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// -*- Mode: Go; indent-tabs-mode: t -*-
/*
* Copyright (C) 2015 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package asserts_test
import (
"crypto"
_ "crypto/sha256"
"encoding/base64"
. "gopkg.in/check.v1"
"github.com/snapcore/snapd/asserts"
)
type encodeDigestSuite struct{}
var _ = Suite(&encodeDigestSuite{})
func (eds *encodeDigestSuite) TestEncodeDigestOK(c *C) {
h := crypto.SHA512.New()
h.Write([]byte("some stuff to hash"))
digest := h.Sum(nil)
encoded, err := asserts.EncodeDigest(crypto.SHA512, digest)
c.Assert(err, IsNil)
decoded, err := base64.RawURLEncoding.DecodeString(encoded)
c.Assert(err, IsNil)
c.Check(decoded, DeepEquals, digest)
// sha3-384
b, err := base64.RawURLEncoding.DecodeString(blobSHA3_384)
c.Assert(err, IsNil)
encoded, err = asserts.EncodeDigest(crypto.SHA3_384, b)
c.Assert(err, IsNil)
c.Check(encoded, Equals, blobSHA3_384)
}
func (eds *encodeDigestSuite) TestEncodeDigestErrors(c *C) {
_, err := asserts.EncodeDigest(crypto.SHA1, nil)
c.Check(err, ErrorMatches, "unsupported hash")
_, err = asserts.EncodeDigest(crypto.SHA512, []byte{1, 2})
c.Check(err, ErrorMatches, "hash digest by sha512 should be 64 bytes")
_, err = asserts.EncodeDigest(crypto.SHA3_384, []byte{1, 2})
c.Check(err, ErrorMatches, "hash digest by sha3-384 should be 48 bytes")
}
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