macos - स्विफ्ट में CommonHMAC




hash swift (7)

मैं स्विफ्ट में एक स्ट्रिंग का एचएमएसी SHA-1 हैश बनाने की कोशिश कर रहा हूं लेकिन यह पता नहीं लगा सकता कि एपीआई के साथ कैसे बातचीत करें क्योंकि यह कॉमनक्रिप्टो ढांचे को आयात नहीं कर रहा है। मैंने "आयात कॉमनक्रिप्टो" के विभिन्न रूपों की कोशिश की है और एक ब्रिजिंग हेडर फ़ाइल बना रही है लेकिन इसमें से कोई भी कोई फर्क नहीं पड़ता।

अजीब चीज यह है कि यदि मैं ऑब्जेक्टिव-सी क्लास बनाता हूं, तो मैं बिना किसी समस्या के एपीआई के साथ बातचीत करने में सक्षम हूं, इसलिए यह स्विफ्ट के लिए अद्वितीय प्रतीत होता है।

अगर कोई मुझे बता सकता है कि uint8_t digest[CC_SHA1_DIGEST_LENGTH] के बराबर क्या uint8_t digest[CC_SHA1_DIGEST_LENGTH] स्विफ्ट में है तो मैं बहुत आभारी हूं


आप इसे स्विफ्ट में कर सकते हैं। बस सुनिश्चित करें कि आप ब्रिजिंग उद्देश्य-सी ब्रिजिंग हेडर पर #import <CommonCrypto/CommonHMAC.h>

अपडेट करें: स्विफ्ट 4 के लिए यहां स्विफ्ट पैकेज मैनेजर का उपयोग करके एक बेहतर समाधान https://github.com/jernejstrasner/SwiftCrypto : https://github.com/jernejstrasner/SwiftCrypto

enum CryptoAlgorithm {
    case MD5, SHA1, SHA224, SHA256, SHA384, SHA512

    var HMACAlgorithm: CCHmacAlgorithm {
        var result: Int = 0
        switch self {
        case .MD5:      result = kCCHmacAlgMD5
        case .SHA1:     result = kCCHmacAlgSHA1
        case .SHA224:   result = kCCHmacAlgSHA224
        case .SHA256:   result = kCCHmacAlgSHA256
        case .SHA384:   result = kCCHmacAlgSHA384
        case .SHA512:   result = kCCHmacAlgSHA512
        }
        return CCHmacAlgorithm(result)
    }

    var digestLength: Int {
        var result: Int32 = 0
        switch self {
        case .MD5:      result = CC_MD5_DIGEST_LENGTH
        case .SHA1:     result = CC_SHA1_DIGEST_LENGTH
        case .SHA224:   result = CC_SHA224_DIGEST_LENGTH
        case .SHA256:   result = CC_SHA256_DIGEST_LENGTH
        case .SHA384:   result = CC_SHA384_DIGEST_LENGTH
        case .SHA512:   result = CC_SHA512_DIGEST_LENGTH
        }
        return Int(result)
    }
}

extension String {

    func hmac(algorithm: CryptoAlgorithm, key: String) -> String {
        let str = self.cStringUsingEncoding(NSUTF8StringEncoding)
        let strLen = Int(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
        let digestLen = algorithm.digestLength
        let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)
        let keyStr = key.cStringUsingEncoding(NSUTF8StringEncoding)
        let keyLen = Int(key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))

        CCHmac(algorithm.HMACAlgorithm, keyStr!, keyLen, str!, strLen, result)

        let digest = stringFromResult(result, length: digestLen)

        result.dealloc(digestLen)

        return digest
    }

    private func stringFromResult(result: UnsafeMutablePointer<CUnsignedChar>, length: Int) -> String {
        var hash = NSMutableString()
        for i in 0..<length {
            hash.appendFormat("%02x", result[i])
        }
        return String(hash)
    }

