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42 lines
2 KiB
Markdown
42 lines
2 KiB
Markdown
This is a work in progress, but good results currently.
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Harness code is in fuzz/fuzz_targets/*. The Cargo.toml file specifies that overflow-checks and
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debug-assertions are enabled (so the fuzzer can find these panics).
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See <https://rust-fuzz.github.io/book/introduction.html>
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~~~
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$ cd fuzz # this directory; you may need to install cargo fuzz
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$ rustup default nightly
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$ mkdir -p corpus/fuzz_sign
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$ dd if=/dev/zero bs=1 count=6292 > corpus/fuzz_sign/seed0
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$ for i in $(seq 1 9); do head -c 6292 </dev/urandom > corpus/fuzz_sign/seed$i; done
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$ mkdir -p corpus/fuzz_verify
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$ dd if=/dev/zero bs=1 count=6292 > corpus/fuzz_verify/seed0
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$ for i in $(seq 0 9); do head -c 6292 </dev/urandom > corpus/fuzz_verify/seed$i; done
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$ cargo fuzz run fuzz_sign -j 4 -- -max_total_time=1000
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...
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#205: cov: 2486 ft: 4394 corp: 10 exec/s: 0 oom/timeout/crash: 0/0/0 time: 965s job: 51 dft_time: 0
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#209: cov: 2486 ft: 4394 corp: 10 exec/s: 0 oom/timeout/crash: 0/0/0 time: 965s job: 49 dft_time: 0
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#215: cov: 2486 ft: 4394 corp: 10 exec/s: 0 oom/timeout/crash: 0/0/0 time: 980s job: 52 dft_time: 0
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#219: cov: 2486 ft: 4394 corp: 10 exec/s: 0 oom/timeout/crash: 0/0/0 time: 1020s job: 54 dft_time: 0
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INFO: fuzzed for 1020 seconds, wrapping up soon
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INFO: exiting: 0 time: 1050s
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$ cargo fuzz run fuzz_verify -j 4 -- -max_total_time=1000
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...
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#307: cov: 18818 ft: 12996 corp: 30 exec/s 0 oom/timeout/crash: 0/0/0 time: 915s job: 57 dft_time: 0
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#314: cov: 18818 ft: 13023 corp: 32 exec/s 0 oom/timeout/crash: 0/0/0 time: 934s job: 58 dft_time: 0
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#321: cov: 18818 ft: 13040 corp: 33 exec/s 0 oom/timeout/crash: 0/0/0 time: 945s job: 59 dft_time: 0
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#328: cov: 18818 ft: 13063 corp: 34 exec/s 0 oom/timeout/crash: 0/0/0 time: 964s job: 60 dft_time: 0
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#336: cov: 18818 ft: 13078 corp: 35 exec/s 0 oom/timeout/crash: 0/0/0 time: 998s job: 61 dft_time: 0
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INFO: fuzzed for 1018 seconds, wrapping up soon
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INFO: exiting: 0 time: 1031s
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~~~
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Coverage status is a work-in-progress (note that verify also exercises signing); see FIPS 204 code for example runs
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