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//go:build tpmsimulator
// +build tpmsimulator
package rand
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rsa"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"go.step.sm/crypto/tpm"
"go.step.sm/crypto/tpm/simulator"
)
func withSimulator(t *testing.T) tpm.NewTPMOption {
t.Helper()
var sim simulator.Simulator
t.Cleanup(func() {
if sim == nil {
return
}
err := sim.Close()
require.NoError(t, err)
})
sim, err := simulator.New()
require.NoError(t, err)
err = sim.Open()
require.NoError(t, err)
return tpm.WithSimulator(sim)
}
func TestNew(t *testing.T) {
r, err := New(withSimulator(t))
require.NoError(t, err)
require.NotNil(t, r)
ecdsaKey, err := ecdsa.GenerateKey(elliptic.P256(), r)
require.NoError(t, err)
if assert.NotNil(t, ecdsaKey) {
size := (ecdsaKey.D.BitLen() + 7) / 8
require.Equal(t, 32, size)
}
rsaKey, err := rsa.GenerateKey(r, 2048)
require.NoError(t, err)
if assert.NotNil(t, rsaKey) {
require.Equal(t, 256, rsaKey.Size()) // 2048 bits; 256 bytes expected to have been read
}
}
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