Teenage pregnancy in ireland Thesis Example | Topics and Well Written Essays - 4000 words

Teenage pregnancy in ireland - Thesis Example The teenage pregnancy is a contentious issue in Ireland, and the problem is especially pronounced in County Louth which is one of smallest counties in Ireland with the highest rate of teenage pregnancies (Crisis Pregnancy Agency, 2007). Many society members view most cases of teenage pregnancy as a burden and a barrier to the achievement of the necessary education status and employment standards. However, there is also a growing acceptance of non-standard family models. This research will aim to explore the attitudes of the society toward teenage pregnancy. The literature review will comprehensively discuss the problem of teenage pregnancy, teenage birth rates in Ireland, risk factors and health risks of teenage pregnancies to provide the theoretical aspects of the research on teenage pregnancy as well as the society attitudes toward young mothers. According to Keller (2002), the rate of teenage pregnancies in both County Louth and Dublin is the same i.e. 6.8pc. However, the statisti cs from the 2002 research could be currently different due to the fact that the difference in the sizes of the two cities leads to a difference in the social norms. Being larger than County Lough, the teenage birth rates could be higher in Dublin because the sexual activities will be more rampant, the catholic culture will have less impact, and the multicultural impact is high. The 2010 statistics from the Central Statistics Office (CSO) indicates that teenage pregnancy in Ireland has been reduced in significant levels and it led to birth of 2, 043 babies for the mothers under the age of 20 (CSO, 2010). This was a decline from the 2006 statistics, when 2352 cases represented 0.4% of the total births among women that year (Crisis Pregnancy Agency, 2007). Majority of the teenage births are noted among girl between eighteen to nineteen years old. For example,

Aerodynamics Which shape can accomplish the design objectives Essay

Aerodynamics Which shape can accomplish the design objectives - Essay Example However, they are not to be assumed in the current time where fuel is expensive. The National Aeronautics and Space Administration (NASA) (2013) define aerodynamics as the manner in which air travels around things. It indicates that through the laws of aerodynamics, researchers have been able to expound on how aircrafts fly. Physics indicates that for an airplane to be able to travel through the air, there are force constituents that make up aerodynamics. These force constituents relate in such a way that an airplane is able to fly symmetrically. When flying symmetrically, two forces are in action. They are lift and drag. Drag is defined as the part of the aerodynamic force, which is parallel to the wind in action. It is said to impede on the forward movement of the airplane. If an airplane is travelling at a speed less than that of the speed of sound through air, it experiences induced and parasite drag (Dole & Lewis, 2000). On the other hand, lift is the sum of all aerodynamic forces that are acting on an airplane, which is after they are determined perpendicu larly to the path of flight. It is the result from forces of pressure that act on the surface exposed to airflow. So, what design can save fuel? It is the paper’s aim to answer this question. Firstly, this paper will look at the arguments in support of the idea that winglets help in saving fuel. Secondly, it will examine the arguments against this idea. Thereafter, a conclusion shall be made on the fuel saving ability of winglets. Lift is required to cover for mass forces and is approximately equal to the weight of the airplane (Torenbeek & Wittenberg, 2009). The wings and tail plane generate lift successfully when drag is at most minimum. Hence, there arises a lift to drag ratio (L/D) that is used to measure their efficacy. Minimum drag (D min) is obtained by: (W) Ã · (L/D) max. With these in mind, there has been questions around the best

The Automatic Stabilizer Essay Example for Free

The Automatic Stabilizer Essay In macroeconomics an automatic stabilizer refers to any economic program or policy that automatically increases or decreases to counteract or stabilize the present economic trend without the need for governmental assistance (â€Å"Automatic Stabilizer,† 2007). Auerbach Feenberg (2000) describe automatic stabilizers as â€Å"elements of fiscal policy† that moderate fluctuations in aggregate output. From the Keynesian viewpoint, automatic stabilizers may include those constituents of the government budget that increase government spending and reduce taxes during a recession, and do exactly the opposite during a boom (Auerbach Feenberg). Automatic stabilizers are precipitated by shocks that cause the aggregate economic activity to either increase or decrease (Auerbach Feenberg). As an example, there are certain kinds of taxes, e. g. the progressive tax, that â€Å"rise more than proportionately† to offset increases in income (Automatic Stabilizers). If these taxes did not exist, the government would have to take action against increases in income so as to prevent the inflation rate from rising in the near future. But, if the government had to take action to raise taxes in that event, it would first have to determine that income has, indeed, risen, before it would pass a law and wait for the law to go into effect. This could be a rather time-consuming process. Moreover, by the time the new law is ready to have an effect on the economy, the economic trend may have reversed (Automatic Stabilizers). Automatic stabilizers tend to help the economy regardless of whether it is experiencing or bound to experience a boom or slump. When income decreases, the economy may ultimately hit a recession. However, â€Å"[u]nemployment compensation and income supplements† for the poor may come to the rescue before the government decides to take action against the drop in income (Automatic Stabilizers). As the income drops, there are more people that are eligible for â€Å"[u]nemployment compensation and income supplements (Automatic Stabilizers). Hence, the economy may be saved from experiencing a downturn through these automatic stabilizers. Auerbach Feenberg have estimated that the payroll and income taxes in the United States have the power to offset approximately eight percent of an initial shock to the Gross Domestic Product. However, the impact of these taxes was higher during late 70s and early 80s because of high inflation. Of course, tax rates have an effect on the power of these automatic stabilizers. According to the authors, however, â€Å"the effectiveness of an automatic stabilizer depends not only on how much of an increase in disposable income it produces, but also how large a private response in consumption this increase in disposable income generates (Auerbach Feenberg). † This is because the spending of households with different levels of income is expected to differ even as the automatic stabilizers are at work (Auerbach Feenberg). Undoubtedly, the effectiveness of automatic stabilizers differs among nations with different levels of income inequality. Moreover, countries differ in their tax rates and the design of their income supplements. Therefore, automatic stabilizers are expected to have differing impacts across countries. Regardless of their impacts, however, automatic stabilizers are very helpful for the economics in which they are at work (Automatic Stabilizers). Lastly, by estimating the impacts of various automatic stabilizers, governments may design programs and policies, that is, automatic stabilizers, that would counteract shocks more effectively in the future. Methods of reducing income inequality are also expected to alter the effectiveness of the automatic stabilizers.

