Add support for TM secp256k1 (#7838)

* Add secp256k1 support

* Fix test

* Add test in handler_test

* Use table tests

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

x/staking/handler_test.go

@@ -12,7 +12,9 @@ import (
 	tmtypes "github.com/tendermint/tendermint/types"
 
 	cryptocodec "github.com/cosmos/cosmos-sdk/crypto/codec"
+	"github.com/cosmos/cosmos-sdk/crypto/keys/ed25519"
 	"github.com/cosmos/cosmos-sdk/crypto/keys/secp256k1"
+	cryptotypes "github.com/cosmos/cosmos-sdk/crypto/types"
 	"github.com/cosmos/cosmos-sdk/simapp"
 	"github.com/cosmos/cosmos-sdk/testutil/testdata"
 	sdk "github.com/cosmos/cosmos-sdk/types"
@@ -181,6 +183,37 @@ func TestInvalidPubKeyTypeMsgCreateValidator(t *testing.T) {
 	tstaking.CreateValidator(addr, invalidPk, 10, false)
 }
 
+func TestBothPubKeyTypesMsgCreateValidator(t *testing.T) {
+	app, ctx, _, valAddrs := bootstrapHandlerGenesisTest(t, 1000, 2, 1000)
+	ctx = ctx.WithConsensusParams(&abci.ConsensusParams{
+		Validator: &tmproto.ValidatorParams{PubKeyTypes: []string{tmtypes.ABCIPubKeyTypeEd25519, tmtypes.ABCIPubKeyTypeSecp256k1}},
+	})
+
+	tstaking := teststaking.NewHelper(t, ctx, app.StakingKeeper)
+
+	testCases := []struct {
+		name string
+		addr sdk.ValAddress
+		pk   cryptotypes.PubKey
+	}{
+		{
+			"can create a validator with ed25519 pubkey",
+			valAddrs[0],
+			ed25519.GenPrivKey().PubKey(),
+		},
+		{
+			"can create a validator with secp256k1 pubkey",
+			valAddrs[1],
+			secp256k1.GenPrivKey().PubKey(),
+		},
+	}
+	for _, tc := range testCases {
+		t.Run(tc.name, func(*testing.T) {
+			tstaking.CreateValidator(tc.addr, tc.pk, 10, true)
+		})
+	}
+}
+
 func TestLegacyValidatorDelegations(t *testing.T) {
 	app, ctx, delAddrs, valAddrs := bootstrapHandlerGenesisTest(t, 1000, 2, 100000000)