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Added rand_bytes for Windows in core:crypto

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This commit is contained in:
zhibog
2022-03-02 21:22:56 +01:00
parent fd415f0b45
commit 3b4199a669
2 changed files with 24 additions and 1 deletions
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2
core/crypto/rand_generic.odin
View File

@@ -1,6 +1,6 @@
package crypto
when ODIN_OS != .Linux && ODIN_OS != .OpenBSD {
when ODIN_OS != .Linux && ODIN_OS != .OpenBSD && ODIN_OS != .Windows {
_rand_bytes :: proc (dst: []byte) {
unimplemented("crypto: rand_bytes not supported on this OS")
}

23
core/crypto/rand_windows.odin Normal file
View File

@@ -0,0 +1,23 @@
package crypto
import win32 "core:sys/windows"
import "core:os"
import "core:fmt"
_rand_bytes :: proc(dst: []byte) {
ret := (os.Errno)(win32.BCryptGenRandom(nil, raw_data(dst), u32(len(dst)), win32.BCRYPT_USE_SYSTEM_PREFERRED_RNG))
if ret != os.ERROR_NONE {
switch ret {
case os.ERROR_INVALID_HANDLE:
// The handle to the first parameter is invalid.
// This should not happen here, since we explicitly pass nil to it
panic("crypto: BCryptGenRandom Invalid handle for hAlgorithm")
case os.ERROR_INVALID_PARAMETER:
// One of the parameters was invalid
panic("crypto: BCryptGenRandom Invalid parameter")
case:
// Unknown error
panic(fmt.tprintf("crypto: BCryptGenRandom failed: %d\n", ret))
}
}
}