Fully Homomorphic Encryption and cryptography

Fully Homomorphic Encryption and cryptography Introduction Transferring files between machines (and users) is a common daily occurrence although the confidentiality of the data is a basic condition. Now problem was how to secure them from inadvertent addressee from observing the data, which are supposed to confidential and likely on risk if prepared well-known to negligent parties. In each of these cases, its important to know what options are available to get your file from point A to point B and to comprehend whether the technique you choose provides sufficient security given the sensitivity of the data being transferred. Cryptography is ability of secret text, or more precisely of stock up resource (for a long or shorter period of time) in a shape which allows it to be revealed to those you wish to see it yet hides it from all others. A cryptosystem is a technique to accomplish this. Cryptanalysis is to put into practice to overcome such endeavors to hide information. Cryptology comprises of both cryptography and cryptanalysis. The unique information to be hidden is called plaintext. The concealed information is called ciphertext. Encryption or Decryption is any modus operandi to convert plaintext into ciphertext. A cryptosystem is designed so that decryption can be consummated only under certain conditions, which usually means simply by persons in control of both a decryption engine (these days, generally a computer program) and a meticulous piece in sequence, called the decryption key, which is supplied to the decryption engine in the course of decryption. Plaintext is transformed into ciphertext by process of an encryption engine (again, generally a computer program) whose operation is fixed and determinate (the encryption method) nevertheless which functions in practice in a way dependent on a piece of information (the encryption key) which has a major effect on the output of the encryption process. The main purpose was to make sure privacy while you transferring your private data from one place to another place do not matter electronically or via users. There were many scheme but very complicated to follow them and most important less security. So time by time many scientists discover different techniques but Gentrys technique â€Å"Fully Homomorphic Encryption† got a tremendous value against all technique. All others techniques were performing well but with restriction but Gentrys scheme user can perform unlimited action. Objective Cloud computing Literature review â€Å"Homomorphic encryption is a paradigm that refers to the ability, given encryptions of some messages, to generate an encryption of a value that is related to the original messages. Speciï ¬ cally, this ability means that from encryptions of k messages (m1,†¦,mk), it is possible to generate an encryption of m* = f(m1,†¦,mk) for some (efficiently computable) function f. Ideally, one may want the homomorphically generated encryption of m* to be distributed identically (or statistically close) to a standard encryption of m*. We call schemes that have this property strongly homomorphic. Indeed, some proposed encryption schemes are strongly homomorphic w. r. t some algebraic operations such as addition or multiplication.† (Rothblum R, 2010). â€Å"An encryption method is presented with the novel property that publicly revealing an encryption key does not thereby reveal the corresponding decryption key. This has two important consequences: 1. Couriers or other secure means are not needed to transmit keys, since a message can be enciphered using an encryption key publicly revealed by the intended recipient. Only he can decipher the message, since only he knows the corresponding decryption key. 2. A message can be â€Å"signed† using a privately held decryption key. Anyone can verify this signature using the corresponding publicly revealed encryption key. Signatures cannot be forged, and a signer cannot later deny the validity of his signature. This has obvious applications in â€Å"electronic mail† and â€Å"electronic funds transfer† systems.† (Rivest et al, 1978) â€Å"Homomorphic encryption enables â€Å"computing with encrypted data† and is hence a useful tool for secure protocols. Current homomorphic public key systems have limited homomorphic properties: given two ciphertexts Encrypt (PK, x) and Encrypt (PK, y), anyone can compute either the sum Encrypt (PK, x+y), or the product Encrypt (PK, xy), but not both.† (Boneh et al, 2006) ARMONK, N.Y 25 Jun 2009: â€Å"An IBMResearcher has solved a thorny mathematical problem that has confounded scientists since the invention of public-key encryption several decades ago. The breakthrough, called privacy homomorphism, or fully homomorphic encryption, makes possible the deep and unlimited analysis of encrypted information data that has been intentionally scrambled without sacrificing confidentiality.† (IBM, 2009) â€Å"We propose the first fully homomorphic encryption scheme, solving a central open problem in cryptography. Such a scheme allows one to compute arbitrary functions over encrypted data without the decryption key i.e., given encryptions E(m1) ,†¦,E(mt) of m1,†¦.,mtone can efficiently compute a compact ciphertext that encrypts f(m1,†¦.,mt) for any efficiently computable function Æ’. This problem was posed by Rivest et al. in 1978.† (Gentry C, 2009) â€Å"Searching databases is usually done in the clear. And even if the query is encrypted, it has to be decrypted (revealing its contents) before it can be used by a search engine. Whats worse is that databases themselves are stored as plaintext, available to anyone gaining access. The smarter way to handle sensitive information would be to encrypt the queries, encrypt the database and search it in its encrypted form. Impossible until now, IBMs T.J. Watson Research Center (Yorktown Heights, N.Y.) recently described a homomorphic encryption scheme that allows encrypted data to be searched, sorted and processed without decrypting it. Fully homomorphic encryption schemes theoretically allow ciphertext to be manipulated as easily as plaintext, making it perfect for modern cloud computing, where your data is located remotely.