Sign: check & sanitize config

errors.go

@@ -5,8 +5,21 @@ import (
 )
 
 var (
-	// ErrConfigNoPrivateKey when there not private key in config
-	ErrConfigNoPrivateKey = errors.New("private key not defined in config")
-	// ErrConfigNoDomain when there is no domain defined in config
-	ErrConfigNoDomain = errors.New("domain not defined in config")
+	// ErrConfigPrivateKeyRequired when there not private key in config
+	ErrSignPrivateKeyRequired = errors.New("PrivateKey is required in config")
+
+	// ErrSignDomainRequired when there is no domain defined in config
+	ErrSignDomainRequired = errors.New("Domain is required in config")
+
+	// ErrSignSelectorRequired when there is no Selcteir defined in config
+	ErrSignSelectorRequired = errors.New("Selector is required in config")
+
+	// If Headers is specified it should at least contain 'from'
+	ErrSignHeaderShouldContainsFrom = errors.New("Header must contains 'from' field")
+
+	// If bad Canonicalization parameter
+	ErrSignBadCanonicalization = errors.New("bad Canonicalization parameter")
+
+	// Bad algorithm
+	ErrSignBadAlgo = errors.New("bar algorithm. Only rsa-sha1 or rsa-sha256 are permitted")
 )