Big endian support

[tnakaike]

This commits add the big endian support for conversion between bytes and a typed value such as Int.

[Joannis]

I don't assume there's any way to unit test this, right?

[tnakaike]

Yes. I cannot prepare the test environment on s390x for you now. I tested all of the unit tests on my machine. All of the tests passed. Let me put the test results.

[tnakaike]

Test results on a s390x machine. Let me screen some performance numbers.

Test Suite 'All tests' started at 2018-04-04 03:54:53.436
Test Suite 'debug.xctest' started at 2018-04-04 03:54:53.437
Test Suite 'MD5Tests' started at 2018-04-04 03:54:53.437
Test Case 'MD5Tests.testBasic' started at 2018-04-04 03:54:53.437
Test Case 'MD5Tests.testBasic' passed (0.001 seconds)
Test Case 'MD5Tests.testPerformance' started at 2018-04-04 03:54:53.438
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/MD5Tests.swift:33: Test Case 'MD5Tests.testPerformance' measured [Time, seconds] average: 8.102, relative standard deviation: 0.231%, values: [8.114241, 8.136363, 8.107532, 8.089877, 8.113880, 8.074640, 8.114601, 8.098041, 8.093881, 8.079154], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'MD5Tests.testPerformance' passed (xx.xx seconds)
Test Case 'MD5Tests.testHMAC' started at 2018-04-04 03:56:14.469
Test Case 'MD5Tests.testHMAC' passed (0.001 seconds)
Test Suite 'MD5Tests' passed at 2018-04-04 03:56:14.469
	 Executed 3 tests, with 0 failures (0 unexpected) in 81.032 (xx.xx) seconds
Test Suite 'PBKDF2Tests' started at 2018-04-04 03:56:14.469
Test Case 'PBKDF2Tests.testSHA1' started at 2018-04-04 03:56:14.469
Test Case 'PBKDF2Tests.testSHA1' passed (1.185 seconds)
Test Case 'PBKDF2Tests.testMD5' started at 2018-04-04 03:56:15.655
Test Case 'PBKDF2Tests.testMD5' passed (0.912 seconds)
Test Case 'PBKDF2Tests.testPerformance' started at 2018-04-04 03:56:16.567
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/PBKDF2Tests.swift:45: Test Case 'PBKDF2Tests.testPerformance' measured [Time, seconds] average: 2.961, relative standard deviation: 0.226%, values: [2.973824, 2.964172, 2.966976, 2.957078, 2.958683, 2.949858, 2.957785, 2.965533, 2.962839, 2.957149], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'PBKDF2Tests.testPerformance' passed (xx.xx seconds)
Test Suite 'PBKDF2Tests' passed at 2018-04-04 03:56:46.181
	 Executed 3 tests, with 0 failures (0 unexpected) in 31.711 (xx.xx) seconds
Test Suite 'SHA1Tests' started at 2018-04-04 03:56:46.181
Test Case 'SHA1Tests.testBasic' started at 2018-04-04 03:56:46.181
Test Case 'SHA1Tests.testBasic' passed (0.001 seconds)
Test Case 'SHA1Tests.testPerformance' started at 2018-04-04 03:56:46.182
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/SHA1Tests.swift:51: Test Case 'SHA1Tests.testPerformance' measured [Time, seconds] average: 0.000, relative standard deviation: 1.202%, values: [0.000081, 0.000079, 0.000079, 0.000078, 0.000078, 0.000078, 0.000078, 0.000078, 0.000078, 0.000078], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'SHA1Tests.testPerformance' passed (0.001 seconds)
Test Case 'SHA1Tests.testHMAC' started at 2018-04-04 03:56:46.183
Test Case 'SHA1Tests.testHMAC' passed (0.001 seconds)
Test Suite 'SHA1Tests' passed at 2018-04-04 03:56:46.184
	 Executed 3 tests, with 0 failures (0 unexpected) in 0.003 (0.003) seconds
Test Suite 'SHA2Tests' started at 2018-04-04 03:56:46.184
Test Case 'SHA2Tests.testSHA224Basic' started at 2018-04-04 03:56:46.184
Test Case 'SHA2Tests.testSHA224Basic' passed (0.0 seconds)
