40 lines
976 B
Go
40 lines
976 B
Go
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package pgp
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import (
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"bytes"
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_ "crypto/sha256"
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"errors"
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"fmt"
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"io/ioutil"
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"golang.org/x/crypto/openpgp"
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"golang.org/x/crypto/openpgp/armor"
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_ "golang.org/x/crypto/ripemd160"
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)
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func Decrypt(entity *openpgp.Entity, encrypted []byte) ([]byte, error) {
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// Decode message
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block, err := armor.Decode(bytes.NewReader(encrypted))
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if err != nil {
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return []byte{}, fmt.Errorf("error decoding: %v", err)
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}
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if block.Type != "PGP MESSAGE" {
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return []byte{}, errors.New("invalid message type")
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}
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// Decrypt message
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entityList := openpgp.EntityList{entity}
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messageReader, err := openpgp.ReadMessage(block.Body, entityList, nil, nil)
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if err != nil {
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return []byte{}, fmt.Errorf("error reading message: %v", err)
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}
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var read []byte
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read, err = ioutil.ReadAll(messageReader.UnverifiedBody)
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if err != nil {
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return []byte{}, fmt.Errorf("error reading unverified body: %v", err)
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}
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// Return output - an unencrypted, and uncompressed message
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return read, nil
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}
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