@interface DESecurityUtils : NSObject + (id)getKeyFromData:(id)a0; + (id)getRandomIV; + (id)getRandomKey; + (id)randomDataOfLength:(unsigned long long)a0; + (id)sign:(id)a0 privateKey:(id)a1; + (BOOL)verify:(id)a0 expected:(id)a1 publicKey:(id)a2; @end