- Cryptography with Python Tutorial
- Home
- Overview
- Double Strength Encryption
- Python Overview and Installation
- Reverse Cipher
- Caesar Cipher
- ROT13 Algorithm
- Transposition Cipher
- Encryption of Transposition Cipher
- Decryption of Transposition Cipher
- Encryption of files
- Decryption of files
- Base64 Encoding & Decoding
- XOR Process
- Multiplicative Cipher
- Affine Ciphers
- Hacking Monoalphabetic Cipher
- Simple Substitution Cipher
- Testing of Simple Substitution Cipher
- Decryption of Simple Substitution Cipher
- Python Modules of Cryptography
- Understanding Vignere Cipher
- Implementing Vignere Cipher
- One Time Pad Cipher
- Implementation of One Time Pad Cipher
- Symmetric & Asymmetric Cryptography
- Understanding RSA Algorithm
- Creating RSA Keys
- RSA Cipher Encryption
- RSA Cipher Decryption
- Hacking RSA Cipher
- Useful Resources
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In Python, it is possible to encrypt and decrypt files before transmitting to a communication channel. For this, you will have to use the plugin PyCrypto. You can installation this plugin using the command given below.
pip install pycrypto
Code
The program code for encrypting the file with password protector is mentioned below −
# =================Other Configuration================# Usages :usage = "usage: %prog [options] "# VersionVersion="%prog 0.0.1"# ====================================================# Import Modulesimport optparse, sys,osfrom toolkit import processor as psdef main(): parser = optparse.OptionParser(usage = usage,version = Version) parser.add_option( '-i','--input',type = 'string',dest = 'inputfile', help = "File Input Path For Encryption", default = None) parser.add_option( '-o','--output',type = "string",dest = 'outputfile', help = "File Output Path For Saving Encrypter Cipher",default = ".") parser.add_option( '-p','--password',type = "string",dest = 'password', help = "Provide Password For Encrypting File",default = None) parser.add_option( '-p','--password',type = "string",dest = 'password', help = "Provide Password For Encrypting File",default = None) (options, args)= parser.parse_args() # Input Conditions Checkings if not options.inputfile or not os.path.isfile(options.inputfile): print " [Error] Please Specify Input File Path" exit(0) if not options.outputfile or not os.path.isdir(options.outputfile): print " [Error] Please Specify Output Path" exit(0) if not options.password: print " [Error] No Password Input" exit(0) inputfile = options.inputfile outputfile = os.path.join( options.outputfile,os.path.basename(options.inputfile).split('.')[0]+'.ssb') password = options.password base = os.path.basename(inputfile).split('.')[1] work = "E" ps.FileCipher(inputfile,outputfile,password,work) return if __name__ == '__main__': main()You can use the following command to execute the encryption process along with password −
python pyfilecipher-encrypt.py -i file_path_for_encryption -o output_path -p password
Output
You can observe the following output when you execute the code given above −
Explanation
The passwords are generated using MD5 hash algorithm and the values are stored in simply safe backup files in Windows system, which includes the values as displayed below −
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