IOS-2399: Make sum public

tangem · Oct 26, 2022 · a64f9ce · a64f9ce
1 parent 03ab40c
commit a64f9ce
Showing 1 changed file with 21 additions and 21 deletions.
diff --git a/TangemSdk/TangemSdk/Crypto/Secp256k1Utils.swift b/TangemSdk/TangemSdk/Crypto/Secp256k1Utils.swift
@@ -54,6 +54,27 @@ public final class Secp256k1Utils {
         return try serializeDer(&sig)
     }
 
+    public func sum(compressedPubKey1: Data, compressedPubKey2: Data) throws -> Data {
+        var pubKey1 = try parsePublicKey(compressedPubKey1)
+        var pubKey2 = try parsePublicKey(compressedPubKey2)
+        var publicKeySecp = secp256k1_pubkey()
+        var result: Int32 = 0
+
+        withUnsafePointer(to: &pubKey1) { pointer1 in
+            withUnsafePointer(to: &pubKey2) { pointer2 in
+                var pubkeyPointers: [UnsafePointer<secp256k1_pubkey>?] = [pointer1, pointer2]
+
+                result = secp256k1_ec_pubkey_combine(context, &publicKeySecp, &pubkeyPointers, 2)
+            }
+        }
+
+        guard result == 1 else {
+            throw TangemSdkError.cryptoUtilsError("Failed to sum keys")
+        }
+
+        return try serializePublicKey(&publicKeySecp, compressed: true)
+    }
+
     func compressKey(_ publicKey: Data) throws -> Data {
         if publicKey.count == 33 {
             return publicKey
@@ -97,27 +118,6 @@ public final class Secp256k1Utils {
         return try serializePublicKey(&publicKey, compressed: compressed)
     }
 
-    func sum(compressedPubKey1: Data, compressedPubKey2: Data) throws -> Data {
-        var pubKey1 = try parsePublicKey(compressedPubKey1)
-        var pubKey2 = try parsePublicKey(compressedPubKey2)
-        var publicKeySecp = secp256k1_pubkey()
-        var result: Int32 = 0
-
-        withUnsafePointer(to: &pubKey1) { pointer1 in
-            withUnsafePointer(to: &pubKey2) { pointer2 in
-                var pubkeyPointers: [UnsafePointer<secp256k1_pubkey>?] = [pointer1, pointer2]
-
-                result = secp256k1_ec_pubkey_combine(context, &publicKeySecp, &pubkeyPointers, 2)
-            }
-        }
-
-        guard result == 1 else {
-            throw TangemSdkError.cryptoUtilsError("Failed to sum keys")
-        }
-
-        return try serializePublicKey(&publicKeySecp, compressed: true)
-    }
-
     func serializeDer(_ signature: inout secp256k1_ecdsa_signature) throws -> Data {
         var length: Int = 128
         var der = [UInt8].init(repeating: UInt8(0x0), count: Int(length))