Python常用加密解密算法
MD5加密
简介
这是一种使用非常广泛的加密方式，不可逆的,常见16位和32位一般都是md5
实现
import hashlib
data = '你好'
print(hashlib.md5(data.encode(encoding="UTF-8")).hexdigest()) #32位
print(hashlib.md5(data.encode(encoding="UTF-8")).hexdigest()[8:-8]) #16位
RSA加密
简介
非对称加密算法,也就是比较常见的公钥私钥加密,可逆的
指数和模加密无填充-模板一
import rsa
#模
m = "ae068c2039bd2d82a529883f273cf20a48e0b6faa564e740402375a9cb332a029b8492ae342893d9c9d53d94d3ab8ae95de9607c2e03dd46cebe211532810b73cc764995ee61ef435437bcddb3f4a52fca66246dbdf2566dd85fbc4930c548e7033c2bcc825b038e8dd4b3553690e0c438bbd5ade6f5a476b1cbc1612f5d501f"
#指数
e = '10001'
#加密参数
message = '123456'
class Encrypt(object):
def __init__(self, e, m):
self.e = e
self.m = m
def encrypt(self, message):
mm = int(self.m, 16)
ee = int(self.e, 16)
rsa_pubkey = rsa.PublicKey(mm, ee)
crypto = self._encrypt(message.encode(), rsa_pubkey)
return crypto.hex()
def _pad_for_encryption(self, message, target_length):
message = message[::-1]
max_msglength = target_length - 11
msglength = len(message)
padding = b''
padding_length = target_length - msglength - 3
for i in range(padding_length):
padding += b'\x00'
return b''.join([b'\x00\x00', padding, b'\x00', message])
def _encrypt(self, message, pub_key):
keylength = rsa.common.byte_size(pub_key.n)
padded = self._pad_for_encryption(message, keylength)
payload = rsa.transform.bytes2int(padded)
encrypted = rsa.core.encrypt_int(payload, pub_key.e, pub_key.n)
block = rsa.transform.int2bytes(encrypted, keylength)
return block
if __name__ == '__main__':
en = Encrypt(e, m)
print(en.encrypt(message))
指数和模加密无填充-模板二
import codecs
def rsa_encrypt(content):
public_exponent = '010001'
public_modulus = 'ae068c2039bd2d82a529883f273cf20a48e0b6faa564e740402375a9cb332a029b8492ae342893d9c9d53d94d3ab8ae95de9607c2e03dd46cebe211532810b73cc764995ee61ef435437bcddb3f4a52fca66246dbdf2566dd85fbc4930c548e7033c2bcc825b038e8dd4b3553690e0c438bbd5ade6f5a476b1cbc1612f5d501f'
content = content[::-1]
rsa = int(codecs.encode(content.encode('utf-8'), 'hex_codec'),
16) ** int(public_exponent, 16) % int(public_modulus, 16)
# 把10进制数rsa转为16进制（'x'表示16进制），再取前256位，不够的在最前面补0
return format(rsa, 'x').zfill(256)
指数和模加密无填充-模板三
import math
if __name__ == '__main__':
# 实为16进制串，前补0
e = ''
# m也需要补00
m = '008eb933413be3234dddd2730fbb1d05c8848a43d5dc3bdd997f2a9935fba6beb9ffb36854482b0b46cf7e6f9afbbe2e2e7d606fde20bec57dbf722e7985192e8813e6b67628a6f202cf655b7d2ffce4e9dc682dd6034ae706c8e255f25e4051b9ca43f25b3ad686aac9c8f6aeb71d921c13a255c806f78a5a7b9a356c2dd274e3'
m = int.from_bytes(bytearray.fromhex(m), byteorder='big')
e = int.from_bytes(bytearray.fromhex(e), byteorder='big')
# js加密为反向，为保持一致原文应反向处理，所以这里原文实际为204dowls
plaintext = 'slwod402'.encode('utf-8')
# 无填充加密逻辑
input_nr = int.from_bytes(plaintext, byteorder='big')
crypted_nr = pow(input_nr, e, m)
keylength = math.ceil(m.bit_length() / 8)
crypted_data = crypted_nr.to_bytes(keylength, byteorder='big')
print(crypted_data.hex())
指数和模加密有填充
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives.asymmetric import padding
import base64
import binascii
"""
另种rsa加密
"""
def data_encrypt(text):
"""
RSA 加密
:param text: 加密前内容
:return: 加密后内容
"""
# 判断系统,加载指定模块
public_exponent = int("010001",16) #指数
