Rename constants and globals following the Go naming convention

instead of WebCrypto's

webcrypto/algorithm.go

@@ -60,17 +60,17 @@ const (
 type HashAlgorithmIdentifier = AlgorithmIdentifier
 
 const (
-	// Sha1 represents the SHA-1 algorithm.
-	Sha1 HashAlgorithmIdentifier = "SHA-1"
+	// SHA1 represents the SHA-1 algorithm.
+	SHA1 HashAlgorithmIdentifier = "SHA-1"
 
-	// Sha256 represents the SHA-256 algorithm.
-	Sha256 = "SHA-256"
+	// SHA256 represents the SHA-256 algorithm.
+	SHA256 = "SHA-256"
 
-	// Sha384 represents the SHA-384 algorithm.
-	Sha384 = "SHA-384"
+	// SHA384 represents the SHA-384 algorithm.
+	SHA384 = "SHA-384"
 
-	// Sha512 represents the SHA-512 algorithm.
-	Sha512 = "SHA-512"
+	// SHA512 represents the SHA-512 algorithm.
+	SHA512 = "SHA-512"
 )
 
 // OperationIdentifier represents the name of an operation.
@@ -185,5 +185,5 @@ func isAesAlgorithm(algorithmName string) bool {
 }
 
 func isHashAlgorithm(algorithmName string) bool {
-	return algorithmName == Sha1 || algorithmName == Sha256 || algorithmName == Sha384 || algorithmName == Sha512
+	return algorithmName == SHA1 || algorithmName == SHA256 || algorithmName == SHA384 || algorithmName == SHA512
 }

webcrypto/hash.go

@@ -11,13 +11,13 @@ import (
 // hash.Hash instance.
 func getHashFn(name string) (func() hash.Hash, bool) {
 	switch name {
-	case Sha1:
+	case SHA1:
 		return crypto.SHA1.New, true
-	case Sha256:
+	case SHA256:
 		return crypto.SHA256.New, true
-	case Sha384:
+	case SHA384:
 		return crypto.SHA384.New, true
-	case Sha512:
+	case SHA512:
 		return crypto.SHA512.New, true
 	default:
 		return nil, false

webcrypto/hmac.go

@@ -99,13 +99,13 @@ func (hkgp *HMACKeyGenParams) GenerateKey(
 	// callback below could lead to a race condition.
 	if !hkgp.Length.Valid {
 		switch hkgp.Hash.Name {
-		case Sha1:
+		case SHA1:
 			hkgp.Length = null.IntFrom(sha1.BlockSize * 8)
-		case Sha256:
+		case SHA256:
 			hkgp.Length = null.IntFrom(sha256.BlockSize * 8)
-		case Sha384:
+		case SHA384:
 			hkgp.Length = null.IntFrom(sha512.BlockSize * 8)
-		case Sha512:
+		case SHA512:
 			hkgp.Length = null.IntFrom(sha512.BlockSize * 8)
 		default:
 			// This case should never happen, as the normalization algorithm