† (Johnson R C, 2009) Body History of Cryptography In earliest era communications or correspondence among recipient and correspondent were only possible through extremely safe and sound way like loyal pigeon, physically or any other source but must be trusted. That was a time when it was very tough to believe or trust on available sources. There was a little doubt and big risk for the sender was if transporter discloses the information then any one can harm them. Progressively a newly ideas came with world called Cryptography/Encryption† means this is a technique in which the sender encrypts the communication using proper key and its only possible for receiver to decrypt it if he possessed the key. Key based Encryption. In key based encryption keys are the most important part of creating new ciphertext. A sequence of small piece used generally in cryptography, letting people to encrypt/decrypt facts and the same key can be used to carry out additional mathematical business as well. Specified a secret message, a key established the connection with the sequence to the ciphertext. The key we use for a special cryptosystem has worth so whenever this key used to ciphertext, always lets the encrypted communication to be decrypted and always doing reverse like encrypt the plaintext. In ancient era because calculation was very hard so they prefer to use not lengthy keys in respect of bits but on the other hand its safe to use longer key. Communications also one can encrypt in n-bit blocks. It is true that the longer a key is, more difficult for one to break the encrypted message. Encryptions consist of two categories. Private Key or Symmetric Key Encryption Public Key or Asymmetric Key Encryption Private Key / Symmetric Key Encryption This was thousands of years ago when Julian Caesar used this scheme to send his communication to his military. He used very simple key based classic cryptographic algorithm in which he just shifted each letter with preplanned key number 4. In his algorithm key varies so thats why we cannot guess what number he will use next. Lets take said number 4 which means â€Å"A† will swap with â€Å"D† and â€Å"B† will swap with â€Å"G† and so on â€Å"X† will swap with â€Å"A† etc. ABCDEFGHIJKLMNOPQRSTUVWXYZ DEFGHIJKLMNOPQRSTUVWXYZABC The same letter changing technique was useful to small case correspondence and also covering around the letters as well. (S. Tewksbury). Cryptography history is very old so we can divide it in to two categories. Classic era Cryptography Computer era Cryptography In classic era there was no computer or any electronic machine to solve this problem so people were used pen and paper to unreveal the truth of letters. Julian Caesar technique is classic era practice. Until WWII all cryptography techniques are none as classic era cryptography. After WWII development of machine made cryptography life very complex and that time was very easy to break all classic time encryptions mostly called key based techniques. Key word was very important in these practices and because of the key it was very easy to break through encryption algorithm. ROT13 is the best practice of encryption algorithm which we know its famous name Caesar cipher and this is extension of Julian Caesar scheme. The most useful technique was ROT13 in which they used fix key 13 to encrypt the letters. This algorithm was very famous in the beginning of computer era and anyone wants to use ROT13 scheme, both side parties must use the same key to encrypt and decrypt the code. This key calle d secret key. The development of the machine set a stander in respect of key codes and then everyone prepared a code book to share as a key code book. For example in ROT13 simply they rotate the letters by 13 places. Application of this scheme is very easy like Julius Caesar technique where he swapped letters with fix key 4 and now in ROT13 with key 13 and wrapping around like â€Å"a† become â€Å"n† and â€Å"m† become â€Å"z† and wrapping continue if necessary but the problem was user can play only English alphabet. The beauty of this technique was it made its function its own inverse like for any text x we can write its function mathematically inverse of ROT13(x) or ROT13 (ROT13(x)) where x is belong to a character which one wants to encrypt. This characteristic furthermore called an involution in arithmetic and a give-and-take code in cryptography. This scheme work as below ABCDEFGHIJKLM ↔ abcdefghijklm NOPQRSTUVWXYZ ↔ nopqrstuvwxyz In this scheme problem was again if someone steel or rob your data then it is very easy to decode it. This is not reasonable cryptographic proposal even though its known as secret key cryptosystem. If we observe closely the ROT13 is partially homomorphic particularly with respect to the concatenation function because it has a reciprocal property. Lets write a function to prove its homomorphic property using secret key 13, in this function we encrypt the text using said algorithm and we will add the encrypted text to see its homomorphic property and then finally decrypt the result. Java ROT13 Code. import java.util.*; public class ROT13 { static int x,y,n,fx,l,m; public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println(Enter your text); String t = sc.nextLine(); int j=0; int key=13; for (int i=0; i { char ch3 = t.charAt(j); if (ch3 >= a ch3 else if (ch3 >= n ch3 else if (ch3 >= A ch3 else if (ch3 >= A ch3 System.out.print(ch3); j++; }}} OUTPUT Enter your text HelloWorld UryybJbeyq The above algorithm is very uncomplicated algorithm to illustrate how ROT13 scheme works and in above output â€Å"Uryyb Jbeyq† is encrypted cipher formed with above algorithm. To check its homomorphic property now anyone can break this cipher text and then apply a concatenation (addition operator) to this text. After getting a new text anyone can apply ROT13 algorithm to decode it to see if he/she is getting the original text. import java.util.