}

आपके महान उत्तर के लिए धन्यवाद । यहां मैं स्विफ्ट 3.1 के लिए अपना उत्तर अपडेट कर रहा हूं:

enum CryptoAlgorithm {
case MD5, SHA1, SHA224, SHA256, SHA384, SHA512

 var HMACAlgorithm: CCHmacAlgorithm {
    var result: Int = 0
    switch self {
    case .MD5:      result = kCCHmacAlgMD5
    case .SHA1:     result = kCCHmacAlgSHA1
    case .SHA224:   result = kCCHmacAlgSHA224
    case .SHA256:   result = kCCHmacAlgSHA256
    case .SHA384:   result = kCCHmacAlgSHA384
    case .SHA512:   result = kCCHmacAlgSHA512
    }
    return CCHmacAlgorithm(result)
 }

 var digestLength: Int {
    var result: Int32 = 0
    switch self {
    case .MD5:      result = CC_MD5_DIGEST_LENGTH
    case .SHA1:     result = CC_SHA1_DIGEST_LENGTH
    case .SHA224:   result = CC_SHA224_DIGEST_LENGTH
    case .SHA256:   result = CC_SHA256_DIGEST_LENGTH
    case .SHA384:   result = CC_SHA384_DIGEST_LENGTH
    case .SHA512:   result = CC_SHA512_DIGEST_LENGTH
    }
    return Int(result)
 }
}

extension String {

func hmac(algorithm: CryptoAlgorithm, key: String) -> String {
    let str = self.cString(using: String.Encoding.utf8)
    let strLen = Int(self.lengthOfBytes(using: String.Encoding.utf8))
    let digestLen = algorithm.digestLength
    let result = UnsafeMutablePointer<CUnsignedChar>.allocate(capacity: digestLen)
    let keyStr = key.cString(using: String.Encoding.utf8)
    let keyLen = Int(key.lengthOfBytes(using: String.Encoding.utf8))

    CCHmac(algorithm.HMACAlgorithm, keyStr!, keyLen, str!, strLen, result)

    let digest = stringFromResult(result: result, length: digestLen)

    result.deallocate(capacity: digestLen)

    return digest
}

private func stringFromResult(result: UnsafeMutablePointer<CUnsignedChar>, length: Int) -> String {
    let hash = NSMutableString()
    for i in 0..<length {
        hash.appendFormat("%02x", result[i])
    }
    return String(hash)
}

और इसका उपयोग करने के लिए भी:

func sha256(StringToSign : String, secretKey : String) -> String{

    let hex = StringToSign.hmac(algorithm: .SHA256, key: secretKey)
    let hexData = hex.data(using: String.Encoding.utf8)
    let finalString = hexData?.base64EncodedString(options: [.lineLength64Characters])

    return finalString!

}

गिथूब repo पर स्विफ्ट 4 संस्करण डेमो


नीचे @ jernej-strasner पोस्ट करने के लिए एक सही संस्करण है

enum HMACAlgorithm {
    case MD5, SHA1, SHA224, SHA256, SHA384, SHA512

    func toCCEnum() -> CCHmacAlgorithm {
        var result: Int = 0
        switch self {
        case .MD5:
            result = kCCHmacAlgMD5
        case .SHA1:
            result = kCCHmacAlgSHA1
        case .SHA224:
            result = kCCHmacAlgSHA224
        case .SHA256:
            result = kCCHmacAlgSHA256
        case .SHA384:
            result = kCCHmacAlgSHA384
        case .SHA512:
            result = kCCHmacAlgSHA512
        }
        return CCHmacAlgorithm(result)
    }

    func digestLength() -> Int {
        var result: CInt = 0
        switch self {
        case .MD5:
            result = CC_MD5_DIGEST_LENGTH
        case .SHA1:
            result = CC_SHA1_DIGEST_LENGTH
        case .SHA224:
            result = CC_SHA224_DIGEST_LENGTH
        case .SHA256:
            result = CC_SHA256_DIGEST_LENGTH
        case .SHA384:
            result = CC_SHA384_DIGEST_LENGTH
        case .SHA512:
            result = CC_SHA512_DIGEST_LENGTH
        }
        return Int(result)
    }
}

