I am sorry for my unclear questions.
In a scenario that the signature is stored in PKCS#7 format which is encrypted
with the recipient's public key. While the data is encrypted with 3DES.
If the data are to be stored in its encryption form and only decrypted when its
in use, does the verification of encrypted data's signature have the same level
of security of the decrypted data's signature? The reason for this is that if
the data have been corrupted, there is no point to decrypt them.
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