*; public class ROT13 { static int x,y,n,fx,l,m; public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println(Enter yout text); String t = sc.nextLine(); int j=0; int key=13; for (int i=0; i { char ch3 = t.charAt(j); if (ch3 >= a ch3 else if (ch3 >= n ch3 else if (ch3 >= A ch3 else if (ch3 >= A ch3 System.out.print(ch3); j++; } System.out.println(); System.out.println(Enter yout 2nd text); String t1 = sc.nextLine(); int j1=0; int key1=13; for (int i1=0; i1 { char ch3 = t1.charAt(j1); if (ch3 >= a ch3 else if (ch3 >= n ch3 else if (ch3 >= A ch3 else if (ch3 >= A ch3 System.out.print(ch3); j1++; } System.out.println(); System.out.println(Enter the 1st encrypted result=); String a=sc.nextLine(); System.out.println(); System.out.println(Enter the 2st encrypted result=); String a1=sc.nextLine(); String con = a+a1; System.out.print(con); System.out.println(); int j2=0; int key2=13; for (int i2=0; i2 { char ch3 = con.charAt(j2); if (ch3 >= a ch3 else if (ch3 >= n ch3 else if (ch3 >= A ch3 else if (ch3 >= A ch3 System.out.print(ch3); j2++; }}} OUTPUT Enter the 1st encrypted result=Uryyb Enter the 2st encrypted result=Jbeyq UryybJbeyq HelloWorld Explanation of Output Text a = Encrypt (13, Hello); a = Uryyb Text b = Encrypt (13, World); b = Jbeyq Text c = Concat (a,b); c = UryybJbeyq Text d = Decrypt(13, c); d = HelloWorld As we can see clearly that we used an addition (concat) property to encrypt the text but after this we got the same result as we got without using concat. This property demonstrates that ROT13 is partially homomorphic scheme with respect of addition. The problem start with this technique when machine came in to being and it was easy to break secret code and even drawback of this scheme was numbers because user only were to able to encrypt alphabetic. Then gradually, ROT47 new scheme introduced and this scheme was derived from ROT13 as-well. Inside this scheme there was a big border for its users so now they were able to play with numbers and special characters. ROT47 exercise a larger alphabet, resulting from a regularcharacter programmingwell-known asAmerican Standard Code for Information Interchange (ASCII). The ASCII is a 7-bit code to correspond to English alphabet structure and these codes are in practice to symbolize data which includes numbers used in central processing unit, interactions technology and additional associated mechanism. The first publication of this standard code was in 1967 then afterward restructured and produced as â€Å"ANSI X3.4-1968†, at that time as â€Å"ANSI X3.4-1977† and at last as â€Å"ANSI X3.4-1986†. It is given that, it is a seven-bit code and it preserves the largest part symbolizing 128 characters. It presently characterize 95 printable characters together with 26 upper-case letters (A to Z), 26 lower-case letters (a to z), 10 numbers (0 to 9) and 33 special characters as well as arithmetic signs, punctuation marks and space character. . (Maini A K, 2007) However ROT13 introduced with new values of its alphabets separately both capital and smaller. Unlike ROT13, ROT47 was also not able to protect your text at all. This scheme is also having homomorphic property like addition. If closely observe the both scheme then we will be able to see that there is only little difference in both schemes. Both working pattern is same, both dealing with alphabets but ROT47 got advantage because this scheme deal with numbers and individual characters. In this method ASCII cipher connect to trade letters or numbers during encryption/decryption. Knowledge of ASCII codes to one lead to revel the facts. So here this scheme becomes the same like ROT13, so failure of this scheme once again involvement of the secret key. Is Symmetric Key Encryption Secure? ROT13 encryption scheme is not secured at all because the code of this scheme you can decode very easy. This was the disadvantage of this scheme. The reason we encrypt our transcript is to make it protected from illegitimate access however this scheme only consist of 26 characters which is very simple to decipher even from side to side a common person who have an access to the written text. For example: Anyone wishes to encrypt â€Å"atotaa†, after that the cipher we will achieve â€Å"ngbgnn† which is very effortless to work out through repetition of â€Å"a g†. ROT47 was novel encryption scheme derived from ROT13and also another example of symmetric key encryption but bit difficult. In ROT47 moving the basic letter swiftly like ROT13 with given substitute of ASCII. In this scheme one can take care of numbers and many other special characters as a substitute of the basic 26 letters however awareness of ASCII codes can show the way to one to search out the facts. Consequently, at this point this scheme turn into insecure category like ROT13, so failure of this scheme was once again its own typical contribution of the ASCII codes. Public Key or Asymmetric Key Encryption An important contribution in the peak field that time named â€Å"public-key cryptography† fulfilled by Whitfield Diffie, Martin Hellman and Ralph Merkle in 1976 when they introduce an elegant cryptosystem for a public-key. The major difference as compare to prior scheme was one extra key named as public key. The public key assume to be used for encryption and then private key will use to decryption. Cryptography has been a derivative security entirety once a secure channel exists along which keys can be transmitted, the security can be extended to other channels of higher bandwidth or smaller delay by encrypting the messages sent on them. The effect has been to limit the use of cryptography to communications among people who have made prior preparation for cryptographic security. (W Diffie and M Hellman, 1976) ABOVE NOT COMPLETE YET RSA respected the idea of Diffie et al and in 1978 they introduced first public key algorithm in public at MIT byRon Rivest,Adi