Swift sha1 md5加密

AES/RSA/MD2/MD5/SHA1/SHA128/SHA384/SHA512 in Swift 

可以参考github: https://github.com/adow/SecrecySwift

https://github.com/SwiftP2P/SwiftSSL

swift实现sha1加密算法，需要现在beidge-header文件中添加下述语句

// sha1
#import <CommonCrypto/CommonHMAC.h>

　　

sha1：

import UIKit

extension String{
    func sha1() -> String{
        let data = self.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)!
        var digest = [UInt8](count:Int(CC_SHA1_DIGEST_LENGTH),repeatedValue:0)
        CC_SHA1(data.bytes, CC_LONG(data.length), &digest)
        
        let output = NSMutableString(capacity: Int(CC_SHA1_DIGEST_LENGTH))
        for byte in digest{
            output.appendFormat("%02x", byte)
        }
        return output as String
    }
}

　　

MD5：(对比一下sha1的方法，改动不大，其他几种也应该差不多)

extension String{
    func md5() -> String{
        let data = self.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)!
        var digest = [UInt8](count:Int(CC_MD5_DIGEST_LENGTH),repeatedValue:0)
        CC_MD5(data.bytes, CC_LONG(data.length), &digest)
        
        let output = NSMutableString(capacity: Int(CC_MD5_DIGEST_LENGTH))
        for byte in digest{
            output.appendFormat("%02x", byte)
        }
        return output as String
    }
}

　　

hmac加密:

// MARK: - HMAC加密 需要秘钥
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 {
        let hash = NSMutableString()
        for i in 0..<length {
            hash.appendFormat("%02x", result[i])
        }
        return String(hash)
    }
}