diff --git a/Makefile b/Makefile
index 14e117d..5d82f1f 100644
--- a/Makefile
+++ b/Makefile
@@ -7,13 +7,21 @@ GOLANGCI_VERSION := v1.59.0
 all: build
 
 build:
-	@echo "Building..."
-	@go build $(PKG)
+	@if [ -z "$(TAGS)" ]; then \
+		echo "Building..."; \
+	else \
+		echo "Building with tags: $(TAGS)"; \
+	fi
+	@go build -tags "$(TAGS)" $(PKG)
 
 # Run tests
 test:
-	@echo "Running tests..."
-	@go test -v $(PKG)
+	@if [ -z "$(TAGS)" ]; then \
+		echo "Running tests..."; \
+	else \
+		echo "Running tests with tags: $(TAGS)"; \
+	fi
+	@go test -tags "$(TAGS)" -v $(PKG)
 
 # Install golangci-lint
 lint-install:
diff --git a/curves/bls12381/alias.go b/curves/bls12381/alias.go
index 6682f30..5096406 100644
--- a/curves/bls12381/alias.go
+++ b/curves/bls12381/alias.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import blst "github.com/supranational/blst/bindings/go"
diff --git a/curves/bls12381/helper_test.go b/curves/bls12381/helper_test.go
index 20cf48c..dd42f99 100644
--- a/curves/bls12381/helper_test.go
+++ b/curves/bls12381/helper_test.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 // Note: These functions are for tests to access private globals, such as pubkeyCache.
diff --git a/curves/bls12381/init.go b/curves/bls12381/init.go
index 3112fa0..5d0da87 100644
--- a/curves/bls12381/init.go
+++ b/curves/bls12381/init.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import (
diff --git a/curves/bls12381/pubkey.go b/curves/bls12381/pubkey.go
index 5f8590d..55d6abd 100644
--- a/curves/bls12381/pubkey.go
+++ b/curves/bls12381/pubkey.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import (
diff --git a/curves/bls12381/pubkey_test.go b/curves/bls12381/pubkey_test.go
index fd656ea..de18ba5 100644
--- a/curves/bls12381/pubkey_test.go
+++ b/curves/bls12381/pubkey_test.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst_test
 
 import (
diff --git a/curves/bls12381/secret_key.go b/curves/bls12381/secret_key.go
index deaf0a4..917f627 100644
--- a/curves/bls12381/secret_key.go
+++ b/curves/bls12381/secret_key.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import (
@@ -8,6 +6,8 @@ import (
 	"fmt"
 
 	blst "github.com/supranational/blst/bindings/go"
+
+	"github.com/cosmos/crypto/internal/rand"
 )
 
 // bls12SecretKey used in the BLS signature scheme.
diff --git a/curves/bls12381/secret_key_test.go b/curves/bls12381/secret_key_test.go
index bfea916..601c118 100644
--- a/curves/bls12381/secret_key_test.go
+++ b/curves/bls12381/secret_key_test.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst_test
 
 import (
diff --git a/curves/bls12381/signature.go b/curves/bls12381/signature.go
index a5a8655..5ec56b7 100644
--- a/curves/bls12381/signature.go
+++ b/curves/bls12381/signature.go
@@ -1,5 +1,3 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import (
diff --git a/curves/bls12381/signature_test.go b/curves/bls12381/signature_test.go
index 318adc9..1a2956c 100644
--- a/curves/bls12381/signature_test.go
+++ b/curves/bls12381/signature_test.go
@@ -1,10 +1,9 @@
-//go:build ((linux && amd64) || (linux && arm64) || (darwin && amd64) || (darwin && arm64) || (windows && amd64)) && bls12381
-
 package blst
 