Shamir, andLeonard Adleman. They illustrate what is predetermined by a trapdoor cipher, but how do you construct one? One usually used of the secret message of this type is called RSA encryption, wherever RSA are the initials of three initiators which are Rivest, Shamir, and Adleman. It is based on the idea below; it is simply multiply numbers together, particularly with the help of computers reason, factorization of this numbers could be difficult. To get them, one needs to factor N, which seems to be an extremely complex problem. But exactly how is N used to encode a message, and how are p and q used to decode it? Below is presented a complete example, although there will be used minute prime numbers so it is easy to follow the arithmetic. Actually in RSA encryption scheme they used very big prime numbers. As per them it makes scheme more secure because in their algorithm they need to factorize the number to get the result. If someone using small number then its easy to factorize the number but it is not the same with big number. Therefore, they in their algorithm they used key size 768-bit for ordinary use and they suggest 1024-bit key size for commercial use but for highly important information key size should be double (2048-bit) as compare to business key size just for mind satisfaction regarding security threat. RSA advised to one and all concerning their scheme that how scheme work to get own encryption and decryption key if any want using their method. First step decide two separate prime numbers like p, q. Later than multiply integers pq and make n = pq public. Exposing n in public will help one to hide original integers like q q and now it will be very difficult for illegitimate person to find original integers p q because factorization will be very hard for big prime numbers. This achievement will help to hide the value of multiplicative inverse d and the way derived from co-prime e. Choosing big integer d but d must comparatively prime with φ((p-1).(q-1)) and must fulfill the condition of greater common devisor gcd (d, (p-1)(q-1)). Finally one can compute the integer e â€Å"1 Mathematically Implementation of RSA algorithm RSA algorithm steps below Two prime integers p=61 and q=53 Multiply both prime integers n = pq = 61.53=3233. The value of n afterward used as modulus for public and private key. Calculate φ(n) = (p-1).(q-1) = 3120. Where φ is Eulers totient function. For the value of e = 17 select any integer from 1 One can conclude d = e-1 mod φ(n). The value of d = 2753 will be using in private key exponent so supervision of this key is essential. Extended Euclidean algorithm helps to determine the d. Thepublic keywill be (n= 3233,e= 17) and for text m the encryption function is m17 mod φ(n). Theprivate keyis (n= 3233,d= 2753) and for the encrypted text c decryption function will be cd mod φ(n). For example: Encryptm= 65, we compute c= 6517(mod 3233) = 2790. For decryptc= 2790, we calculate m= 27902753(mod 3233) = 65. Using the above boring however easy for a computer to calculate, One can decode others message and obtain the original message m = 65. Java Code for RSA Algorithm: public class RSACode { static long x,y,n,fx,l,m; static int p,q,e,tn; public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println(Please enter ist prime no P); p =sc.nextInt(); System.out.println(Please enter 2nd prime no q); q =sc.nextInt(); n=p*q; System.out.println(p*q = n +n); //Totient of n tn=(p-1)*(q-1); System.out.println(Totation of tn(pq) = +tn); int k=tn; for (int i=1; i { int fi= (int)(Math.pow(2, i)+1); l=fi; while (tn % fi !=0) { int r = (tn % fi); tn = fi; fi = r; } if (fi==1) System.out.println(GCD Of+[+k+,+l+] is+fi+Recommended for you); } System.out.println(So please use +l+ as e); System.out.println(Enter number to exponent e); e=sc.nextInt(); for (int d=1;d if ((e*d)%k==1) System.out.println(The value of e^-1 mod n= d ==+d); System.out.println(Enter the above valu of d); int d1=sc.nextInt(); System.out.println(Enter number to encrypt); m=sc.nextInt(); //encryption function is c = (m ^ e)/n; double encryption = (Math.pow(m, e)% n); System.out.println(encryption Key =+ encryption); System.out.println(The value of d= e^-1 mod n ==+d1); double decrypt = (Math.pow(encryption, d1) % n); System.out.println(encryption +to decryption is = + decrypt); OUT PUT Please enter ist prime no P 5 Please enter 2nd prime no q 7 p*q = n 35 Totation of tn(pq) = 24 GCD Of[24,5] is1Recommended for you GCD Of[24,9] is1Recommended for you So please use 9 as e Enter number to exponent e 5 The value of e-1 mod n= d ==5 Enter the above value of d 5 Enter number to encrypt 9 encryption Key =4.0 The value of d= e-1 mod n ==5 4.0to decryption is =9.0 The above java code works fine on small prime integers with small exponential power and small value of d (multiplicative inverse). OUT PUT Please enter ist prime no P 61 Please enter 2nd prime no q 53 p*q = n 3233 Totation of tn(pq) = 3120 GCD Of[3120,17] is1Recommended for you So please use 17 as e Enter number to exponent e 17 The value of e-1 mod n= d ==2753 Enter the above value of d 2753 Enter number to encrypt 65 encryption Key =887.0 The value of d= e-1 mod n ==2753 887.0to decryption is =NaN The same java code work perfect on big numbers but there you need different data types to adjust the output value the error NaN means data type mismatch. Practically Implementation An RSA operation whether encrypting, decrypting, signing, or verifying is fundamentally a modular exponentiation. This computation is executed with a sequence of modular multiplications. In practical uses, it is general to select a small public exponent for the public key. In reality, entire group of users preserve to use the matching public exponent, every one through a different modulus. However there are few boundaries on the prime factors of the modulus when the public exponent is set. For the reason of this it creates encryption more rapidly than decryption and verification quicker than signing. Through