kem: add P-256 + Kyber768Draft00 hybrid #402
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armfazh
approved these changes
Feb 13, 2023
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| buf := make([]byte, sch.PrivateKeySize()) | ||
| _, _ = h.Read(buf) | ||
| rnd := bytes.NewReader(buf) | ||
| key, x, y, err := elliptic.GenerateKey(sch.curve, rnd) |
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Note that GenerateKey function can loop more than once, requesting more bytes from the reader.
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| buf := make([]byte, sch.PrivateKeySize()) | |
| _, _ = h.Read(buf) | |
| rnd := bytes.NewReader(buf) | |
| key, x, y, err := elliptic.GenerateKey(sch.curve, rnd) | |
| key, x, y, err := elliptic.GenerateKey(sch.curve, h) |
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Ah, good point. h doesn't implement io.Reader though.
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Ah, I can just use the xof package, nice.
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this doesn't address my comment.
you need to pass the xof object, and remove buf.
- xof already implements io.reader
- the issue is that
bufhas fixed size, but it is not guaranteed that reader will be called only one time. It could be called many times.
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You're not looking at the latest diff: there I fixed it. :)
Might be possible, yes. |
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