Add RSA-PSS signature algorithm support

[WorldThirteen]

No description provided.

[microshine]

I have implemented support for the RSA-PSS mechanism with parameters for signing and verifying PDF documents. The update also includes tests for algorithm conversion, as well as signing and verifying signatures for various RSA mechanisms:

• RSASSA-PKCS1-v1_5: SHA-1, SHA-256, SHA-384, SHA-512
• RSA-PSS: SHA-1, SHA-256, SHA-384, SHA-512

When signing a document, identifiers for the RSA-PSS algorithm are formed in the CMS block as follows:

SEQUENCE (2 elem)
  OBJECT IDENTIFIER 1.2.840.113549.1.1.10 rsaPSS (PKCS #1)
  SEQUENCE (3 elem)
    [0] (1 elem)
      SEQUENCE (2 elem)
        OBJECT IDENTIFIER 2.16.840.1.101.3.4.2.3 sha-512 (NIST Algorithm)
        NULL
    [1] (1 elem)
      SEQUENCE (2 elem)
        OBJECT IDENTIFIER 1.2.840.113549.1.1.8 pkcs1-MGF (PKCS #1)
        SEQUENCE (2 elem)
          OBJECT IDENTIFIER 2.16.840.1.101.3.4.2.3 sha-512 (NIST Algorithm)
          NULL
    [2] (1 elem)
      INTEGER 64

This ensures proper identification and application of the RSA-PSS algorithm during the signing process.