5aabe4a5f8
* add wrapping key endpoint * change how wrapping key is stored * move wrapping key func to backend * refactor wrapping key generation * Initial unit tests for Transit wrapping key endpoint * Wire up wrapping key unit tests to actual implementation. * Clean up Transit BYOK wrapping key tests and imports. * Fix Transit wrapping key endpoint formatting. * Update transit wrapping key to use lock manager for safe concurrent use. * Rename some Transit wrapping key variables. Ensure the Transit wrapping key is correctly typed and formatted in a unit test. * Fix spacing issue in Transit wrapping key endpoint help string. Co-authored-by: rculpepper <rculpepper@hashicorp.com>
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
package transit
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import (
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"context"
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"crypto/x509"
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"encoding/pem"
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"fmt"
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"strconv"
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"github.com/hashicorp/vault/sdk/framework"
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"github.com/hashicorp/vault/sdk/helper/keysutil"
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"github.com/hashicorp/vault/sdk/logical"
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)
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const WrappingKeyName = "wrapping-key"
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func (b *backend) pathWrappingKey() *framework.Path {
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return &framework.Path{
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Pattern: "wrapping_key",
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Callbacks: map[logical.Operation]framework.OperationFunc{
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logical.ReadOperation: b.pathWrappingKeyRead,
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},
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HelpSynopsis: pathWrappingKeyHelpSyn,
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HelpDescription: pathWrappingKeyHelpDesc,
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}
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}
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func (b *backend) pathWrappingKeyRead(ctx context.Context, req *logical.Request, _ *framework.FieldData) (*logical.Response, error) {
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polReq := keysutil.PolicyRequest{
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Upsert: true,
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Storage: req.Storage,
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Name: fmt.Sprintf("import/%s", WrappingKeyName),
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KeyType: keysutil.KeyType_RSA4096,
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Derived: false,
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Convergent: false,
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Exportable: false,
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AllowPlaintextBackup: false,
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AutoRotatePeriod: 0,
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}
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p, _, err := b.GetPolicy(ctx, polReq, b.GetRandomReader())
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if err != nil {
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return nil, err
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}
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if p == nil {
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return nil, fmt.Errorf("error retrieving wrapping key: returned policy was nil")
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}
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if b.System().CachingDisabled() {
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p.Unlock()
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}
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wrappingKey := p.Keys[strconv.Itoa(p.LatestVersion)]
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derBytes, err := x509.MarshalPKIXPublicKey(wrappingKey.RSAKey.Public())
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if err != nil {
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return nil, fmt.Errorf("error marshaling RSA public key: %w", err)
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}
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pemBlock := &pem.Block{
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Type: "PUBLIC KEY",
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Bytes: derBytes,
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}
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pemBytes := pem.EncodeToMemory(pemBlock)
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if pemBytes == nil || len(pemBytes) == 0 {
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return nil, fmt.Errorf("failed to PEM-encode RSA public key")
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}
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publicKeyString := string(pemBytes)
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resp := &logical.Response{
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Data: map[string]interface{}{
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"public_key": publicKeyString,
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},
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}
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return resp, nil
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}
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const (
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pathWrappingKeyHelpSyn = "Returns the public key to use for wrapping imported keys"
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pathWrappingKeyHelpDesc = "This path is used to retrieve the RSA-4096 wrapping key " +
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"for wrapping keys that are being imported into transit."
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)
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