/
jwk.go
57 lines (49 loc) · 1.41 KB
/
jwk.go
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package jwk
import (
"crypto"
"crypto/ecdsa"
"crypto/rsa"
"fmt"
e "github.com/MichaelFraser99/go-jose/error"
"github.com/MichaelFraser99/go-jose/internal/algorithms/common"
)
func PublicFromJwk(jwk map[string]any) (crypto.PublicKey, error) {
if kty, present := jwk["kty"]; present {
switch kty.(string) {
case "EC":
return common.ECDSAPublicKeyFromJwk(jwk)
case "RSA":
return common.RSAPublicKeyFromJwk(jwk)
default:
return nil, fmt.Errorf("unsupported kty: %s", kty.(string))
}
} else {
return nil, fmt.Errorf("no kty claim present in jwk, cannot infer type of public key to return")
}
}
func PublicJwk(publicKey crypto.PublicKey) (*map[string]any, error) {
ecdsaPK, ecdsaOk := publicKey.(*ecdsa.PublicKey)
rsaPK, rsaOk := publicKey.(*rsa.PublicKey)
if ecdsaOk {
m := common.JwkFromECDSAPublicKey(ecdsaPK)
return &m, nil
}
if rsaOk {
m := common.JwkFromRSAPublicKey(rsaPK)
return &m, nil
}
return nil, fmt.Errorf("%wunknown public key format provided", e.InvalidPublicKey)
}
func PrivateJwk(privateKey crypto.PrivateKey) (*map[string]any, error) {
ecdsaPK, ecdsaOk := privateKey.(*ecdsa.PrivateKey)
rsaPK, rsaOk := privateKey.(*rsa.PrivateKey)
if ecdsaOk {
m := common.JwkFromECDSAPrivateKey(ecdsaPK)
return &m, nil
}
if rsaOk {
m := common.JwkFromRSAPrivateKey(rsaPK)
return &m, nil
}
return nil, fmt.Errorf("%wunknown private key format provided", e.InvalidPrivateKey)
}