NSData+AESCrypt库

ios下面的AES加解密库 @interface NSData (AESCrypt) - (NSData *)AES256EncryptWithKey:(NSString *)key; - (NSData *)AES256DecryptWithKey:(NSString *)key; + (NSData *)dataWithBase64EncodedString:(NSString *)string; - (id)initWithBase64EncodedString:(NSString *)string; - (NSString *)base64Encoding; - (NSString *)base64EncodingWithLineLength:(NSUInteger)lineLength; - (BOOL)hasPrefixBytes:(const void *)prefix length:(NSUInteger)length; - (BOOL)hasSuffixBytes:(const void *)suffix length:(NSUInteger)length; @end