print(public_exponent)
public_modulus=int('B23322F080BD5876C0735D585D25C7BC409F637237B07744D27FBF39FB100ABE59DF380EA6BFCDF28C286E7A0CD95BE87F6099F8F39B0E97D9782C3D33FCFB80D43D2F22A9D9417ECFD1A0B8421DEE1CD4B323E8078336E77419A97F94E60A90CA06551202F63819FC8E73425F06ECA4C05BBF8CA32366240A6C36CA61D85019',16) #模
# content = 'leadeon' + text + time.strftime("%Y%m%d%H%M%S", time.localtime())
content = text
max_length = 117
# public_key = serialization.load_pem_public_key(key, backend=default_backend())
public_key = rsa.RSAPublicNumbers(public_exponent, public_modulus).public_key(default_backend())
data = b''
for i in range(0, len(content), max_length):
data += public_key.encrypt(content[i: i + max_length].encode(),
padding.PKCS1v15())
data = base64.b64encode(data).decode()
#data =binascii.b2a_hex(data).decode() hex输出
return data
公钥加密
# 公钥加密
import base64
import rsa
from Crypto.PublicKey import RSA
def encryptPassword(data):
'''
data:内容
publicKeyStr:不需要-----BEGIN PUBLIC KEY-----开头，-----END PUBLIC KEY-----结尾的格式,只要中间部分即可
key_encoded:不需要-----BEGIN PUBLIC KEY-----开头，-----END PUBLIC KEY-----结尾的格式
'''
publicKeyStr = 'MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCz6pa76j2c5YVahG5r4YoXPMpOK7gMJKNV01z+agKj3jiGYojK9/unFfB422iYWQkx1po5sOVVKU31U19VPZ7ORxauZpEk1A3yTpLPQj++ElVQLGgugERaoi2CY4TIwOd/g68idW+Id6jvr+3YqVqb8zwTb3H3OLzz53DYznGO9wIDAQAB'
# 1、base64解码
publicKeyBytes = base64.b64decode(publicKeyStr.encode())
# 3、生成publicKey对象
key = RSA.import_key(publicKeyBytes)
#key = RSA.import_key(key_encoded)
# 4、对原密码加密
encryptPassword = rsa.encrypt(data.encode(), key)
return base64.b64encode(encryptPassword).decode()
私钥解密
# rsa 解密
def long_decrypt(msg):
rsa_private_key = """-----BEGIN RSA PRIVATE KEY-----
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
-----END RSA PRIVATE KEY-----"""
msg = base64.b64decode(msg)
# 私钥解密
priobj = Cipher_pkcs1_v1_5.new(RSA.importKey(rsa_private_key))
data = priobj.decrypt(msg,None).decode()
return data
验签
from Crypto.Cipher import PKCS1_v1_5 as Cipher_pkcs1_v1_5
from Crypto.Signature import PKCS1_v1_5
from Crypto.PublicKey import RSA
from Crypto.Hash import SHA256
import base64
class RsaUtil:
def __init__(self, pub_key, pri_key):
self.pri_key_obj = None
self.pub_key_obj = None
self.verifier = None
self.signer = None
if pub_key:
pub_key = RSA.importKey(base64.b64decode(pub_key))
self.pub_key_obj = Cipher_pkcs1_v1_5.new(pub_key)
self.verifier = PKCS1_v1_5.new(pub_key)
if pri_key:
pri_key = RSA.importKey(base64.b64decode(pri_key))
self.pri_key_obj = Cipher_pkcs1_v1_5.new(pri_key)
self.signer = PKCS1_v1_5.new(pri_key)
def public_long_encrypt(self, data, charset='utf-8'):
data = data.encode(charset)
length = len(data)
default_length = 117
res = []
for i in range(0, length, default_length):
res.append(self.pub_key_obj.encrypt(data[i:i + default_length]))
byte_data = b''.join(res)
return base64.b64encode(byte_data)
def private_long_decrypt(self, data, sentinel=b'decrypt error'):
data = base64.b64decode(data)
length = len(data)
default_length = 128
res = []
for i in range(0, length, default_length):
res.append(self.pri_key_obj.decrypt(data[i:i + default_length], sentinel))
