This book constitutes the refereed proceedings of the Cryptographers' Track at the RSA Conference 2011, CT-RSA 2011, held in San Francisco, CA, USA, in February 2011. The 24 revised full papers presented together with 1 invited lecture were carefully reviewed and selected from 79 submissions. The papers are organized in topical sections on secure two-party computation, cryptographic primitives, side channel attacks, authenticated key agreement, proofs of security, block ciphers, security notions, public-key encryption, crypto tools and parameters, and digital signatures.

This book constitutes the refereed proceedings of the Cryptographer's Track at the RSA Conference 2017, CT-RSA 2017, held in San Francisco, CA, USA, in February 2017. The 25 papers presented in this volume were carefully reviewed and selected from 77 submissions. CT-RSA has become a major publication venue in cryptography. It covers a wide variety of topics from public-key to symmetric key cryptography and from cryptographic protocols to primitives and their implementation security. This year selected topics such as cryptocurrencies and white-box cryptography were added to the call for papers.

This book constitutes the refereed proceedings of the Cryptographers' Track at the RSA Conference 2012, CT-RSA 2012, held in San Francisco, CA, USA, in February/March 2012. The 26 revised full papers presented were carefully reviewed and selected from 113 submissions. The papers are organized in topical sections on side channel attacks, digital signatures, public-key encryption, cryptographic protocols, secure implementation methods, symmetric key primitives, and secure multiparty computation.

This book constitutes the refereed proceedings of the Cryptographer's Track at the RSA Conference 2021, CT-RSA 2021, held in San Francisco, CA, USA, in May 2021.* The 27 full papers presented in this volume were carefully reviewed and selected from 100 submissions. CT-RSA is the track devoted to scientific papers on cryptography, public-key to symmetric-key cryptography and from crypto-graphic protocols to primitives and their implementation security. *The conference was held virtually.

This book constitutes the refereed proceedings of the Cryptographer's Track at the RSA Conference 2016, CT-RSA 2016, held in San Francisco, CA, USA, in February/March 2016. The 26 papers presented in this volume were carefully reviewed and selected from 76 submissions. The focus of the track is on following subjects: secure key exchange schemes, authenticated encryption, searchable symmetric encryption, digital signatures with new functionality, secure multi party computation, how to verify procedures, side-channel attacks on elliptic curve cryptography, hardware attacks and security, structure-preserving signatures, lattice cryptography, cryptanalysis of symmetric key encryption, message authentication code and PRF-security, and security of public key encryption.

This book constitutes the refereed proceedings of the Cryptographers' Track at the RSA Conference 2013, CT-RSA 2013, held in San Francisco, CA, USA, in February/March 2013. The 25 revised full papers presented were carefully reviewed and selected from 89 submissions. The papers are grouped into topical sections covering: side channel attacks, digital signatures, public-key encryption, cryptographic protocols, secure implementation methods, symmetric key primitives, and identity-based encryption.

This book constitutes the refereed proceedings of the Cryptographer's Track at the RSA Conference 2015, CT-RSA 2015, held in San Francisco, CA, USA, in April 2015. The 26 papers presented in this volume were carefully reviewed and selected from 111 submissions. The focus of the track is on following subjects: timing attacks, design and analysis of block ciphers, attribute and identity based encryption, membership, secure and efficient implementation of AES based Cryptosystems, chosen ciphertext attacks in theory and practice, algorithms for solving hard problems, constructions of hash functions and message authentication codes, secure multiparty computation, authenticated encryption, detecting and tracing malicious activities, implentation attacks on exponentiation algorithms and homomorphic encryption and its applications.