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package schema1
import (
"crypto/x509"
"encoding/json"
"github.com/docker/libtrust"
)
// Sign signs the manifest with the provided private key, returning a
// SignedManifest. This typically won't be used within the registry, except
// for testing.
func Sign(m *Manifest, pk libtrust.PrivateKey) (*SignedManifest, error) {
p, err := json.MarshalIndent(m, "", " ")
if err != nil {
return nil, err
}
js, err := libtrust.NewJSONSignature(p)
if err != nil {
return nil, err
}
if err := js.Sign(pk); err != nil {
return nil, err
}
pretty, err := js.PrettySignature("signatures")
if err != nil {
return nil, err
}
return &SignedManifest{
Manifest: *m,
all: pretty,
Canonical: p,
}, nil
}
// SignWithChain signs the manifest with the given private key and x509 chain.
// The public key of the first element in the chain must be the public key
// corresponding with the sign key.
func SignWithChain(m *Manifest, key libtrust.PrivateKey, chain []*x509.Certificate) (*SignedManifest, error) {
p, err := json.MarshalIndent(m, "", " ")
if err != nil {
return nil, err
}
js, err := libtrust.NewJSONSignature(p)
if err != nil {
return nil, err
}
if err := js.SignWithChain(key, chain); err != nil {
return nil, err
}
pretty, err := js.PrettySignature("signatures")
if err != nil {
return nil, err
}
return &SignedManifest{
Manifest: *m,
all: pretty,
Canonical: p,
}, nil
}
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