return str(b''.join(res), encoding = "utf-8")
def sign(self, data, charset='utf-8'):
h = SHA256.new(data.encode(charset))
signature = self.signer.sign(h)
return base64.b64encode(signature)
def verify(self, data, sign, charset='utf-8'):
h = SHA256.new(data.encode(charset))
return self.verifier.verify(h, base64.b64decode(sign))
MD5withRSA 签名
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import MD5, SHA1, SHA256
import base64
from flask import current_app
import warnings
warnings.filterwarnings("ignore")
def RSA_sign(data):
privateKey = '''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'''
private_keyBytes = base64.b64decode(privateKey)
priKey = RSA.importKey(private_keyBytes)
# priKey = RSA.importKey(privateKey)
signer = PKCS1_v1_5.new(priKey,)
# SIGNATURE_ALGORITHM = "MD5withRSA"
hash_obj = MD5.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA1withRSA"
# hash_obj = SHA1.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA256withRSA"
# hash_obj = SHA256.new(data.encode('utf-8'))
signature = base64.b64encode(signer.sign(hash_obj))
return signature
if __name__ == '__main__':
data = "phone=15811352072×tamp=1612496512540&device=Android"
res_sign1 = RSA_sign(data)
signature = res_sign1.decode('utf8')
print(signature)
实现SHA1withRSA 签名
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import MD5, SHA1, SHA256
import base64
from flask import current_app
import warnings
warnings.filterwarnings("ignore")
def RSA_sign(data):
privateKey = '''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'''
private_keyBytes = base64.b64decode(privateKey)
priKey = RSA.importKey(private_keyBytes)
# priKey = RSA.importKey(privateKey)
signer = PKCS1_v1_5.new(priKey,)
# SIGNATURE_ALGORITHM = "MD5withRSA"
# hash_obj = MD5.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA1withRSA"
hash_obj = SHA1.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA256withRSA"
# hash_obj = SHA256.new(data.encode('utf-8'))
signature = base64.b64encode(signer.sign(hash_obj))
return signature
if __name__ == '__main__':
data = "phone=15811352072×tamp=1612496512540&device=Android"
res_sign1 = RSA_sign(data)
signature = res_sign1.decode('utf8')
print(signature)
SHA256withRSA签名
from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import MD5, SHA1, SHA256
import base64
from flask import current_app
import warnings
warnings.filterwarnings("ignore")
def RSA_sign(data):
privateKey = '''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'''
private_keyBytes = base64.b64decode(privateKey)
priKey = RSA.importKey(private_keyBytes)
# priKey = RSA.importKey(privateKey)
signer = PKCS1_v1_5.new(priKey,)
# SIGNATURE_ALGORITHM = "MD5withRSA"
# hash_obj = MD5.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA1withRSA"
# hash_obj = SHA1.new(data.encode('utf-8'))
# SIGNATURE_ALGORITHM = "SHA256withRSA"
hash_obj = SHA256.new(data.encode('utf-8'))
signature = base64.b64encode(signer.sign(hash_obj))
return signature
if __name__ == '__main__':
data = "phone=15811352072×tamp=1612496512540&device=Android"
res_sign1 = RSA_sign(data)
signature = res_sign1.decode('utf8')
print(signature)
最原始方法生成公钥和私钥生成通过(crtCoefficient,primeExponentP,primeP,modulus.....)
