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RACTF 2020 Crypto - Really Simple Algorithm

Really Simple Algorithm This is a typical RSA challenge. On netcatting the server, we get p: 692978822802216497910263439691526372004023822242590405470708610553024726 902107848499618752687457377038930308135719449550272132309308464475108356502 3419193 q: 818545152008458581431308715472370387421587511434432009344550954468777476 263587958368173933...

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RACTF 2020 Crypto - Mysterious Masquerading Message

Mysteriuos Masquerading Message We found a file that looks to be like an ssh private key... but it doesn't seem quite right. Maybe you can shed some light on it? The contents of id_rsa.txt read tbbq yhpx:) -----BEGIN OPENSSH PRIVATE KEY----- SWYgeW91IGFyZSByZWFkaW5nIHRoaXMsIHRoZW4geW91IHByb2JhYmx5IGZ pZ3VyZWQgb3V0IHRoYXQgaXQgd2Fzbid0IGFjdHVhb...

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RACTF 2020 Crypto - 06

06 It looks like someone already tried to crack this message, but they destroyed all their work. They used a naff shredder though, and we were able to recover the number 143526. BFPNU DXTEA IDDTK VDSSY NJCYC HETNS YDWVP ZWHBA FCMAN CDWOV IZJOB VTNLT NFPKM XIODY UMCJR XDPAZ QZFRB UXZLZ ZTLVD JJVAK EYMRT YTMHW XAMPX TWEKC WNSYH REYBG AZFRQ SMJNN ...

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RACTF 2020 Crypto - 05

05 DPKFC LISLA KWMDW ERUKW XPDID BRADA TRTMO LKKGN YUEIE LDEOC VRTUM FLCVG RBSVS DTHDK WMHOG TAECO MWEYM ITWOS SEFKF BEAWK SAEOK SRSNZ RNEOR LTHIS DWZCO RQSRA MYVSI RIRGE CZIDR MMVCR HGBYE WSLSO CWMBU LGKDA DELQU BWKLF CMWGQ RYSPA EZBDA PIRGW SQSFA CLUMA RVERU ILKBA ATNOF CKWWA TCKKI IUSWD EIAPK SWSGO HCFYM SDODS MUORA TDEKU NRRSG NETHD WPHRG A...

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