the typical modular power algorithms used to put into practice the RSA algorithm, public-key operations takeO(k2) steps, private-key operations take O(k3) steps, and key generation takesO(k4) steps, wherekis the number of bits in the modulus. (RSA 2010) Is RSA Work Secure? This scheme is not fully secure on the basses of following attacks Elementary attack Low private exponent attack Low private exponent attack Implementation attack Boneh et al Homomorphic Encryption (Boneh D, 1999) examined the RSA cryptosystem, was original exposed in the 1977-1978 topic of â€Å"Scientific American†. The cryptosystem is mainly generally in practice for offering confidentiality and certification validity of digital data. In those days RSA was positioned in many big business organizations. It is used by web servers and browsers to safe web transfer, it is used to make sure confidentiality and legitimacy of correspondence, it is used to safe remote login phase, and it is at the heart of electronic credit-card payment method. However, RSA is commonly take part in meanings anywhere safety of digital data is on risk. In view of the fact of first publication, the RSA scheme evaluates meant for weakness through a lot of examiners. However since 1977 to 1999, examiner have direct to a many interesting attacks but not any of them is critical. They typically demonstrate the risk of offensive use of RSA. Definitely, protected execution of RSA is a nontrivial job. Twenty years of research into inverting the RSA service created various perceptive attacks, other than no shocking attack has ever been discovered. The attacks exposed so far mostly demonstrate the drawbacks which one can avoid once applying RSA. Currently comes into view that correct applications can offer assurance to afford protection in the electronic globe. Openattacks on RSA scheme: Chosen chipper attack is very famous in cryptography in it attacker gathered information in pieces and then process it. This attack claimed against RSA in 1998 by Y. Desmedt and A. M. Odlyzko. According to RSA choose two prime numbers to calculate n then use φ(n) for modulus in encryption and decryption but if any enemy used brute force attack on their public key (N, e) to find the factorization and as well as their φ(n). On the other hand if we assume that only big prime number only allowed in RSA then it will affect the speed of the scheme because performance depend on n-bit key. While encrypting with not big encryption supporter e= 3 and small values of them like m Another attack was if sender send a plain clear message to e or more beneficiary after encrypted and the recipients distribute the similar exponente, except differentintegers p,q, andn, in that case it is simple to decode the plaintext using theChinese remainder theorem.Hà ¥stadJ become aware of that, this attack is achievable still if the plaintexts are not identical, however the attacker recognize a linear relation among them.Afterward Don Coppersmith enhanced this attack which was low exponent. RSA has the property that the multiplication of two encrypted text is the same to the encryption of the product of the individual plaintexts. That isâ€Å"† since of this multiplicative property achosen ciphertext attackis possible. For example an attacker, who needs to identify the decryption of a ciphertextc=me(modn)possibly will request the owner of the private key to decrypt an innocent appearing ciphertextc =re c (modn)for random rselected by the attacker. For the reason that of the multipli

The Oxford Movement and Jane Eyre :: Jane Eyre Essays

The Oxford Movement and Jane Eyre    The Victorian period from the mid to late 1800's was a time of internal religious turmoil for England. In the Anglican Church there were many different groups competing to define the doctrine and practice of the national religion. The church was politically divided in three general categories following: the High Church, which was the most conservative; the Middle, or Broad Church, which was more liberal; and the Low Church, which was the Evangelical wing of the Anglican Church. Within the High Church there were also differences of opinion on the true nature of the Church as a whole. It is from this conservative branch of the Anglican Church where the men of the  Oxford Movement came. The Oxford Movement began as a movement to reform the Church of England in 1833. The name is taken from the Oxford University fellows who led the movement. Among these men were John Keble, Edward Pusey and John Henry Newman. All of them were extremely loyal to the Anglican Church and were concerned with the government's interference in its affairs. They also were worried about the liberal tendencies of the Evangelicals as a threat to the Church. The Oxford movement thought that they needed to lead the Church back to the "true" church of the fourth century AD; drawing on the patristic writings of St. Augustine, St. Jerome and St. Bernard, their aim was to revive the ritual and mysticism of the early church. The Oxford Movement's beginning is usually associated with July 14, 1833, which was the date John Keble gave his sermon on "National Apostasy." But, more importantly the movement took its roots with the publication of the "Tracts for the Times" by Newman, the first of which was published September 9, 1833, and the last, Tract 90, in 1841. The Tracts meant to remind the English to understand the church as an independent body, not as an appendage to the state. The Tractarians wanted the movement to offer a compromise between Roman Catholicism and Evangelicalism. The Anglicans were distrustful of the Catholic tendency because of the power of the Pope. On the other hand, they did not embrace the evangelical doctrine of universal damnation. The Oxford Movement and its leaders had the best intentions to reform the Church, but it seems to have been most successful in the way it pursued faith as "an impulse of the heart and conscience not an inquiry of the head" (Chadwick 12).

