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RSA-PSS is a signature scheme based on the RSA cryptosystem and provides increased security assurance. It was added in version 2.1 of PKCS #1[1].

PSS refers to Probabilistic Signature Scheme by Mihir Bellare and Phillip Rogaway on which RSA-PSS is based.


RSA-PSS is based on the PSS design with the e-th power function f(x) = x^e mod~n \,. The exponent e is a parameter of the scheme and is an input of the key generation


  1. PKCS #1

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