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
|
package p11
import "github.com/miekg/pkcs11"
// PublicKey is an Object representing a public key. Since any object can be cast to a
// PublicKey, it is the user's responsibility to ensure that the object is
// actually a public key. For instance, if you use a FindObjects template that
// includes CKA_CLASS: CKO_PUBLIC_KEY, you can be confident the resulting object
// is a public key.
type PublicKey Object
// PrivateKey is an Object representing a private key. Since any object can be cast to a
// PrivateKey, it is the user's responsibility to ensure that the object is
// actually a private key.
type PrivateKey Object
// Decrypt decrypts the input with a given mechanism.
func (priv PrivateKey) Decrypt(mechanism pkcs11.Mechanism, ciphertext []byte) ([]byte, error) {
s := priv.session
s.Lock()
defer s.Unlock()
err := s.ctx.DecryptInit(s.handle, []*pkcs11.Mechanism{&mechanism}, priv.objectHandle)
if err != nil {
return nil, err
}
out, err := s.ctx.Decrypt(s.handle, ciphertext)
if err != nil {
return nil, err
}
return out, nil
}
// Sign signs the input with a given mechanism.
func (priv PrivateKey) Sign(mechanism pkcs11.Mechanism, message []byte) ([]byte, error) {
s := priv.session
s.Lock()
defer s.Unlock()
err := s.ctx.SignInit(s.handle, []*pkcs11.Mechanism{&mechanism}, priv.objectHandle)
if err != nil {
return nil, err
}
out, err := s.ctx.Sign(s.handle, message)
if err != nil {
return nil, err
}
return out, nil
}
// Verify verifies a signature over a message with a given mechanism.
func (pub PublicKey) Verify(mechanism pkcs11.Mechanism, message, signature []byte) error {
s := pub.session
s.Lock()
defer s.Unlock()
err := s.ctx.VerifyInit(s.handle, []*pkcs11.Mechanism{&mechanism}, pub.objectHandle)
if err != nil {
return err
}
err = s.ctx.Verify(s.handle, message, signature)
if err != nil {
return err
}
return nil
}
// Encrypt encrypts a plaintext with a given mechanism.
func (pub PublicKey) Encrypt(mechanism pkcs11.Mechanism, plaintext []byte) ([]byte, error) {
s := pub.session
s.Lock()
defer s.Unlock()
err := s.ctx.EncryptInit(s.handle, []*pkcs11.Mechanism{&mechanism}, pub.objectHandle)
if err != nil {
return nil, err
}
out, err := s.ctx.Encrypt(s.handle, plaintext)
if err != nil {
return nil, err
}
return out, nil
}
|
