travis, build: implement uploading archives to azure

1 files changed, 58 insertions, 0 deletions

diff --git a/internal/build/pgp.go b/internal/build/pgp.go
new file mode 100644
index 000000000..cc60d64fb
--- /dev/null
+++ b/internal/build/pgp.go
@@ -0,0 +1,58 @@
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// signFile reads the contents of an input file and signs it (in armored format)
+// with the key provided, placing the signature into the output file.
+
+package build
+
+import (
+	"bytes"
+	"fmt"
+	"os"
+
+	"golang.org/x/crypto/openpgp"
+)
+
+// PGPSignFile parses a PGP private key from the specified string and creates a
+// signature file into the output parameter of the input file.
+//
+// Note, this method assumes a single key will be container in the pgpkey arg,
+// furthermore that it is in armored format.
+func PGPSignFile(input string, output string, pgpkey string) error {
+	// Parse the keyring and make sure we only have a single private key in it
+	keys, err := openpgp.ReadArmoredKeyRing(bytes.NewBufferString(pgpkey))
+	if err != nil {
+		return err
+	}
+	if len(keys) != 1 {
+		return fmt.Errorf("key count mismatch: have %d, want %d", len(keys), 1)
+	}
+	// Create the input and output streams for signing
+	in, err := os.Open(input)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+
+	out, err := os.Create(output)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+
+	// Generate the signature and return
+	return openpgp.ArmoredDetachSignText(out, keys[0], in, nil)
+}