fixed

Author: deatil

build.zig.zon

@@ -1,7 +1,7 @@
 .{
     .name = .zig_jwt,
     .description = "A JWT (JSON Web Token) library for zig.",
-    .version = "1.0.20",
+    .version = "1.0.21",
     .fingerprint = 0x30a5aec248bd7ac3, 
     .minimum_zig_version = "0.14.0-dev.3451+d8d2aa9af",
     .dependencies = .{},

src/blake2b.zig

@@ -35,18 +35,15 @@ pub fn SignBlake2b(comptime Hash: type, comptime name: []const u8) type {
                 return error.JWTKeyTooShort;
             }
 
+            var out: [digest_length]u8 = undefined;
+
             var h = Hash.init(.{
                 .key = key,
             });
             h.update(msg[0..]);
-
-            var out: [digest_length]u8 = undefined;
             h.final(out[0..]);
 
-            const out_string = try self.alloc.alloc(u8, @as(usize, @intCast(self.signLength())));
-            @memcpy(out_string[0..], out[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, out[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: []const u8) bool {
@@ -59,12 +56,12 @@ pub fn SignBlake2b(comptime Hash: type, comptime name: []const u8) type {
                 return false;
             }
 
+            var out: [digest_length]u8 = undefined;
+
             var h = Hash.init(.{
                 .key = key,
             });
             h.update(msg[0..]);
-
-            var out: [digest_length]u8 = undefined;
             h.final(out[0..]);
 
             if (std.mem.eql(u8, out[0..], signature[0..])) {

src/ecdsa.zig

@@ -39,12 +39,9 @@ pub fn SignECDSA(comptime EC: type, comptime name: []const u8) type {
             var secret_key = try EC.KeyPair.fromSecretKey(key);
 
             const sig = try secret_key.sign(msg[0..], null);
-            const out: [encoded_length]u8 = sig.toBytes();
+            const out = sig.toBytes();
 
-            const out_string = try self.alloc.alloc(u8, @as(usize, @intCast(self.signLength())));
-            @memcpy(out_string[0..], out[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, out[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: EC.PublicKey) bool {

src/eddsa.zig

@@ -36,12 +36,9 @@ pub fn SignEdDSA(comptime name: []const u8) type {
             var secret_key = try Ed25519.KeyPair.fromSecretKey(key);
 
             const sig = try secret_key.sign(msg[0..], null);
-            var out: [encoded_length]u8 = sig.toBytes();     
+            var out = sig.toBytes();
 
-            const out_string = try self.alloc.alloc(u8, @as(usize, @intCast(self.signLength())));
-            @memcpy(out_string[0..], out[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, out[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: Ed25519.PublicKey) bool {

src/hmac.zig

@@ -36,16 +36,13 @@ pub fn SignHmac(comptime Hash: type, comptime name: []const u8) type {
         }
 
         pub fn sign(self: Self, msg: []const u8, key: []const u8) ![]u8 {
+            var out: [mac_length]u8 = undefined;
+
             var h = Hash.init(key);
             h.update(msg[0..]);
-
-            var out: [mac_length]u8 = undefined;
             h.final(out[0..]);
 
-            const out_string = try self.alloc.alloc(u8, @as(usize, @intCast(self.signLength())));
-            @memcpy(out_string[0..], out[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, out[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: []const u8) bool {
@@ -54,10 +51,10 @@ pub fn SignHmac(comptime Hash: type, comptime name: []const u8) type {
                 return false;
             }
 
+            var out: [mac_length]u8 = undefined;
+ 
             var h = Hash.init(key);
             h.update(msg[0..]);
-
-            var out: [mac_length]u8 = undefined;
             h.final(out[0..]);
 
             if (std.mem.eql(u8, out[0..], signature[0..])) {

src/rsa.zig

@@ -49,10 +49,7 @@ pub fn SignRSA(comptime RSAType: type, comptime name: []const u8) type {
 
             const signed = sig.toBytes();
 
-            const out_string = try self.alloc.alloc(u8, signed.len);
-            @memcpy(out_string[0..], signed[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, signed[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: rsa.PublicKey) bool {

src/rsa_pss.zig

@@ -48,10 +48,7 @@ pub fn SignRSAPss(comptime RSAPssType: type, comptime name: []const u8) type {
 
             const signed = sig.toBytes();
 
-            const out_string = try self.alloc.alloc(u8, signed.len);
-            @memcpy(out_string[0..], signed[0..]);
-
-            return out_string;
+            return self.alloc.dupe(u8, signed[0..]);
         }
 
         pub fn verify(self: Self, msg: []const u8, signature: []u8, key: rsa.PublicKey) bool {