OSS side changes for PKI HSM type handling fix (#14364)

builtin/logical/pki/ca_util.go

 package pki
 
 import (
+	"context"
+	"crypto/ecdsa"
+	"crypto/rsa"
 	"time"
 
+	"golang.org/x/crypto/ed25519"
+
 	"github.com/hashicorp/vault/sdk/framework"
 	"github.com/hashicorp/vault/sdk/helper/certutil"
 	"github.com/hashicorp/vault/sdk/logical"
 )
 
-func (b *backend) getGenerationParams(
-	data *framework.FieldData,
+func (b *backend) getGenerationParams(ctx context.Context,
+	data *framework.FieldData, mountPoint string,
 ) (exported bool, format string, role *roleEntry, errorResp *logical.Response) {
 	exportedStr := data.Get("exported").(string)
 	switch exportedStr {
@@ -30,6 +35,8 @@ func (b *backend) getGenerationParams(
 		return
 	}
 
+	keyType := data.Get("key_type").(string)
+	keyBits := data.Get("key_bits").(int)
 	if exportedStr == "kms" {
 		_, okKeyType := data.Raw["key_type"]
 		_, okKeyBits := data.Raw["key_bits"]
@@ -39,12 +46,35 @@ func (b *backend) getGenerationParams(
 				`invalid parameter for the kms path parameter, key_type nor key_bits arguments can be set in this mode`)
 			return
 		}
+
+		keyId, err := getManagedKeyId(data)
+		if err != nil {
+			errorResp = logical.ErrorResponse("unable to determine managed key id")
+			return
+		}
+		// Determine key type and key bits from the managed public key
+		withManagedPKIKey(ctx, b, keyId, mountPoint, func(ctx context.Context, key logical.ManagedSigningKey) error {
+			pubKey, err := key.GetPublicKey(ctx)
+			if err != nil {
+				return err
+			}
+			switch pubKey.(type) {
+			case *rsa.PublicKey:
+				keyType = "rsa"
+				keyBits = pubKey.(*rsa.PublicKey).Size() * 8
+			case *ecdsa.PublicKey:
+				keyType = "ec"
+			case *ed25519.PublicKey:
+				keyType = "ed25519"
+			}
+			return nil
+		})
 	}
 
 	role = &roleEntry{
 		TTL:                       time.Duration(data.Get("ttl").(int)) * time.Second,
-		KeyType:                   data.Get("key_type").(string),
-		KeyBits:                   data.Get("key_bits").(int),
+		KeyType:                   keyType,
+		KeyBits:                   keyBits,
 		SignatureBits:             data.Get("signature_bits").(int),
 		AllowLocalhost:            true,
 		AllowAnyName:              true,

builtin/logical/pki/managed_key_util.go

@@ -31,3 +31,7 @@ func generateCSRBundle(_ context.Context, _ *backend, input *inputBundle, data *
 func parseCABundle(_ context.Context, _ *backend, _ *logical.Request, bundle *certutil.CertBundle) (*certutil.ParsedCertBundle, error) {
 	return bundle.ToParsedCertBundle()
 }
+
+func withManagedPKIKey(_ context.Context, _ *backend, _ keyId, _ string, _ logical.ManagedSigningKeyConsumer) error {
+	return errEntOnly
+}

builtin/logical/pki/path_intermediate.go

@@ -72,7 +72,7 @@ endpoint.`,
 func (b *backend) pathGenerateIntermediate(ctx context.Context, req *logical.Request, data *framework.FieldData) (*logical.Response, error) {
 	var err error
 
-	exported, format, role, errorResp := b.getGenerationParams(data)
+	exported, format, role, errorResp := b.getGenerationParams(ctx, data, req.MountPoint)
 	if errorResp != nil {
 		return errorResp, nil
 	}

builtin/logical/pki/path_root.go

@@ -155,7 +155,7 @@ func (b *backend) pathCAGenerateRoot(ctx context.Context, req *logical.Request,
 		return resp, nil
 	}
 
-	exported, format, role, errorResp := b.getGenerationParams(data)
+	exported, format, role, errorResp := b.getGenerationParams(ctx, data, req.MountPoint)
 	if errorResp != nil {
 		return errorResp, nil
 	}

builtin/logical/pki/util.go

@@ -4,6 +4,8 @@ import (
 	"fmt"
 	"strings"
 
+	"github.com/hashicorp/vault/sdk/framework"
+
 	"github.com/hashicorp/vault/sdk/helper/errutil"
 )
 
@@ -28,9 +30,42 @@ func kmsRequested(input *inputBundle) bool {
 	return exportedStr.(string) == "kms"
 }
 
-func getManagedKeyNameOrUUID(input *inputBundle) (name string, UUID string, err error) {
+type keyId interface {
+	String() string
+}
+
+type (
+	UUIDKey string
+	NameKey string
+)
+
+func (u UUIDKey) String() string {
+	return string(u)
+}
+
+func (n NameKey) String() string {
+	return string(n)
+}
+
+// getManagedKeyId returns a NameKey or a UUIDKey, whichever was specified in the
+// request API data.
+func getManagedKeyId(data *framework.FieldData) (keyId, error) {
+	name, UUID, err := getManagedKeyNameOrUUID(data)
+	if err != nil {
+		return nil, err
+	}
+
+	var keyId keyId = NameKey(name)
+	if len(UUID) > 0 {
+		keyId = UUIDKey(UUID)
+	}
+
+	return keyId, nil
+}
+
+func getManagedKeyNameOrUUID(data *framework.FieldData) (name string, UUID string, err error) {
 	getApiData := func(argName string) (string, error) {
-		arg, ok := input.apiData.GetOk(argName)
+		arg, ok := data.GetOk(argName)
 		if !ok {
 			return "", nil
 		}