一、实现MD5加密
方法一：MD5直接加密
import hashlib# 定义用户名和密码username = 'admin'password = '123'# 计算用户名的MD5哈希值md = hashlib.md5(username.encode())md5username = md.hexdigest()print(md5username)# 计算密码的MD5哈希值md = hashlib.md5(password.encode())md5password = md.hexdigest()print(md5password)运行看结果：
21232f297a57a5a743894a0e4a801fc3
202cb962ac59075b964b07152d234b70
建议加密是否正确：
方法二：MD5+盐加密，将盐拼接在原密码后
import hashlibtext1='123456'print(text1)SALE=text1[:4]# 设置盐值print(str(text1)+SALE)md_sale=hashlib.md5((text1+SALE).encode()) # MD5加盐加密方法一：将盐拼接在原密码后md5salepwd=md_sale.hexdigest()print(md5salepwd) 输出结果：
方法三：MD5+盐加密，将password整体插入SALE的每个元素之间
import hashlibtext1='123456'print(text1)SALE=text1[:4]# 设置盐值print(str(text1).join(SALE))md_sale=hashlib.md5((str(text1).join(SALE)).encode()) # MD5加盐加密方法二：将password整体插入SALE的每个元素之间md5salepwd=md_sale.hexdigest()print(md5salepwd) 输出结果：
二、实现base64加密解密
1、Python实现base64加密，可以使用base64库。
代码如下：
import base64# 加密username = "admin"base64_username = base64.b64encode(username.encode('utf-8')).decode()print(base64_username)password = "123"base64_password = base64.b64encode(password.encode('utf-8')).decode()print(base64_password)运行结果：
YWRtaW4=MTIzProcess finished with exit code 0对比结果：
2、 Python实现base64解密，可以使用base64库。
import base64import requests# 加密username = "admin"base64_username = base64.b64encode(username.encode('utf-8')).decode()print(base64_username)password = "123"base64_password = base64.b64encode(password.encode('utf-8')).decode()print(base64_password)data={'username':base64_username,'password':base64_password}response=requests.post("http://*****:5000/base64login",params=data)print(response.json())# 解密str1 = base64.b64decode(base64_username.encode('utf-8')).decode()print(str1)str2 = base64.b64decode(base64_password.encode('utf-8')).decode()print(str2)打印结果：
YWRtaW4=MTIz{'error_code': 0, 'message': 'Base64加密登陆成功！'}admin123Process finished with exit code 0三、实现RSA加密解密
一、RSA加密算法
RSA加密算法是一种非对称加密算法，加密的秘钥是由公钥和私钥两部分组成秘钥对，公钥用来加密消息，私钥用来解密消息，公钥是公开的，给对方进行加密，私钥则是用户自己保留，用来对加密的数据进行解密。
公钥pem文件格式：以-----BEGIN PUBLIC KEY-----标记打头，以-----END PUBLIC KEY-----标记结尾，中间部分即为公钥
-----BEGIN PUBLIC KEY-----MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDM6dGIA2naE3nGXi6O9vHskRSjuC5hn30msl+bk1yJl4NUqH1et7S3C0NWMDHPkC0vyWtp8HTpV1bFN747zToegLOsn1+zsf1LSObVce+UU76w1J3oAHBPCHSTt+WuTe+FMbQzvX1CQAdzdqCvYFvb+b9Y+L+ajto9raO0cfdGawIDAQAB-----END PUBLIC KEY-----私钥pem文件格式：以-----BEGIN RSA PRIVATE KEY-----打头，以-----END RSA PRIVATE KEY-----结尾，中间部分即为私钥
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----二、使用Python进行RSA加密解密
1、模块安装
pip install pycryptodome -i https://pypi.tuna.tsinghua.edu.cn/simple2、代码示例