 import (
 	"bytes"
 	"errors"
+	"reflect"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
@@ -51,32 +50,32 @@ func TestSignatureFromBytes(t *testing.T) {
 	}{
 		{
 			name: "Nil",
-			err:  errors.New("signature must be 96 bytes"),
+			err:  errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Empty",
 			input: []byte{},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Short",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Long",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Bad",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("could not unmarshal bytes into signature"),
+			err:   errors.New("could not create signature from byte slice: could not unmarshal bytes into signature"),
 		},
 		{
 			input: []byte{0xac, 0xb0, 0x12, 0x4c, 0x75, 0x74, 0xf2, 0x81, 0xa2, 0x93, 0xf4, 0x18, 0x5c, 0xad, 0x3c, 0xb2, 0x26, 0x81, 0xd5, 0x20, 0x91, 0x7c, 0xe4, 0x66, 0x65, 0x24, 0x3e, 0xac, 0xb0, 0x51, 0x00, 0x0d, 0x8b, 0xac, 0xf7, 0x5e, 0x14, 0x51, 0x87, 0x0c, 0xa6, 0xb3, 0xb9, 0xe6, 0xc9, 0xd4, 0x1a, 0x7b, 0x02, 0xea, 0xd2, 0x68, 0x5a, 0x84, 0x18, 0x8a, 0x4f, 0xaf, 0xd3, 0x82, 0x5d, 0xaf, 0x6a, 0x98, 0x96, 0x25, 0xd7, 0x19, 0xcc, 0xd2, 0xd8, 0x3a, 0x40, 0x10, 0x1f, 0x4a, 0x45, 0x3f, 0xca, 0x62, 0x87, 0x8c, 0x89, 0x0e, 0xca, 0x62, 0x23, 0x63, 0xf9, 0xdd, 0xb8, 0xf3, 0x67, 0xa9, 0x1e, 0x84},
 			name:  "Not in group",
-			err:   errors.New("signature not in group"),
+			err:   errors.New("could not create signature from byte slice: signature not in group"),
 		},
 		{
 			name:  "Good",
@@ -106,27 +105,27 @@ func TestSignatureFromBytesNoValidation(t *testing.T) {
 	}{
 		{
 			name: "Nil",
-			err:  errors.New("signature must be 96 bytes"),
+			err:  errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Empty",
 			input: []byte{},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Short",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Long",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("signature must be 96 bytes"),
+			err:   errors.New("could not create signature from byte slice: signature must be 96 bytes"),
 		},
 		{
 			name:  "Bad",
 			input: []byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
-			err:   errors.New("could not unmarshal bytes into signature"),
+			err:   errors.New("could not create signature from byte slice: could not unmarshal bytes into signature"),
 		},
 		{
 			name:  "Not in group",
@@ -161,10 +160,7 @@ func TestCopy(t *testing.T) {
 	signatureA := &Signature{s: new(blstSignature).Sign(key.p, []byte("foo"), dst)}
 	signatureB, ok := signatureA.Copy().(*Signature)
 	require.Equal(t, true, ok)
-
-	assert.NotEqual(t, signatureA, signatureB)
-	assert.NotEqual(t, signatureA.s, signatureB.s)
-	assert.Equal(t, signatureA, signatureB)
+	assert.True(t, reflect.DeepEqual(signatureA.s, signatureB.s), "Signatures are not deeply equal")
 
 	signatureA.s.Sign(key.p, []byte("bar"), dst)
 	assert.NotEqual(t, signatureA, signatureB)
diff --git a/internal/rand/rand.go b/internal/rand/rand.go
new file mode 100644
index 0000000..3fe4a94
--- /dev/null
+++ b/internal/rand/rand.go
@@ -0,0 +1,45 @@
+package rand
+
+import (
+	"crypto/rand"
+	"encoding/binary"
+	mrand "math/rand"
+	"sync"
+)
+
+type source struct{}
+
+var lock sync.RWMutex
+var _ mrand.Source64 = (*source)(nil) // #nosec G404 -- This ensures we meet the interface
+
+// Seed does nothing when crypto/rand is used as source.
+func (_ *source) Seed(_ int64) {}
+
+// Int63 returns uniformly-distributed random (as in CSPRNG) int64 value within [0, 1<<63) range.
+// Panics if random generator reader cannot return data.
+func (s *source) Int63() int64 {
+	return int64(s.Uint64() & ^uint64(1<<63))
+}
+
+// Uint64 returns uniformly-distributed random (as in CSPRNG) uint64 value within [0, 1<<64) range.
+// Panics if random generator reader cannot return data.
+func (_ *source) Uint64() (val uint64) {
+	lock.RLock()
+	defer lock.RUnlock()
+	if err := binary.Read(rand.Reader, binary.BigEndian, &val); err != nil {
+		panic(err)
+	}
+	return
+}
+
+// Rand is alias for underlying random generator.
+type Rand = mrand.Rand // #nosec G404
+
+// NewGenerator returns a new generator that uses random values from crypto/rand as a source
+// (cryptographically secure random number generator).
+// Panics if crypto/rand input cannot be read.
+// Use it for everything where crypto secure non-deterministic randomness is required. Performance
+// takes a hit, so use sparingly.
+func NewGenerator() *Rand {
+	return mrand.New(&source{}) // #nosec G404 -- excluded
+}