✨ Add and implement OpRipeMd160, OP_SHA1, OP_SHA256, OP_HASH…

BitcoinCashKit.xcodeproj/project.pbxproj

@@ -87,6 +87,11 @@
 		14F37A3C20209F9200D34748 /* Script.swift in Sources */ = {isa = PBXBuildFile; fileRef = 14F37A3B20209F9200D34748 /* Script.swift */; };
 		14F37A3E2020A02000D34748 /* SighashType.swift in Sources */ = {isa = PBXBuildFile; fileRef = 14F37A3D2020A02000D34748 /* SighashType.swift */; };
 		290880152109708000C79379 /* OpCodeProtocol.swift in Sources */ = {isa = PBXBuildFile; fileRef = 290880142109708000C79379 /* OpCodeProtocol.swift */; };
+		2914BE41211BAAC900B349CB /* OP_RIPEMD160.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2914BE40211BAAC900B349CB /* OP_RIPEMD160.swift */; };
+		2914BE43211BAAE500B349CB /* OP_SHA256.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2914BE42211BAAE500B349CB /* OP_SHA256.swift */; };
+		2914BE45211BAAF400B349CB /* OP_SHA1.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2914BE44211BAAF400B349CB /* OP_SHA1.swift */; };
+		2914BE47211BAB0500B349CB /* OP_HASH256.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2914BE46211BAB0500B349CB /* OP_HASH256.swift */; };
+		2914BE49211BAB1900B349CB /* OP_CODESEPARATOR.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2914BE48211BAB1900B349CB /* OP_CODESEPARATOR.swift */; };
 		29248EEF2104B64E00CC9051 /* ScriptChunkHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = 29248EEE2104B64E00CC9051 /* ScriptChunkHelper.swift */; };
 		29290B8D210AF59600D2BE78 /* OpCodeFactory.swift in Sources */ = {isa = PBXBuildFile; fileRef = 29290B8C210AF59600D2BE78 /* OpCodeFactory.swift */; };
 		29290B91210AF79300D2BE78 /* OP_DUP.swift in Sources */ = {isa = PBXBuildFile; fileRef = 29290B90210AF79300D2BE78 /* OP_DUP.swift */; };
@@ -247,6 +252,11 @@
 		14F37A3B20209F9200D34748 /* Script.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Script.swift; sourceTree = "<group>"; };
 		14F37A3D2020A02000D34748 /* SighashType.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SighashType.swift; sourceTree = "<group>"; };
 		290880142109708000C79379 /* OpCodeProtocol.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OpCodeProtocol.swift; sourceTree = "<group>"; };
+		2914BE40211BAAC900B349CB /* OP_RIPEMD160.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_RIPEMD160.swift; sourceTree = "<group>"; };
+		2914BE42211BAAE500B349CB /* OP_SHA256.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_SHA256.swift; sourceTree = "<group>"; };
+		2914BE44211BAAF400B349CB /* OP_SHA1.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_SHA1.swift; sourceTree = "<group>"; };
+		2914BE46211BAB0500B349CB /* OP_HASH256.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_HASH256.swift; sourceTree = "<group>"; };
+		2914BE48211BAB1900B349CB /* OP_CODESEPARATOR.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_CODESEPARATOR.swift; sourceTree = "<group>"; };
 		29248EEE2104B64E00CC9051 /* ScriptChunkHelper.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ScriptChunkHelper.swift; sourceTree = "<group>"; };
 		29290B8C210AF59600D2BE78 /* OpCodeFactory.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OpCodeFactory.swift; sourceTree = "<group>"; };
 		29290B90210AF79300D2BE78 /* OP_DUP.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OP_DUP.swift; sourceTree = "<group>"; };
@@ -523,7 +533,12 @@
 		294DDE38211B2B5900B7F645 /* Crypto Operators */ = {
 			isa = PBXGroup;
 			children = (
+				2914BE40211BAAC900B349CB /* OP_RIPEMD160.swift */,
+				2914BE44211BAAF400B349CB /* OP_SHA1.swift */,
+				2914BE42211BAAE500B349CB /* OP_SHA256.swift */,
 				29290B9A210AF88C00D2BE78 /* OP_HASH160.swift */,
+				2914BE46211BAB0500B349CB /* OP_HASH256.swift */,
+				2914BE48211BAB1900B349CB /* OP_CODESEPARATOR.swift */,
 				29290B96210AF87800D2BE78 /* OP_CHECKSIG.swift */,
 				29290BA6210C01E800D2BE78 /* OP_CHECKSIGVERIFY.swift */,
 				29E1ED72210ECD35007F4627 /* OP_CHECKMULTISIG.swift */,
@@ -802,11 +817,13 @@
 				294DDE3B211B31B100B7F645 /* OP_NOP.swift in Sources */,
 				CFA2906E2101CDA3001A1BAB /* Opcode.swift in Sources */,
 				29290BA1210AF90D00D2BE78 /* OP_VERIFY.swift in Sources */,
+				2914BE41211BAAC900B349CB /* OP_RIPEMD160.swift in Sources */,
 				29E1ED75210EF071007F4627 /* OP_CHECKMULTISIGVERIFY.swift in Sources */,
 				294DDE3F211B31CB00B7F645 /* OP_IF.swift in Sources */,
 				29290B8D210AF59600D2BE78 /* OpCodeFactory.swift in Sources */,
 				147F9729201FC89E0071F49D /* BloomFilter.swift in Sources */,
 				0C1DD40A211819CE004BA8A8 /* OP_GREATERTHAN.swift in Sources */,
+				2914BE49211BAB1900B349CB /* OP_CODESEPARATOR.swift in Sources */,
 				29F5D1E6211068E8007DA3BF /* BigNumber.swift in Sources */,
 				0C1DD41021181AF3004BA8A8 /* OP_NUMEQUAL.swift in Sources */,
 				14839AA9202FE7DD00A6CB34 /* VarString.swift in Sources */,
@@ -817,13 +834,15 @@
 				29290B9B210AF88C00D2BE78 /* OP_HASH160.swift in Sources */,
 				14CDC3862021824200C01556 /* Wallet.swift in Sources */,
 				0C1DD41621181CC0004BA8A8 /* OP_GREATERTHANOREQUAL.swift in Sources */,
+				2914BE45211BAAF400B349CB /* OP_SHA1.swift in Sources */,
 				29290B9D210AF8DF00D2BE78 /* OP_INVALIDOPCODE.swift in Sources */,
 				141FE2E42022589E00A08B04 /* PrivateKey.swift in Sources */,
 				299CB46F20EE1EA500B1245C /* Transaction+SignatureHash.swift in Sources */,
 				294DDE49211B322E00B7F645 /* OP_ENDIF.swift in Sources */,
 				0C1DD40E21181AAC004BA8A8 /* OP_NUMNOTEQUAL.swift in Sources */,
 				0C1DD41D21182043004BA8A8 /* OP_SUB.swift in Sources */,
 				29290B93210AF86400D2BE78 /* OP_0.swift in Sources */,
+				2914BE47211BAB0500B349CB /* OP_HASH256.swift in Sources */,
 				2949920020F227EB00D078B6 /* VersionByte.swift in Sources */,
 				29248EEF2104B64E00CC9051 /* ScriptChunkHelper.swift in Sources */,
 				14839A85202FE60E00A6CB34 /* InventoryMessage.swift in Sources */,
@@ -864,6 +883,7 @@
 				1482B5E22026B0680098B612 /* Mnemonic.swift in Sources */,
 				2949920620F22DCA00D078B6 /* UnsignedTransaction.swift in Sources */,
 				14839A9B202FE71200A6CB34 /* TransactionInput.swift in Sources */,
+				2914BE43211BAAE500B349CB /* OP_SHA256.swift in Sources */,
 				0C0900342116A53F0077E9BC /* OP_NOT.swift in Sources */,
 				CFA290722102B635001A1BAB /* ScriptMachine.swift in Sources */,
 				294DDE45211B31FA00B7F645 /* OP_VERNOTIF.swift in Sources */,

