密码学入门

sylj622548

密码学入门

题目TXT内容

Ld hcrakewcfaxr, f hofjjlhfo hlaxuc lj f krau ev hlaxuc kxfk zfj tjui xljkeclhfoor gtk dez xfj vfooud, vec kxu pejk afck, ldke iljtju. Ld hedkcfjk ke peiucd hcrakewcfaxlh foweclkxpj, pejk hofjjlhfo hlaxucj hfd gu acfhklhfoor hepatkui fdi jeoyui gr xfdi. Xezuyuc, OrmkO3vydJCoe2qyNLmcN2qlpJXnM3SxM2Xke3q9 kxur fcu foje tjtfoor yucr jlpaou ke gcufn zlkx peiucd kuhxdeoewr. Kxu kucp ldhotiuj kxu jlpaou jrjkupj tjui jldhu Wcuun fdi Cepfd klpuj, kxu uofgecfku Cudfljjfdhu hlaxucj, Zecoi Zfc LL hcrakewcfaxr jthx fj kxu Udlwpf pfhxldu fdi guredi. F btlhn gcezd veq mtpa eyuc kxu ofsr iew.

解题步骤：

1. 进行词频分析分析密码的正确顺序
2. base64 解码  
3. 获取flag

zxy20014

flag：flag{caesar_base64_decode_123}

臭臭云盘

"As cryptography, a classical cipher is a type of cipher that was used historically but now has fallen into disuse, except for the most part, in educational contexts. In contrast to modern cryptographic algorithms, most classical ciphers can be practically computed and solved by hand. However, the OrmkO3vydJCoe2qyNLmcN2qlpJXnM3SxM2Xke3q9 key are also usually very simple to break with modern technology. The term includes the simple systems used since Greek and Roman times, the elaborate Renaissance ciphers, World War II cryptography such as the Enigma machine and beyond. A quick brown fox jumps over the lazy dog."

fqhs

可以讲讲什么凯撒编码吗？嘿嘿

Tyler9

太牛了，学习了

鑫利办公

一抹黑，啥也看不懂

Thomasxiong

想学习基础理论和实践，从何开始，求建议

ff5500

基本映射：

k → t

x → h

u → e

f → a

Lsssb

zxy20014 发表于 2026-8-5 17:25
flag：flag{caesar_base64_decode_123}

flag{cryptography_is_easy}

HYXR

flag{classical_cipher_so_easy}