import base64from Crypto import Randomfrom Crypto.Cipher import PKCS1_v1_5from Crypto.PublicKey import RSA# 伪随机数生成器random_generator = Random.new().read# rsa算法生成秘钥对实例对象：1024是秘钥的长度rsa = RSA.generate(1024, random_generator)#生成私钥并保存到pem文件，如果知道秘钥值key3也可以不保存，拼接上begin/end标识后加载直接用，如key3 = '-----BEGIN PUBLIC KEY-----\n' + key3 + '\n' + '-----END PUBLIC KEY-----'private_pem = rsa.exportKey()#print(private_pem)with open("./private.pem", "wb") as f: #wb,以二进制格式写入文件到当前文件夹中 f.write(private_pem)#生成公钥并保存到pem文件，当然也可以不保存直接用,即key1public_pem = rsa.publickey().exportKey()with open("./public.pem", "wb") as f: #wb,以二进制格式写入文件 f.write(public_pem)#plaintext:需要加密的明文文本，公钥加密，私钥解密plaintext = 'admin'#加密过程# 1：加载公钥with open("public.pem") as f1: key1 = f1.read() #从pem文件中读取公钥内容，包括begin头/end尾标识 public_key = RSA.import_key(key1) #加载公钥key1#:2：加密cipher_rsa = PKCS1_v1_5.new(public_key)#cipher_text 即为加密后的密文cipher_text = base64.b64encode(cipher_rsa.encrypt(plaintext.encode('utf-8')))#打印加密结果#Python3的字符串的编码语言用的是unicode编码，由于Python的字符串类型是str,如果直接打印出来print(cipher_text)，会是b'字符串'，解决方案是后面添加decode('utf-8')print(cipher_text.decode('utf-8'))# 读取私钥with open("private.pem") as f2: key2 = f2.read()#从pem文件中读取私钥内容，包括begin头/end尾标识 private_key = RSA.import_key(key2)#加载私钥key2# 解密cipher_rsa = PKCS1_v1_5.new(private_key)text = cipher_rsa.decrypt(base64.b64decode(cipher_text),random_generator)#打印解密结果#Python3的字符串的编码语言用的是unicode编码，由于Python的字符串类型是str,如果直接打印出来print(text)，会是b'字符串'，解决方案是后面添加decode('utf-8')print(text.decode('utf-8'))3、运行结果
uORTWLnlQ8IdBY3BJIQjeaPfL7aAvBf8VB0zku6LKRZJvK2vlqEyX77i7JPXx7b4OrK86/c93McR72oOdujY5PY/K6aAXz0FYmkN01s6eYfFC5ODRLxgCuVuE+6+QLUc3b8kYOQ11Q3sXRnCJyjWdeGu/IkBZ3WSn8WlHxCDSK8=adminProcess finished with exit code 04、代码示例2
from Crypto.PublicKey import RSAfrom Crypto.Cipher import PKCS1_OAEPimport base64# 生成RSA密钥对key = RSA.generate(2048)# 加密数据public_key = key.publickey()cipher = PKCS1_OAEP.new(public_key)encrypted_data = cipher.encrypt(b'admin')encoded_encrypted_data = base64.b64encode(encrypted_data)print(encoded_encrypted_data.decode('utf-8'))# 解密数据cipher = PKCS1_OAEP.new(key)decoded_encrypted_data = base64.b64decode(encoded_encrypted_data)decrypted_data = cipher.decrypt(decoded_encrypted_data)print(decrypted_data.decode())运行结果
PZssDKs036HTNWA/EGKIF9m5S+8LZ9vNadzXzx19tLsT1F7M4JZHYGlS0ep54q5ICSp4daPR2RZMjRfotQiWZrUE1MWz25N1ocyegtbFplscOczhJ33RYGmVheCfJnV+Hxkxu77S0K0GACeRwRRZ8XcSmgMAqZ0EiDKgpNZ5NBweDtula0oH26gQa8o5fB49AwZ28JEGaWsTeuDiLgG/u3fotqcDFqY2bMeFntISNQ5MzSI1RNdIuK73phFNgIlELmw14i3UrYlSEJdpwj2IrQeYZbXQzEzQA0mDRnUvRzF/pCKX3Kg7rnAcERszhpuKzAzGZSQEEjnUGAq3tXvvfw==adminProcess finished with exit code 0