请教一个 Python 密码库 cryptography/Cryptodome 签名的问题 - V2EX
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smdbh

请教一个 Python 密码库 cryptography/Cryptodome 签名的问题

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  •   smdbh Oct 17, 2024 4832 views
    This topic created in 562 days ago, the information mentioned may be changed or developed.

    我的目的是签名结果和服务器结果一致 我听说签名可能加随机数,每次结果都不一样,但实际中,我先使用了 cryptography 库

     signature = privateKey.sign(data, padding.PKCS1v15(), hashes.SHA256()) 

    每次结果都一致,且与服务器结果一致 , 我想简化 import ,都使用 Crypto 或 cryptodome ,使用 cryptdome 的代码

     dataHash = SHA256.new(data) signature = PKCS1_v1_5.new(privateKey).sign(dataHash) 

    结果每次都不一样,应该是由随机数的参与

    我想问下 Crypto 或 cryptodome 等其他库能否有和 cryptography 一样每次生成不变签名的函数实现方法?谢谢

    1 replies    2024-10-18 15:53:55 +08:00
    GiggleSmile
        1
    GiggleSmile  
       Oct 18, 2024
    RFC8017 中 pkcs1.5 签名方案,没有使用随机数,即相同数据,签名值相同。pycryptodome 库中的 pkcs1.5 的签名算法,源码实现与 rfc 规定一致,我跑几遍,签名值均未变化。也就是说,你自己写的代码有问题。单独调没任何问题,而且使用 cryptography 库签出来的值可以与 cryptodome 库对的上。
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