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives.asymmetric import rsa
from cryptography.hazmat.primitives import serialization
from cryptography.hazmat.primitives.asymmetric import padding
import base64
import binascii
"""
"crtCoefficient": 84432856058147832764138703472538317942464795044718601494587194148378563942685,
"primeExponentP": 55430473883101152246097615323756881862950432952434504984590276578045386834041,
"primeExponentQ": 41230473446336148758497170998210312513410109720579275453308960734626604833351,
"primeP": 109910049826842557628963433845850622251367013324570378590557090526907918339059,
"primeQ": 106061213575088596820097699717773256317123615840075518129430834072505546216719,
"publicExponent": 65537,
"modulus": 11657193268733377953496174345085266431511790176736829620324311319483544845433376888008449023832068012445414318729055242605500539982129558003843075736527421,
"privateExponent": 3398954883077133822319581237472486629533832773658606240974980011352534575146593099441248529746198644134125073285288483505741834384822184028018785454859181
"""
def gen_rsa_keypair():
d = 3398954883077133822319581237472486629533832773658606240974980011352534575146593099441248529746198644134125073285288483505741834384822184028018785454859181
dmp1 = 55430473883101152246097615323756881862950432952434504984590276578045386834041
dmq1 = 41230473446336148758497170998210312513410109720579275453308960734626604833351
iqmp = 84432856058147832764138703472538317942464795044718601494587194148378563942685
p = 109910049826842557628963433845850622251367013324570378590557090526907918339059
q = 106061213575088596820097699717773256317123615840075518129430834072505546216719
# public key numbers
e = 65537
n = 11657193268733377953496174345085266431511790176736829620324311319483544845433376888008449023832068012445414318729055242605500539982129558003843075736527421
public_numbers = rsa.RSAPublicNumbers(e, n)
private_numbers = rsa.RSAPrivateNumbers(p, q, d, dmp1, dmq1, iqmp,public_numbers)
private_key = default_backend().load_rsa_private_numbers(private_numbers)
pubkey = public_numbers.public_key(default_backend())
puem = pubkey.public_bytes(
encoding=serialization.Encoding.PEM,
format=serialization.PublicFormat.SubjectPublicKeyInfo
)
# 将PEM个数的数据写入文本文件中
with open("pu_key.pem", 'w+') as f:
f.writelines(puem.decode())
rpem = private_key.private_bytes(encoding=serialization.Encoding.PEM,
format=serialization.PrivateFormat.TraditionalOpenSSL,
encryption_algorithm=serialization.NoEncryption())
with open("pr_key.pem", 'w+') as f:
f.writelines(rpem.decode())
return
if __name__ == '__main__':
gen_rsa_keypair()
DES
简介
这是一个分组加密算法，解密和加密是同一个算法,可逆的
DES加密与解密以及hex输出和bs64格式输出
import pyDes
import base64
Key = "12345678" #加密的key
Iv = None #偏移量
def bytesToHexString(bs):
'''
bytes转16进制
'''
return ''.join(['%02X ' % b for b in bs])
def hexStringTobytes(str):
'''16进制转bytes'''
str = str.replace(" ", "")
return bytes.fromhex(str)
# 加密
def encrypt_str(data):
# 加密方法
#padmode填充方式
#pyDes.ECB模式
