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Replace Math.random with crypto.getRandomValues for _system_number

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This commit is contained in:
Damian Tarnawski
2023-10-27 12:06:35 +02:00
parent 8b2f62000a
commit 49da19e013
3 changed files with 6 additions and 5 deletions
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core/crypto/rand_js.odin
+1 -1
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@@ -6,7 +6,7 @@ foreign odin_env {
env_rand_bytes :: proc "contextless" (buf: []byte) --- env_rand_bytes :: proc "contextless" (buf: []byte) ---
} }
_MAX_PER_CALL_BYTES :: 65536 _MAX_PER_CALL_BYTES :: 65536 // 64kiB
_rand_bytes :: proc(dst: []byte) { _rand_bytes :: proc(dst: []byte) {
dst := dst dst := dst
core/math/rand/system_js.odin
+5 -3
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@@ -2,11 +2,13 @@ package rand
foreign import "odin_env" foreign import "odin_env"
foreign odin_env { foreign odin_env {
@(link_name = "rand") @(link_name = "rand_bytes")
rand_f64 :: proc "contextless" () -> f64 --- env_rand_bytes :: proc "contextless" (buf: []byte) ---
} }
@(require_results) @(require_results)
_system_random :: proc() -> u64 { _system_random :: proc() -> u64 {
return u64(rand_f64() * 0x1fffffffffffff) buf: [8]u8
env_rand_bytes(buf[:])
return transmute(u64)buf
} }
vendor/wasm/js/runtime.js
Vendored
-1
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@@ -1350,7 +1350,6 @@ function odinSetupDefaultImports(wasmMemoryInterface, consoleElement) {
exp: Math.exp, exp: Math.exp,
ldexp: (x, exp) => x * Math.pow(2, exp), ldexp: (x, exp) => x * Math.pow(2, exp),
rand: Math.random,
rand_bytes: (ptr, len) => { rand_bytes: (ptr, len) => {
const view = new Uint8Array(wasmMemoryInterface.memory.buffer, ptr, len) const view = new Uint8Array(wasmMemoryInterface.memory.buffer, ptr, len)
crypto.getRandomValues(view) crypto.getRandomValues(view)