How do I encrypt data at rest and in transit?

Encrypting data at rest and in transit is crucial for protecting sensitive information in your applications. This can be achieved using various encryption techniques to ensure that data remains secure whether stored on disk or being transmitted across networks.

Data at Rest

Data at rest refers to inactive data stored physically in any digital form (such as databases and file systems). To encrypt data at rest, you can use encryption algorithms like AES (Advanced Encryption Standard).

Here’s an example of encrypting data at rest in Swift:

// Example of encrypting data at rest in Swift import Foundation import CommonCrypto func encryptData(key: Data, data: Data) -> Data? { let keyLength = size_t(kCCKeySizeAES256) let dataLength = data.count var buffer = Data(count: dataLength + kCCBlockSizeAES128) var numBytesEncrypted: size_t = 0 let cryptStatus = buffer.withUnsafeMutableBytes { bufferBytes in data.withUnsafeBytes { dataBytes in key.withUnsafeBytes { keyBytes in CCCrypt(CCOperation(kCCEncrypt), CCAlgorithm(kCCAlgorithmAES), CCOptions(kCCOptionPKCS7Padding), keyBytes.baseAddress, keyLength, nil, dataBytes.baseAddress, dataLength, bufferBytes.baseAddress, buffer.count, &numBytesEncrypted) } } } if cryptStatus == kCCSuccess { buffer.removeSubrange(numBytesEncrypted..

Data in Transit

Data in transit is data actively moving from one location to another, such as across the internet. To protect this type of data, you should implement HTTPS (HTTP Secure) which uses TLS (Transport Layer Security).

To make an HTTPS request in Swift, you can use the URLSession method like this:

// Example of making a secure HTTPS request in Swift import Foundation let url = URL(string: "https://api.example.com/resource")! var request = URLRequest(url: url) request.httpMethod = "GET" let task = URLSession.shared.dataTask(with: request) { data, response, error in if let error = error { print("Error: \(error)") return } if let data = data { print("Response data: \(data)") } } task.resume()

Data Encryption Data at Rest Data in Transit AES HTTPS HTTPS Requests Swift Encryption

Related Questions

How do I avoid rehashing overhead with std::set in multithreaded code?

How do I find elements with custom comparators with std::set for embedded targets?

How do I erase elements while iterating with std::set for embedded targets?

How do I provide stable iteration order with std::unordered_map for large datasets?

How do I reserve capacity ahead of time with std::unordered_map for large datasets?

How do I erase elements while iterating with std::unordered_map in multithreaded code?

How do I provide stable iteration order with std::map for embedded targets?

How do I provide stable iteration order with std::map in multithreaded code?

How do I avoid rehashing overhead with std::map in performance-sensitive code?

How do I merge two containers efficiently with std::map for embedded targets?