Source

JBSCrypto / JBSCrypto / main.m

//  The MIT License (MIT)
//  Copyright (c) 2012 James Sumners
//
//  Permission is hereby granted, free of charge, to any person obtaining a copy
//  of this software and associated documentation files (the "Software"), to
//  deal in the Software without restriction, including without limitation the
//  rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
//  sell copies of the Software, and to permit persons to whom the Software is
//  furnished to do so, subject to the following conditions:
//
//  The above copyright notice and this permission notice shall be included in
//  all copies or substantial portions of the Software.
//
//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
//  IN THE SOFTWARE.

#import <Foundation/Foundation.h>
#import "JBSCrypto.h"

int main(int argc, const char * argv[])
{
  
  @autoreleasepool {
    // echo "This is a test string." | tr -d '\n' | openssl dgst -sha256
    // 3eec256a587cccf72f71d2342b6dfab0bbca01697c7e7014540bdd62b72120da
    NSString *stringToEncode = @"This is a test string.";
    NSString *encodedString = [JBSCrypto 
                               generateKeyFromData:
                               [stringToEncode 
                                dataUsingEncoding:NSASCIIStringEncoding]];
    
    NSLog(@"Key = %@", encodedString);
    
    encodedString = [JBSCrypto
                     generateKeyFromString:stringToEncode
                     withEncoding:NSASCIIStringEncoding];
    
    NSLog(@"Key = %@", encodedString);
    NSLog(@"Random hash = %@", [JBSCrypto generateKey]);
    
    
    // Test encrypting and decrypting.
    NSURL *url = [NSURL
                  URLWithString:@"http://textfiles.com/computers/apple.txt"];
    NSData *dataToEncrypt = [NSData dataWithContentsOfURL:url];
    NSData *encryptedData = [JBSCrypto
                             encryptData:dataToEncrypt
                             withKey:encodedString];
    NSData *decryptedData = [JBSCrypto
                             decryptData:encryptedData
                             withKey:encodedString];
    
    if ([decryptedData isEqualToData:dataToEncrypt]) {
      NSLog(@"Encryption and decryption works.");
    } else {
      NSLog(@"Encryption and decryption failed!");
    }
  }
  return 0;
}
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