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This test exercises using a different hash function parameter to the mask gen
function (SHA-256 for the hash, but SHA-512 for the MGF1 hash).
This test data was constructed manually by calling signing functions from
OpenSSL code.
It constructs an RSASSA-PSS signature using:
* Key with modulus 1024 bit
* Salt length 33 bytes
* Digest function of SHA-256
* Mask gen function of MGF1 with SHA-512
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQClbkoOcBAXWJpRh9x+qEHRVvLsDjatUqRN/rH
mH3rZkdjFEFb/7bFitMDyg6EqiKOU3/Umq3KRy7MHzqv84LHf1c2VCAltWyuLbfXWce9jd8CSHL
I8Jwpw4lmOb/idGfEFrMLT8Ms18pKA4Thrb2TE7yLh4fINDOjP+yJJvZohNwIDAQAB
-----END PUBLIC KEY-----
$ openssl asn1parse -i < [PUBLIC KEY]
0:d=0 hl=3 l= 159 cons: SEQUENCE
3:d=1 hl=2 l= 13 cons: SEQUENCE
5:d=2 hl=2 l= 9 prim: OBJECT :rsaEncryption
16:d=2 hl=2 l= 0 prim: NULL
18:d=1 hl=3 l= 141 prim: BIT STRING
-----BEGIN ALGORITHM-----
MEEGCSqGSIb3DQEBCjA0oA8wDQYJYIZIAWUDBAIBBQChHDAaBgkqhkiG9w0BAQgwDQYJYIZIAWU
DBAIDBQCiAwIBIQ==
-----END ALGORITHM-----
$ openssl asn1parse -i < [ALGORITHM]
0:d=0 hl=2 l= 65 cons: SEQUENCE
2:d=1 hl=2 l= 9 prim: OBJECT :rsassaPss
13:d=1 hl=2 l= 52 cons: SEQUENCE
15:d=2 hl=2 l= 15 cons: cont [ 0 ]
17:d=3 hl=2 l= 13 cons: SEQUENCE
19:d=4 hl=2 l= 9 prim: OBJECT :sha256
30:d=4 hl=2 l= 0 prim: NULL
32:d=2 hl=2 l= 28 cons: cont [ 1 ]
34:d=3 hl=2 l= 26 cons: SEQUENCE
36:d=4 hl=2 l= 9 prim: OBJECT :mgf1
47:d=4 hl=2 l= 13 cons: SEQUENCE
49:d=5 hl=2 l= 9 prim: OBJECT :sha512
60:d=5 hl=2 l= 0 prim: NULL
62:d=2 hl=2 l= 3 cons: cont [ 2 ]
64:d=3 hl=2 l= 1 prim: INTEGER :21
-----BEGIN DATA-----
VGVzdCBtZXNzYWdlIHRvIGJlIHNpZ25lZC4uLg==
-----END DATA-----
-----BEGIN SIGNATURE-----
A4GBAFob0HSC5uuTqKu4J/lj+5bDa+Hhij4H3klWnvt6Yc+wwPza7/UC4lgGGyvZqD32RUEdt7v
Z14qqYNk53b5aj4C2gBMvLzV7Pay4mmQM4DSWa5JHMxTILqE3DDqihrbMcBw2q3XAsLcjeqLWQ9
yp8tfnV21h98qsCLtErrxZWHRr
-----END SIGNATURE-----
$ openssl asn1parse -i < [SIGNATURE]
0:d=0 hl=3 l= 129 prim: BIT STRING
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