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https://github.com/logos-storage/nim-bearssl.git
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f0ea93f77e
Helpers to generate random numbers, including simple Nim types * disable C++ tests * there are too many `const` vs `non-const` issues to run these tests - C++ never actually worked * add generateBytes to make fresh seqs Co-authored-by: Mamy Ratsimbazafy <mamy_github@numforge.co> Co-authored-by: Etan Kissling <etan@status.im>
63 lines
1.4 KiB
Nim
63 lines
1.4 KiB
Nim
import
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unittest2,
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../bearssl/rand
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{.used.}
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suite "random":
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test "simple random ops":
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# Some of these tests may end up triggering false fails, but given their
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# probability, should be fine
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let rng = HmacDrbgContext.new()
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var v: array[1024, byte]
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rng[].generate(v)
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let v2 = rng[].generate(array[1024, byte])
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check:
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v != default(array[1024, byte]) # probable
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v2 != default(array[1024, byte]) # probable
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for i in 0..<1000:
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doAssert cast[int](rng[].generate(bool)) in [0, 1]
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var bools: array[64 * 1024, bool]
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rng[].generate(bools)
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check:
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true in bools # probable
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false in bools # probable
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var
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xxx = newSeq[int](1024)
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yyy = xxx
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rng[].generate(xxx)
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check:
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xxx != yyy # probable
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test "seed":
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for seed in [@[byte 0], @[byte 1], @[byte 1, 1], @[byte 42, 13, 37]]:
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var
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rng = HmacDrbgContext.init(seed)
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rng2 = HmacDrbgContext.init(seed)
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check:
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rng.generate(uint64) == rng2.generate(uint64)
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for seed in [@[0], @[1], @[1, 1], @[42, 1337, -5]]:
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var
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rng = HmacDrbgContext.init(seed)
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rng2 = HmacDrbgContext.init(seed)
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check:
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rng.generate(uint64) == rng2.generate(uint64)
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test "antiseed":
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var
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rng = HmacDrbgContext.init([0])
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rng2 = HmacDrbgContext.init([1])
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check:
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rng.generate(array[1024, byte]) != rng2.generate(array[1024, byte])
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