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meiqiasdk-push-signature-example's Issues

java 推送签名问题

请给我一个 原生的加密串,和 加密之后的 签名,例子,java 版本的签名,和 美洽返回的签名,对不上。

在文档中应提示用户使用安全的方式校验 HMAC 签名

不安全的校验方式可能导致用户受到 timing attack,(E.G. http://codahale.com/a-lesson-in-timing-attacks/https://docs.python.org/2/library/hmac.html#hmac.HMAC.digest ),我觉得可以写一个供参考的校验算法,比如:

class MTSigner(object):

    def __init__(self, raw_data, key):
        self.raw_data = raw_data
        self.key = key

    def sign(self):
        hash_str = hmac.new(self.key, self.raw_data, hashlib.sha1).hexdigest()
        sign_str = base64.b64encode(hash_str)
        return "meiqia_sign:" + sign_str

    def verify(self, signature):
        calced_sign = self.sign()
        return hmac.compare_digest(calced_sign, signature)

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