fix typos

crypto/encode_test.go

@@ -84,7 +84,7 @@ func TestKeyEncodings(t *testing.T) {
 		var sig1, sig2, sig3 Signature
 		sig1, err := tc.privKey.Sign([]byte("something"))
 		assert.NoError(t, err)
-		checkAminoBinary(t, sig1, &sig2, -1) // Siganture size changes for Secp anyways.
+		checkAminoBinary(t, sig1, &sig2, -1) // Signature size changes for Secp anyways.
 		assert.EqualValues(t, sig1, sig2)
 		checkAminoJSON(t, sig1, &sig3, false) // TODO also check Prefix bytes.
 		assert.EqualValues(t, sig1, sig3)

crypto/hkdfchacha20poly1305/hkdfchachapoly_test.go

@@ -11,7 +11,7 @@ import (
 )
 
 // Test that a test vector we generated is valid. (Ensures backwards
-// compatability)
+// compatibility)
 func TestVector(t *testing.T) {
 	key, _ := hex.DecodeString("56f8de45d3c294c7675bcaf457bdd4b71c380b9b2408ce9412b348d0f08b69ee")
 	aead, err := New(key[:])