extension String {

    func digest(algorithm: HMACAlgorithm, key: String) -> String! {
        let str = self.cStringUsingEncoding(NSUTF8StringEncoding)
        let strLen = UInt(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
        let digestLen = algorithm.digestLength()
        let result = UnsafeMutablePointer<CUnsignedChar>.alloc(digestLen)
        let keyStr = key.cStringUsingEncoding(NSUTF8StringEncoding)
        let keyLen = UInt(key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))

        CCHmac(algorithm.toCCEnum(), keyStr!, keyLen, str!, strLen, result)

        var hash = NSMutableString()
        for i in 0..<digestLen {
            hash.appendFormat("%02x", result[i])
        }

        result.destroy()

        return String(hash)
    }

}

यह स्विफ्ट 3.0 के लिए संशोधित, "ओबीजे-सी ब्रिगेड हेडर के बिना स्विफ्ट प्रोजेक्ट में कॉमनक्रिप्टो आयात करने का पूर्ण स्रोत" का पूरा स्रोत है। वास्तविक कोड का काम "मिहेल ईसाव" है।

//
//  HMAC.swift
//
//  Created by Mihael Isaev on 21.04.15.
//  Copyright (c) 2014 Mihael Isaev inc. All rights reserved.
//
// ***********************************************************
//
// How to import CommonCrypto in Swift project without Obj-c briging header
//
// To work around this create a directory called CommonCrypto in the root of the project using Finder.
// In this directory create a file name module.map and copy the following into the file.
// You will need to alter the paths to ensure they point to the headers on your system.
//
// module CommonCrypto [system] {
//     header "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS.sdk/usr/include/CommonCrypto/CommonCrypto.h"
//     export *
// }
// To make this module visible to Xcode, go to Build Settings, Swift Compiler – Search Paths
// and set Import Paths to point to the directory that contains the CommonCrypto directory.
//
// You should now be able to use import CommonCrypto in your Swift code.
//
// You have to set the Import Paths in every project that uses your framework so that Xcode can find it.
//
// ***********************************************************
//
// Modification for Swift 3.0 by Sanjay Sampat on 04.Jan.2017
//
// ***********************************************************

import Foundation
import CommonCrypto

extension String {
    var md5: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.MD5)
}

var sha1: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.SHA1)
}

var sha224: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.SHA224)
}

var sha256: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.SHA256)
}

var sha384: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.SHA384)
}

var sha512: String {
    return HMAC.hash(inp: self, algo: HMACAlgo.SHA512)
}

func aesEncrypt(key:String, iv:String, options:Int = kCCOptionPKCS7Padding) -> String? {
    if let keyData = key.data(using: String.Encoding.utf8),
        let data = self.data(using: String.Encoding.utf8),
        let cryptData    = NSMutableData(length: Int((data.count)) + kCCBlockSizeAES128) {


            let keyLength              = size_t(kCCKeySizeAES128)
            let operation: CCOperation = UInt32(kCCEncrypt)
            let algoritm:  CCAlgorithm = UInt32(kCCAlgorithmAES128)
            let options:   CCOptions   = UInt32(options)



        var numBytesEncrypted :size_t = 0

        let base64cryptStringOut = keyData.withUnsafeBytes {(keyBytes: UnsafePointer<CChar>)->String? in
            return data.withUnsafeBytes {(dataBytes: UnsafePointer<CChar>)->String? in

                let cryptStatus = CCCrypt(operation,
                                          algoritm,
                                          options,
                                          keyBytes, keyLength,
                                          iv,
                                          dataBytes, data.count,
                                          cryptData.mutableBytes, cryptData.length,
                                          &numBytesEncrypted)

                if UInt32(cryptStatus) == UInt32(kCCSuccess) {
                    cryptData.length = Int(numBytesEncrypted)
                    let base64cryptString = cryptData.base64EncodedString(options: .lineLength64Characters)
                    return base64cryptString


