Python crypto模块实现RSA和AES加密解密

pip install pycryptodome

# coding=utf-8
from Crypto import Random
from Crypto.PublicKey import RSA
 
 
random_generator = Random.new().read
rsa = RSA.generate(2048, random_generator)
# 生成私钥
private_key = rsa.exportKey()
print(private_key.decode('utf-8'))
print("-" * 30 + "分割线" + "-" * 30)
# 生成公钥
public_key = rsa.publickey().exportKey()
print(public_key.decode('utf-8'))

-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
------------------------------分割线------------------------------
-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAziBz4OOXA+HOa9tBxvr/
ARp3p1cAKYD9E8a13CMY1ejrs7Of7jv6cA5nHyaFFapbtZCwwOntCTE1pOqph2JR
DGBQEtUYPKxJW6WiXdB/3a3XdPfwpdMW6WSbPP9sINPOOZmDr0RFtftIzVYuMDcs
HjB8+lzjIxTaIjD1GLwlpOlJxnZ1S6k3yEfbJdIjkobfoKL/sLh1AKlEX8fuBnFP
5LRt7OMiB9k5Cpw8DpdPbn5IkjKKnDv3njzHI+Z+FygUS9HCJ3YeDn9kUtU/v+Il
DG+lLIFNC7s2bsvQVsWYyxQLtAi5IdLArxoxo/ZjpT0ghWfm8thMrlK3W8E0veKC
1wIDAQAB
-----END PUBLIC KEY-----

from Crypto import Random
from Crypto.PublicKey import RSA
from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher
import base64
 
 
random_generator = Random.new().read
rsa = RSA.generate(2048, random_generator)
 
private_key = rsa.exportKey()
with open("private_a.rsa", 'wb') as f:
    f.write(private_key)
 
public_key = rsa.publickey().exportKey()
with open("public_a.rsa", 'wb') as f:
    f.write(public_key)
 
# 使用公钥对内容进行rsa加密
message = "需要加密的信息"
with open('public_a.rsa') as f:
    key = f.read()
    pub_key = RSA.importKey(str(key))
    cipher = PKCS1_cipher.new(pub_key)
    rsa_text = base64.b64encode(cipher.encrypt(bytes(message.encode("utf8"))))
    print(rsa_text.decode('utf-8'))
 
# 使用私钥对内容进行rsa解密
with open('private_a.rsa') as f:
    key = f.read()
    pri_key = RSA.importKey(key)
    cipher = PKCS1_cipher.new(pri_key)
    back_text = cipher.decrypt(base64.b64decode(rsa_text), 0)
    print(back_text.decode('utf-8'))

Tx4v9BSJIhQqXz/i/rfYKoaatxFE5ZFwaumTmYMrZr8btTYp5LicCJQksrWCinln7eQejbat3txUj2BGFNdioQLiXOpFhphI0W4lQps2NAX+s9le3ImS0olJO6HToHzLxuuPsfg4JFcqPQkvzOtznZijOC5q4prc46XHO7CIk6y6rZJhXz/MIBAKFt+C79dh/L64bu0HLXmtrkEFrjJN97GVhTEPeP+OusP7fEW1JqQGIXl/nVbttrjf3txw2op0tq4GT1f7YwUgMQTlWyFBlPo4CFu1yRwBt2xGjfSBhSn2g63JPXf2l05YxxhFnWVJaQ+Qkk/1mv970mRAAxq9Pg==
需要加密的信息

from Crypto.PublicKey import RSA
from Crypto.Hash import SHA
import base64
from Crypto.Signature import PKCS1_v1_5 as PKCS1_signature
 
 
message = "需要加密的信息"
# 使用私钥生成签名
with open('private_a.rsa') as f:
    key = f.read()
    pri_key = RSA.importKey(key)
    signer = PKCS1_signature.new(pri_key)
    digest = SHA.new()
    digest.update(message.encode("utf8"))
    sign = signer.sign(digest)
    signature = base64.b64encode(sign)
    print(signature.decode('utf-8'))
 
# 使用公钥验证签名
with open('public_a.rsa') as f:
    key = f.read()
    pub_key = RSA.importKey(key)
    verifier = PKCS1_signature.new(pub_key)
    digest = SHA.new()
    digest.update(message.encode("utf8"))
    print(verifier.verify(digest, base64.b64decode(signature)))

O8MiiUV45yNDJvMJfBigVXQswBRYMDpQcHESV2R54RBPcTBLesXh3Gl9iO3mI9hEKZeCM3njJvQ2CWiIk2mvLXqklW6Qqx23dx139yI6LWtOzfew8C+vLyWuELNHv215ne81aHNCI3sSSe947Fz/M6D13PbumkrCZHrX3IRlT/Fmb6yX5eXKtIX1azN3Op3VfZZKmZsCJ7Jjd4CgL4iKHsZ0S8j3BAIwI7+8XqQb7ToNZKrbpQSgYvI2vexfLaYRR243oZ4RBIM1+tZtV4PLCH8aEKkMMKU+Y8+12pv/5DDZcoueYxaENSNK+YU9scw2W3p9fu182DM3YpgWZ97QFw==
True

from Crypto.Cipher import AES
from binascii import b2a_hex, a2b_hex
 
 
message = "需要加密的信息"
key = 'aes_keysaes_keysaes_keys'
mode = AES.MODE_OFB
cryptor = AES.new(key.encode('utf-8'), mode, b'0000000000000000')
length = 16
count = len(message)
if count % length != 0:
    add = length - (count % length)
else:
    add = 0
message = message + ('\0' * add)
ciphertext = cryptor.encrypt(message.encode('utf-8'))
result = b2a_hex(ciphertext)
print(result.decode('utf-8'))
 
cryptor = AES.new(key.encode('utf-8'), mode, b'0000000000000000')
plain_text = cryptor.decrypt(a2b_hex(result))
print(plain_text.decode('utf-8').rstrip('\0'))

6b6f8ad38dcbc28e65c2cd0360780f8c5070af38d0c3942a8e242a1de74e
需要加密的信息