var crypto/rand.Reader

7 uses

	crypto/rand (current package)
		rand.go#L34: var Reader io.Reader = rand.Reader
		rand.go#L52: 	if rand.IsDefaultReader(Reader) {
		rand.go#L60: 		_, err = io.ReadFull(Reader, bb)

	crypto/ed25519
		ed25519.go#L154: 			random = cryptorand.Reader

	crypto/tls
		common.go#L1170: 		return rand.Reader

	go.pact.im/x/crypt
		builtin.go#L13: 	defaultArgon2        = crypterArgon2{rand.Reader}

	mime/multipart
		writer.go#L87: 	_, err := io.ReadFull(rand.Reader, buf[:])