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() #导出私钥 print(private_key.decode('utf-8')) #以utf-8格式解码并打印私钥 # 生成公钥 public_key = rsa.publickey().exportKey() #导出私钥 print(public_key.decode('utf-8')) #以utf-8格式解码并打印公钥 with open('rsa_private_key.pem', 'wb')as f: f.write(private_key) #打开私钥文件并进行写操作 with open('rsa_public_key.pem', 'wb')as f: f.write(public_key) #打开公钥文件并进行写操作 import base64 #导入base64编码 from Crypto.PublicKey import RSA #导入PulbicKey库 from Crypto.Hash import SHA #导入Hash库 from Crypto.Signature import PKCS1_v1_5 as PKCS1_signature #导入Signature库 from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher #导入Cipher库 # def get_key(key_file): with open(key_file) as f: data = f.read() key = RSA.importKey(data) return key def encrypt_data(msg): public_key = get_key('rsa_public_key.pem') cipher = PKCS1_cipher.new(public_key) encrypt_text = base64.b64encode(cipher.encrypt(bytes(msg.encode("utf8")))) return encrypt_text.decode('utf-8') def decrypt_data(encrypt_msg): private_key = get_key('rsa_private_key.pem') cipher = PKCS1_cipher.new(private_key) back_text = cipher.decrypt(base64.b64decode(encrypt_msg), 0) return back_text.decode('utf-8') def test_encrypt_decrypt(): msg = "coolpython.net" encrypt_text = encrypt_data(msg) decrypt_text = decrypt_data(encrypet_text) print(msg == decrypt_text) test_encrypt_decrypt() # Tru

这段代码的作用是导入了 Crypto 模块的 Random 和 RSA 子模块，用于生成随机数及生成 2048 位 RSA 公钥和私钥。其中，random_generator 通过读取 Random 模块的新实例化对象的 read() 方法来生成随机数，rsa 通过调用 RSA 模块的 generate() 方法生成指定位数的公私钥对。

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注释下列代码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() #导出私钥 print(private_key.decode('utf-8')) #以utf-8格式解码并打印私钥 # 生成公钥 public_key = rsa.publickey().exportKey() #导出私钥 print(public_key.decode('utf-8')) #以utf-8格式解码并打印公钥 with open('rsa_private_key.pem', 'wb')as f: f.write(private_key) #打开私钥文件并进行写操作 with open('rsa_public_key.pem', 'wb')as f: f.write(public_key) #打开公钥文件并进行写操作 import base64 #导入base64编码 from Crypto.PublicKey import RSA #导入PulbicKey库 from Crypto.Hash import SHA #导入Hash库 from Crypto.Signature import PKCS1_v1_5 as PKCS1_signature #导入Signature库 from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher #导入Cipher库 # def get_key(key_file): with open(key_file) as f: data = f.read() key = RSA.importKey(data) return key def encrypt_data(msg): public_key = get_key('rsa_public_key.pem') cipher = PKCS1_cipher.new(public_key) encrypt_text = base64.b64encode(cipher.encrypt(bytes(msg.encode("utf8")))) return encrypt_text.decode('utf-8') def decrypt_data(encrypt_msg): private_key = get_key('rsa_private_key.pem') cipher = PKCS1_cipher.new(private_key) back_text = cipher.decrypt(base64.b64decode(encrypt_msg), 0) return back_text.decode('utf-8') def test_encrypt_decrypt(): msg = "coolpython.net" encrypt_text = encrypt_data(msg) decrypt_text = decrypt_data(encrypt_text) print(msg == decrypt_text) test_encrypt_decrypt() # Tru

这段代码使用了Python的Crypto库，引入了两个模块，Random和RSA。

其中，Random模块用于生成随机数生成器，通过调用new()方法产生随机数据源。RSA模块则用于生成指定位数的RSA加密算法公钥和私钥。

在代码中，使用了2048位的密钥长度作为参数传入生成RSA密钥对的方法中，并将随机数据源传入random_generator参数中。最终，将生成的RSA密钥对存储在变量rsa中。

text = cipher_rsa.decrypt(base64.b64decode(cipher_text),random_generator)

这段代码是用Python编写的，用于解密使用RSA算法加密的文本。具体解释如下：

1. `cipher_rsa` 是一个RSA解密对象，通常是通过 `PKCS1_OAEP` 模块创建的。
2. `base64.b64decode(cipher_text)` 将Base64编码的密文解码为原始的二进制数据。`cipher_text` 是加密后的文本。
3. `random_generator` 是一个随机数生成器对象，通常用于生成随机数以增强安全性。
4. `cipher_rsa.decrypt` 方法使用RSA解密算法对解码后的密文进行解密，并返回明文字符串 `text`。

完整代码示例如下：

from Crypto.Cipher import PKCS1_OAEP
from Crypto.PublicKey import RSA
import base64

# 生成RSA密钥
key = RSA.generate(2048)
private_key = key.export_key()
public_key = key.publickey().export_key()

# 加密
cipher_rsa = PKCS1_OAEP.new(RSA.import_key(public_key))
plain_text = b"Hello, World!"
cipher_text = cipher_rsa.encrypt(plain_text)
cipher_text_base64 = base64.b64encode(cipher_text)

# 解密
cipher_rsa = PKCS1_OAEP.new(RSA.import_key(private_key))
text = cipher_rsa.decrypt(base64.b64decode(cipher_text_base64), None)

print(text)