feat: 添加插件 crypter (#1191)

plugin/crypter/fumo.go

@@ -0,0 +1,94 @@
+// Package crypter Fumo语
+package crypter
+
+import (
+	"encoding/base64"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+// Base64字符表
+const base64Chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
+
+// Fumo语字符表 - 使用各种fumo变体来表示base64字符
+var fumoChars = []string{
+	"fumo-", "Fumo-", "fUmo-", "fuMo-", "fumO-", "FUmo-", "FuMo-", "FumO-",
+	"fUMo-", "fUmO-", "fuMO-", "FUMo-", "FUmO-", "fUMO-", "FUMO-", "fumo.",
+	"Fumo.", "fUmo.", "fuMo.", "fumO.", "FUmo.", "FuMo.", "FumO.", "fUMo.",
+	"fUmO.", "fuMO.", "FUMo.", "FUmO.", "fUMO.", "FUMO.", "fumo,", "Fumo,",
+	"fUmo,", "fuMo,", "fumO,", "FUmo,", "FuMo,", "FumO,", "fUMo,", "fUmO,",
+	"fuMO,", "FUMo,", "FuMO,", "fUMO,", "FUMO,", "fumo+", "Fumo+", "fUmo+",
+	"fuMo+", "fumO+", "FUmo+", "FuMo+", "FumO+", "fUMo+", "fUmO+", "fuMO+",
+	"FUMo+", "FUmO+", "fUMO+", "FUMO+", "fumo|", "Fumo|", "fUmo|", "fuMo|", 
+	"fumO|", "FUmo|", "FuMo|", "FumO|", "fUMo|", "fUmO|", "fuMO|", "fumo/", 
+	"Fumo/", "fUmo/",
+}
+
+//Base64 2 Fumo
+// 创建编码映射表
+var encodeMap = make(map[byte]string)
+// 创建解码映射表
+var decodeMap = make(map[string]byte)
+
+func init() {
+	for i := 0; i < 64 && i < len(fumoChars); i++ {
+		base64Char := base64Chars[i]
+		fumoChar := fumoChars[i]
+		
+		encodeMap[base64Char] = fumoChar
+		decodeMap[fumoChar] = base64Char
+	}
+}
+
+//加密
+func encryptFumo(text string) string {
+	if text == "" {
+		return "请输入要加密的文本"
+	}
+	textBytes := []byte(text)
+	base64String := base64.StdEncoding.EncodeToString(textBytes)
+	base64Body := strings.TrimRight(base64String, "=")
+	paddingCount := len(base64String) - len(base64Body)
+	var fumoBody strings.Builder
+	for _, char := range base64Body {
+		if fumoChar, exists := encodeMap[byte(char)]; exists {
+			fumoBody.WriteString(fumoChar)
+		} else {
+			return fmt.Sprintf("Fumo加密失败: 未知字符 %c", char)
+		}
+	}
+	result := fumoBody.String() + strings.Repeat("=", paddingCount)
+	
+	return result
+}
+
+//解密
+func decryptFumo(fumoText string) string {
+	if fumoText == "" {
+		return "请输入要解密的Fumo语密文"
+	}
+	fumoBody := strings.TrimRight(fumoText, "=")
+	paddingCount := len(fumoText) - len(fumoBody)
+	fumoPattern := regexp.MustCompile(`(\w+[-.,+|/])`)
+	fumoWords := fumoPattern.FindAllString(fumoBody, -1)
+	reconstructed := strings.Join(fumoWords, "")
+	if reconstructed != fumoBody {
+		return "Fumo解密失败: 包含无效的Fumo字符或格式错误"
+	}
+	var base64Body strings.Builder
+	for _, fumoWord := range fumoWords {
+		if base64Char, exists := decodeMap[fumoWord]; exists {
+			base64Body.WriteByte(base64Char)
+		} else {
+			return fmt.Sprintf("Fumo解密失败: 包含无效的Fumo字符 %s", fumoWord)
+		}
+	}
+	base64String := base64Body.String() + strings.Repeat("=", paddingCount)
+	decodedBytes, err := base64.StdEncoding.DecodeString(base64String)
+	if err != nil {
+		return fmt.Sprintf("Fumo解密失败: Base64解码错误 %v", err)
+	}
+	originalText := string(decodedBytes)
+	return originalText
+}