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https://github.com/logos-storage/nim-websock.git
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e4f00698ea
* Update http to use chronos http. * Add stream.nim file. * Address comments. * Fix CI failure. * Minor change. * Address comments. * Fix windows CI failing test. * minor cleanup * spacess * more idiomatic connect * use stew/base10 Co-authored-by: Dmitriy Ryajov <dryajov@gmail.com>
26 lines
848 B
Nim
26 lines
848 B
Nim
import bearssl
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## Random helpers: similar as in stdlib, but with BrHmacDrbgContext rng
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const randMax = 18_446_744_073_709_551_615'u64
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proc rand*(rng: var BrHmacDrbgContext, max: Natural): int =
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if max == 0: return 0
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var x: uint64
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while true:
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brHmacDrbgGenerate(addr rng, addr x, csize_t(sizeof(x)))
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if x < randMax - (randMax mod (uint64(max) + 1'u64)): # against modulo bias
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return int(x mod (uint64(max) + 1'u64))
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proc genMaskKey*(rng: ref BrHmacDrbgContext): array[4, char] =
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## Generates a random key of 4 random chars.
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proc r(): char = char(rand(rng[], 255))
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return [r(), r(), r(), r()]
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proc genWebSecKey*(rng: ref BrHmacDrbgContext): seq[byte] =
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var key = newSeq[byte](16)
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proc r(): byte = byte(rand(rng[], 255))
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## Generates a random key of 16 random chars.
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for i in 0..15:
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key.add(r())
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return key
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