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package test
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"strings"
"testing"
"github.com/stretchr/testify/require"
)
// Methods to generate private keys. If generation starts slowing down test
// execution then switch over to pre-generated keys.
// NewEC256Key returns an ECDSA key over the P256 curve
func NewEC256Key(tb testing.TB) *ecdsa.PrivateKey {
key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
require.NoError(tb, err)
return key
}
// NewKeyID returns a random id useful for identifying keys
func NewKeyID(tb testing.TB) string {
choices := make([]byte, 32)
_, err := rand.Read(choices)
require.NoError(tb, err)
return keyIDFromBytes(choices)
}
func keyIDFromBytes(choices []byte) string {
const alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
var builder strings.Builder
for _, choice := range choices {
builder.WriteByte(alphabet[int(choice)%len(alphabet)])
}
return builder.String()
}
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