Essay on Elizabeths Strength of Character in Pride and Prejudice

Elizabeth's Strength of Character in Pride and Prejudice  Ã‚        Ã‚   In her novel, Pride and Prejudice, Jane Austen used the character of Elizabeth Bennet to epitomize the harmonious balance between reason and emotion in a woman, making her a truly admirable and attractive character.    Elizabeth's strength of character is emphasized by its contrast with the weak, naive acceptance of Jane's, the instability and excess of Mrs. Bennet's and the blind, weak-willed following of Kitty's. Her strength is also shown in her rejections of the proposals of Mr. Collins and Darcy. Unlike her mother, she does not base her choice of lovers on the financial security they will give her, and has the strength to reject them. This is especially evident in her rejection of Darcy's initial proposal, when she displays a passionate strength in her anger due to her belief that he has willfully prevented Jane and Bingley's marriage and wronged Wickham by refusing to grant him the property that the old Mr. Darcy bequeathed him. In both cases, the suitor is self-assured that his suit will be accepted, and as a result Elizabeth's rejections are amplified by the size of the blows that their egos receive. In Rosings, she does not let Lady Catherine tyrannize her as "the mere satellites of money and rank, she thought she could witness without trepidation." The Lucases and Collinses are submissive to Lady Catherine, with Maria being "frightened almost out of her senses", and it is probable that society as a whole behaves likewise, as Elizabeth suspects she is "the first creature who had ever dared to trifle with such dignified impertinence". She is again presented as a rebel against ideas of class when Lady Catherine pays a visit to her to ensure that ... ...Chrie, D., (ed.), Nineteenth Century Literature Criticism. Detroit, MI: Gale Research Company, 1986. Vo. 13, pp. 53-111. Austen, Jane. Pride and Prejudice. New York: Airmont Books, 1962. "Jane Austen, " Discovering Authors' Modules, http://galenet.gale.com/a/acp/netacgi/nph-brs?d=DAMA&s1=bio&s2=Austen,+Jane&1=50&pg1=DT&pg2=NM&p=1& Moler, Kenneth. Pride and Prejudice: A Study in Artistic Economy. Boston, MA: Twayne Publishers, 1989. "Novels: 'Pride and Prejudice.'" in The British Critic. Vol. XLI, Feb., 1813: 189-90. Southam, B.C., (ed.), Jane Austen: The Critical Heritage. Landon, NY: Routledge & Kegan Paul - Barres & Nobel Inc., 1968. Weldon, Fay. From Letters to Alice: On First Reading Jane Austen. Taplinger Publishing Co. Inc, 1984 in Readings on Jane Austen. Ed. Clarice Swisher. San Diego, CA: Green Haven Press, 1997: 34-41.   

Spanish American War

Analyze the responses to TWO of the following to Secretary of State John Hay’s view that the Spanish American War was â€Å"a splendid little war†; William Jennings Bryan, Theodore Roosevelt, Alfred Thayer Mahan, Emilio Aguinaldo When Secretary of State John Hay stated that the Spanish American War was a â€Å"splendid little war†, he received mixed responses from people such as William Jennings Bryan, Theodore Roosevelt, Alfred Thayer Mahan, and Emilio Aguinaldo. Some people of the Philippines, especially the nationalist leader Emilio Aguinaldo, disagreed with Hay’s statement.They were upset that they were first being denied independence from Spain, and now the United States of America. However, even having fought in the Spanish-American War alongside the Americans, Aguinaldo led bands of guerilla fighters against the U. S. It took three years, and numerous causalities to end the revolt. Theodore Roosevelt, on the other hand, saw potential in the lands co ntrolled by Spain. He ordered a fleet to the Philippines. The American Fleet destroyed the Spanish Fleet. Contrary to the beliefs of Theodore Roosevelt, William Jennings Bryan viciously attacked the idea of American imperialism.He believed that imperialism was wrong, and the United States should stay out of fighting wars for conquest. While many Americans too, questioned imperialism, they saw the new territory, including the Philippines, acquired during the war as an accomplishment. Last but not least, Alfred Thayer Mahan believed that a strong naval power would crucial if a country wanted to become the finest, economically and militarily. A strong military presence would open foreign markets which would lead the United States to become a world power.William Jennings Bryan vigorously attacked the growth of American Imperialism. One positive consequence of the Spanish American war was its effect on the way both Americans and Europeans thought about the United States as a formidable m ilitary power Discuss whether or not US foreign policy from 1890-1914 was principally guided by economic motives. The period after the Civil War saw the development of a booming economy fueled by the industrialization of America, which created the path for a major change in U. S diplomacy policies with the rest of the world.Rather than being an isolated country and keeping with the advice of George Washington to stay neutral concerning any European affairs, the United States became an imperialistic and world power with territories extending across the pacific and very active in European affairs. U. S foreign policy from 1890-1920 was principally guided by economic motives. One of the motives why the U. S foreign policy was principally guided by economic ambition was to protect American interests saved in other countries.Another motive why the U.S foreign policy was principally guided by economic ambition was because the U. S needed new markets on which to sell their surplus of farm and produced goods. One of the motives why the U. S foreign policy was principally guided by economic ambition was because the U. S needed new markets on which to sell their surplus of farm and produced goods. The blessed American soil was mass-producing crops and industries were thriving in production of American goods the markets in the United States were over flowing with goods and the United States needed to extend their sale to other countries’ markets.The four biggest imperialistic powers of the time were Great Britain, France, Germany, and soon to be the United States were all competing to get the advantages of the markets in China, and since China was dealing with their own struggles like corruption, and bad leadership, many countries were taking advantage of the economic gains in the Chinese markets unfairly. Secretary of state John