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The key, message, and signature come from:
http://csrc.nist.gov/groups/STM/cavp/documents/dss/186-2rsatestvectors.zip (SigVerPSS_186-3.rsp)
(The algorithm DER was synthesized to match, and the signature wrapped in a BIT STRING).
It uses an RSA key with modulus length of 1024 bits, PSS padding,
SHA-256 as the digest, MGF1 with SHA-256, and salt length of 10.
$ openssl asn1parse -i < [PUBLIC KEY]
0:d=0 hl=3 l= 157 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= 139 prim: BIT STRING
-----BEGIN PUBLIC KEY-----
MIGdMA0GCSqGSIb3DQEBAQUAA4GLADCBhwKBgQC+SZtefwbIP6ApPjFGXI62tYr5ILrlKntbm/6
3qnLbEmQRLrP9Qx0xoqflCUFWaSlJSg6JHtVhORi0tRsNH7l3g7Jqz30POEz7NfTSgk9d04BiOi
a/GAtjlhxhnc2yDK5AbyL24nbICjcllJDP63LBpxqE8YRtMwh3uj4xAeycewIBEQ==
-----END PUBLIC KEY-----
$ 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 :sha256
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 :0A
-----BEGIN ALGORITHM-----
MEEGCSqGSIb3DQEBCjA0oA8wDQYJYIZIAWUDBAIBBQChHDAaBgkqhkiG9w0BAQgwDQYJYIZIAWU
DBAIBBQCiAwIBCg==
-----END ALGORITHM-----
-----BEGIN DATA-----
x/UnD8pyX5vRn1GajXzKPMXAeQJAKfO65RD5sCFA/iOJCOT2wY8HqJxofIaEZpsfHbK6+SUaPIK
frMtJMIThbsnijViGgHSl1iIWZ91uUo0W/iyfPbTPr2xNzoyEOa84zqqqnOLsrnvI9KWlXjv5bf
nNV1xPnLMnlRuM3+QIcWg=
-----END DATA-----
$ openssl asn1parse -i < [SIGNATURE]
0:d=0 hl=3 l= 129 prim: BIT STRING
-----BEGIN SIGNATURE-----
A4GBABHhafL9QLB2Qbl2iiqxmWX7bCfxD88DI/zG0S608cBrMw3aoepQRAevop3p6+A3T+nR59D
/vV/Bzzo0RuQUVBXSqyT3ibNGTFxDola7wdaSz38EgB2sW7QBpKA6t9VyioYMGeGk3Hl8pULIID
zsLmAesMUfVn8u2gIrC5693u76
-----END SIGNATURE-----
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