Source file src/crypto/rand/rand_wasip1.go

     1  // Copyright 2023 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package rand
     6  
     7  import "syscall"
     8  
     9  func read(b []byte) error {
    10  	// This uses the wasi_snapshot_preview1 random_get syscall defined in
    11  	// https://github.com/WebAssembly/WASI/blob/23a52736049f4327dd335434851d5dc40ab7cad1/legacy/preview1/docs.md#-random_getbuf-pointeru8-buf_len-size---result-errno.
    12  	// The definition does not explicitly guarantee that the entire buffer will
    13  	// be filled, but this appears to be the case in all runtimes tested.
    14  	return syscall.RandomGet(b)
    15  }
    16  

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