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algorithm_test.go
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algorithm_test.go
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package cose
import (
"crypto"
"crypto/sha256"
"hash"
"io"
"reflect"
"testing"
)
func TestAlgorithm_String(t *testing.T) {
// run tests
tests := []struct {
name string
alg Algorithm
want string
}{
{
name: "PS256",
alg: AlgorithmPS256,
want: "PS256",
},
{
name: "PS384",
alg: AlgorithmPS384,
want: "PS384",
},
{
name: "PS512",
alg: AlgorithmPS512,
want: "PS512",
},
{
name: "ES256",
alg: AlgorithmES256,
want: "ES256",
},
{
name: "ES384",
alg: AlgorithmES384,
want: "ES384",
},
{
name: "ES512",
alg: AlgorithmES512,
want: "ES512",
},
{
name: "Ed25519",
alg: AlgorithmEd25519,
want: "EdDSA",
},
{
name: "unknown algorithm",
alg: 0,
want: "unknown algorithm value 0",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.alg.String(); got != tt.want {
t.Errorf("Algorithm.String() = %v, want %v", got, tt.want)
}
})
}
}
func TestAlgorithm_computeHash(t *testing.T) {
// run tests
data := []byte("hello world")
tests := []struct {
name string
alg Algorithm
want []byte
wantErr error
}{
{
name: "PS256",
alg: AlgorithmPS256,
want: []byte{
0xb9, 0x4d, 0x27, 0xb9, 0x93, 0x4d, 0x3e, 0x08, 0xa5, 0x2e, 0x52, 0xd7, 0xda, 0x7d, 0xab, 0xfa,
0xc4, 0x84, 0xef, 0xe3, 0x7a, 0x53, 0x80, 0xee, 0x90, 0x88, 0xf7, 0xac, 0xe2, 0xef, 0xcd, 0xe9,
},
},
{
name: "PS384",
alg: AlgorithmPS384,
want: []byte{
0xfd, 0xbd, 0x8e, 0x75, 0xa6, 0x7f, 0x29, 0xf7, 0x01, 0xa4, 0xe0, 0x40, 0x38, 0x5e, 0x2e, 0x23,
0x98, 0x63, 0x03, 0xea, 0x10, 0x23, 0x92, 0x11, 0xaf, 0x90, 0x7f, 0xcb, 0xb8, 0x35, 0x78, 0xb3,
0xe4, 0x17, 0xcb, 0x71, 0xce, 0x64, 0x6e, 0xfd, 0x08, 0x19, 0xdd, 0x8c, 0x08, 0x8d, 0xe1, 0xbd,
},
},
{
name: "PS512",
alg: AlgorithmPS512,
want: []byte{
0x30, 0x9e, 0xcc, 0x48, 0x9c, 0x12, 0xd6, 0xeb, 0x4c, 0xc4, 0x0f, 0x50, 0xc9, 0x02, 0xf2, 0xb4,
0xd0, 0xed, 0x77, 0xee, 0x51, 0x1a, 0x7c, 0x7a, 0x9b, 0xcd, 0x3c, 0xa8, 0x6d, 0x4c, 0xd8, 0x6f,
0x98, 0x9d, 0xd3, 0x5b, 0xc5, 0xff, 0x49, 0x96, 0x70, 0xda, 0x34, 0x25, 0x5b, 0x45, 0xb0, 0xcf,
0xd8, 0x30, 0xe8, 0x1f, 0x60, 0x5d, 0xcf, 0x7d, 0xc5, 0x54, 0x2e, 0x93, 0xae, 0x9c, 0xd7, 0x6f,
},
},
{
name: "ES256",
alg: AlgorithmES256,
want: []byte{
0xb9, 0x4d, 0x27, 0xb9, 0x93, 0x4d, 0x3e, 0x08, 0xa5, 0x2e, 0x52, 0xd7, 0xda, 0x7d, 0xab, 0xfa,
0xc4, 0x84, 0xef, 0xe3, 0x7a, 0x53, 0x80, 0xee, 0x90, 0x88, 0xf7, 0xac, 0xe2, 0xef, 0xcd, 0xe9,
},
},
{
name: "ES384",
alg: AlgorithmES384,
want: []byte{
0xfd, 0xbd, 0x8e, 0x75, 0xa6, 0x7f, 0x29, 0xf7, 0x01, 0xa4, 0xe0, 0x40, 0x38, 0x5e, 0x2e, 0x23,
0x98, 0x63, 0x03, 0xea, 0x10, 0x23, 0x92, 0x11, 0xaf, 0x90, 0x7f, 0xcb, 0xb8, 0x35, 0x78, 0xb3,
0xe4, 0x17, 0xcb, 0x71, 0xce, 0x64, 0x6e, 0xfd, 0x08, 0x19, 0xdd, 0x8c, 0x08, 0x8d, 0xe1, 0xbd,
},
},
{
name: "ES512",
alg: AlgorithmES512,
want: []byte{
0x30, 0x9e, 0xcc, 0x48, 0x9c, 0x12, 0xd6, 0xeb, 0x4c, 0xc4, 0x0f, 0x50, 0xc9, 0x02, 0xf2, 0xb4,
0xd0, 0xed, 0x77, 0xee, 0x51, 0x1a, 0x7c, 0x7a, 0x9b, 0xcd, 0x3c, 0xa8, 0x6d, 0x4c, 0xd8, 0x6f,
0x98, 0x9d, 0xd3, 0x5b, 0xc5, 0xff, 0x49, 0x96, 0x70, 0xda, 0x34, 0x25, 0x5b, 0x45, 0xb0, 0xcf,
0xd8, 0x30, 0xe8, 0x1f, 0x60, 0x5d, 0xcf, 0x7d, 0xc5, 0x54, 0x2e, 0x93, 0xae, 0x9c, 0xd7, 0x6f,
},
},
{
name: "Ed25519",
alg: AlgorithmEd25519,
wantErr: ErrUnavailableHashFunc,
},
{
name: "unknown algorithm",
alg: 0,
wantErr: ErrUnavailableHashFunc,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := tt.alg.computeHash(data)
if err != tt.wantErr {
t.Errorf("Algorithm.computeHash() error = %v, wantErr %v", err, tt.wantErr)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("Algorithm.computeHash() = %v, want %v", got, tt.want)
}
})
}
}
type badHash struct{}
func badHashNew() hash.Hash {
return &badHash{}
}
func (*badHash) Write(p []byte) (n int, err error) {
return 0, io.EOF
}
func (*badHash) Sum(b []byte) []byte {
return b
}
func (*badHash) Reset() {}
func (*badHash) Size() int {
return 0
}
func (*badHash) BlockSize() int {
return 0
}
func Test_computeHash(t *testing.T) {
crypto.RegisterHash(crypto.SHA256, badHashNew)
defer crypto.RegisterHash(crypto.SHA256, sha256.New)
_, err := computeHash(crypto.SHA256, nil)
if err != io.EOF {
t.Fatalf("computeHash() error = %v, wantErr %v", err, io.EOF)
}
}