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app/base58/page.tsx

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+"use client";
+
+import { useState } from "react";
+import { Binary, Copy, Trash2, ArrowUpDown } from "lucide-react";
+import { Button } from "@/components/ui/button";
+import { Textarea } from "@/components/ui/textarea";
+import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import { toast } from "sonner";
+
+// Base58 alphabet (Bitcoin style)
+const ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
+const ALPHABET_MAP = ALPHABET.split('').reduce((map, char, index) => {
+  map[char] = index;
+  return map;
+}, {} as { [key: string]: number });
+
+export default function Base58Page() {
+  const [input, setInput] = useState("");
+
+  const copyToClipboard = async (text: string) => {
+    if (!text) return;
+    try {
+      await navigator.clipboard.writeText(text);
+      toast.success("已复制到剪贴板");
+    } catch {
+      toast.error("复制失败");
+    }
+  };
+
+  // Helper: Text -> Bytes
+  const textToBytes = (text: string) => {
+    const encoder = new TextEncoder();
+    return encoder.encode(text);
+  };
+
+  // Helper: Bytes -> Text
+  const bytesToText = (bytes: Uint8Array) => {
+    const decoder = new TextDecoder();
+    return decoder.decode(bytes);
+  };
+
+  // Encode
+  const encode = () => {
+    if (!input) return;
+    const bytes = textToBytes(input);
+    if (bytes.length === 0) return "";
+    
+    let digits = [0];
+    for (let i = 0; i < bytes.length; i++) {
+        for (let j = 0; j < digits.length; j++) digits[j] <<= 8;
+        digits[0] += bytes[i];
+        let carry = 0;
+        for (let j = 0; j < digits.length; ++j) {
+            digits[j] += carry;
+            carry = (digits[j] / 58) | 0;
+            digits[j] %= 58;
+        }
+        while (carry) {
+            digits.push(carry % 58);
+            carry = (carry / 58) | 0;
+        }
+    }
+    
+    // Deal with leading zeros
+    for (let i = 0; i < bytes.length && bytes[i] === 0; i++) digits.push(0);
+    
+    const result = digits.reverse().map(d => ALPHABET[d]).join("");
+    setInput(result);
+    toast.success("已编码为 Base58");
+  };
+
+  // Decode
+  const decode = () => {
+    if (!input) return;
+    const bytes = [0];
+    for (let i = 0; i < input.length; i++) {
+        const c = input[i];
+        if (!(c in ALPHABET_MAP)) {
+            toast.error("无效的 Base58 字符");
+            return;
+        }
+        for (let j = 0; j < bytes.length; j++) bytes[j] *= 58;
+        bytes[0] += ALPHABET_MAP[c];
+        let carry = 0;
+        for (let j = 0; j < bytes.length; ++j) {
+            bytes[j] += carry;
+            carry = bytes[j] >> 8;
+            bytes[j] &= 0xff;
+        }
+        while (carry) {
+            bytes.push(carry & 0xff);
+            carry >>= 8;
+        }
+    }
+    
+    // Deal with leading zeros (represented by '1' in Base58 Bitcoin)
+    for (let i = 0; i < input.length && input[i] === '1'; i++) bytes.push(0);
+
+    const result = bytesToText(new Uint8Array(bytes.reverse()));
+    setInput(result);
+    toast.success("已解码为文本");
+  };
+
+  const clearAll = () => setInput("");
+
+  return (
+    <div className="space-y-6 animate-in fade-in slide-in-from-bottom-4 duration-500">
+      <div className="flex items-center space-x-4 border-b pb-4">
+        <div className="flex h-12 w-12 items-center justify-center rounded-xl bg-linear-to-br from-amber-500 to-orange-600 shadow-lg">
+          <Binary className="h-6 w-6 text-white" />
+        </div>
+        <div>
+          <h1 className="text-2xl font-bold tracking-tight">Base58 编解码</h1>
+          <p className="text-muted-foreground">比特币风格 Base58 文本转换</p>
+        </div>
+      </div>
+
+      <div className="grid gap-6">
+        <Card>
+          <CardHeader className="flex flex-row items-center justify-between space-y-0">
+            <CardTitle className="text-base font-medium">输入/输出文本</CardTitle>
+            <div className="flex gap-2">
+              <Button variant="ghost" size="sm" onClick={() => copyToClipboard(input)} disabled={!input}>
+                <Copy className="h-4 w-4 mr-2" />
+                复制
+              </Button>
+              <Button variant="ghost" size="sm" onClick={clearAll} disabled={!input} className="text-destructive hover:text-destructive">
+                <Trash2 className="h-4 w-4 mr-2" />
+                清空
+              </Button>
+            </div>
+          </CardHeader>
+          <CardContent>
+            <Textarea
+              placeholder="请输入需要编解码的内容..."
+              className="min-h-[250px] font-mono text-base resize-y"
+              value={input}
+              onChange={(e) => setInput(e.target.value)}
+            />
+          </CardContent>
+        </Card>
+
+        <div className="flex flex-col sm:flex-row gap-4">
+          <Button onClick={encode} size="lg" className="flex-1 gap-2">
+            <ArrowUpDown className="h-4 w-4" />
+            编码 (Encode)
+          </Button>
+          <Button onClick={decode} size="lg" variant="outline" className="flex-1 gap-2">
+            <ArrowUpDown className="h-4 w-4" />
+            解码 (Decode)
+          </Button>
+        </div>
+      </div>
+      
+       {/* Info Card */}
+       <Card>
+        <CardHeader>
+          <CardTitle className="flex items-center gap-2 text-base">
+            <span className="text-xl">💡</span> Base58 说明
+          </CardTitle>
+        </CardHeader>
+        <CardContent>
+          <div className="text-sm text-muted-foreground space-y-2">
+            <p>Base58 是一种基于文本的二进制编码格式。它类似于 Base64，但去除了容易混淆的字符（0, O, I, l）以及非字母数字字符（+, /），使其更适合人工识别和复制。</p>
+            <p>本工具使用比特币标准的字母表：<code>123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz</code></p>
+          </div>
+        </CardContent>
+      </Card>
+    </div>
+  );
+}