When the algorithms open, the decryption key can not be calculated by encryption key so the encryption key could be open, only keep decryption key secret, that is public key.
当算法公开时，在计算上不可能由加密密钥求解解密密钥，因而可以将加密密钥公开，即公开密钥。
When the algorithms open, the decryption key can not be calculated by encryption key so the encryption key could be open, only keep decryption key secret, that is public key.
当算法公开时，在计算上不可能由加密密钥求解解密密钥，因而可以将加密密钥公开，即公开密钥。
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