Refactored the BLAKE2 algorithm and updated it so it now returns the hash in hexadecimal.

algorithms/blake2/CheckHash.go

@@ -3,13 +3,14 @@ package blake2
 import (
 	// Standard
 	"crypto/subtle"
+	"encoding/hex"
 
 	// Standard Extended
 	"golang.org/x/crypto/blake2b"
 )
 
 // Check Hash
-func (algorithm Algorithm) CheckHash(data []byte, hashToCheck []byte) (bool, error) {
+func (algorithm Algorithm) CheckHash(data []byte, hashToCheck string) (bool, error) {
 	// Hasher
 	hasher, err := blake2b.New(algorithm.size, nil)
 	// Handle Error
@@ -22,6 +23,12 @@ func (algorithm Algorithm) CheckHash(data []byte, hashToCheck []byte) (bool, err
 	if err != nil {
 		return false, err
 	}
+	// Decode Hash To Check
+	decodedHashToCheck, err := hex.DecodeString(hashToCheck)
+	// Handle Error
+	if err != nil {
+		return false, err
+	}
 	// Return Match
-	return subtle.ConstantTimeCompare(hasher.Sum(nil), hashToCheck) == 1, err
+	return subtle.ConstantTimeCompare(hasher.Sum(nil), decodedHashToCheck) == 1, err
 }

algorithms/blake2/Hash.go

@@ -1,24 +1,27 @@
 package blake2
 
 import (
+	// Standard
+	"encoding/hex"
+
 	// Standard Extended
 	"golang.org/x/crypto/blake2b"
 )
 
 // Hash
-func (algorithm Algorithm) Hash(data []byte) ([]byte, error) {
+func (algorithm Algorithm) Hash(data []byte) (string, error) {
 	// Hasher
 	hasher, err := blake2b.New(algorithm.size, nil)
 	// Handle Error
 	if err != nil {
-		return []byte(""), err
+		return "", err
 	}
 	// Write To Hasher
 	_, err = hasher.Write(data)
 	// Handle Error
 	if err != nil {
-		return []byte(""), err
+		return "", err
 	}
 	// Return Hash
-	return hasher.Sum(nil), err
+	return hex.EncodeToString(hasher.Sum(nil)), err
 }