Probabilistic Signature Scheme (PSS) is a
cryptographic
Cryptography, or cryptology (from "hidden, secret"; and ''graphein'', "to write", or '' -logia'', "study", respectively), is the practice and study of techniques for secure communication in the presence of adversarial behavior. More gen ...
signature scheme designed by
Mihir Bellare and
Phillip Rogaway
Phillip Rogaway (also referred to as Phil Rogaway) is an American cryptographer and former professor of computer science at the University of California, Davis. He graduated from Beverly Hills High School, and later earned a BA in computer scie ...
.
RSA-PSS is an adaptation of their work and is standardized as part of
PKCS#1 v2.1. In general, RSA-PSS should be used as a replacement for RSA-PKCS#1 v1.5.
Design
PSS was specifically developed to allow modern methods of security analysis to prove that its security directly relates to that of the
RSA problem
In cryptography, the RSA problem summarizes the task of performing an RSA private-key operation given only the public key. The RSA algorithm raises a ''message'' to an '' exponent'', modulo a composite number ''N'' whose factors are not known. ...
. There is no such proof for the traditional PKCS#1 v1.5 scheme.
Implementations
*
OpenSSL
OpenSSL is a software library for applications that provide secure communications over computer networks against eavesdropping, and identify the party at the other end. It is widely used by Internet servers, including the majority of HTTPS web ...
*
wolfSSL
References
[
{{cite web
, url=http://grouper.ieee.org/groups/1363/P1363a/contributions/pss-submission.pdf
, title=PSS: Provably Secure Encoding Method for Digital Signatures
, first1=Mihir , last1 = Bellare , first2 = Phillip , last2 = Rogaway
, archiveurl = https://web.archive.org/web/20170810025803/http://grouper.ieee.org/groups/1363/P1363a/contributions/pss-submission.pdf
, archivedate = 2017-08-10
]
External links
Raising the standard for RSA signatures: RSA-PSSRFC 4056: Use of the RSASSA-PSS Signature Algorithm in Cryptographic Message Syntax (CMS)RFC 5756: Updates for RSAES-OAEP and RSASSA-PSS Algorithm ParametersRFC 8017: PKCS #1: RSA Cryptography Specifications Version 2.2
Cryptography
Digital signature schemes