Python RSA 加密

博主： zmx
发布时间：2022 年 08 月 23 日
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分类： Python

# 引言

RSA是一种非对称加密算法，一般我们都使用公钥进行加密，私钥进行解密，当然，公钥和私钥都可以进行加解密，并且需要完整的公私钥，才能实现加解密流程，只有一个是无法进行解密的。

# 代码

pubkey和privkey修改成你自己生成的就好了。

```python
import base64
from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher
from Crypto.PublicKey import RSA
import rsa
from Crypto import Random

pubkey = """-----BEGIN RSA PUBLIC KEY----- 
MIICCgKCAgEAvbZ+f+7FOt/yj6qOXnG+28FdFKbvB3LGbTJqMq6S73ZAyt/wcHGO 
ZruhLqGK4/Ye4IIFg37KssQZuzDMS9mOpGTsyS+5uIhcTkxbjzHQt5ItDOzqFK5W 
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GpdF3RyBhvtdWNzCIdbQp4KuGNdLdQ3ogcUbeyVkrkWlfo7UNBxfG66NfxOM6/eJ 
/91QsN7sweWoBUks/Kt/ipi1/a176qiE9hSWErw37E+8RZ54mpT3ZyECAwEAAQ== 
-----END RSA PUBLIC KEY----- 
"""
privkey = """-----BEGIN RSA PRIVATE KEY----- 
MIIJNwIBAAKCAgEAvbZ+f+7FOt/yj6qOXnG+28FdFKbvB3LGbTJqMq6S73ZAyt/w 
cHGOZruhLqGK4/Ye4IIFg37KssQZuzDMS9mOpGTsyS+5uIhcTkxbjzHQt5ItDOzq 
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N/FTwA/U6oO1PEI= 
-----END RSA PRIVATE KEY----- 
"""

# 非对称RSA加密
def generate():
    pubkey, privkey = rsa.newkeys(4096)
    print(pubkey.save_pkcs1())
    print(privkey.save_pkcs1())

def encrypt(data, public_key):
    if type(data) is str:
        data = data.encode('utf-8')
    pub_key = RSA.importKey(public_key)
    cipher = PKCS1_cipher.PKCS115_Cipher(pub_key, Random.get_random_bytes)
    keyLen = ((int(len(public_key) / 8)) - 11)
    if len(data) <= keyLen:
        rsa_text = base64.b64encode(cipher.encrypt(data))
        return rsa_text
    else:
        start = 0
        encrypt_data = b''
        while start < len(data.decode('utf8')):
            end = start + keyLen
            data1 = data.decode('utf8')[start:end]
            encrypt_data += cipher.encrypt(data1.encode('utf8'))
            start = start + keyLen
        return base64.b64encode(encrypt_data)

# 非对称RSA解密
def decrypt(data, private_key):
    if type(data) is str:
        data = data.encode('utf-8')
    pri_key = RSA.importKey(private_key)
    cipher = PKCS1_cipher.PKCS115_Cipher(pri_key, Random.get_random_bytes)
    binSec = base64.b64decode(data)
    keyLen = pri_key.size_in_bytes()
    if len(data) <= keyLen:
        rsa_text = cipher.decrypt(binSec, 0)
        return rsa_text
    else:
        start = 0
        decrypt_data = b''
        while start < len(binSec):
            end = start + keyLen
            data1 = binSec[start:end]
            decrypt_data += cipher.decrypt(data1, 0)
            start = start + keyLen
        return decrypt_data.decode('utf-8')

if __name__ == '__main__':
    for i in range(0, 1000):
        t = ('Security ' * i)
        e = encrypt(t, privkey)
        d = decrypt(e, privkey)
        print(d)
```

如果想生成自己的密钥对，执行方法generate就好了，把输出的文本替换一下就可以使用了。

# 结论

RSA 加解密速度慢，但是安全性高，需要按需考虑。

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Python RSA 加密

zmx • 2022 年 08 月 23 日

# 引言

# 代码

pubkey和privkey修改成你自己生成的就好了。

```python
import base64
from Crypto.Cipher import PKCS1_v1_5 as PKCS1_cipher
from Crypto.PublicKey import RSA
import rsa
from Crypto import Random

# 非对称RSA加密
def generate():
    pubkey, privkey = rsa.newkeys(4096)
    print(pubkey.save_pkcs1())
    print(privkey.save_pkcs1())

if __name__ == '__main__':
    for i in range(0, 1000):
        t = ('Security ' * i)
        e = encrypt(t, privkey)
        d = decrypt(e, privkey)
        print(d)
```

如果想生成自己的密钥对，执行方法generate就好了，把输出的文本替换一下就可以使用了。

# 结论

RSA 加解密速度慢，但是安全性高，需要按需考虑。

Python RSA 加密

发表评论取消回复
使用cookie技术保留您的个人信息以便您下次快速评论，继续评论表示您已同意该条款了昂。

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Python RSA 加密

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