// TestNewSessionFailures validates some of the failure modes for NewSession.
func TestNewSessionFailures(t *testing.T) {
r := util.PRNG()
b := &bytes.Buffer{}
util.SetPRNG(b)
if _, _, err := NewSession(peer); err == nil {
util.SetPRNG(r)
t.Fatal("auth: expected new session failure with PRNG failure")
}
tmp := make([]byte, sessionLength)
b.Write(tmp)
if _, _, err := NewSession(peer); err == nil {
util.SetPRNG(r)
t.Fatal("auth: expected new session failure with PRNG failure")
}
util.SetPRNG(r)
tmp = make([]byte, 16)
if _, _, err := NewSession(tmp); err == nil {
t.Fatal("auth: expected new session failure with invalid public key")
}
}
// TestTOTPPRNGFailure validates failures when the PRNG fails.
func TestTOTPPRNGFailure(t *testing.T) {
oldPRNG := util.PRNG()
util.SetPRNG(&bytes.Buffer{})
_, _, err := NewGoogleTOTP("")
if err == nil {
t.Fatal("auth: expect TOTP generation failure in the face of a PRNG failure")
}
util.SetPRNG(oldPRNG)
}
// GenerateKey creates a new set of encryption and signature keys
// using the operating system's random number generator.
func GenerateKey() (*PrivateKey, error) {
var priv PrivateKey
var err error
prng := util.PRNG()
priv.PublicKey = &PublicKey{}
priv.E, priv.D, err = box.GenerateKey(prng)
if err != nil {
return nil, err
}
priv.V, priv.S, err = ed25519.GenerateKey(prng)
if err != nil {
return nil, err
}
return &priv, nil
}
// encrypt the message without encoding it
func testEncryptBare(pub *PublicKey, message []byte) (out []byte, ok bool) {
if !pub.Valid() {
return nil, false
}
prng := util.PRNG()
epub, epriv, err := box.GenerateKey(prng)
if err != nil {
return nil, false
}
out = epub[:]
nonce := util.NewNonce()
out = append(out, nonce[:]...)
out = box.Seal(out, message, nonce, pub.E, epriv)
ok = true
return
}
// write the message two times to PT
func testEncryptTwo(pub *PublicKey, message []byte) (out []byte, ok bool) {
if !pub.Valid() {
return nil, false
}
prng := util.PRNG()
epub, epriv, err := box.GenerateKey(prng)
if err != nil {
return nil, false
}
enc := &tlv.Encoder{}
enc.Encode(message)
enc.Encode(message)
out = epub[:]
nonce := util.NewNonce()
out = append(out, nonce[:]...)
out = box.Seal(out, enc.Bytes(), nonce, pub.E, epriv)
ok = true
return
}