49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
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// +build gofuzz
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package brontidefuzz
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import (
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"bytes"
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"math"
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)
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// Fuzz_random_resp_enc_dec is a go-fuzz harness that tests round-trip
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// encryption and decryption between the responder and the initiator.
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func Fuzz_random_resp_enc_dec(data []byte) int {
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// Ensure that length of message is not greater than max allowed size.
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if len(data) > math.MaxUint16 {
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return 0
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}
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// This will return brontide machines with random keys.
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initiator, responder := getBrontideMachines()
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// Complete the brontide handshake.
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completeHandshake(initiator, responder)
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var b bytes.Buffer
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// Encrypt the message using WriteMessage w/ responder machine.
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if err := responder.WriteMessage(data); err != nil {
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nilAndPanic(initiator, responder, err)
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}
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// Flush the encrypted message w/ responder machine.
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if _, err := responder.Flush(&b); err != nil {
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nilAndPanic(initiator, responder, err)
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}
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// Decrypt the ciphertext using ReadMessage w/ initiator machine.
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plaintext, err := initiator.ReadMessage(&b)
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if err != nil {
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nilAndPanic(initiator, responder, err)
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}
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// Check that the decrypted message and the original message are equal.
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if !bytes.Equal(data, plaintext) {
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nilAndPanic(initiator, responder, nil)
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}
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return 1
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}
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