BitcoinCashKit/Core/BitcoinCashKitPrivate.h

@@ -29,6 +29,7 @@
 NS_ASSUME_NONNULL_BEGIN
 @interface _Hash : NSObject
 
++ (NSData *)sha1:(NSData *)data;
 + (NSData *)sha256:(NSData *)data;
 + (NSData *)ripemd160:(NSData *)data;
 + (NSData *)hmacsha512:(NSData *)data key:(NSData *)key;

BitcoinCashKit/Core/BitcoinCashKitPrivate.m

@@ -32,6 +32,12 @@
 
 @implementation _Hash
 
++ (NSData *)sha1:(NSData *)data {
+    NSMutableData *result = [NSMutableData dataWithLength:SHA512_DIGEST_LENGTH];
+    SHA1(data.bytes, data.length, result.mutableBytes);
+    return result;
+}
+
 + (NSData *)sha256:(NSData *)data {
     NSMutableData *result = [NSMutableData dataWithLength:SHA256_DIGEST_LENGTH];
     SHA256(data.bytes, data.length, result.mutableBytes);

BitcoinCashKit/Core/Crypto.swift

@@ -28,6 +28,10 @@ import BitcoinCashKit.Private
 import secp256k1
 
 public struct Crypto {
+    public static func sha1(_ data: Data) -> Data {
+        return _Hash.sha1(data)
+    }
+
     public static func sha256(_ data: Data) -> Data {
         return _Hash.sha256(data)
     }

BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_CODESEPARATOR.swift

@@ -0,0 +1,19 @@
+//
+//  OP_CODESEPARATOR.swift
+//  BitcoinCashKit
+//
+//  Created by Shun Usami on 2018/08/09.
+//  Copyright © 2018 BitcoinCashKit developers. All rights reserved.
+//
+
+import Foundation
+
+// All of the signature checking words will only match signatures to the data after the most recently-executed OP_CODESEPARATOR.
+public struct OpCodeSeparator: OpCodeProtocol {
+    public var value: UInt8 { return 0xab }
+    public var name: String { return "OP_CODESEPARATOR" }
+
+    public func mainProcess(_ context: ScriptExecutionContext) throws {
+        // do nothing
+    }
+}

BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_HASH256.swift

@@ -0,0 +1,25 @@
+//
+//  OP_HASH256.swift
+//  BitcoinCashKit
+//
+//  Created by Shun Usami on 2018/08/09.
+//  Copyright © 2018 BitcoinCashKit developers. All rights reserved.
+//
+
+import Foundation
+
+// The input is hashed two times with SHA-256.
+public struct OpHash256: OpCodeProtocol {
+    public var value: UInt8 { return 0xaa }
+    public var name: String { return "OP_HASH256" }
+
+    // input : in
+    // output : hash
+    public func mainProcess(_ context: ScriptExecutionContext) throws {
+        try context.assertStackHeightGreaterThan(1)
+
+        let data: Data = context.stack.removeLast()
+        let hash: Data = Crypto.sha256sha256(data)
+        context.stack.append(hash)
+    }
+}

BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_RIPEMD160.swift

@@ -0,0 +1,25 @@
+//
+//  OP_RIPEMD160.swift
+//  BitcoinCashKit
+//
+//  Created by Shun Usami on 2018/08/09.
+//  Copyright © 2018 BitcoinCashKit developers. All rights reserved.
+//
+
+import Foundation
+
+// The input is hashed using RIPEMD-160.
+public struct OpRipemd160: OpCodeProtocol {
+    public var value: UInt8 { return 0xa6 }
+    public var name: String { return "OP_RIPEMD160" }
+
+    // input : in
+    // output : hash
+    public func mainProcess(_ context: ScriptExecutionContext) throws {
+        try context.assertStackHeightGreaterThan(1)
+
+        let data: Data = context.stack.removeLast()
+         let hash: Data = Crypto.ripemd160(data)
+        context.stack.append(hash)
+    }
+}

BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_SHA1.swift

@@ -0,0 +1,25 @@
+//
+//  OP_SHA1.swift
+//  BitcoinCashKit
+//
+//  Created by Shun Usami on 2018/08/09.
+//  Copyright © 2018 BitcoinCashKit developers. All rights reserved.
+//
+
+import Foundation
+
+// The input is hashed using SHA-1.
+public struct OpSha1: OpCodeProtocol {
+    public var value: UInt8 { return 0xa7 }
+    public var name: String { return "OP_SHA1" }
+
+    // input : in
+    // output : hash
+    public func mainProcess(_ context: ScriptExecutionContext) throws {
+        try context.assertStackHeightGreaterThan(1)
+
+        let data: Data = context.stack.removeLast()
+        let hash: Data = Crypto.sha1(data)
+        context.stack.append(hash)
+    }
+}

BitcoinCashKit/Core/Scripts/OP_CODE/Crypto Operators/OP_SHA256.swift

@@ -0,0 +1,25 @@
+//
+//  OP_SHA256.swift
+//  BitcoinCashKit
+//
+//  Created by Shun Usami on 2018/08/09.
+//  Copyright © 2018 BitcoinCashKit developers. All rights reserved.
+//
+
+import Foundation
+
+// The input is hashed using SHA-256.
+public struct OpSha256: OpCodeProtocol {
+    public var value: UInt8 { return 0xa8 }
+    public var name: String { return "OP_SHA256" }
+
+    // input : in
+    // output : hash
+    public func mainProcess(_ context: ScriptExecutionContext) throws {
+        try context.assertStackHeightGreaterThan(1)
+
+        let data: Data = context.stack.removeLast()
+         let hash: Data = Crypto.sha256(data)
+        context.stack.append(hash)
+    }
+}

BitcoinCashKit/Core/Scripts/Opcode.swift

@@ -136,12 +136,12 @@ public enum OpCode: OpCodeProtocol {
         case .OP_WITHIN: return OpWithin()
 
         // Crypto
-        case .OP_RIPEMD160: return OpExample()
-        case .OP_SHA1: return OpExample()
-        case .OP_SHA256: return OpExample()
+        case .OP_RIPEMD160: return OpRipemd160()
+        case .OP_SHA1: return OpSha1()
+        case .OP_SHA256: return OpSha256()
         case .OP_HASH160: return OpHash160()
-        case .OP_HASH256: return OpExample()
-        case .OP_CODESEPARATOR: return OpExample()
+        case .OP_HASH256: return OpHash256()
+        case .OP_CODESEPARATOR: return OpCodeSeparator()
         case .OP_CHECKSIG: return OpCheckSig()
         case .OP_CHECKSIGVERIFY: return OpCheckSigVerify()
         case .OP_CHECKMULTISIG: return OpCheckMultiSig()