fix(bls12381): go build flags were not configured correctly. (#20752)

Co-authored-by: ocnc2 <169075746+ocnc2@users.noreply.github.com>

crypto/keys/bls12_381/const.go

@@ -1,8 +1,10 @@
 package bls12_381
 
 const (
+	// PrivKeyName is the name of the private key as it is stored in the keystore.
 	PrivKeyName = "cometbft/PrivKeyBls12_381"
-	PubKeyName  = "cometbft/PubKeyBls12_381"
+	// PubKeyName is the name of the public key as it is stored in the keystore.
+	PubKeyName = "cometbft/PubKeyBls12_381"
 	// PubKeySize is the size, in bytes, of public keys as used in this package.
 	PubKeySize = 32
 	// PrivKeySize is the size, in bytes, of private keys as used in this package.
@@ -12,9 +14,8 @@ const (
 	// SeedSize is the size, in bytes, of private key seeds. These are the
 	// private key representations used by RFC 8032.
 	SeedSize = 32
-
 	// MaxMsgLen defines the maximum length of the message bytes as passed to Sign.
 	MaxMsgLen = 32
-
+	// KeyType is the type of key this package provides.
 	KeyType = "bls12381"
 )

crypto/keys/bls12_381/key.go

@@ -1,3 +1,5 @@
+//go:build !bls12381
+
 package bls12_381
 
 import (

crypto/keys/bls12_381/key_cgo.go

@@ -36,13 +36,17 @@ func NewPrivateKeyFromBytes(bz []byte) (PrivKey, error) {
 	if err != nil {
 		return PrivKey{}, err
 	}
-	return secretKey.Marshal(), nil
+	return PrivKey{
+		Key: secretKey.Marshal(),
+	}, nil
 }
 
 // GenPrivKey generates a new key.
 func GenPrivKey() (PrivKey, error) {
 	secretKey, err := bls12381.RandKey()
-	return PrivKey(secretKey.Marshal()), err
+	return PrivKey{
+		Key: secretKey.Marshal(),
+	}, err
 }
 
 // Bytes returns the byte representation of the Key.
@@ -58,7 +62,9 @@ func (privKey PrivKey) PubKey() cryptotypes.PubKey {
 		return nil
 	}
 
-	return PubKey(secretKey.PublicKey().Marshal())
+	return &PubKey{
+		Key: secretKey.PublicKey().Marshal(),
+	}
 }
 
 // Equals returns true if two keys are equal and false otherwise.
@@ -68,7 +74,7 @@ func (privKey PrivKey) Equals(other cryptotypes.LedgerPrivKey) bool {
 
 // Type returns the type.
 func (PrivKey) Type() string {
-	return keyType
+	return KeyType
 }
 
 // Sign signs the given byte array. If msg is larger than
@@ -167,7 +173,7 @@ func (pubKey PubKey) Bytes() []byte {
 
 // Type returns the key's type.
 func (PubKey) Type() string {
-	return keyType
+	return KeyType
 }
 
 // Equals returns true if the other's type is the same and their bytes are deeply equal.