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LibCrypto: Remove all uses of VLAs

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This removes all uses of VLAs with either Vectors with inline capacity
for the expected soft upper bound, or the occasional heap allocation.
This commit is contained in:
Ali Mohammad Pur
2021-05-13 12:13:11 +04:30
committed by Andreas Kling
parent 0d50d3ed1e
commit b05beb79d4
7 changed files with 41 additions and 36 deletions
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7
Userland/Libraries/LibCrypto/NumberTheory/ModularFunctions.cpp
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@@ -273,9 +273,10 @@ UnsignedBigInteger random_number(const UnsignedBigInteger& min, const UnsignedBi
UnsignedBigInteger base;
auto size = range.trimmed_length() * sizeof(u32) + 2;
// "+2" is intentional (see below).
// Also, if we're about to crash anyway, at least produce a nice error:
VERIFY(size < 8 * MiB);
u8 buf[size];
ByteBuffer buffer;
buffer.grow(size);
auto* buf = buffer.data();
fill_with_random(buf, size);
UnsignedBigInteger random { buf, size };
// At this point, `random` is a large number, in the range [0, 256^size).