[PDF] Top 20 IAA : Información y actualidad astronómica (25)

... be faster than 3-descent in the previous section, the naïve approach for basis generation of E [ 3 n ] incurs a substantial cost that seems unavoidable at key ...at key decompression. For a very ... See full document

... Some works in the literature have studied algorithms for modular arithmetic based on non-redundant representations. The basic idea of these methods is to split modular arithmetic operations in two or more parts, ... See full document

... ordinary isogeny-graph based cryptosystems of Couveignes and Rostovtsev–Stolbunov, long dismissed as impracti- ...accelerate key exchange in this framework, and explore the problem of ... See full document

... is based on the hardness of constructing a smooth-degree isogeny, between two supersingular elliptic curves defined over a finite field ...Supersingular Isogeny Diffie-Hellman ...lar Isogeny ... See full document

... Due to the novelty of the SIDH protocol only a few software and hardware implementations have so far been reported. Several of these implementations use different elliptic curve parameters, which makes it difficult to ... See full document

... supersingular isogeny Diffie-Hellman (SIDH) key-exchange protocol which is one of the more recent contenders in the post-quantum public-key ...approaches based on Montgomery reduction for such ... See full document

... The isogeny-based cryptosystem became increasingly popular after the in- troduction of SIDH key exchange by De Feo and Jao in 2011 ...cryptosystem based on isogenies on ordinary curves was ... See full document

... curve isogeny based cryptosystems have have emerged as candidates for post-quantum cryptogra- phy, including supersingular isogeny Diffie-Hellman (SIDH) and commutative supersingular ... See full document

... This paper describes and compares a variety of algorithms for secure transmission of information via open communica- tion channels based on the discrete logarithm problem that do not require search for a generator ... See full document

... The large volume of personal and sensitive information currently held in comput- erized data banks and transmitted over telephone lines makes encryption increasingly important. In recognition of the fact that efficient, ... See full document

... Another simplification can be made regarding the secret affine transformations S and T . First of all, we neglect linear terms, as we do not use them and they also never interfere with the coefficients of quadratic ... See full document

... Both stages of the overall parallel multiplier will be tested with both key sizes. Having the same structure with larger word lengths will show to be a drastic in- crease in area. The 233-bit multiplication and ... See full document

... private key for an access tree T (for KP- ABE schemes) or a set S of attributes (for CP-ABE schemes) can compute a new private key for a more restrictive access tree than T or a subset of ...private ... See full document

... hour 17 minutes. The experiments were run using a MacBook Pro with 2.6 GHz Intel Core i5 processor, 16 GB 1600 MHz DDR3 memory, with a python script running 4 parallel processes and using Sage version 8.1. See Section ... See full document

... Supersingular Isogeny Gap DH ...supersingular isogeny computational DH (SI-CDH) problem with access to decision degree oracle, which determines whether two supersingular curves are isogenous of some ... See full document

... Identity-based encryption (IBE) [28] enables a user to encrypt to a recipient’s identity id (e.g., an email or phone number), and decryption can be done using a user secret key for id, obtained by a trusted ... See full document

... decisional isogeny problem, which we call the Key Validation Problem in anticipation of its role in the next section, and which we show is equivalent to the problem ( c 2 ) ... See full document

... is based on the second ...Public Key Infrastructure (PKI) made the use of Identity Based cryptographic schemes one of the most popular cryptosystems in such ...private key from PKG ... See full document

... public key encryption methods, such as RSA or El-Gamal [1] cannot provide suitable encryption rates, while security of these algorithms relies on the difficulty of quickly factorizing large numbers or solving the ... See full document

... needs faster and secure service. Usually Image Compression Algorithms are not working ...Conventional Compression and its Algorithms might not be able to run ...image compression algorithm and ... See full document