debian-forge-composer/vendor/github.com/containers/libtrust/hash.go
Christian Kellner 986f076276 container: add support for uploading to registries
Add a new generic container registry client via a new `container`
package. Use this to create a command line utility as well as a
new upload target for container registries.

The code uses the github.com/containers/* project and packages to
interact with container registires that is also used by skopeo,
podman et al. One if the dependencies is `proglottis/gpgme` that
is using cgo to bind libgpgme, so we have to add the corresponding
devel package to the BuildRequires as well as installing it on CI.

Checks will follow later via an integration test.
2022-06-29 10:02:46 +02:00

56 lines
1.3 KiB
Go

package libtrust
import (
"crypto"
_ "crypto/sha256" // Registrer SHA224 and SHA256
_ "crypto/sha512" // Registrer SHA384 and SHA512
"fmt"
)
type signatureAlgorithm struct {
algHeaderParam string
hashID crypto.Hash
}
func (h *signatureAlgorithm) HeaderParam() string {
return h.algHeaderParam
}
func (h *signatureAlgorithm) HashID() crypto.Hash {
return h.hashID
}
var (
rs256 = &signatureAlgorithm{"RS256", crypto.SHA256}
rs384 = &signatureAlgorithm{"RS384", crypto.SHA384}
rs512 = &signatureAlgorithm{"RS512", crypto.SHA512}
es256 = &signatureAlgorithm{"ES256", crypto.SHA256}
es384 = &signatureAlgorithm{"ES384", crypto.SHA384}
es512 = &signatureAlgorithm{"ES512", crypto.SHA512}
)
func rsaSignatureAlgorithmByName(alg string) (*signatureAlgorithm, error) {
switch {
case alg == "RS256":
return rs256, nil
case alg == "RS384":
return rs384, nil
case alg == "RS512":
return rs512, nil
default:
return nil, fmt.Errorf("RSA Digital Signature Algorithm %q not supported", alg)
}
}
func rsaPKCS1v15SignatureAlgorithmForHashID(hashID crypto.Hash) *signatureAlgorithm {
switch {
case hashID == crypto.SHA512:
return rs512
case hashID == crypto.SHA384:
return rs384
case hashID == crypto.SHA256:
fallthrough
default:
return rs256
}
}