feat: 实现多个挑战并改进测试

- 重写p1实现纯Rust的hex到base64转换
- 完成p13 ECB剪切粘贴攻击和破解脚本
- 实现p33 Diffie-Hellman密钥交换算法
- 修复p9的PKCS#7测试用例
- 在common库添加gen_random_key和pkcs7_unpadding函数
- 更新workspace依赖管理

problems/p13/crack.py

@@ -0,0 +1,42 @@
+from pwn import *
+
+# context.log_level = "debug"
+
+p = process("../../target/x86_64-unknown-linux-musl/debug/p13")
+p.recvuntil(b"> ")  # 等待提示符
+
+
+p.sendline(b"1")
+p.recvuntil(b"email: ")
+p.sendline(b"foo@bar.com12")
+cipher = p.recvline().strip()
+print(f"Cipher: {cipher}")
+
+role_cipher = cipher[32:64]
+
+p.sendline(b"1")
+p.recvuntil(b"email: ")
+p.sendline(b"foo@bar.co" + b"admin" + b"\x0b" * 11)
+cipher = p.recvline().strip()
+# admin_cipher = cipher[32:64]
+print(f"Cipher: {cipher}")
+
+cracked_cipher = cipher[0:32] + role_cipher + cipher[32:]
+
+p.recvuntil(b"> ")
+p.sendline(b"2")
+p.recvuntil(b"cipher: ")
+p.sendline(cracked_cipher)
+
+profile = p.recvline().strip()
+print(f"Profile: {profile}")
+
+json = p.recvline().strip()
+print(f"Json: {json}")
+
+if b"Cracked!" in json:
+    print("Success!")
+
+
+p.recvuntil(b"> ")
+# p.interactive()