December 29, 2006
Decryption puzzle challenge
Posted by bopuc at December 29, 2006 06:46 AM
I need help cracking an encryption mechanism. Here's what and why:
21 example encoded strings: (each on own line)
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U1ZDIwOThjNTVhYjY4MzNjODg3YzAyY2M4ZTg0MTg1MjQ1NTdhMDRmY2FjYjQ0NmY0
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhNmU1ZGUwYjhjMDRlZjQyM2NkODg3OWYzOGNjZTI2YWRhN2QwMzE2MDRlNmVmYTkwNQ==
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UzZGQwYThjMTZmMjRjMzhkMzhjZDcwNWNhZjQ1MDhkM2Y2NDE3MGZmZmIwZWExOGFhYjVhMw==
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UxZGEwODhjMzVhZjE4NmM4NWQxODA2ZmNiYmYwNWRhMmU1ZTE1MDRhY2I2ZTEwNmYzYTBmMTAwOWEwY2E4NzY1YWJiYzQzM2I3ZjM5Zjk3ODljMDUwZWY2ZWQ1MTk4ZmJhZDhhMWE4ODg0Yjg2OWQ0YWRiMmQ=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2VkZDgwZThjNTVhNTcyMzJkMjg1ZjQzNWRmYzU1OThkMzI2NDEzMDhmYmJiZWQxOGFhYjVhMw==
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UyZDgwZThjNTRhYTdlMzRjODkxZWQzYmYyZWI1NDgyMzg2NDQ4NWNhNmYxODY1YmE2YWJlMzM5ZGEwMmI5MmE1YzgyOTIzZWI3OWFjNDgwZDBlMTI1
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UxZGIwZDhjMzFmNTQ0MDJlZjhhZGIzNGRlZDkxOGIzMDU1NDUxNTVhMWVjYmU2OTg2YjFjZjI3YzEwMTk0NzEwZWVkOTczZWE4Yzc4Mzlk
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UxZDIwZDhjMmZlODUyMjlkNThjZTYzM2MwZTQ1MDllMjc1YTRlNThlNWNmYTA3YWE4YjNmNTAyYzQxZGE3Mjk0YWI4Y2E2MmZlZjVjYTljOGRhNTI0OTM0NmZjNDc=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U2ZGUwZjhjMTFlYjdlMzJkMmJkYzYzMmM4ZDk0NzhkMmY1MjRhMTBiZmUzYWE1ZTk4YjFmODAzZjIwOWFhM2Y=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U0ZGUwZDhjMmZmYzRjMzhjZmJkZjAyOGMyZjE1YmMxMDc1MjUzNTRhNmU1ODY3ZmE5OWFkMTBiYzgxZmEyMjU1OTgyOTUzOGI3OWVjNjgwZDBlMTI1
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UxZGEwYjhjMGZlODUyMjlkNThjZWQyZWM0ZWI1Nzg5Mzk1NzQ0NTZhZGFmYmQ1N2FhYWJjZjAxYzQxZmE3MTk1ZWE5Zjg3Y2VmYzY5ZmM3ZGNmYw==
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U0ZGUwYzhjMGNmMzQ1MzhjNGJkODY2OTljZDkwMGRmN2YwZTE0MTNhNWYyZWE=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhMGVjZDMwOThjMzFmNTRlMzA5OWQwODc2ODlkZGY1YTllMjA1ZTdhNjlhMGU3ZmMwNGYyZjdhMDI1YzEwMmE4MmQ2N2VjOTIzZmIxOWFkZGMzY2RhMg==
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U0ZDgwYjhjMGFmMDQ1MDJkYjg3ZWQ2ZTk1YmYwZGQ5NjU1NjU1MGU=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2UxZDgwMjhjNTVhYjdlMTdkZDhmZDcyOWYyYzQ0NzgzM2M1NTdhMTA5N2QyYjg0NmE2YjZjZjIxYzIxOTk0MDc2NzlmZDU2YWU4Y2VhY2UwZDhlNjQ5ZmY0YWViMmJlZmI2YjJhYWFiOTcxMWNmODA=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U1ZDIwYzhjMzVhZjQ3NmI4YTgzZDczYjk4ZTI1N2Q4MjgwODE0MDhmZGUxZWI1NWE1ZjBhNTA1OWM1Y2FkNzA1Y2U0OTIzYmI0ZjM5Zjk3ODljMDUwZWY2ZWQ1MTk4YmJiZDhhYWFiODk0NDg3OWQ0YWRiMmQ=
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U3ZGMwYjhjNTVhOTA0NmY4OWQwODI3ZjlmYjMwN2RjMDQ0ZDQwNGZlZGIwZWMwNGY3ODRmZTAyODg1ZmZlNzQwODkyZDE2ZWY0ZjVjNzlkOGFhMTM4ZDA1YmJm
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U2ZDkwZThjMGZmYzRjMzhjZmJkZDAyOGMyZjE1YmIzM2Y1MzQwNjJiOGUzYTA1NGE2YTZmYjM5OWM1Y2ZjNzMwMWYzY2E3YmI1
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2VjZGMwMjhjMjZmMjRkMzlkZjk3YzYyY2RlY2M1NDgxMmU0ODY3NGZhN2Y1Yjc2MmFmYTBjMDA3ZDQwZmFhMjU1MzkwY2U3M2Q5OTJjMjlkODlhODM4ZDA1YmJm
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhMGVjZDMwODhjMzZmNDRkMmJkOTkwYzEyZmMzYTMwN2Q5NzkwYjc1NTRhYmU5YWM0NmI0OWFkNjEzZDkxOGI5MjMxZGVmOTIzOWI2ZWM5Y2NiOThhMzIzOGYxYmRmMTdiOGVjZTZlMGYwZDYwZmUwOGExMDllMjczNjA2OTA4MWYz
N2NjZGZkYTJkMjc0ZTZmNGY3OTVmNjk3Nzg4ZDEyZTU5ZDg1MzhiMGVkYzYzMzAwMzAzYmU1NGI1NjY4YzVkMjZlNjM0ZjQwN2YyYzA0ZDFhMzI4ODJhN2U0ZGIwODhjMzNmNDQ1MzhkMzk2ZDMyYWM4Yzc1NjgzM2U0ODUxNTRhYmRkZTgwMWYyZjRhNTQ4YzAxZGY4
What they are:
They are HTTP URIs to mp3 files out on the net.
Why:
No bones about it, I want to hack a music tracking site and pull down tunes as they are posted. Help me crack and I'll share it with ya. ;)
Observations:
Notice how almost the entire first half of all the above strings are identical, with only minor variations in the 2-3 following characters. My first assumption was that this is the "http://"... but that wouldn't make sense unless the protocol is encrypted separatly from the domain and the file. For all we know, each char in the URI may be encoded separatly using a combination of methods...
So yeah, I don't have high hopes for this but it would be awesome; these are URLs for a seriously awesome source of the truly best music out on the net.