NSString *const IV = @"AEE0515D0B08A4E4";
NSString *const KEY = @"9336565521E5F082BB5929E8E033BC69";
#import "SecurityUtils.h"
@implementation SecurityUtils
+ (NSString *)encrypt:(NSString *)plainText error:(NSError **)error { NSMutableData *result = [SecurityUtils doAES:[plainText dataUsingEncoding:NSUTF8StringEncoding] context: kCCEncrypt error:error]; return [result base64EncodedStringWithOptions:0];
}
+ (NSString *)decrypt:(NSString *)encryptedBase64String error:(NSError **)error { NSData *dataToDecrypt = [[NSData alloc] initWithBase64EncodedString:encryptedBase64String options:0]; NSMutableData *result = [SecurityUtils doAES:dataToDecrypt context: kCCDecrypt error:error]; return [[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding];
}
+ (NSMutableData *)doAES:(NSData *)dataIn context:(CCOperation)kCCEncrypt_or_kCCDecrypt error:(NSError **)error { CCCryptorStatus ccStatus = kCCSuccess; size_t cryptBytes = 0; NSMutableData *dataOut = [NSMutableData dataWithLength:dataIn.length + kCCBlockSizeBlowfish]; NSData *key =[KEY dataUsingEncoding:NSUTF8StringEncoding]; NSData *iv = [IV dataUsingEncoding:NSUTF8StringEncoding]; ccStatus = CCCrypt( kCCEncrypt_or_kCCDecrypt, kCCAlgorithmAES, kCCOptionPKCS7Padding, key.bytes, key.length, (iv)?nil:iv.bytes, dataIn.bytes, dataIn.length, dataOut.mutableBytes, dataOut.length, &cryptBytes); if (ccStatus == kCCSuccess) { dataOut.length = cryptBytes; } else { if (error) { *error = [NSError errorWithDomain:@"kEncryptionError" code:ccStatus userInfo:nil]; } dataOut = nil; } return dataOut;
}
@end