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标题: 【上海校区】python3 hashlib库sha256、pbkdf2_hmac、blake2b基本用法 [打印本页]

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作者: Mr.TR    时间: 2018-12-16 18:24
标题: 【上海校区】python3 hashlib库sha256、pbkdf2_hmac、blake2b基本用法
hashlib.sha256

[Python] 纯文本查看 复制代码

import hashlib

 

x = hashlib.sha256()

x.update(b"asd")

print("x_1 = " + x.hexdigest())

 

x = hashlib.sha256()

x.update("asd".encode())

print("x_2 = " + x.hexdigest())

 

x = hashlib.sha256()

x.update(b"a")

x.update(b"s")

x.update(b"d")

print("x_3 = " + x.hexdigest())

 

y = hashlib.sha256(b"asd").hexdigest()

print("y_1 = " + y)

 

z = hashlib.new("sha256")

z.update(b"asd")

print("z_1 = " + z.hexdigest())

运行结果：

[Python] 纯文本查看 复制代码

x_1 = 688787d8ff144c502c7f5cffaafe2cc588d86079f9de88304c26b0cb99ce91c6

x_2 = 688787d8ff144c502c7f5cffaafe2cc588d86079f9de88304c26b0cb99ce91c6

x_3 = 688787d8ff144c502c7f5cffaafe2cc588d86079f9de88304c26b0cb99ce91c6

y_1 = 688787d8ff144c502c7f5cffaafe2cc588d86079f9de88304c26b0cb99ce91c6

z_1 = 688787d8ff144c502c7f5cffaafe2cc588d86079f9de88304c26b0cb99ce91c6

hashlib.pbkdf2_hmac加盐

[Python] 纯文本查看 复制代码

import hashlib

import binascii

import os

 

x = hashlib.pbkdf2_hmac("sha256", b"asd", b"", 1)

print("x_1 = " + binascii.hexlify(x).decode())

 

x = hashlib.pbkdf2_hmac("sha256", b"asd", b"", 1)# 相同盐值

print("x_2 = " + binascii.hexlify(x).decode())

 

x = hashlib.pbkdf2_hmac("sha256", b"asd", b"", 10)  # 相同盐值，不同迭代次数

print("x_3 = " + binascii.hexlify(x).decode())

 

x = hashlib.pbkdf2_hmac("sha256", b"asd", b"dsa", 1)# 不同盐值，相同迭代次数

print("x_4 = " + binascii.hexlify(x).decode())

 

y = hashlib.pbkdf2_hmac("sha256", b"asd", os.urandom(16), 1) # 随机生成盐值

print("y_1 = " + binascii.hexlify(y).decode())

运行结果：

[Python] 纯文本查看 复制代码

x_1 = b930d78b395bde9a074f5f762bc7c64aa85a05cd74dbf22d25c2357c6a59f883

x_2 = b930d78b395bde9a074f5f762bc7c64aa85a05cd74dbf22d25c2357c6a59f883

x_3 = 96c27cfb86a1b4a9e9c9e8ae1f8c3c3188c1c23ff268e410a9a6f7bca3a35f67

x_4 = f9653d10a4cc5b956fb030b1b420f8fdf145adfdd28650e007dd912b8e2a6c5a

y_1 = 338208350ccb7c6c99c582f83fda351801f79cd62def6799456a06da6598f567

hashlib.blake2b

[Python] 纯文本查看 复制代码

import hashlib

import hmac

import cryptography.fernet

 

x = hashlib.blake2b()

x.update(b"asd")

print("x = " + x.hexdigest())

print("true" if hmac.compare_digest(x.hexdigest(), hashlib.blake2b(b"asd").hexdigest()) else "false")

 

y = hashlib.blake2b(digest_size=5, key=b"", salt=b"", person=b"") # 键控哈希、加盐、个性化

y.update(b"asd")

print("y = " + y.hexdigest())

print("true" if hmac.compare_digest(y.hexdigest(), hashlib.blake2b(b"asd", digest_size=5, key=b"", salt=b"", person=b"").hexdigest()) else "false")

 

a = cryptography.fernet.Fernet.generate_key()# 自动生成密钥

b = cryptography.fernet.Fernet(a)

c = b.encrypt("asd".encode())# 使用生成的密钥加密

print(c)

d = b.decrypt(c) # 使用生成的密钥解密

print(d.decode())

 

z = hmac.new(a, digestmod=hashlib.blake2b)  # 使用本地密钥进行加密

z.update(b"asd")

print("z = " + z.hexdigest())

print("true" if hmac.compare_digest(z.hexdigest(), hmac.new(key=a, msg=b"asd", digestmod=hashlib.blake2b).hexdigest()) else "false")

运行结果：

[Python] 纯文本查看 复制代码

x = e4139471a1800a05b5e02b56669f025d01e33c5655153a4faa29f694f7849c63f97577fcc3e397d1138cf4640e0c2053e74a7af646598310d076dc6f15d1af50

true

y = 940ba28546

true

b'gAAAAABbM9urQSo8QilnHGDUEVL-CCFOkkW4yDOc10yoAp4B-tUabQZw6y8BNbATty8oC-Om555xF8Xr4rQxRDgYkIZ67u9lsQ=='

asd

z = cc18cfb36af92c64bf9a55114e22d178a05a6f10bfe9d1bf7067acb108146edd1ea595cd46d8fbdda58a334d6444a22d404774162f7d675a8ef59f70b983af4e

true

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作者: 不二晨    时间: 2018-12-18 17:48
奈斯

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