Es ist wahrscheinlich irgendwelche Schwächen wird ausgesetzt, was auch immer Sie tun, um zu versuchen, um Sie zu verbergen. Es ist wohl noch nützlich werden geöffnet, wenn Sie sich entwickeln - zumindest werden Sie nicht leiden, eine zero-day-exploit. Wenn eine Transaktion musste rückgängig gemacht werden, es kann nicht sein. Was notwendig ist, wird eine neue Transaktion Ausgaben das Gleichgewicht der betrügerischen Transaktion utxo ist auf eine neue Adresse, die erfordert den privaten Schlüssel für die in betrügerischer Weise erlangt utxo ist Zeichen für die Transaktion. Nur fangen die Gauner und die ihn zwingen, zurück zu zahlen gestohlene Bitcoins funktionieren wird. Bearbeitet die Antwort für Klarheit. Ich bin mit einem pool, nicht solo mining. ich glaube, dass ist der Grund, warum wir haben checkpoints in den Quellcode, so dass ein Benutzer, der IBD möglicherweise nicht leicht getäuscht werden, um zu überprüfen, ob eine alt-Kette mit der gleichen Menge an Arbeit, während die block-Geschichte war noch in niedrig-diff. Im relativ-höher diff blockiert, dies ist ein nicht-Problem, da seine nicht-trivial zu fälschen, diese Blöcke

geben Sie eine Zahl H(studentID||Bi) wobei Bi die I-te block-header in der Bitcoin-blockchain.Würde die Regelung werden mich sicherer, wenn Sie stattdessen H(studentID||Bi-1|| Bi)?

Für diese Zwecke dieser Frage, die bitcoin-header-Bi = H(Bi-1 || andere Sachen). Unter einem black-box-Annahme von H()'s Verhalten, die beiden Systeme sind praktisch gleichwertig.

Man kann nicht wirklich behaupten, dass H(id || Bi-1 || H(bi-1||Sachen)) ist sicherer als H(id || H(Bi-1||Sachen)) auf der Grundlage von 'mehr Daten', weil H() könnte auch ein interner Engpass E. g. es könnte umgesetzt werden, H(bytes[0 .. n]) = H(H(...H(H(H(bytes[0])||Byte[1])||Byte[2])...||bytes[n]) (und, in der Tat, sha256 funktioniert eine Art wie diese, obwohl nicht ein byte auf einmal).

Ohne eine formale definition von "Sicherheit" ich glaube nicht, dass es möglich einfach nur die Frage beantworten. Aber raten auf eine Bedeutung ", könnte jemand mehr leicht zu manipulieren, Ihre Bürozeiten unter eine statt der anderen" - die Antwort wäre keine.

