esp_serial.ino example not working

[fforoutan]

Hi, I ran esp_serial.ino example on ESP8266 and the answers I got are not the same as any online crypto site. I also tested for all padding methods byte aes_key[] = {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11}; byte aes_iv[N_BLOCK] = {0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11};

21:03:03.849 -> Enter text to be encrypted into console (no feedback) and press ENTER (newline): 21:04:57.590 -> paddingmode: Array 21:04:57.624 -> INPUT:Hello 21:04:57.624 -> encrypted = PxoUZhjnrrKf0TpojMznbA== 21:04:59.599 -> Cleartext: Hello 21:04:59.599 -> SUCCES 21:05:06.957 -> paddingmode: Bit 21:05:06.990 -> INPUT:Hello 21:05:06.990 -> encrypted = QfUDJwWV++xsWxjaJr1bHw== 21:05:08.979 -> Cleartext: Hello 21:05:08.979 -> SUCCES 21:05:12.646 -> paddingmode: ZeroLength 21:05:12.679 -> INPUT:Hello 21:05:12.679 -> encrypted = yxWbv1IPjTL6GXSQa/U+jA== 21:05:14.666 -> Cleartext: Hello 21:05:14.666 -> SUCCES 21:05:17.553 -> paddingmode: Null 21:05:17.553 -> INPUT:Hello 21:05:17.553 -> encrypted = c7AK1VFsj8Jbr4K1BTPtIA== 21:05:19.573 -> Cleartext: Hello 21:05:19.573 -> SUCCES 21:05:24.443 -> paddingmode: Space 21:05:24.443 -> INPUT:Hello 21:05:24.443 -> encrypted = T0hB9dIoecWdfF3DvIuoEw== 21:05:26.458 -> Cleartext: Hello 21:05:26.458 -> SUCCES 21:05:28.599 -> paddingmode: CMS 21:05:28.599 -> INPUT:Hello 21:05:28.599 -> encrypted = xXKlsa0C9Ncrc1BhURySng== 21:05:30.615 -> Cleartext: Hello 21:05:30.615 -> SUCCES

non of encrypted results is valid in any online crypto. what is the problem?

[suculent]

Are you resetting aes_iv in each loop or do you keep it iterate?

The CMS (=0) paddingmode is reportedly compatible / tested with https://cryptii.com

Also, the esp_serial.ino uses encrypt64 and decrypt64 with additional layer of base64 encoding, which probably is not what you want.

[suculent]

I've tried this against https://cryptii.com with successful result. You're probably missing the last base64 decoding step.

[suculent]

@fforoutan Your case, first result:

Closing.