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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
//
// Copyright 2021 The Sigstore Authors.
//
// 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 app
import (
"errors"
"fmt"
"strings"
validator "github.com/asaskevich/govalidator"
)
// validateSHA512Value ensures that the supplied string matches the
// following format: [sha512:]<128 hexadecimal characters>
// where [sha512:] is optional
func validateSHA512Value(v string) error {
var prefix, hash string
split := strings.SplitN(v, ":", 2)
switch len(split) {
case 1:
hash = split[0]
case 2:
prefix = split[0]
hash = split[1]
}
if strings.TrimSpace(prefix) != "" && prefix != "sha512" {
return fmt.Errorf("invalid prefix '%v'", prefix)
}
if !validator.IsSHA512(strings.ToLower(hash)) {
return errors.New("invalid SHA512 value")
}
return nil
}
// validateSHA256Value ensures that the supplied string matches the following format:
// [sha256:]<64 hexadecimal characters>
// where [sha256:] is optional
func validateSHA256Value(v string) error {
var prefix, hash string
split := strings.SplitN(v, ":", 2)
switch len(split) {
case 1:
hash = split[0]
case 2:
prefix = split[0]
hash = split[1]
}
if strings.TrimSpace(prefix) != "" && prefix != "sha256" {
return fmt.Errorf("invalid prefix '%v'", prefix)
}
if !validator.IsSHA256(strings.ToLower(hash)) {
return errors.New("invalid SHA256 value")
}
return nil
}
func validateSHA1Value(v string) error {
var prefix, hash string
split := strings.SplitN(v, ":", 2)
switch len(split) {
case 1:
hash = split[0]
case 2:
prefix = split[0]
hash = split[1]
}
if strings.TrimSpace(prefix) != "" && prefix != "sha1" {
return fmt.Errorf("invalid prefix '%v'", prefix)
}
if !validator.IsSHA1(strings.ToLower(hash)) {
return errors.New("invalid SHA1 value")
}
return nil
}
|
