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/*-
* Copyright 2019 Square Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package main
import (
"github.com/go-jose/go-jose/jose-util/generator"
jose "github.com/go-jose/go-jose/v3"
)
func encrypt() {
pub, err := generator.LoadPublicKey(keyBytes())
app.FatalIfError(err, "unable to read public key")
alg := jose.KeyAlgorithm(*encryptAlgFlag)
enc := jose.ContentEncryption(*encryptEncFlag)
crypter, err := jose.NewEncrypter(enc, jose.Recipient{Algorithm: alg, Key: pub}, nil)
app.FatalIfError(err, "unable to instantiate encrypter")
obj, err := crypter.Encrypt(readInput(*inFile))
app.FatalIfError(err, "unable to encrypt")
var msg string
if *encryptFullFlag {
msg = obj.FullSerialize()
} else {
msg, err = obj.CompactSerialize()
app.FatalIfError(err, "unable to serialize message")
}
writeOutput(*outFile, []byte(msg))
}
func decrypt() {
priv, err := generator.LoadPrivateKey(keyBytes())
app.FatalIfError(err, "unable to read private key")
obj, err := jose.ParseEncrypted(string(readInput(*inFile)))
app.FatalIfError(err, "unable to parse message")
plaintext, err := obj.Decrypt(priv)
app.FatalIfError(err, "unable to decrypt message")
writeOutput(*outFile, plaintext)
}
func sign() {
signingKey, err := generator.LoadPrivateKey(keyBytes())
app.FatalIfError(err, "unable to read private key")
alg := jose.SignatureAlgorithm(*signAlgFlag)
signer, err := jose.NewSigner(jose.SigningKey{Algorithm: alg, Key: signingKey}, nil)
app.FatalIfError(err, "unable to make signer")
obj, err := signer.Sign(readInput(*inFile))
app.FatalIfError(err, "unable to sign")
var msg string
if *signFullFlag {
msg = obj.FullSerialize()
} else {
msg, err = obj.CompactSerialize()
app.FatalIfError(err, "unable to serialize message")
}
writeOutput(*outFile, []byte(msg))
}
func verify() {
verificationKey, err := generator.LoadPublicKey(keyBytes())
app.FatalIfError(err, "unable to read public key")
obj, err := jose.ParseSigned(string(readInput(*inFile)))
app.FatalIfError(err, "unable to parse message")
plaintext, err := obj.Verify(verificationKey)
app.FatalIfError(err, "invalid signature")
writeOutput(*outFile, plaintext)
}
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