mirror of https://github.com/qwqdanchun/fscan.git
74 lines
2.0 KiB
Go
74 lines
2.0 KiB
Go
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package lib
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import (
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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"crypto/rand"
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"encoding/base64"
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"io"
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uuid "github.com/satori/go.uuid"
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)
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var (
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CheckContent = "rO0ABXNyADJvcmcuYXBhY2hlLnNoaXJvLnN1YmplY3QuU2ltcGxlUHJpbmNpcGFsQ29sbGVjdGlvbqh/WCXGowhKAwABTAAPcmVhbG1QcmluY2lwYWxzdAAPTGphdmEvdXRpbC9NYXA7eHBwdwEAeA=="
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Content, _ = base64.StdEncoding.DecodeString(CheckContent)
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)
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func Padding(plainText []byte, blockSize int) []byte {
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//计算要填充的长度
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n := (blockSize - len(plainText)%blockSize)
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//对原来的明文填充n个n
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temp := bytes.Repeat([]byte{byte(n)}, n)
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plainText = append(plainText, temp...)
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return plainText
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}
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func GetShrioCookie(key, mode string) string {
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if mode == "gcm" {
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return AES_GCM_Encrypt(key)
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} else {
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//cbc
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return AES_CBC_Encrypt(key)
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}
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}
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//AES CBC加密后的payload
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func AES_CBC_Encrypt(shirokey string) string {
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key, err := base64.StdEncoding.DecodeString(shirokey)
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if err != nil {
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return ""
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return ""
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}
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Content = Padding(Content, block.BlockSize())
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iv := uuid.NewV4().Bytes() //指定初始向量vi,长度和block的块尺寸一致
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blockMode := cipher.NewCBCEncrypter(block, iv) //指定CBC分组模式，返回一个BlockMode接口对象
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cipherText := make([]byte, len(Content))
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blockMode.CryptBlocks(cipherText, Content) //加密数据
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return base64.StdEncoding.EncodeToString(append(iv[:], cipherText[:]...))
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}
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//AES GCM 加密后的payload shiro 1.4.2版本更换为了AES-GCM加密方式
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func AES_GCM_Encrypt(shirokey string) string {
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key, err := base64.StdEncoding.DecodeString(shirokey)
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if err != nil {
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return ""
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}
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block, err := aes.NewCipher(key)
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if err != nil {
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return ""
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}
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nonce := make([]byte, 16)
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_, err = io.ReadFull(rand.Reader, nonce)
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if err != nil {
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return ""
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}
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aesgcm, _ := cipher.NewGCMWithNonceSize(block, 16)
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ciphertext := aesgcm.Seal(nil, nonce, Content, nil)
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return base64.StdEncoding.EncodeToString(append(nonce, ciphertext...))
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}
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