Hay proposed an â€Å"Open Door policy in China† which would guarantee that all nations have a fair chance in the Chinese markets .He proposed this because the United States was still trying to prove itself and if all the countries accepted this policy the United States would ensure having access to the profitable markets. As the U. S economy grew so did ambition and a sense of great nationalism in the United States and the public was calling for more. Compare and contrast the foreign policies of Theodore Roosevelt and Woodrow Wilson toward Latin America Both Theodore Roosevelt and Woodrow Wilson had utilized their own foreign policies toward Latin America that differed from another.Theodore Roosevelt proposed the aggressive, â€Å"Big-Stick† diplomacy in dealing with Latin America, whereas Wilson operated using moral diplomacy as his way of managing foreign affairs. The idea behind Roosevelt’s â€Å"Big-Stick† Policy was ‘speaking softly but carrying a big stick’, meaning that negotiations should conclude peacefully, but rivals should be threatened with the military. Presiden t Roosevelt had made several attempts to build the United States’ reputation as a world power. His policy, however, was unpopular amongst many for breaking the customary â€Å"non-involvement policy† in international politics. T.R was enthusiastic to begin the construction of a canal through the Isthmus of Panama, so the Hay-Pauncefote Treaty of 1901 was passed. This allowed the United States to begin to dig the canal without British involvement. Woodrow Wilson on the other hand, respected other nation’s rights and supported the spread of democracy. Wilson had sent troops over and arranged an arms embargo with the Mexican government. When these troops were detained, he had them occupy Veracruz and war seemed imminent until the Countries of Argentina, Chile and Brazil mediated in the affair. Wilson had also proposed the Johns Act of 1916 which granted U. S.  citizenship to all the inhabitants in Puerto Rico while providing limited self-government. In addition t o this, Wilson kept a supply of marines in Nicaragua and ordered U. S. troops into Haiti in 1915 and the Dominican Republic in 1916.He argued that such intervention was necessary to maintain stability in the region and protect the Panama Canal. Assess the importance of TWO of the following in the US decision to declare war against Spain in 1898: yellow journalism, sinking of the Maine, US business interests, Cuban revolution America's short war with Spain in 1898 was the nation's first step on the pathway to becoming a world power.The U. S. victory brought with it the unintended possession of the Philippines and a vested interest in the politics of the Pacific region that would ultimately lead to conflict with Japan. As an immediate outcome of the war, America found itself embroiled in an insurgency in the Philippines that closely mimicked the conflict in Vietnam over 60 years later. Cuba, a Spanish colony, had been in rebellion since 1895. The brutal Spanish response turned America n sympathies to the Cuban insurgents.The US Battleship Maine arrived in Havana Harbor in January 1898 with a dual mission to protect American interests and present the Spanish with a show of force. At 9:40 PM on the evening of February 15, an explosion ripped the forward hull quickly sending the ship to the bottom of the harbor, killing two hundred sixty-six of the 345 crew members. Investigations started immediately. A US Naval Board of Inquiry attributed the sinking to an external explosion – a conclusion interpreted by many as referring to a mine placed beneath the ship. The finger of blame pointed to Spanish treachery.An anti-Spanish press particularly the â€Å"Yellow Journalism† of the Hearst and Pulitzer newspapers – enflamed American public opinion and raised it to a war-fever pitch. Congress clamored for action. President McKinley reluctantly succumbed to pressure and asked Congress to declare war on April 21. Congress obliged on April 25, 1898. The war lasted only 3 months and cost the U. S. about 400 killed or wounded. The United States gained the Philippines, Puerto Rico and Guam and emerged as a power to be reckoned with on the world stage. Cuba gained independence from Spain.For Spain it was a humiliating defeat. Both her Atlantic and Pacific fleets were sent to the bottom of the sea and with them went Spain's prestige as a world power. In what ways did the United States’ relationship with Japan become more competitive after 1900? In the first two decades of the twentieth century, the relationship between the United States and Japan was marked by increasing tension and corresponding attempts to use diplomacy to reduce the threat of conflict.Each side had territory and interests in Asia that they were concerned the other might threaten. U. S.  treatment of Japanese immigrants, and competition for economic and commercial opportunities in China also heightened tensions. At the same time, each country’s territoria l claims in the Pacific formed the basis for several agreements between the two nations, as each government sought to protect its own strategic and economic interests. Tensions rose over Japanese actions in northeast China and immigration to the United States. In 1905, the Japanese started to establish more formal control over South Manchuria by forcing China to give Japan ownership rights to the South Manchurian Railway.The Japanese used this opening to make further inroads into northeast China, causing the Roosevelt Administration concern that this violated the ideals of free enterprise and the preservation of China’s territorial integrity. Simultaneously, leading Japanese officials expressed frustration with the treatment of Japanese immigrants in the United States. A U. S. -Japanese treaty signed in 1894 had guaranteed the Japanese the right to immigrate to the United States, and to enjoy the same rights in the country as U. S. citizens.In 1906, however, the San Francisco Board of Education enacted a measure to send Japanese and Chinese children to segregated schools. The Government of Japan was outraged by this policy, claiming that it violated the 1894 treaty. In a series of notes exchanged between late 1907 and early 1908, known collectively as the Gentlemen’s Agreement, the U. S. Government agreed to pressure the San Francisco authorities to withdraw the measure, and the Japanese Government promised to restrict the immigration of laborers to the United States.