字符串加密问题
2006-10-10 -> xv4d0rwg_j2uvrwdx
2006-10-7 -> _akfuqlp_22vuqd
2006-10-4 -> lb0arv_wljjqrvc
2006-10-1 -> qsa0o_vzqgglo_4
2006-9-28 -> ghqjr4a2fppkh0y
2006-9-25 -> kylgoc08kmmfeat
2006-9-22 -> 0j_8xdkg0zzabfs
2006-9-19 -> 8cwmuifjaww06kn
上面这些是如何加密得到的?