Critical Thinking Assignment3-5 PDF

Preview

Summary

Critical Thinking Assignment...

Description

Cr i t i c alThi nki ng35:Has hAl gor i t hm Compar i s on Re s e ar c ht hedi ffe r e nthas hal gor i t hms( Me s s ag eDi g e s t ,Se c ur eHa s hAl g or i t hm,and RI PEMD)a ndt he nc r e a t eat abl et ha tc ompar e st he m.I nc l udet hes i z eo ft hedi g e s t ,t he numbe rofr oundsne e de dt oc r e a t et hehas h,bl oc ks i z e ,whoc r e a t e di t ,wha tpr e vi oushas h i twa sde r i v e df r om,i t ss t r e ngt hs ,andi t swe akne s s e s . Message Digest

Secure Hash

RIPEMD

Digest Size

128

160

128

# of rounds needed

4

80

48

512

512

512

Block Size Creator

Ronald Rivest

National Security Agency

TheRI PECon s or t i u m

Derivative

MD4

MD5

MD4

Strengths

Used as checksum

Good for identity revisions

No patent constraints & designed in open academic community

Weaknesses

Cryptographically broken and unsuitable for further use

Well funded opponents & one collision attack & length extension attack

Questionable security & chance of collisions...