method = pyDes.des(Key, pyDes.ECB, Iv, pad=None, padmode=pyDes.PAD_PKCS5)
# 执行加密码 hex输出
k = method.encrypt(data)
data = bytesToHexString(k).replace(' ','')
#bs64手粗
#data =base64.b64encode(k)
return data
# 解密
def decrypt_str(data):
method = pyDes.des(Key, pyDes.ECB, Iv, pad=None, padmode=pyDes.PAD_PKCS5)
k =hexStringTobytes(data)
#bs64
#k = base64.b64decode(data)
return method.decrypt(k)
Encrypt = encrypt_str("aaa")
print(Encrypt)
Decrypt = decrypt_str(Encrypt)
print(Decrypt)
3DES
import hashlib, base64
import json
from cryptography.hazmat.primitives.padding import PKCS7
from cryptography.hazmat.primitives.ciphers import algorithms
from Crypto.Cipher import DES3
def pkcs7padding(text):
"""
明文使用PKCS7填充
最终调用DES3加密方法时，传入的是一个byte数组，要求是16的整数倍，因此需要对明文进行处理
:param text: 待加密内容(明文)
:return:
"""
bs = DES3.block_size # 16
length = len(text)
bytes_length = len(bytes(text, encoding='utf-8'))
# tips：utf-8编码时，英文占1个byte，而中文占3个byte
padding_size = length if (bytes_length == length) else bytes_length
padding = bs - padding_size % bs
# tips：chr(padding)看与其它语言的约定，有的会使用'\0'
padding_text = chr(padding) * padding
return text + padding_text
def pkcs7_unpad(content):
"""
解密时候用
:param content:
:return:
"""
if not isinstance(content, bytes):
content = content.encode()
pad = PKCS7(algorithms.DES3.block_size).unpadder()
pad_content = pad.update(content) + pad.finalize()
return pad_content
def encrypt(key, content):
"""
DES3加密
key,iv使用同一个
模式cbc
填充pkcs7
:param key: 密钥
:param content: 加密内容
:return:
"""
key_bytes = bytes(key, encoding='utf-8')
iv = key_bytes
cipher = DES3.new(key_bytes, DES3.MODE_ECB)
# 处理明文
content_padding = pkcs7padding(content)
# 加密
encrypt_bytes = cipher.encrypt(bytes(content_padding, encoding='utf-8'))
# 重新编码
result = str(base64.b64encode(encrypt_bytes), encoding='utf-8')
return result
def decrypt(key,text):
key_bytes = bytes(key, encoding='utf-8')
iv = key_bytes
cryptos = DES3.new(key_bytes, DES3.MODE_ECB)
data = cryptos.decrypt(text)
return json.loads(pkcs7_unpad(data))
AES
简介
和DES差不多,可逆的
AES_ECB_pkcs5padding(该模板不兼容中文)
from Crypto.Cipher import AES
import base64
class Aes_ECB(object):
def __init__(self):
self.key = 'XXXXXXXXXXX' #秘钥
self.MODE = AES.MODE_ECB
self.BS = AES.block_size
self.pad = lambda s: s + (self.BS - len(s) % self.BS) * chr(self.BS - len(s) % self.BS)
self.unpad = lambda s: s[0:-ord(s[-1])]
# str不是16的倍数那就补足为16的倍数
def add_to_16(value):
while len(value) % 16 != 0:
value += '\0'
return str.encode(value) # 返回bytes
def AES_encrypt(self, text):
aes = AES.new(Aes_ECB.add_to_16(self.key), self.MODE) # 初始化加密器
encrypted_text = str(base64.encodebytes(aes.encrypt(Aes_ECB.add_to_16(self.pad(text)))),
encoding='utf-8').replace('\n', '') # 这个replace大家可以先不用，然后在调试出来的结果中看是否有'\n'换行符
# 执行加密并转码返回bytes
return encrypted_text
AES_ECB_pkcs7padding(支持中文)
import hashlib, base64
from Crypto.Cipher import AES
from cryptography.hazmat.primitives.padding import PKCS7
from cryptography.hazmat.primitives.ciphers import algorithms
def pkcs7padding(text):
