41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
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package encryption
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import (
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"encoding/base64"
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"fmt"
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"strings"
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"github.com/hashicorp/errwrap"
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"github.com/hashicorp/vault/helper/pgpkeys"
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)
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// RetrieveGPGKey returns the PGP key specified as the pgpKey parameter, or queries
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// the public key from the keybase service if the parameter is a keybase username
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// prefixed with the phrase "keybase:"
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func RetrieveGPGKey(pgpKey string) (string, error) {
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const keybasePrefix = "keybase:"
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encryptionKey := pgpKey
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if strings.HasPrefix(pgpKey, keybasePrefix) {
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publicKeys, err := pgpkeys.FetchKeybasePubkeys([]string{pgpKey})
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if err != nil {
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return "", errwrap.Wrapf(fmt.Sprintf("Error retrieving Public Key for %s: {{err}}", pgpKey), err)
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}
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encryptionKey = publicKeys[pgpKey]
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}
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return encryptionKey, nil
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}
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// EncryptValue encrypts the given value with the given encryption key. Description
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// should be set such that errors return a meaningful user-facing response.
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func EncryptValue(encryptionKey, value, description string) (string, string, error) {
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fingerprints, encryptedValue, err :=
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pgpkeys.EncryptShares([][]byte{[]byte(value)}, []string{encryptionKey})
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if err != nil {
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return "", "", errwrap.Wrapf(fmt.Sprintf("Error encrypting %s: {{err}}", description), err)
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}
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return fingerprints[0], base64.StdEncoding.EncodeToString(encryptedValue[0]), nil
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}
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