Any query which performs more than one full scan of a table. This inherently includes all table joins. ... SELECT x.a, x.b INTO p.a, p.b. FROM x. SELECT y.a, y.d.
Table is performed. In Chapter 9, we discuss aspects of reliability and load- balancing in Distributed Hash Tables. R. Steinmetz and K. Wehrle (Eds.): P2P ...
tures]: Distributed data Structures; E.2 [Data Storage. Representations]: Hash-table representations; G.3 [Pro- bability and Statistics]: Probabilistic algorithms.
We have developed RDHTs as backend for the DART search engine, whose goal is to ... confidence to a robust system free of restriction from a centrali authority.
a hierarchical DNS-like addressing. .... in the internet using the domain name of the host as a ... lookup(K) will return the full address of a container replica.
of buckets tagged as deleted. A brute force approach for non-real-time applications is to read all used entries from an aging table periodically and hash their ...
there are lock-free algorithms for different domains, such as linked lists [28], ... solved by means of a test-and-set register. ... of a compare-and-swap register. ...... processes, every private variable name of a process = p is extended with the.
Implicit order refers to e.g. FIFO and LIFO ... Using FIFO coordination corresponds to seeing the ... jects and node identifiers are mapped using a hash function.
Aug 23, 2015 - lookup latency by almost 30% and improves the reliability of the communication by nearly 10% via trusted contacts. I. INTRODUCTION.
Decision-trees have been widely used in scientific computing. ... lating a generic decision-tree into multiple compact hash tables; the conversion technique.
two aspects of load balance: the first one is the storage load of a ... Load balancing has been a crucial issue in the field of .... Additionally there are global con-.
ALVIS (002068). quest to a next hop .... is reached, CSCC limits the speed of growth of c to 1/c for .... has four outgoing buffers of either size 25 or 100 messages,.
MIT Press, 1994. 679. [2] M. Snir, S. Otto, S. Huss-Lederman, David Walker, and J. Dongarra. MPI - .... B. Kim, L. Matkins, and Y. Yerushalmi. Web Caching with ...
Chord6 [8] is an IPv6-based modified version of Chord with the ... hashing the node's IPv6 address prefix of specific length, ..... http://www.planet-lab.org.
Sep 24, 2009 - ... CPUs stopped getting faster. ⢠Physical limit on memory, CPUâCPU communication ... Move operation a ... b n1 n2 n3 n4 n5 key. âoldâ ...
Efficient hashing in network applications is still a chal- lenging task, because ... best of our knowledge, the EHT is the only data structure offering these .... hashed into it. Note, that if b is small, the probability of ...... STACS 2001. Lecture
Distributed hash tables (DHTs) are currently seen as an important building block for peer-to-peer ... This means that when the content in the network changes.
Secure Bootstrapping of Distributed Hash Tables in. Dynamic Wireless Networks. L. Cheng, K. Jean, R. Ocampo, A. Galis. Department of Electronic and ...
entries, and an aged table with incremental cleaning via emptying of deleted entries, this algorithm solves the structural problem of conventional open hashing ...
hash table while allowing concurrent, wait-free, linearly scalable .... depth of a bucket's list grows, and lookups become less efficient ...... Linux kernel mailing list.
[13] S.Ratnasamy, J.M.Hellerstein, and S.Shenker. Range queries ... [14] I. Stoica, R. Morris, D. Karger, M. Fran Kaashoek, and H. Bal- akrishnan. Chord: A ...
[3] F. Dabek, J. Li, E. Sit, J. Robertson, M. Kaashoek, and R. Morris. Designing ... [11] S. Ratnasamy, P. Francis, M. Handley, R. Karp, and S. Shenker. A scalable ...
Keywords: Distributed Hash Tables, Routing, de Bruijn net- works, Storage Load ... tional Competence Center in Research on Mobile Information and. Communication Systems .... path(p) and will call it the path of the peer. This key deter-.
that only a small fraction of the keys inserted into a hash table collide with existing keys (that is, ..... In this case, the probability for a reg- ular key to be dropped is ...
4 days ago ... RainbowCrack Project ... To crack single hash: ... SuperFetch is a feature of
Windows Vista & Window 7 that allocate many memory to preload ...
Hash Cracking with Rainbow Tables Introduction This document explains the rcrack program. The rcrack program lookup existing rainbow tables for the plaintext of user supplied hash. Six similar programs are available: Program
User Interface
GPU Acceleration
rcrack
Command Line
rcrack_cuda
Command Line
NVIDIA CUDA
rcrack_cl
Command Line
AMD OpenCL
rcrack_gui
GUI
rcrack_cuda_gui
GUI
NVIDIA CUDA
rcrack_cl_gui
GUI
AMD OpenCL
Command line program is ideal for batch processing, and GUI program is easy to use. Rainbow tables used by rcrack program must already be sorted with rtsort program, and optionally converted to .rtc file format with rt2rtc program.
Rainbow Table Lookup with rcrack/rcrack_cuda/rcrack_cl Program General Use Assume rainbow tables are in directory c:\rt. To crack single hash: rcrack
In the example above, the rcrack/rcrack_cuda/rcrack_cl program will lookup rainbow tables in c:\rt1 and c:\rt2 directories sequentially.
Special Consideration for LM/NTLM Hash LM/NTLM hashes are usually saved in text file of pwdump format. Content of typical pwdump file: Administrator:500:1c3a2b6d939a1021aad3b435b51404ee:e24106942bf38b cf57a6a4b29016eff6::: Guest:501:a296c9e4267e9ba9aad3b435b51404ee:9d978dda95e5185bbeda9b 3ae00f84b4::: To load and crack LM hashes from pwdump file: rcrack
c:\rt -lm pwdump_file
rcrack_cuda c:\rt -lm pwdump_file rcrack_cl
c:\rt -lm pwdump_file
To load and crack NTLM hashes from pwdump file: rcrack
c:\rt -ntlm pwdump_file
rcrack_cuda c:\rt -ntlm pwdump_file rcrack_cl
c:\rt -ntlm pwdump_file
Rainbow Table Lookup with rcrack_gui/rcrack_cuda_gui/rcrack_cl_gui Program Step 1: Load the Hashes
2
Step 2: Specify the Rainbow Tables to be Searched
Select "Search Rainbow Tables..." to search individual rainbow tables. Select "Search Rainbow Tables in Directory..." to search all rainbow tables in a directory. Select "Search Rainbow Tables Group [group name]" to search rainbow tables in multiple directories sequentially. All rainbow table groups are defined in configuration file group.txt. When rainbow tables are specified, hash cracking will start.
Performance Tips Memory Requirement 4 GB memory is minimal and 8 GB or more memory is recommended. Larger memory always help to improve performance when searching large rainbow tables. 3
Hard Disk Because rainbow table must be loaded from hard disk to memory to look up and some rainbow table set can be as large as hundreds of GB, hard disk performance becomes a very important factor to achieve overall good hash cracking performance. We suggest put rainbow tables in RAID 0 volume with multiple hard disks. Windows operating system natively support software RAID 0 called "striped volume". The rcrack program always read data from hard disk sequentially. There is no random access.
