf("iciphertext too short")
+	}
+	iv := ciphertext[:blockSize]
+	ciphertext = ciphertext[blockSize:]
+	cbc := cipher.NewCBCDecrypter(block, iv)
+	cbc.CryptBlocks(ciphertext, ciphertext)
+	length := len(ciphertext)
+	unpadding := int(ciphertext[len(ciphertext)-1])
+	ciphertext = ciphertext[:(length - unpadding)]
+	return ciphertext, nil
+}