                }
                else {
                    return nil
                }
            }
        }
        return base64cryptStringOut
    }
    return nil
}

func aesDecrypt(key:String, iv:String, options:Int = kCCOptionPKCS7Padding) -> String? {
    if let keyData = key.data(using: String.Encoding.utf8),
        let data = NSData(base64Encoded: self, options: .ignoreUnknownCharacters),
        let cryptData    = NSMutableData(length: Int((data.length)) + kCCBlockSizeAES128) {

            let keyLength              = size_t(kCCKeySizeAES128)
            let operation: CCOperation = UInt32(kCCDecrypt)
            let algoritm:  CCAlgorithm = UInt32(kCCAlgorithmAES128)
            let options:   CCOptions   = UInt32(options)

            var numBytesEncrypted :size_t = 0

        let unencryptedMessageOut = keyData.withUnsafeBytes {(keyBytes: UnsafePointer<CChar>)->String? in
            let cryptStatus = CCCrypt(operation,
                algoritm,
                options,
                keyBytes, keyLength,
                iv,
                data.bytes, data.length,
                cryptData.mutableBytes, cryptData.length,
                &numBytesEncrypted)

            if UInt32(cryptStatus) == UInt32(kCCSuccess) {
                cryptData.length = Int(numBytesEncrypted)
                let unencryptedMessage = String(data: cryptData as Data, encoding:String.Encoding.utf8)
                return unencryptedMessage
            }
            else {
                return nil
            }
        }
        return unencryptedMessageOut
    }
    return nil
}
}

public struct HMAC {

static func hash(inp: String, algo: HMACAlgo) -> String {
    if let stringData = inp.data(using: String.Encoding.utf8, allowLossyConversion: false) {
        return hexStringFromData(input: digest(input: stringData as NSData, algo: algo))
    }
    return ""
}

private static func digest(input : NSData, algo: HMACAlgo) -> NSData {
    let digestLength = algo.digestLength()
    var hash = [UInt8](repeating: 0, count: digestLength)
    switch algo {
    case .MD5:
        CC_MD5(input.bytes, UInt32(input.length), &hash)
        break
    case .SHA1:
        CC_SHA1(input.bytes, UInt32(input.length), &hash)
        break
    case .SHA224:
        CC_SHA224(input.bytes, UInt32(input.length), &hash)
        break
    case .SHA256:
        CC_SHA256(input.bytes, UInt32(input.length), &hash)
        break
    case .SHA384:
        CC_SHA384(input.bytes, UInt32(input.length), &hash)
        break
    case .SHA512:
        CC_SHA512(input.bytes, UInt32(input.length), &hash)
        break
    }
    return NSData(bytes: hash, length: digestLength)
}

private static func hexStringFromData(input: NSData) -> String {
    var bytes = [UInt8](repeating: 0, count: input.length)
    input.getBytes(&bytes, length: input.length)

    var hexString = ""
    for byte in bytes {
        hexString += String(format:"%02x", UInt8(byte))
    }

    return hexString
}

}

enum HMACAlgo {
case MD5, SHA1, SHA224, SHA256, SHA384, SHA512

func digestLength() -> Int {
    var result: CInt = 0
    switch self {
    case .MD5:
        result = CC_MD5_DIGEST_LENGTH
    case .SHA1:
        result = CC_SHA1_DIGEST_LENGTH
    case .SHA224:
        result = CC_SHA224_DIGEST_LENGTH
    case .SHA256:
        result = CC_SHA256_DIGEST_LENGTH
    case .SHA384:
        result = CC_SHA384_DIGEST_LENGTH
    case .SHA512:
        result = CC_SHA512_DIGEST_LENGTH
    }
    return Int(result)
}
}

