Video: Dab tsi yog cov cim hauv tus password?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
a tus password yuav tsum yog yim cov cim suav nrog ib tsab ntawv loj, ib qho tshwj xeeb tus cwj pwm andalphanumeric cov cim . Thiab ntawm no yog kuv validationexpression uas yog rau yim cov cim suav nrog ib tsab ntawv sau npe, ib tsab ntawv me, thiab ib tus lej lossis tshwj xeeb tus cwj pwm.
Ua ke, cov cim txhais li cas hauv tus password?
1) Koj tus password yuav tsum nyob nruab nrab ntawm 8 thiab 30 cov cim . 2) Koj tus password yuav tsum muaj tsawg kawg yog ib tsab ntawv loj, lossis lub peev, tsab ntawv (ex: A, B, thiab lwm yam) 3) Koj tus password yuav tsum muaj tsawg kawg yog ib tsab ntawv me. 4) Koj tus password yuav tsum muaj tsawg kawg ib tus lej (piv txwv li: 0, 1, 2, 3, thiab lwm yam)
Ib sab saum toj, dab tsi yog tus lej cim rau tus password? A tus password muaj 4 cov cim , txhua tus uas yog a tus lej los yog ib tsab ntawv ntawm cov tsiaj ntawv. Txhua tus password yuav tsum muaj tsawg kawg yog ib qho tus lej thiab TSEEM CEEB tsab ntawv.
Ib yam li ntawd, koj tuaj yeem nug, 8 tus cim hauv tus password piv txwv yog dab tsi?
Tus password yuav tsum yog yim cov cim longand muaj tsawg kawg yog ib tsab ntawv me, ib tsab ntawv loj, ib tus lej, thiab ib qho tshwj xeeb tus cwj pwm ” Yog li nws tsis tuaj yeem koom lossis luv dua 8 npe , tab sis yuav tsum yog raws nraim 8 npe.
Dab tsi yog 5 tus cim hauv tus password?
5 ) Koj tus password yuav tsum muaj tsawg kawg yog ib qho tshwj xeeb tus cwj pwm -piv txwv li: $, #, @, !, %, ^, &, *, (,) -mas tshwj xeeb cov cim nyob rau ntawm kab saum toj kawg nkaus ntawm cov keyboard ntawm tib kab li cov lej 0 txog 9.
Pom zoo:
Dab tsi ntawm algorithms xav kom tus neeg xa khoom thiab tus neeg txais kev sib pauv hloov tus yuam sij zais cia uas siv los xyuas kom meej qhov tsis pub lwm tus paub ntawm cov lus?
Dab tsi ntawm algorithms xav kom tus neeg xa khoom thiab tus neeg txais kev sib pauv pauv tus yuam sij zais cia uas siv los xyuas kom tsis pub leej twg paub cov lus? Kev piav qhia: Symmetrical algorithms siv tib tus yuam sij, tus yuam sij zais cia, los encrypt thiab decrypt cov ntaub ntawv. Tus yuam sij no yuav tsum tau muab qhia ua ntej ua ntej kev sib txuas lus tuaj yeem tshwm sim
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