在iPhone中获取MD_5哈希文件

import CryptoSwift

let data = "Hello, world!".data(using: .utf8)!
let md5 = data.md5()
print(md5.toHexString())

import CommonCrypto

func md5(data: Data) -> Data {
    var digest = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
    _ = data.withUnsafeBytes { (bytes: UnsafeRawBufferPointer) in
        CC_MD5(bytes.baseAddress, CC_LONG(data.count), &digest)
    }
    return Data(digest)
}

let data = "Hello, world!".data(using: .utf8)!
let md5 = md5(data: data)
print(md5.map { String(format: "%02hhx", $0) }.joined())