{"id":149620,"date":"2020-08-30T15:58:07","date_gmt":"2020-08-30T07:58:07","guid":{"rendered":"http:\/\/4563.org\/?p=149620"},"modified":"2020-08-30T15:58:07","modified_gmt":"2020-08-30T07:58:07","slug":"%e4%b8%80%e6%ae%b5-object-c-%e4%bb%a3%e7%a0%81%e6%83%b3%e8%bd%ac-swift-%ef%bc%8c%e6%9c%89%e4%bb%80%e4%b9%88%e6%96%b9%e6%b3%95%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=149620","title":{"rendered":"\u4e00\u6bb5 object c \u4ee3\u7801\u60f3\u8f6c Swift \uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u5417\uff1f"},"content":{"rendered":"
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\u4e00\u6bb5 object c \u4ee3\u7801\u60f3\u8f6c Swift \uff0c\u6709\u4ec0\u4e48\u65b9\u6cd5\u5417\uff1f <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : chillwind <\/span> <\/i> 12<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n
- (NSData *)AES256EncryptWithKey:(NSString *)key {     NSUInteger dataLength = [self length];     size_t bufferSize = dataLength + kCCBlockSizeAES128;     void *buffer = malloc(bufferSize);     NSMutableData *data = [[NSData randomDataWithLength:AES_256_IV_SIZE] mutableCopy];  \/\/IV          size_t numBytesEncrypted = 0;     CCCryptorStatus cryptStatus = CCCrypt(kCCEncrypt,                                           kCCAlgorithmAES128,                                           kCCOptionPKCS7Padding,                                           [key cStringUsingEncoding:NSUTF8StringEncoding],                                           [key length],                                           [data bytes],                                           [self bytes],                                           dataLength,                                           buffer,                                           bufferSize,                                           &numBytesEncrypted);               if (cryptStatus == kCCSuccess) {         NSData *message = [NSData dataWithBytes:buffer                                          length:numBytesEncrypted]; \/\/Message         \/* Do HMac *\/         NSData *keyData = [key dataUsingEncoding:NSUTF8StringEncoding];         NSData *hmac = [message doHmacWithKeyData:keyData];          \/* IV+Message+HMac *\/         [data appendData:message];         [data appendData:hmac];          free(buffer);         return data;     }     free(buffer);     return nil; }  - (NSData *)doHmacWithKeyData:(NSData *)salt {     NSMutableData *macOut = [NSMutableData dataWithLength:CC_SHA256_DIGEST_LENGTH];     CCHmac(kCCHmacAlgSHA256,            salt.bytes,            salt.length,            self.bytes,            self.length,            macOut.mutableBytes);          return macOut; } <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (5<\/span>)        <\/div>\n
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  • \n
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     \u8cc7\u6df1\u5927\u4f6c : finab <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/swiftify.com\/converter\/code\/
    \u8fd9\u4e2a\u53ef\u4ee5\u5c06 Objc \u4ee3\u7801\u8f6c\u6210 Swift\uff0c\u53ef\u80fd\u4f1a\u6709\u4e00\u4e9b\u9519\u8bef\uff0c\u9700\u8981\u4fee\u6539\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : CommandZi <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/github.com\/onmyway133\/Arcane\/blob\/master\/Sources\/Arcane\/AES.swift                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : chiaf <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @finab \u8fd9\u4e2a\u4e0d\u9519\uff0c\u9700\u8981\u6ce8\u610f\u7684\u5730\u65b9\uff0c\u975e\u767b\u5f55\u60c5\u51b5\u4e0b\uff0c\u652f\u6301 1K \u4ee5\u4e0b\u7684\u4ee3\u7801                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : chillwind <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u770b\u4e86\u534a\u5929 swift\uff0c\u81ea\u5df1\u4eba\u8089\u8f6c\u4e86\u4e00\u4e2a\u3002\u7528\u7684\u4e0d\u5bf9\u7684\u5730\u65b9\uff0c\u8fd8\u8bf7\u5404\u4f4d\u6307\u6b63
    “`
    import Foundation
    import CommonCrypto<\/p>\n
    struct AES {<\/p>\n
     \/\/ MARK: – Value
     \/\/ MARK: Private
     private let key: Data
     \/\/ MARK: – Initialzier
     init?(key: String) {
     guard key.count == kCCKeySizeAES128 || key.count == kCCKeySizeAES256, let keyData = key.data(using: .utf8) else {
     debugPrint(“Error: Failed to set a key.”)
