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Diffstat (limited to 'chall/description')
| -rw-r--r-- | chall/description | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/chall/description b/chall/description new file mode 100644 index 0000000..795005f --- /dev/null +++ b/chall/description @@ -0,0 +1,5 @@ +If you give a user some data and read it from the user later (e.g. when using cookies), you have to ensure the user has not tampered with it. + +This challenge implements a simple, but insecure MAC scheme. + +https://en.wikipedia.org/wiki/Message_authentication_code |