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31 lines
739 B
Go
31 lines
739 B
Go
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package letsencrypt
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import (
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"crypto/rsa"
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"crypto/x509"
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"encoding/pem"
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"io/ioutil"
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"os"
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)
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// loadRSAPrivateKey loads a PEM-encoded RSA private key from file.
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func loadRSAPrivateKey(file string) (*rsa.PrivateKey, error) {
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keyBytes, err := ioutil.ReadFile(file)
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if err != nil {
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return nil, err
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}
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keyBlock, _ := pem.Decode(keyBytes)
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return x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
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}
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// saveRSAPrivateKey saves a PEM-encoded RSA private key to file.
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func saveRSAPrivateKey(key *rsa.PrivateKey, file string) error {
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pemKey := pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(key)}
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keyOut, err := os.Create(file)
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if err != nil {
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return err
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}
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defer keyOut.Close()
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return pem.Encode(keyOut, &pemKey)
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}
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