     return nil
     }<\/p>\n
     self.key = keyData<\/p>\n
     }<\/p>\n
     \/\/ MARK: – Function
     \/\/ MARK: Public
     func encrypt(string: String) -> Data? {<\/p>\n
     let iv = randomGenerateBytes(count: 16)!<\/p>\n
     let cryptData = crypt(data: string.data(using: .utf8), iv: iv, option: CCOperation(kCCEncrypt))!<\/p>\n
     var hmac = Data(count: 32)
     cryptData.withUnsafeBytes { v in
     hmac.withUnsafeMutableBytes { res in
     key.withUnsafeBytes { k in
     CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), k.baseAddress!, key.count, v.baseAddress!, cryptData.count, res.baseAddress!)
     }
     }
     }<\/p>\n
     let messageData = NSMutableData()
     messageData.append(iv)
     messageData.append(cryptData)
     messageData.append(hmac)<\/p>\n
     return messageData as Data
     }<\/p>\n
     func decrypt(data: Data) -> String? {
     \/\/\u9a8c\u8bc1\u6570\u636e
     let ivByteData = data.subdata(in: 0..<16)<\/p>\n
     let contentByteData = data.subdata(in: 16..<(data.count – 32))<\/p>\n
     let serverHmacData = data.subdata(in: (data.count – 32)..<data.count)
     print(data.count)<\/p>\n
     var hmac = Data(count: 32)
     contentByteData.withUnsafeBytes { v in
     hmac.withUnsafeMutableBytes { res in
     key.withUnsafeBytes { k in
     CCHmac(CCHmacAlgorithm(kCCHmacAlgSHA256), k.baseAddress!, key.count, v.baseAddress!, contentByteData.count, res.baseAddress!)
     }
     }
     }<\/p>\n
     if (serverHmacData == hmac) {
     let decryptedData = crypt(data: contentByteData, iv: ivByteData, option: CCOperation(kCCDecrypt))
     return String(bytes: decryptedData!, encoding: .utf8)
     } else {
     print(“HMac \u4e0d\u4e00\u81f4”)
     return nil;
     }<\/p>\n
     }<\/p>\n
     func crypt(data: Data?, iv: Data, option: CCOperation) -> Data? {
     guard let data = data else { return nil }<\/p>\n
     let cryptLength = data.count + kCCBlockSizeAES128*2
     var cryptData = Data(count: cryptLength)<\/p>\n
     let keyLength = key.count
     let options = CCOptions(kCCOptionPKCS7Padding)<\/p>\n
     var bytesLength = Int(0)<\/p>\n
     let status = cryptData.withUnsafeMutableBytes { cryptBytes in
     data.withUnsafeBytes { dataBytes in
     iv.withUnsafeBytes { ivBytes in
     key.withUnsafeBytes { keyBytes in
     CCCrypt(option, CCAlgorithm(kCCAlgorithmAES128), options, keyBytes.baseAddress, keyLength, ivBytes.baseAddress, dataBytes.baseAddress, data.count, cryptBytes.baseAddress, cryptLength, &bytesLength)
     }
     }
     }
     }<\/p>\n
     guard UInt32(status) == UInt32(kCCSuccess) else {
     debugPrint(“Error: Failed to crypt data. Status (status)”)
     return nil
     }<\/p>\n
     cryptData.removeSubrange(bytesLength..<cryptData.count)<\/p>\n
     return cryptData
     }<\/p>\n
     func randomGenerateBytes(count: Int) -> Data? {
     let bytes = UnsafeMutableRawPointer.allocate(byteCount: count, alignment: 1)
     defer { bytes.deallocate() }
     let status = CCRandomGenerateBytes(bytes, count)
     guard status == kCCSuccess else { return nil }
     return Data(bytes: bytes, count: count)
     }
    }<\/p>\n
    “`                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : zyc199847 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 swift \u7684\u8bdd\uff0c\u53ef\u4ee5\u8bd5\u8bd5\u539f\u751f\u7684 CryptoSwift \u3002https:\/\/github.com\/krzyzanowskim\/CryptoSwift                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u4e00\u6bb5 object c \u4ee3\u7801\u60f3\u8f6c …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/149620"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=149620"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/149620\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=149620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=149620"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=149620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}