phamio/caesar

# caesar 一种凯撒密码编码和解码工具。 # 安装 ``` nimble install caesar ``` # 模式参考 [模式参考文件](https://github.com/ph4mished/caesar/blob/main/pattern.md) # 用法 ``` caesar -h ``` # 帮助输出 ``` =============================================================== Caesar 0.1.0 - Caesar cipher encoding and decoding =============================================================== Encode or Decode file in Caesar cipher. Usage: caesar [OPTIONS] Input may be a file path or stdin When no FILE is provided, read from standard input ===== ARGUMENT ===== File for caesar cipher encoding/decoding. ===== OPTIONS ===== -k, --key NUM Key for cipher encoding or decoding [default: 3] -p, --pattern PATTERN Advanced key patterns for cipher encoding or decoding(progressive cipher). Use 'caesar pattern --help' for complete reference -c, --count Count all characters (including non-alpha-ascii letters) for position index. -d, --decode Decode caesar cipher -h, --help Show this help. -v, --version Show version information. ====== EXAMPLES ===== # Encoding caesar my_file.txt -k 23 # Text Encoding echo 'hello world' | caesar -k 23 # Progressive Cipher Encoding echo 'hello world' | caesar -p 13:1 # Decoding caesar enc_file.txt -d -k 5 # Text Decoding echo 'uryyb jbeyq' | caesar -k 13 -d # Progressive Cipher Decoding echo 'usabf ohlgz' | caesar -p 13:1 -d NOTE: input containing spaces or special characters should be placed in quotes. ``` # 模式帮助 ``` caesar pattern --help ``` ## 输出 ``` =============================================================== Caesar 0.1.0 - Pattern Reference =============================================================== Advanced key patterns for progressive and variant Caesar ciphers. Usage: caesar --pattern PATTERN [OPTIONS] ===== PATTERN SYNTAX ===== 1. LINEAR INCREMENT KEY:STEP Add STEP to KEY for each letter. Example: '0:1' 0,1,2,3,4,5... Example: '25:-1' 25,24,23,22...(count down) Example: '3:2' 3,5,7,9,11... 2. CYCLIC INCREMENT KEY:STEP:CYCLE Add STEP to KEY for each letter, reset every CYCLE Example: '3:1:5' 3,4,5,6,7, 3,4,5,6,7... Example: '0:3:4' 0,3,6,9, 0,3,6,9... 3. BLOCK PATTERN KEY:STEP::BLOCK Same KEY for BLOCK chars, increment by STEP Example: '5:1::3' 5,5,5, 6,6,6, 7,7,7... Example: '3:2::4' 3,3,3,3, 5,5,5,5, 7,7,7,7... 4. CUSTOM SEQUENCE A,B,C,D... Repeat exact sequence of keys Example: '7,3,9' 7,3,9, 7,3,9, 7,3,9... Example: '1,4,9,16' 1,4,9,16, 1,4,9,16, 1,4,9,16... ===== POSITION COUNTING ===== By default, patterns use LETTER-ONLY position counting: 'a_b' => 'a'=position0, 'b'=position1 (underscore ignored) Use --count flag for ALL-CHARACTER counting: 'a_b' => 'a'=position0, 'b'=position2 (underscore counts as position1) ====== PRACTICAL EXAMPLES ===== # Common CTF Patterns caesar -p 0:1 my_file.txt #Increment by 1 each letter. caesar -p 3:1:5 message.txt #Decode cyclic pattern. caesar -p 5:1::3 flag.txt #Same key for 3 chars. caesar -p 7,3,9 puzzle.txt #Custom sequence # With Position Counting Options caesar -p 0:1 my_file.txt -c #Count all caesar -p 0:1 message.txt #Count only alpha-ascii letters # Mathematical Patterns '0:1' = f(n) = n #Linear. '3:1:5' = f(n) = 3 + (n mod 5) #Modulo cycle. '0:2' = f(n) = 2n #Even Numbers. '1:2' = f(n) = 2n + 1 #Odd Numbers. ====== NOTE ===== - Keys wrap automatically modulo 26 - Non-alpha-ascii letters (spaces, numbers, punctuations) are never shifted - Patterns work with both uppercase and lowercase letters ``` **注意**：凯撒密码极其脆弱，不要将其用于任何需要保护的内容 # 总结 我编写这个工具是为了 - 学习 Nim - 成为我 CTF 工具箱中的一个工具

标签：CLI, DOS头擦除, meg, Nim, nimble, ProjectDiscovery, WiFi技术, 二进制发布, 信息安全, 凯撒密码, 加密, 古典密码, 字符替换, 实用工具, 密码学, 密码破解, 开源工具, 手动系统调用, 数据保护, 文件加密, 文本加密, 模式匹配, 漏洞扫描器, 编码, 自动化资产收集, 解码, 进阶密钥, 隐私安全