ãã©ã¡ã¼ã¿ cipher MCRYPT_æå·å 宿°ã®ããããã ãããã¯ã¢ã«ã´ãªãºã åãããããæååã key ãã¼ã¿ãæå·åããéã®ãã¼ã æå®ããæå·åæ¹å¼ã«å¯¾å¿ãã¦ããªããµã¤ãºã®ãã¼ã渡ãããå ´åã¯ã è¦åãçºã㦠false ãè¿ãã¾ãã data æå®ãã cipher ããã³ mode ã§æå·åãããã¼ã¿ã ãã¼ã¿ã®å¤§ããã n * blocksize ã§ãªãå ´åããã¼ã¿ã¯ã '\0'ã§åãããã¾ãã è¿ãããæå·åãããããã¹ãã¯ãdata ã§æå®ãããã¼ã¿ã®å¤§ããããã大ãããªãå¯è½æ§ãããã¾ãã mode 宿° MCRYPT_MODE_ã¢ã¼ãåããããã¯æåå "ecb", "cbc", "cfb", "ofb", "nofb" ,"stream" ã®ããããã iv CBC, CFB, OFB ã¢ã¼ãããã³ STREAM ã¢ã¼ãã®ããã¤ãã®ã¢ã«ã´ãªãºã ã®åæåã®éã«


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