1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// Copyright (c) 2020, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the LICENSE.md file
// distributed with the sources of this project regarding your rights to use or distribute this
// software.
/*
Package integrity implements functions to add, examine, and verify digital signatures in a SIF
image.
Sign
To add one or more digital signatures to a SIF, create a Signer, and supply a signing PGP entity:
s, err := integrity.NewSigner(f, OptSignWithEntity(e))
By default, the returned Signer will add one digital signature per group of objects in f. To
override this behavior, supply additional options. For example, to apply a signature to object
group 1 only:
s, err := integrity.NewSigner(f, OptSignWithEntity(e), OptSignGroup(1))
Finally, to apply the signature(s):
err := s.Sign()
Verify
To examine and/or verify digital signatures in a SIF, create a Verifier:
v, err := NewVerifier(f)
If you intend to perform cryptographic verification, you must provide a source of key material:
v, err := NewVerifier(f, OptVerifyWithKeyRing(kr))
By default, the returned Verifier will consider non-legacy signatures for all object groups. To
override this behavior, supply additional options. For example, to consider non-legacy signatures
on object group 1 only:
v, err := NewVerifier(f, OptVerifyWithKeyRing(kr), OptVerifyGroup(1))
Finally, to perform cryptographic verification:
err := v.Verify()
*/
package integrity
|
