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Disadvantages of Symmetric Cryptosystems. The following are the disadvantages of Symmetric Cryptosystems:
- Key transportation is one disadvantage of Symmetric Cryptosystems. From the sending system to the receiving system the secret key is to be transmitted before the actual message transmission. Electronic communication, in every means is insecure as it is not guarantee that no tapping communication channels can be tapped. Personal exchanging of key exchange is the only source.
- Repudiate digital signatures can not be provided
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