Simplify API

Sources/CryptoSwift/HMAC.swift

@@ -20,7 +20,7 @@ public final class HMAC: Authenticator {
   }
 
   public enum Variant {
-    case sha1, sha256, sha384, sha512, sha3_224, sha3_256, sha3_384, sha3_512, md5
+    case sha1, sha256, sha384, sha512, sha3(SHA3.Variant), md5
 
     var digestLength: Int {
       switch self {
@@ -32,14 +32,8 @@ public final class HMAC: Authenticator {
           return SHA2.Variant.sha384.digestLength
         case .sha512:
           return SHA2.Variant.sha512.digestLength
-        case .sha3_224:
-            return SHA3.Variant.sha224.digestLength
-        case .sha3_256:
-            return SHA3.Variant.sha256.digestLength
-        case .sha3_384:
-            return SHA3.Variant.sha384.digestLength
-        case .sha3_512:
-            return SHA3.Variant.sha512.digestLength
+        case .sha3(let variant):
+            return variant.digestLength
         case .md5:
           return MD5.digestLength
       }
@@ -55,14 +49,8 @@ public final class HMAC: Authenticator {
           return Digest.sha384(bytes)
         case .sha512:
           return Digest.sha512(bytes)
-        case .sha3_224:
-            return Digest.sha3(bytes, variant: .sha224)
-        case .sha3_256:
-            return Digest.sha3(bytes, variant: .sha256)
-        case .sha3_384:
-            return Digest.sha3(bytes, variant: .sha384)
-        case .sha3_512:
-            return Digest.sha3(bytes, variant: .sha512)
+        case .sha3(let variant):
+          return Digest.sha3(bytes, variant: variant)
         case .md5:
           return Digest.md5(bytes)
       }
@@ -76,14 +64,8 @@ public final class HMAC: Authenticator {
           return 64
         case .sha384, .sha512:
           return 128
-        case .sha3_224:
-            return SHA3.Variant.sha224.blockSize
-        case .sha3_256:
-            return SHA3.Variant.sha256.blockSize
-        case .sha3_384:
-            return SHA3.Variant.sha384.blockSize
-        case .sha3_512:
-            return SHA3.Variant.sha512.blockSize
+        case .sha3(let variant):
+            return variant.blockSize
       }
     }
   }