text Sha256Encryptor

Posted 2021-05-02

struct Encryption {
    static func sha256Hex(string: String) -> String? {
        guard let messageData = string.data(using: String.Encoding.utf8) else { return nil }
        var digestData = Data(count: Int(CC_SHA256_DIGEST_LENGTH))
        
        _ = digestData.withUnsafeMutableBytes {digestBytes in
            messageData.withUnsafeBytes {messageBytes in
                CC_SHA256(messageBytes, CC_LONG(messageData.count), digestBytes)
            }
        }
        
        return digestData.map { String(format: "%02hhx", $0) }.joined()
    }
    
    static func ccSha256(data: Data) -> Data {
        var digest = Data(count: Int(CC_SHA256_DIGEST_LENGTH))
        
        _ = digest.withUnsafeMutableBytes { (digestBytes) in
            data.withUnsafeBytes { (stringBytes) in
                CC_SHA256(stringBytes, CC_LONG(data.count), digestBytes)
            }
        }
        return digest
    }
}