Someone or something stuck a random flyer on your space ship that reads:
cslcehesehft ohrumvc zmvm scmk ht ptohmte ehbmc mxmt eufsju eumq pvm dshem mpchgq lvfymt zheu nsce p rmtohg ptk rprmv, fv bfvm vmomtegq lq ofbbft ofbrsemvhwmk effgc. qfsv ymq hc: zumt_kf_zm_jme_ef_eum_upvk_cesii
Ta giải mã được thành:
| substitution ciphers were used in ancient times even though they are quite easily broken with just a pencil and paper, or more recently by common computerized tools. your key is: when_do_we_get_to_the_hard_stuff |

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