RSA Python Encryption & Decryption Example That Works

by jamied_uk 3rd December 2022, 20:58

Code:: #!/usr/bin/python3 # pip install rsa import rsa # generate public and private keys with # rsa.newkeys method,this method accepts # key length as its parameter # key length should be atleast 16 publicKey, privateKey=rsa.newkeys(1024) # 512 # this is the string that we will be encrypting message="hello geeks" # rsa.encrypt method is used to encrypt # string with public key string should be # encode to byte string before encryption # with encode method encMessage=rsa.encrypt(message.encode(), publicKey) print("original string: ", message) print("encrypted string: ", encMessage) # the encrypted message can be decrypted # with ras.decrypt method and private key # decrypt method returns encoded byte string, # use decode method to convert it to string # public key cannot be used for decryption decMessage=rsa.decrypt(encMessage, privateKey).decode() print("decrypted string: ", decMessage)

Setup rsa for python on linux

by jamied_uk 3rd December 2022, 22:28

A Python3 Example

Code:: #!/usr/bin/python3 from Crypto.PublicKey import RSA from Crypto.Cipher import PKCS1_OAEP import binascii keyPair = RSA.generate(3072) pubKey = keyPair.publickey() print(f"Public key: (n={hex(pubKey.n)}, e={hex(pubKey.e)})") pubKeyPEM = pubKey.exportKey() print(pubKeyPEM.decode('ascii')) print(f"Private key: (n={hex(pubKey.n)}, d={hex(keyPair.d)})") privKeyPEM = keyPair.exportKey() print(privKeyPEM.decode('ascii')) # encryption msg = b'A message for encryption' encryptor = PKCS1_OAEP.new(pubKey) encrypted = encryptor.encrypt(msg) print("Encrypted:", binascii.hexlify(encrypted)) # Decryption decryptor = PKCS1_OAEP.new(keyPair) decrypted = decryptor.decrypt(encrypted) print('Decrypted:', decrypted)

Re: RSA Python Encryption & Decryption Example That Works