"""
明文使用PKCS7填充
最终调用AES加密方法时，传入的是一个byte数组，要求是16的整数倍，因此需要对明文进行处理
:param text: 待加密内容(明文)
:return:
"""
bs = AES.block_size # 16
length = len(text)
bytes_length = len(bytes(text, encoding='utf-8'))
# tips：utf-8编码时，英文占1个byte，而中文占3个byte
padding_size = length if (bytes_length == length) else bytes_length
padding = bs - padding_size % bs
# tips：chr(padding)看与其它语言的约定，有的会使用'\0'
padding_text = chr(padding) * padding
return text + padding_text
def pkcs7_unpad(content):
"""
解密时候用
:param content:
:return:
"""
if not isinstance(content, bytes):
content = content.encode()
pad = PKCS7(algorithms.AES.block_size).unpadder()
pad_content = pad.update(content) + pad.finalize()
return pad_content
def encrypt(key, content):
"""
AES加密
key,iv使用同一个
模式cbc
填充pkcs7
:param key: 密钥
:param content: 加密内容
:return:
"""
key_bytes = bytes(key, encoding='utf-8')
iv = key_bytes
cipher = AES.new(key_bytes, AES.MODE_ECB)
# 处理明文
content_padding = pkcs7padding(content)
# 加密
encrypt_bytes = cipher.encrypt(bytes(content_padding, encoding='utf-8'))
# 重新编码
result = str(base64.b64encode(encrypt_bytes), encoding='utf-8')
return result
def decrypt(key,text):
key_bytes = bytes(key, encoding='utf-8')
iv = key_bytes
cryptos = AES.new(key_bytes, AES.MODE_ECB)
data = cryptos.decrypt(text)
return json.loads(pkcs7_unpad(data))
识别是AES_128\192\256怎么识别
根据key的长度进行识别
128 16位
192 24位
256 32位
#基本上不足的部分都是以0进行填充
ECB和CBC在代码实现上的区别
CBC相比ECB多一个偏移量,至于其他地方代码区别不大
gzip输出解密
# -*- coding: utf-8 -*-
from cryptography.hazmat.primitives.ciphers import algorithms
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.ciphers import modes
from cryptography.hazmat.backends import default_backend
class AES_GZIP:
@staticmethod
def gzip_decode(content):
buf = io.BytesIO(content)
gf = gzip.GzipFile(fileobj=buf)
content = gf.read()
return content
def pwd_decrypt(self, content):
key = b'XXXX'
iv = b'XXXXX'
cipher = Cipher(algorithms.AES(key), modes.CBC(iv), backend=default_backend())
decryptor = cipher.decryptor()
data = decryptor.update(content)
return self.gzip_decode(data)
AES 完美使用填充
import base64
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad
def aes_encode(data):
"""
AES加密
:param data:
:return:
"""
cryptor = AES.new('YAPQCudCMqGFjd1Z'.encode(), AES.MODE_ECB)
pad_pkcs7 = pad(data.encode('utf-8'), AES.block_size, style='pkcs7')
ciphertext = cryptor.encrypt(pad_pkcs7)
return base64.b64encode(ciphertext).decode()
def aes_decode(data):
"""
AES加密
:param data:
:return:
"""
cryptor = AES.new('YAPQCudCMqGFjd1Z'.encode(), AES.MODE_ECB)
plain_text = cryptor.decrypt(base64.b64decode(data))
plain_text = plain_text.decode()
# TODO 记录一下 这样可以去除 尾部乱字符
padding_len = ord(plain_text[len(plain_text) - 1])
return plain_text[0:-padding_len]
SM2/SM4
GMSSL模块介绍
GmSSL是一个开源的加密包的python实现，支持SM2/SM3/SM4等国密(国家商用密码)算法、项目采用对商业应用友好的类BSD开源许可证，开源且可以用于闭源的商业应用。
安装模块
pip install gmssl
https://github.com/duanhongyi/gmssl/blob/master/README.md官方文档
SM2算法
RSA算法的危机在于其存在亚指数算法，对ECC算法而言一般没有亚指数攻击算法 SM2椭圆曲线公钥密码算法：我国自主知识产权的商用密码算法，是ECC（Elliptic Curve Cryptosystem）算法的一种，基于椭圆曲线离散对数问题，计算复杂度是指数级，求解难度较大，同等安全程度要求下，椭圆曲线密码较其他公钥算法所需密钥长度小很多。
