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deserialize encryption context should fail on malformed encryption context #57
Description
If the client deserialization receives a malformed ciphertext that defines the AAD length as 0 and then also defines a AAD fields as 0, the deserialization logic SHOULD raise an error. It does not. Instead, it accidentally interprets it as an empty encryption context.
Example malformed test vector:
b'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'
Activity
Fixed issue aws#57. Discovered strange behavior with mocks not allowi…
4gatepylon commentedon Aug 9, 2019
Dealt with it on PR #186.
acioc commentedon Dec 5, 2020
Closed stale PR for this issue