Download An Introduction to Mathematical Cryptography by Jeffrey Hoffstein, Jill Pipher, Joseph H. Silverman PDF

By Jeffrey Hoffstein, Jill Pipher, Joseph H. Silverman

This self-contained creation to fashionable cryptography emphasizes the math at the back of the speculation of public key cryptosystems and electronic signature schemes. The publication makes a speciality of those key issues whereas constructing the mathematical instruments wanted for the development and safety research of various cryptosystems. merely easy linear algebra is needed of the reader; ideas from algebra, quantity thought, and likelihood are brought and constructed as required. this article offers an excellent creation for arithmetic and desktop technology scholars to the mathematical foundations of contemporary cryptography. The ebook contains an in depth bibliography and index; supplementary fabrics can be found online.

The e-book covers a number of subject matters which are thought of primary to mathematical cryptography. Key subject matters include:

  • classical cryptographic structures, equivalent to DiffieHellmann key alternate, discrete logarithm-based cryptosystems, the RSA cryptosystem, and electronic signatures;
  • fundamental mathematical instruments for cryptography, together with primality trying out, factorization algorithms, likelihood conception, details concept, and collision algorithms;
  • an in-depth therapy of vital cryptographic recommendations, reminiscent of elliptic curves, elliptic curve and pairing-based cryptography, lattices, lattice-based cryptography, and the NTRU cryptosystem.

The moment variation of An creation to Mathematical Cryptography features a major revision of the fabric on electronic signatures, together with an past advent to RSA, Elgamal, and DSA signatures, and new fabric on lattice-based signatures and rejection sampling. Many sections were rewritten or elevated for readability, in particular within the chapters on info thought, elliptic curves, and lattices, and the bankruptcy of extra themes has been multiplied to incorporate sections on electronic money and homomorphic encryption. a variety of new workouts were included.

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Extra info for An Introduction to Mathematical Cryptography

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8 The first known recorded description of the fast powering algorithm appeared in India before 200 BC, while the first reference outside India dates to around 950 AD. See [66, page 441] for a brief discussion and further references. 26 1. An Introduction to Cryptography Step 3. Compute g A (mod N ) using the formula g A = g A0 +A1 ·2+A2 ·2 2 +A3 ·23 +···+Ar ·2r 2 3 r = g A0 · (g 2 )A1 · (g 2 )A2 · (g 2 )A3 · · · (g 2 )Ar A1 A2 A3 Ar 0 ≡ aA 0 · a1 · a2 · a3 · · · ar (mod N ). 4) Note that the quantities a0 , a1 , .

Your computer sees the list of bits 0100001001100101011001000010000001100010011101010110011100101110. Definition. An encoding scheme is a method of converting one sort of data into another sort of data, for example, converting text into numbers. The distinction between an encoding scheme and an encryption scheme is one 15 A bit is a 0 or a 1. The word “bit” is an abbreviation for binary digit. is an acronym for American Standard Code for Information Interchange. 16 ASCII 40 1. An Introduction to Cryptography ( ) , .

4) Note that the quantities a0 , a1 , . . , ar were computed in Step 2. 4) can be computed by looking up the values of the ai ’s whose exponent Ai is 1 and then multiplying them together. This requires at most another r multiplications. Running Time. It takes at most 2r multiplications modulo N to compute g A . Since A ≥ 2r , we see that it takes at most 2 log2 (A) multiplications9 modulo N to compute g A . Thus even if A is very large, say A ≈ 21000 , it is easy for a computer to do the approximately 2000 multiplications needed to calculate 2A modulo N .

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