Robert Relyea wrote:
NZzi wrote:
hi all:
I want to use private key to encrypt a message,
and decrypt with public key.
Are you encrypting data or a symmetric Key?
Most of the nss code that does these operations does so on actual
symetric keys (which are then used to do additional
encryption/decryption/macing).
In that case they are using the PK11_PubWrapSymKey() and
PK11_PubUnwrapSymKey().
If i use symmetric key to encrypt a license and use private key
to encrypt the symmetric key, other people can have my public
key.
I think he can hack my program to get the symmetric key,
when my program recover the license using the symmetric key
decrypted by public key.
He can write a new license and re-generate the license to let
the software use forever, how can I forbid this?
bob
[snip...]
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