निम्नलिखित उपयोग का उदाहरण है।

    // TEST for Encryption and Decryption through HMAC Swift 3.0
    let iv = "iv-salt-Sanjay--" // fixed 16 chars.
    let cryptoKeyString = "01234567890123456789012345678901"
    let originalString = "My Name is Sanjay Sampat, Password is [email protected]#"
    print("Original String: \(originalString)")
    if let encodedString = originalString.aesEncrypt(key: cryptoKeyString, iv: iv){
        print("String Encoded: \(encodedString)")
        if let decryptedString = encodedString.aesDecrypt(key: cryptoKeyString, iv: iv)
        {
            print("String Decoded: \(decryptedString)")
        }
        else{
            print("Decoding failed")
        }
    }
    else{
        print("Encoding failed")
    }


    // Example To create sha1 from string
    let testString = "This is string to test sha1 hash string."
    let sha1Digest = testString.sha1
    print("sha1-hash-string: \(sha1Digest)")

मुझे उम्मीद है कि यह मेरे जैसे कुछ उपयोगकर्ता के लिए एक तैयार संदर्भ हो सकता है। :)


स्विफ्ट 1.2 के बाद func digest में लाइनों को प्रतिस्थापित करें

let strLen = UInt(self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))
let keyLen = UInt(key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding))

द्वारा

let strLen = self.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)
let keyLen = key.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)

स्विफ्ट 3.1 के लिए इसे आज़माएं:

enum CryptoAlgorithm {
    case MD5, SHA1, SHA224, SHA256, SHA384, SHA512

    var HMACAlgorithm: CCHmacAlgorithm {
        var result: Int = 0
        switch self {
        case .MD5:      result = kCCHmacAlgMD5
        case .SHA1:     result = kCCHmacAlgSHA1
        case .SHA224:   result = kCCHmacAlgSHA224
        case .SHA256:   result = kCCHmacAlgSHA256
        case .SHA384:   result = kCCHmacAlgSHA384
        case .SHA512:   result = kCCHmacAlgSHA512
        }
        return CCHmacAlgorithm(result)
    }

    var digestLength: Int {
        var result: Int32 = 0
        switch self {
        case .MD5:      result = CC_MD5_DIGEST_LENGTH
        case .SHA1:     result = CC_SHA1_DIGEST_LENGTH
        case .SHA224:   result = CC_SHA224_DIGEST_LENGTH
        case .SHA256:   result = CC_SHA256_DIGEST_LENGTH
        case .SHA384:   result = CC_SHA384_DIGEST_LENGTH
        case .SHA512:   result = CC_SHA512_DIGEST_LENGTH
        }
        return Int(result)
    }
}

extension String {

    func hmac(algorithm: CryptoAlgorithm, key: String) -> String {
        let str = self.cString(using: String.Encoding.utf8)
        let strLen = Int(self.lengthOfBytes(using: String.Encoding.utf8))
        let digestLen = algorithm.digestLength
        let result = UnsafeMutablePointer<CUnsignedChar>.allocate(capacity: digestLen)
        let keyStr = key.cString(using: String.Encoding.utf8)
        let keyLen = Int(key.lengthOfBytes(using: String.Encoding.utf8))

        CCHmac(algorithm.HMACAlgorithm, keyStr!, keyLen, str!, strLen, result)

        let digest = stringFromResult(result: result, length: digestLen)

        result.deallocate(capacity: digestLen)

        return digest
    }

    private func stringFromResult(result: UnsafeMutablePointer<CUnsignedChar>, length: Int) -> String {
        let hash = NSMutableString()
        for i in 0..<length {
            hash.appendFormat("%02x", result[i])
        }
        return String(hash)
    }

}

#import <CommonCrypto/CommonHMAC.h> जोड़ें को न भूलें





commoncrypto