podman

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// +build !libtrust_openssl
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package libtrust
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import (
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	"crypto"
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	"crypto/ecdsa"
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	"crypto/rand"
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	"fmt"
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	"io"
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	"math/big"
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)
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func (k *ecPrivateKey) sign(data io.Reader, hashID crypto.Hash) (r, s *big.Int, err error) {
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	hasher := k.signatureAlgorithm.HashID().New()
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	_, err = io.Copy(hasher, data)
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	if err != nil {
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		return nil, nil, fmt.Errorf("error reading data to sign: %s", err)
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	}
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	hash := hasher.Sum(nil)
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	return ecdsa.Sign(rand.Reader, k.PrivateKey, hash)
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}
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