Test Case 'SHA2Tests.testSHA256Basic' started at 2018-04-04 03:56:46.184
Test Case 'SHA2Tests.testSHA256Basic' passed (0.0 seconds)
Test Case 'SHA2Tests.testSHA384Basic' started at 2018-04-04 03:56:46.185
Test Case 'SHA2Tests.testSHA384Basic' passed (0.001 seconds)
Test Case 'SHA2Tests.testSHA512Basic' started at 2018-04-04 03:56:46.185
Test Case 'SHA2Tests.testSHA512Basic' passed (0.001 seconds)
Test Case 'SHA2Tests.testSHA224Performance' started at 2018-04-04 03:56:46.186
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/SHA2Tests.swift:105: Test Case 'SHA2Tests.testSHA224Performance' measured [Time, seconds] average: 0.000, relative standard deviation: 2.222%, values: [0.000109, 0.000111, 0.000106, 0.000105, 0.000104, 0.000105, 0.000105, 0.000105, 0.000105, 0.000105], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'SHA2Tests.testSHA224Performance' passed (0.001 seconds)
Test Case 'SHA2Tests.testSHA256Performance' started at 2018-04-04 03:56:46.187
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/SHA2Tests.swift:111: Test Case 'SHA2Tests.testSHA256Performance' measured [Time, seconds] average: 0.000, relative standard deviation: 1.187%, values: [0.000104, 0.000101, 0.000100, 0.000100, 0.000100, 0.000100, 0.000100, 0.000100, 0.000100, 0.000100], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'SHA2Tests.testSHA256Performance' passed (0.001 seconds)
Test Case 'SHA2Tests.testSHA384Performance' started at 2018-04-04 03:56:46.188
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/SHA2Tests.swift:117: Test Case 'SHA2Tests.testSHA384Performance' measured [Time, seconds] average: 0.000, relative standard deviation: 1.394%, values: [0.000124, 0.000121, 0.000120, 0.000121, 0.000121, 0.000121, 0.000125, 0.000120, 0.000120, 0.000120], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'SHA2Tests.testSHA384Performance' passed (0.001 seconds)
Test Case 'SHA2Tests.testSHA512Performance' started at 2018-04-04 03:56:46.189
/home/nakaike/git/CryptoKitten/Tests/CryptoKittenTests/SHA2Tests.swift:123: Test Case 'SHA2Tests.testSHA512Performance' measured [Time, seconds] average: 0.000, relative standard deviation: 1.021%, values: [0.000128, 0.000125, 0.000124, 0.000124, 0.000124, 0.000124, 0.000124, 0.000124, 0.000124, 0.000124], performanceMetricID:org.swift.XCTPerformanceMetric_WallClockTime, maxPercentRelativeStandardDeviation: 10.000%, maxStandardDeviation: 0.100
Test Case 'SHA2Tests.testSHA512Performance' passed (0.001 seconds)
Test Suite 'SHA2Tests' passed at 2018-04-04 03:56:46.191
	 Executed 8 tests, with 0 failures (0 unexpected) in 0.007 (0.007) seconds
Test Suite 'debug.xctest' passed at 2018-04-04 03:56:46.191
	 Executed 17 tests, with 0 failures (0 unexpected) in xx.xx (xx.xx) seconds
Test Suite 'All tests' passed at 2018-04-04 03:56:46.191
	 Executed 17 tests, with 0 failures (0 unexpected) in xx.xx (xx.xx) seconds

[Joannis]

@tnakaike Robbert lost contact with you a while ago. Do you still need Big Endian support?

[tnakaike]

@Joannis Yes. I hope that MongoKitten supports big endian.

I responded to him in Slack. He cannot access slack now?

[Joannis]

He's on vacation at the moment for another week. I can pick up the issues, too. Last thing I recall hearing about Big Endian support was his inabiliy to verify this. He wasn't able to get a big endian machine setup at the IBM cloud services.

[tnakaike]

I did not know it. Did he tried this https://developer.ibm.com/linuxone/ ?

Let me check if it works.