81 lines
1.7 KiB
Go
81 lines
1.7 KiB
Go
// Provides key manipulation helper methods
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package key
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import (
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"bytes"
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"fmt"
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"github.com/ProtonMail/go-pm-crypto/armor"
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"golang.org/x/crypto/openpgp"
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"golang.org/x/crypto/openpgp/packet"
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"strings"
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)
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// Use: ios/android only
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//CheckPassphrase check is private key passphrase ok
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func CheckPassphrase(privateKey string, passphrase string) bool {
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privKeyReader := strings.NewReader(privateKey)
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entries, err := openpgp.ReadArmoredKeyRing(privKeyReader)
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if err != nil {
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fmt.Println(err)
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return false
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}
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var keys []*packet.PrivateKey
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for _, e := range entries {
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keys = append(keys, e.PrivateKey)
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}
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var decryptError error
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var n int
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for _, key := range keys {
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if !key.Encrypted {
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continue // Key already decrypted
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}
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if decryptError = key.Decrypt([]byte(passphrase)); decryptError == nil {
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n++
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}
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}
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if n == 0 {
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return false
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}
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return true
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}
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// Use: ios/android only
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// PublicKey get a public key from a private key
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func PublicKey(privateKey string) (string, error) {
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privKeyReader := strings.NewReader(privateKey)
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entries, err := openpgp.ReadArmoredKeyRing(privKeyReader)
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if err != nil {
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return "", err
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}
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var outBuf bytes.Buffer
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for _, e := range entries {
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e.Serialize(&outBuf)
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}
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outString, err := armor.ArmorWithType(outBuf.Bytes(), armor.PUBLIC_KEY_HEADER)
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if err != nil {
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return "", nil
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}
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return outString, nil
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}
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// Use: ios/android only
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// PublicKeyBinOut get a public key from a private key
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func PublicKeyBinOut(privateKey string) ([]byte, error) {
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privKeyReader := strings.NewReader(privateKey)
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entries, err := openpgp.ReadArmoredKeyRing(privKeyReader)
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if err != nil {
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return nil, err
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}
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var outBuf bytes.Buffer
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for _, e := range entries {
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e.Serialize(&outBuf)
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}
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return outBuf.Bytes(), nil
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}
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