80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
package pgpcrypt
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import (
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"bytes"
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"io"
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"io/ioutil"
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"time"
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"golang.org/x/crypto/openpgp"
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)
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// Encrypt - pgp encrypt func
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func Encrypt(key openpgp.EntityList, src io.Reader, dst io.Writer) error {
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fileHint := &openpgp.FileHints{}
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fileHint.IsBinary = true
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fileHint.ModTime = time.Now()
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encWriter, err := openpgp.Encrypt(dst, key, nil, fileHint, nil)
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if err != nil {
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return err
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}
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_, err = io.Copy(encWriter, src)
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if err != nil {
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return err
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}
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return nil
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}
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// EncryptBytes -
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func EncryptBytes(key openpgp.EntityList, src io.Reader) ([]byte, error) {
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buf := new(bytes.Buffer)
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fileHint := &openpgp.FileHints{}
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fileHint.IsBinary = true
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encWriter, err := openpgp.Encrypt(buf, key, nil, fileHint, nil)
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if err != nil {
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return nil, err
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}
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_, err = io.Copy(encWriter, src)
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if err != nil {
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return nil, err
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}
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encBytes, err := ioutil.ReadAll(buf)
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if err != nil {
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return nil, err
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}
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return encBytes, nil
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}
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// Decrypt - pgp decrypt func
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func Decrypt(key *openpgp.Entity, keyPassword string, src io.Reader, dst io.Writer) error {
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// decode private key
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passphraseByte := []byte(keyPassword)
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key.PrivateKey.Decrypt(passphraseByte)
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for _, sub := range key.Subkeys {
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sub.PrivateKey.Decrypt(passphraseByte)
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}
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var keyList openpgp.EntityList
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keyList = append(keyList, key)
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md, err := openpgp.ReadMessage(src, keyList, nil, nil)
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if err != nil {
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return err
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}
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_, err = io.Copy(dst, md.UnverifiedBody)
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if err != nil {
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return err
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}
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return nil
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}
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