buy cialis buy cialis online buy cialis online without script canadian cialis online pharmacy cheap cialis cheap cialis generic cialis cialis 20 mg best price cialis before and after cialis canada cialis canada pharmacy online cialis cost cialis coupon cialis coupons cialis dosage cialis for daily use cialis free trial cialis generic cialis generic release date cialis online cialis online pharmacy cialis over the counter cialis over the counter at walmart cialis side effects cialis vs viagra cialis without a doctor's prescription generic cialis generic cialis at walmart generic cialis canada pharmacy generic cialis tadalafil side effects of cialis tadalafil tadalafil 20 mg tadalafil 20mg tadalafil 5mg tadalafil generic tadalafil generic at walgreens tadalafil side effects viagra vs cialis where can i buy cialis over the counter at walmart buy cialis buy cialis online buy cialis online without script canadian cialis online pharmacy cheap cialis cheap cialis generic cialis cialis 20 mg best price cialis before and after cialis canada cialis canada pharmacy online cialis cost cialis coupon cialis coupons cialis dosage cialis for daily use cialis free trial cialis generic cialis generic release date cialis online cialis online pharmacy cialis over the counter cialis over the counter at walmart cialis side effects cialis vs viagra cialis without a doctor's prescription generic cialis generic cialis at walmart generic cialis canada pharmacy generic cialis tadalafil side effects of cialis tadalafil tadalafil 20 mg tadalafil 20mg tadalafil 5mg tadalafil generic tadalafil generic at walgreens tadalafil side effects viagra vs cialis where can i buy cialis over the counter at walmart blue chew viagra scam buy viagra buy viagra online buy viagra online canada pharmacy buy viagra online without script canada pharmacy viagra generic canadian pharcharmy online viagra canadian viagra canadian viagra without a doctor prescription cheap viagra cialis vs viagra cost of viagra female viagra female viagra pills free viagra free viagra samples generic viagra generic viagra 100mg generic viagra available generic viagra canada price generic viagra online pharmacy generic viagra sildenafil citrate generic viagra without a doctor prescription herbal viagra how does viagra work how long does viagra last how much does viagra cost how to take viagra for maximum effect i took viagra mom levitra vs viagra mom gives son viagra natural viagra natural viagra alternatives that work natural viagra substitute nizagara 100 mg vs viagra online viagra online viagra without subscription over the counter viagra real life viagra demonstration revatio vs viagra side effects of viagra sildenafil sildenafil 100mg sildenafil 20 mg sildenafil 20 mg tablet sildenafil 20 mg tablet vs viagra sildenafil citrate sildenafil citrate 100mg sildenafil citrate 20 mg sildenafil coupons sildenafil dosage sildenafil dosage recommendations sildenafil generic sildenafil side effects sophia viagra sophia viagra bikini sophia viagra hot stendra vs viagra stepmom gives son viagra viagra viagra 100mg viagra before after photo actual viagra boner viagra canada online pharmacy viagra coupon viagra coupons viagra coupons from pfizer viagra dosage viagra dosage recommendations viagra erection viagra erection after ejaculation viagra for men viagra for sale viagra for sale on amazon viagra for women viagra generic viagra generic availability viagra generic release date viagra in action viagra on line viagra online viagra online canada pharmacy viagra online pharmacy viagra patent expiration viagra pill viagra pills viagra porn viagra prank viagra prices viagra samples viagra sex viagra side effects viagra substitute viagra vs cialis viagra without a doctor prescription viagra without doctor prescription what is viagra when will generic viagra be available blue chew viagra scam buy viagra buy viagra online buy viagra online canada pharmacy buy viagra online without script canada pharmacy viagra generic canadian pharcharmy online viagra canadian viagra canadian viagra without a doctor prescription cheap viagra cialis vs viagra cost of viagra female viagra female viagra pills free viagra free viagra samples generic viagra generic viagra 100mg generic viagra available generic viagra canada price generic viagra online pharmacy generic viagra sildenafil citrate generic viagra without a doctor prescription herbal viagra how does viagra work how long does viagra last how much does viagra cost how to take viagra for maximum effect i took viagra mom levitra vs viagra mom gives son viagra natural viagra natural viagra alternatives that work natural viagra substitute nizagara 100 mg vs viagra online viagra online viagra without subscription over the counter viagra real life viagra demonstration revatio vs viagra side effects of viagra sildenafil sildenafil 100mg sildenafil 20 mg sildenafil 20 mg tablet sildenafil 20 mg tablet vs viagra sildenafil citrate sildenafil citrate 100mg sildenafil citrate 20 mg sildenafil coupons sildenafil dosage sildenafil dosage recommendations sildenafil generic sildenafil side effects sophia viagra sophia viagra bikini sophia viagra hot stendra vs viagra stepmom gives son viagra viagra viagra 100mg viagra before after photo actual viagra boner viagra canada online pharmacy viagra coupon viagra coupons viagra coupons from pfizer viagra dosage viagra dosage recommendations viagra erection viagra erection after ejaculation viagra for men viagra for sale viagra for sale on amazon viagra for women viagra generic viagra generic availability viagra generic release date viagra in action viagra on line viagra online viagra online canada pharmacy viagra online pharmacy viagra patent expiration viagra pill viagra pills viagra porn viagra prank viagra prices viagra samples viagra sex viagra side effects viagra substitute viagra vs cialis viagra without a doctor prescription viagra without doctor prescription what is viagra when will generic viagra be available blue chew viagra scam buy viagra buy viagra online buy viagra online canada pharmacy buy viagra online without script canada pharmacy viagra generic canadian pharcharmy online viagra canadian viagra canadian viagra without a doctor prescription cheap viagra cialis vs viagra cost of viagra female viagra female viagra pills free viagra free viagra samples generic viagra generic viagra 100mg generic viagra available generic viagra canada price generic viagra online pharmacy generic viagra sildenafil citrate generic viagra without a doctor prescription herbal viagra how does viagra work how long does viagra last how much does viagra cost how to take viagra for maximum effect i took viagra mom levitra vs viagra mom gives son viagra natural viagra natural viagra alternatives that work natural viagra substitute nizagara 100 mg vs viagra online viagra online viagra without subscription over the counter viagra real life viagra demonstration revatio vs viagra side effects of viagra sildenafil sildenafil 100mg sildenafil 20 mg sildenafil 20 mg tablet sildenafil 20 mg tablet vs viagra sildenafil citrate sildenafil citrate 100mg sildenafil citrate 20 mg sildenafil coupons sildenafil dosage sildenafil dosage recommendations sildenafil generic sildenafil side effects sophia viagra sophia viagra bikini sophia viagra hot stendra vs viagra stepmom gives son viagra viagra viagra 100mg viagra before after photo actual viagra boner viagra canada online pharmacy viagra coupon viagra coupons viagra coupons from pfizer viagra dosage viagra dosage recommendations viagra erection viagra erection after ejaculation viagra for men viagra for sale viagra for sale on amazon viagra for women viagra generic viagra generic availability viagra generic release date viagra in action viagra on line viagra online viagra online canada pharmacy viagra online pharmacy viagra patent expiration viagra pill viagra pills viagra porn viagra prank viagra prices viagra samples viagra sex viagra side effects viagra substitute viagra vs cialis viagra without a doctor prescription viagra without doctor prescription what is viagra when will generic viagra be available