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widen r * p to u64 in scrypt params bounds check #908

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widen r * p to u64 in scrypt params bounds check #908

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2 changes: 1 addition & 1 deletion scrypt/src/params.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -96,7 +96,7 @@ impl Params {
// check: p <= ((2^32-1) * 32) / (128 * r)
// It takes a bit of re-arranging to get the check above into this form,
// but it is indeed the same.
if r * p >= 0x4000_0000 {
if u64::from(r) * u64::from(p) >= 0x4000_0000 {
return Err(InvalidParams);
}

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