gmssl是包含国密SM2算法的Python实现， 提供了encrypt、decrypt等函数用于加密解密， 用法如下：
- 初始化CryptSM2
import base64
import binascii
from gmssl import sm2, func
#16进制的公钥和私钥
private_key = '00B9AB0B828FF68872F21A837FC303668428DEA11DCD1B24429D0C99E24EED83D5'
public_key = 'B9C9A6E04E9C91F7BA880429273747D7EF5DDEB0BB2FF6317EB00BEF331A83081A6994B8993F3F5D6EADDDB81872266C87C018FB4162F5AF347B483E24620207'
sm2_crypt = sm2.CryptSM2(
public_key=public_key, private_key=private_key)
- encrypt和decrypt
#数据和加密后数据为bytes类型
data = b"111"
enc_data = sm2_crypt.encrypt(data)
dec_data =sm2_crypt.decrypt(enc_data)
assert dec_data == data
- sign和verify
data = b"111" # bytes类型
random_hex_str = func.random_hex(sm2_crypt.para_len)
sign = sm2_crypt.sign(data, random_hex_str) # 16进制
assert sm2_crypt.verify(sign, data) # 16进制
SM4算法
国密SM4(无线局域网SMS4)算法， 一个分组算法， 分组长度为
128bit， 密钥长度为128bit， 算法具体内容参照SM4算法。
gmssl是包含国密SM4算法的Python实现， 提供了encrypt_ecb、decrypt_ecb、encrypt_cbc、decrypt_cbc等函数用于加密解密， 用法如下：
- 初始化CryptSM4
from gmssl.sm4 import CryptSM4, SM4_ENCRYPT, SM4_DECRYPT
key = b'3l5butlj26hvv313'
value = b'111' # bytes类型
iv = b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00' # bytes类型
crypt_sm4 = CryptSM4()
- encrypt_ecb和decrypt_ecb
crypt_sm4.set_key(key, SM4_ENCRYPT)
encrypt_value = crypt_sm4.crypt_ecb(value) # bytes类型
crypt_sm4.set_key(key, SM4_DECRYPT)
decrypt_value = crypt_sm4.crypt_ecb(encrypt_value) # bytes类型
assert value == decrypt_value
- encrypt_cbc和decrypt_cbc
crypt_sm4.set_key(key, SM4_ENCRYPT)
encrypt_value = crypt_sm4.crypt_cbc(iv , value) # bytes类型
crypt_sm4.set_key(key, SM4_DECRYPT)
decrypt_value = crypt_sm4.crypt_cbc(iv , encrypt_value) # bytes类型
assert value == decrypt_value
其他模块
base64
import base64 #base64也是用来加密的，但是这个是可以解密的
s = "password"
print(base64.b64encode(s.encode()) ) #加密
uuid
#有时候你会看到一些比如xxxx-xxxx-xxx-xxx误以为是加密其实很多是uuid模块自动生成的
随机数格式为:xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx
python的uuid模块提供UUID类和函数uuid1(), uuid3(), uuid4(), uuid5()
1.uuid.uuid1([node[, clock_seq]])
基于时间戳
使用主机ID, 序列号, 和当前时间来生成UUID, 可保证全球范围的唯一性. 但由于使用该方法生成的UUID中包含有主机的网络地址, 因此可能危及隐私. 该函数有两个参数, 如果 node 参数未指定, 系统将会自动调用 getnode() 函数来获取主机的硬件地址. 如果 clock_seq 参数未指定系统会使用一个随机产生的14位序列号来代替.
2.uuid.uuid3(namespace, name)
基于名字的MD5散列值
通过计算命名空间和名字的MD5散列值来生成UUID, 可以保证同一命名空间中不同名字的唯一性和不同命名空间的唯一性, 但同一命名空间的同一名字生成的UUID相同.
3.uuid.uuid4()
基于随机数
通过随机数来生成UUID. 使用的是伪随机数有一定的重复概率.
4.uuid.uuid5(namespace, name)
基于名字的SHA-1散列值
MD5加盐
import hashlib
#注意加密顺序
m=hashlib.md5('加密内容'.encode('utf8'))
m.update(b"盐")
sign = m.hexdigest()
字符串和16进制字符串之间转换
import binascii
binascii.b2a_hex('字符串'.encode()) 输出b'e5ad97e7aca6e4b8b2'
binascii.a2b_hex('e5ad97e7aca6e4b8b2').decode() 输出 '字符串'
HmacSHA256加密算法
from hashlib import sha256
import hmac
def get_sign(data, key):
key = key.encode('utf-8')
message = data.encode('utf-8')
sign = base64.b64encode(hmac.new(key, message, digestmod=sha256).digest())
sign = str(sign, 'utf-8')
print(sign)
return sign
转载
转载于 小小咸鱼YwY
