land cover change constitutes one of main way of alteration of soil organic matter in both quantitative and qualitative terms. the goal of this study was to compare the carbon stock and the isotopic signature of the organic matter in the soil of areas with different land use, covered with forest and grass (pasture). the study area is located at sorocaba, sp, brazil. using un-deformed soil sampl...

Automated signature verification is an important capability when doing fraud detection from high volumes of document images. The challenge is mainly caused by the combination of inherent writer variations and the conscious attention placed by the fraudster on imitating a legitimate signature. Getting good signature references is the first and most important step affecting verification accuracy....

One-time signatures have been known for more than two decades, and have been studied mainly due to their theoretical value. Recent works motivated us to examine the practical use of one-time signatures in high-performance applications. In this paper we describe FMTseq — a signature scheme that merges recent improvements in hash tree traversal into Merkle’s one-time signature scheme. Implementat...

We introduce a new cryptographic problem called time capsule signature. Time capsule signature is a ‘future signature’ that becomes valid from a specific future time t, when a trusted third party (called Time Server) publishes some trapdoor information associated with the time t. In addition, time capsule signature should satisfy the following properties: (1) If the signer wants, she can make h...

Abstract The current development toward quantum attack has shocked our confidence on classical digital signature schemes. As one of the mainstreams post cryptography primitives, hash-based attracted more and concern in both cryptographic research application recent years. goal this paper is to present, classify discuss different solutions for signature. Firstly, discusses progress component sig...

Neta Spiro's paper Combining Grammar-Based and Memory-Based Models of Perception of Time Signature and Phase describes a method for recovering the time signature from a sequence of notes using a combination of grammar-based and memory-based approach. Interestingly, the only information considered in the algorithm is note-length; actual tones are completely ignored. Results are analyzed for 16 m...

In the last lecture, we developed a digital signature scheme for message in {0, 1} n and proved it to be one-time secure. We also showed how to construct a family of Collision-Resistant Hash Functions (CRH) and claimed that they would be useful in constructing one-time secure digital signature schemes for messages in {0, 1} *. The following theorem makes this claim more formally. Theorem 1 If t...

Digital signatures are one of the most fundamental primitives in cryptography. In this paper, three new paradigms are proposed to obtain signatures that are secure against existential forgery under adaptively chosen message attacks (fully-secure, in short), from any weakly-secure signature. These transformations are generic, simple, and provably secure in the standard model. In the first paradi...