This is the same test as rsa-pss-sha1-salt20.pem, except the public key's algorithm identifier has been changed from rsaEncryption (1.2.840.113549.1.1.1) to rsaPss (1.2.840.113549.1.1.10). Note that the PSS parameters have been encoded as NULL which is incorrect. $ 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 :rsassaPss 16:d=2 hl=2 l= 0 prim: NULL 18:d=1 hl=3 l= 141 prim: BIT STRING -----BEGIN PUBLIC KEY----- MIGfMA0GCSqGSIb3DQEBCgUAA4GNADCBiQKBgQClbkoOcBAXWJpRh9x+qEHRVvLsDjatUqRN/rH mH3rZkdjFEFb/7bFitMDyg6EqiKOU3/Umq3KRy7MHzqv84LHf1c2VCAltWyuLbfXWce9jd8CSHL I8Jwpw4lmOb/idGfEFrMLT8Ms18pKA4Thrb2TE7yLh4fINDOjP+yJJvZohNwIDAQAB -----END PUBLIC KEY----- $ openssl asn1parse -i < [ALGORITHM] 0:d=0 hl=2 l= 13 cons: SEQUENCE 2:d=1 hl=2 l= 9 prim: OBJECT :rsassaPss 13:d=1 hl=2 l= 0 cons: SEQUENCE -----BEGIN ALGORITHM----- MA0GCSqGSIb3DQEBCjAA -----END ALGORITHM----- -----BEGIN DATA----- zch9oiPXht87ReC7vHITJtHuKvgGzDFUdcxvDZxm4bYjcdRc4jkuGskoRMMQEC8Vag2NUsH0xAu jqmUJV4bLdpdXplY7qVj+0LzJhOi1F6PV9RWyO4pB50qoZ2k/kN+wYabobfqu5kRywA5fIJRXKc vr538Gznjgj0CY+6QfnWGTwDF+i2DUtghKy0LSnjgIo7w3LYXjMRcPy/fMctC3HClmSLOk0Q9BY pXQgHqmJcqydE/Z6o/SI8QlNwKYKL0WvgJUbxMP0uM7k20mduCK7RtzMYt1CgFn0A== -----END DATA----- $ openssl asn1parse -i < [SIGNATURE] 0:d=0 hl=3 l= 129 prim: BIT STRING -----BEGIN SIGNATURE----- A4GBAJB0MI+1mOlwGyKUOI5S+XH6rCtgpRRa8YXfUoe17SiH5Xzn/UTchjTkB8jg5DYLwibz7CJ /nZ5UY46NMfUFEhXfbrucL5V5qndZijj5FLW5wb2DxOL584Kg0Ko1Qv/uZZhKYBvGnrKN6yfcoS yCwtTD9mzVAPH/K5lNik4wy7M8 -----END SIGNATURE-----