You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
105 lines
2.8 KiB
105 lines
2.8 KiB
#!/usr/bin/python
|
|
# -*- coding: UTF-8 -*-
|
|
import rsa
|
|
import base64
|
|
|
|
__pem_begin = '-----BEGIN RSA PRIVATE KEY-----\n'
|
|
__pem_end = '\n-----END RSA PRIVATE KEY-----'
|
|
|
|
|
|
def create_sign(all_params, private_key, sign_type):
|
|
"""创建签名
|
|
|
|
:param all_params: 参数
|
|
:type all_params: dict
|
|
|
|
:param private_key: 私钥字符串
|
|
:type private_key: str
|
|
|
|
:param sign_type: 签名类型，'RSA', 'RSA2'二选一
|
|
:type sign_type: str
|
|
|
|
:return: 返回签名内容
|
|
:rtype: str
|
|
"""
|
|
sign_content = get_sign_content(all_params)
|
|
private_key = _format_private_key(private_key)
|
|
return sign(sign_content, private_key, sign_type)
|
|
|
|
|
|
def _format_private_key(private_key):
|
|
if not private_key.startswith(__pem_begin):
|
|
private_key = __pem_begin + private_key
|
|
if not private_key.endswith(__pem_end):
|
|
private_key = private_key + __pem_end
|
|
return private_key
|
|
|
|
|
|
def get_sign_content(params):
|
|
"""构建签名内容
|
|
|
|
1.筛选并排序
|
|
获取所有请求参数，不包括字节类型参数，如文件、字节流，剔除sign字段，剔除值为空的参数，并按照参数名ASCII码递增排序（字母升序排序），
|
|
如果遇到相同字符则按照第二个字符的键值ASCII码递增排序，以此类推。
|
|
|
|
2.拼接
|
|
将排序后的参数与其对应值，组合成“参数=参数值”的格式，并且把这些参数用&字符连接起来，此时生成的字符串为待签名字符串。
|
|
|
|
:param params: 参数
|
|
:type params: dict
|
|
|
|
:return: 返回签名内容
|
|
:rtype: str
|
|
"""
|
|
keys = params.keys()
|
|
keys.sort()
|
|
result = []
|
|
for key in keys:
|
|
value = str(params.get(key))
|
|
if len(value) > 0:
|
|
result.append(key + '=' + value)
|
|
|
|
return '&'.join(result)
|
|
|
|
|
|
def sign(content, private_key, sign_type):
|
|
"""签名
|
|
|
|
:param content: 签名内容
|
|
:type content: str
|
|
|
|
:param private_key: 私钥字符串
|
|
:type private_key: str
|
|
|
|
:param sign_type: 签名类型，'RSA', 'RSA2'二选一
|
|
:type sign_type: str
|
|
|
|
:return: 返回签名内容
|
|
:rtype: str
|
|
"""
|
|
if sign_type.upper() == 'RSA':
|
|
return rsa_sign(content, private_key, 'SHA-1')
|
|
elif sign_type.upper() == 'RSA2':
|
|
return rsa_sign(content, private_key, 'SHA-256')
|
|
else:
|
|
raise Exception('sign_type错误')
|
|
|
|
|
|
def rsa_sign(content, private_key, _hash):
|
|
"""SHAWithRSA
|
|
|
|
:param content: 签名内容
|
|
:type content: str
|
|
|
|
:param private_key: 私钥
|
|
:type private_key: str
|
|
|
|
:param _hash: hash算法，如：SHA-1,SHA-256
|
|
:type _hash: str
|
|
|
|
:return: 签名内容
|
|
:rtype: str
|
|
"""
|
|
pri_key = rsa.PrivateKey.load_pkcs1(private_key.encode('utf-8'))
|
|
sign_result = rsa.sign(content, pri_key, _hash)
|
|
return base64.b64encode(sign_result)
|
|
|