feat(crypto/keyring): expose db keyring used in the keystore (#20212)

Co-authored-by: Julien Robert <julien@rbrt.fr>

CHANGELOG.md

@@ -59,6 +59,7 @@ Every module contains its own CHANGELOG.md. Please refer to the module you are i
 * (x/consensus) [#19483](https://github.com/cosmos/cosmos-sdk/pull/19483) Add consensus messages registration to consensus module.
 * (types) [#19759](https://github.com/cosmos/cosmos-sdk/pull/19759) Align SignerExtractionAdapter in PriorityNonceMempool Remove.
 * (client) [#19870](https://github.com/cosmos/cosmos-sdk/pull/19870) Add new query command `wait-tx`. Alias `event-query-tx-for` to `wait-tx` for backward compatibility.
+* (crypto/keyring) [#20212](https://github.com/cosmos/cosmos-sdk/pull/20212) Expose the db keyring used in the keystore.
 * (genutil) [#19971](https://github.com/cosmos/cosmos-sdk/pull/19971) Allow manually setting the consensus key type in genesis
 
 ### Improvements

crypto/keyring/keyring.go

@@ -58,6 +58,10 @@ var (
 type Keyring interface {
 	// Backend get the backend type used in the keyring config: "file", "os", "kwallet", "pass", "test", "memory".
 	Backend() string
+
+	// Get the db keyring used in the keystore.
+	DB() keyring.Keyring
+
 	// List all keys.
 	List() ([]*Record, error)
 
@@ -256,6 +260,11 @@ func (ks keystore) Backend() string {
 	return ks.backend
 }
 
+// DB returns the db keyring used in the keystore
+func (ks keystore) DB() keyring.Keyring {
+	return ks.db
+}
+
 func (ks keystore) ExportPubKeyArmor(uid string) (string, error) {
 	k, err := ks.Key(uid)
 	if err != nil {