Symmetric encryption algorithm and asymmetric encryption algorithm speed comparison

test Environment:
CPU 1-Core Intel 2.2GHZ
Memory 1GB

algorithm	type
Symmetric encryption algorithm	AES CBC Mode
Asymmetric encryption algorithm	RSA 256

Encrypted plaintext length is bytes
Run 10,000 times each

On the Code test_aes.py

 fromCrypto.cipher Import Aesimport Timeobj = AES.New(' This is a key123 'Aes. MODE_CBC,' This was an IV456 ') message =' A '* theT1 = Time. Time() forIinchXrange10000): ciphertext = obj.Encrypt(message) Obj2 = AES.New(' This is a key123 'Aes. MODE_CBC,' This was an IV456 ')text= Obj2.Decrypt(ciphertext)#print Textt2 = Time. Time() Print T2-t1

test_rsa.py

 fromCrypto.publickey Import Rsaimport TimeT1 = Time. Time() key = Rsa.generate (2048) T2 = Time. Time() Print' Gen key ', T2-T1#print Key#print Key.exportkey ()#print rsa.exportkey (' PEM ')Message =' A '* theT1 = Time. Time() forIinchXrange10000): print I ciphertext = key.Encrypt(Message, None) key.Decrypt(ciphertext) t2 = Time. Time() Print T2-t1

algorithm	Time Consuming
Symmetric encryption algorithm	0.13
Asymmetric encryption algorithm	193.16
Asymmetric encryption algorithm generates key pair	0.68

Symmetric encryption algorithms are about 1500 times times faster than asymmetric encryption algorithms
RSA generates a key to take 0.68 seconds, visible symmetric encryption algorithm than asymmetric encryption algorithm has a very large performance advantage.

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Symmetric encryption algorithm and asymmetric encryption algorithm speed comparison