Change error message casing

ecdsa_utils.go

@@ -8,8 +8,8 @@ import (
 )
 
 var (
-	ErrNotECPublicKey  = errors.New("Key is not a valid ECDSA public key")
-	ErrNotECPrivateKey = errors.New("Key is not a valid ECDSA private key")
+	ErrNotECPublicKey  = errors.New("key is not a valid ECDSA public key")
+	ErrNotECPrivateKey = errors.New("key is not a valid ECDSA private key")
 )
 
 // Parse PEM encoded Elliptic Curve Private Key Structure

map_claims.go

@@ -72,17 +72,17 @@ func (m MapClaims) Valid() error {
 	now := TimeFunc().Unix()
 
 	if m.VerifyExpiresAt(now, false) == false {
-		vErr.Inner = errors.New("Token is expired")
+		vErr.Inner = errors.New("token is expired")
 		vErr.Errors |= ValidationErrorExpired
 	}
 
 	if m.VerifyIssuedAt(now, false) == false {
-		vErr.Inner = errors.New("Token used before issued")
+		vErr.Inner = errors.New("token used before issued")
 		vErr.Errors |= ValidationErrorIssuedAt
 	}
 
 	if m.VerifyNotBefore(now, false) == false {
-		vErr.Inner = errors.New("Token is not valid yet")
+		vErr.Inner = errors.New("token is not valid yet")
 		vErr.Errors |= ValidationErrorNotValidYet
 	}
 

rsa_utils.go

@@ -8,9 +8,9 @@ import (
 )
 
 var (
-	ErrKeyMustBePEMEncoded = errors.New("Invalid Key: Key must be PEM encoded PKCS1 or PKCS8 private key")
-	ErrNotRSAPrivateKey    = errors.New("Key is not a valid RSA private key")
-	ErrNotRSAPublicKey     = errors.New("Key is not a valid RSA public key")
+	ErrKeyMustBePEMEncoded = errors.New("invalid Key: Key must be PEM encoded PKCS1 or PKCS8 private key")
+	ErrNotRSAPrivateKey    = errors.New("key is not a valid RSA private key")
+	ErrNotRSAPublicKey     = errors.New("key is not a valid RSA public key")
 )
 
 // Parse PEM encoded PKCS1 or PKCS8 private key