PRIVACY POLICY

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Correlation Method

To find a link between problems with the verses of Al - Quran then used the correlation method. This method uses mathematical calculations to produce a number that indicates the link between the problem and verses of the Qur'an verses. Correlation formula is :

Where x and y is the average sample mean (array1) and average (array2).

Restore the correlation coefficient of the array1 and array2 cell ranges. Use the correlation coefficient to determine the relationship between the two properties. For example, you can examine the relationship between the average temperature of the location and use of AC.

If an array or reference argument contains text, logical values, or empty cells, those values are ignored, but cells with zero values will be included return CORREL # N / A.

The Security of EL GAMAL

some people ask me, it is posibble to break EL Gamal Cryptosytem...i said, that everything is posibble in the Computer World...But to break El Gamal it have a long way and a long time... El Gamal Security have a discrete problem. but i have some tips how to analyze the El gamal Strength... this way not to break and use to crime..but to give us some known, to make our El Gamal Criptosystem better strength....

 ElGamal is very secure. The only ways to break it are by finding collisions in the hash functions it uses, or (in theory) by computing the secret key when two ciphertext messages are sent with the same function of the secret exponent. See Wikipedia for more details

You can do what I do when using safe (p=2p'+1) prime moduli, which is to 
convert the plaintext to all QR's so semantic security is preserved - 
although this is in effect working in the subgroup of QR's of order p', 
which is presumed DDH-hard. 



Which is just a feeble excuse :) to present this method of ensuring all the 
bits are QR's, and the overall scheme is IND-CPA. I don't know who else 
invented the method first, but I haven't seen it elsewhere: 


[- 

Chose p' so p' = 1 mod 4. Thus p = 3 mod 8, and (2/p) = -1 (ie 2 is a QNR 
mod p). 

Before encryption prepend the bits 001 to the plaintext, test for QR: if it 
is QR then pass on to the encrypter, if it is NQR then shift left (multiply 
by two) before passing it on. 

2 is NQR, and any NQR x any NQR = a QR - so all the blocks sent to the 
encrypter are QRs. 

After decryption, shift right if the second bit of the block is set. Discard 
the first 3 bits.

I Love U (To MY CinderElla)

I love you

like the night loves day
like the dark miss the light
like sand to the water
like nails continue to grow
although always you cut

I love you
sincerely candle on fire
a valley on the mountain would
as calm as a lake in the sky
missed a star on the day
of the heart that you hold
because no registration for the universe
heart that can be as high as you reach
sky-high because no
deep heart can you dive
not as deep as the ocean

I love you
as arrows pointing in my face

pain will rip my pride

to read my Love Story this

IF You Know (an insomniac dreams)

occasional night without the moon appear ...
add to the quietness of the silence ...
left heaven to be abused ..

but never sleep without a dream ...
through the eyes of a vain ..
who continue to come, while dancing the song of lonely ...

I'll never know ..
when he came to me ..
through the river and the hill of soul ...
and I also never knew ...
when she went ...
carry the dream of expensive ...
or also I never knew ...
when she flew ...
carried by the wind ... the wind ... and the male beetles

Surabaya,
dawn, October 2007

ECC Cryptography

elliptic curves cryptosystem or shortened by the ECC, is one of the asymmetric cryptographic system that uses the discrete logarithm problem (the discrete logarithm problem). Structure of elliptic curves are used as mathematical operations group to establish a process of encryption and description

In 1985, Neil Koblitz and Victor Miller independently introducing Elliptic Curves Cryptosystem - ECC which uses the discrete logarithm problem at the points elliptic curve called ECDLP (Elliptic Curves Discrete Logarithm Problem). This Criptosystem ellipse curve can be used in any purposes such as:
• Scheme encryption (ElGamal ECC)
• Digital Signature (ECDSA - Elliptic Curves Digital Signature)
• key exchange protocol (Diffie Hellman ECC)

Elliptic Curves Cryptosystem using discrete logarithm problem in elliptic curve using elliptic curve groups. Structure of elliptic curves are used as mathematical operations group to establish a process of encryption and description. This method causes difficulties to calculate k given Q and P, where Q = k P.

for example calculate the ECC, awaiting the next blog :)

Analyzing in Text Mining

Text Mining is Mine the data in the form of text. Source of data is usually derived from the documents. The goal is to find words that can represent what is in the document so that it can be inter-connectedness analysis of documents

phase of text mining are:
Tokenism
Filtering
Stemming
Tagging
Analyzing

what is Analyzing ?
Finding how much connection between the words between documents
Term Frequency-Inversed Document Frequency (TF-IDF) is the simplest algorithm is usually used for scoring

the process of TF-IDF