@@ -22,10 +22,13 @@
 #import "OFSHA1Hash.h"
 #import "OFSecureData.h"
 
 #import "OFHashAlreadyCalculatedException.h"
 #import "OFOutOfRangeException.h"
+
+#define DIGEST_SIZE 20
+#define BLOCK_SIZE 64
 
 @interface OFSHA1Hash ()
 - (void)of_resetState;
 @end
 
@@ -96,16 +99,16 @@
 @implementation OFSHA1Hash
 @synthesize calculated = _calculated;
 
 + (size_t)digestSize
 {
-	return 20;
+	return DIGEST_SIZE;
 }
 
 + (size_t)blockSize
 {
-	return 64;
+	return BLOCK_SIZE;
 }
 
 + (instancetype)cryptoHash
 {
 	return [[[self alloc] init] autorelease];
@@ -138,10 +141,20 @@
 {
 	[_iVarsData release];
 
 	[super dealloc];
 }
+
+- (size_t)digestSize
+{
+	return DIGEST_SIZE;
+}
+
+- (size_t)blockSize
+{
+	return BLOCK_SIZE;
+}
 
 - (id)copy
 {
 	OFSHA1Hash *copy = [[OFSHA1Hash alloc] of_init];