String+MD5.swift

String+MD5.swift

//
//  String+MD5.swift
//  Created by: Jader Feijo
//

import Foundation

extension String {
	var md5: String {
		var digest = [UInt8](repeating: 0, count: Int(CC_MD5_DIGEST_LENGTH))
		if let data = self.data(using: String.Encoding.utf8) {
			CC_MD5((data as NSData).bytes, CC_LONG(data.count), &digest)
		}

		var digestHex = ""
		for index in 0..<Int(CC_MD5_DIGEST_LENGTH) {
			digestHex += String(format: "%02x", digest[index])
		}

		return digestHex
	}
}

StringMD5Tests.swift

//
//  StringMD5Tests.swift
//  Created by: Jader Feijo
//

import XCTest

class StringMD5Tests: XCTestCase {
    func testMD5() {
		XCTAssertEqual("".md5, "d41d8cd98f00b204e9800998ecf8427e")
		XCTAssertEqual("test".md5, "098f6bcd4621d373cade4e832627b4f6")
		XCTAssertEqual("just to be sure".md5, "9b22815faccfedd0ba143fb8c774335a")
    }
}