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用公钥验证的时候必须要提供原始数据吗？这有点不理解

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#1 Created at ... [Delete] [Delete and Lock User]

 // 用公钥验证:

        Signature v = Signature.getInstance("SHA1withRSA");

        v.initVerify(pk);

        v.update(message);

廿二日晴

#2 Created at ... [Delete] [Delete and Lock User]

提供原始数据是为了验证内容的一致性

廿二日晴

#3 Created at ... [Delete] [Delete and Lock User]

签合同的时候也不可能只有一份吧，最少两份

Red

#4 Created at ... [Delete] [Delete and Lock User]

那个信息是公开的吧

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