Signed through an intermediate without the correct key usage $ openssl asn1parse -i < [OCSP RESPONSE] 0:d=0 hl=4 l= 750 cons: SEQUENCE 4:d=1 hl=2 l= 1 prim: ENUMERATED :00 7:d=1 hl=4 l= 743 cons: cont [ 0 ] 11:d=2 hl=4 l= 739 cons: SEQUENCE 15:d=3 hl=2 l= 9 prim: OBJECT :Basic OCSP Response 26:d=3 hl=4 l= 724 prim: OCTET STRING 0:d=0 hl=4 l= 720 cons: SEQUENCE 4:d=1 hl=3 l= 135 cons: SEQUENCE 7:d=2 hl=2 l= 35 cons: cont [ 1 ] 9:d=3 hl=2 l= 33 cons: SEQUENCE 11:d=4 hl=2 l= 31 cons: SET 13:d=5 hl=2 l= 29 cons: SEQUENCE 15:d=6 hl=2 l= 3 prim: OBJECT :commonName 20:d=6 hl=2 l= 22 prim: PRINTABLESTRING :Test False OCSP Signer 44:d=2 hl=2 l= 15 prim: GENERALIZEDTIME :20160304164002Z 61:d=2 hl=2 l= 79 cons: SEQUENCE 63:d=3 hl=2 l= 77 cons: SEQUENCE 65:d=4 hl=2 l= 56 cons: SEQUENCE 67:d=5 hl=2 l= 7 cons: SEQUENCE 69:d=6 hl=2 l= 5 prim: OBJECT :sha1 76:d=5 hl=2 l= 20 prim: OCTET STRING [HEX DUMP]:02FF75DA24DE8ADD150FAB689DCCE6E6636D0901 98:d=5 hl=2 l= 20 prim: OCTET STRING [HEX DUMP]:7735ACB4DFE7B9DC8259381B7EEDF0882B973534 120:d=5 hl=2 l= 1 prim: INTEGER :03 123:d=4 hl=2 l= 0 prim: cont [ 0 ] 125:d=4 hl=2 l= 15 prim: GENERALIZEDTIME :20160304164002Z 142:d=1 hl=2 l= 13 cons: SEQUENCE 144:d=2 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 155:d=2 hl=2 l= 0 prim: NULL 157:d=1 hl=3 l= 129 prim: BIT STRING 289:d=1 hl=4 l= 431 cons: cont [ 0 ] 293:d=2 hl=4 l= 427 cons: SEQUENCE 297:d=3 hl=4 l= 423 cons: SEQUENCE 301:d=4 hl=4 l= 272 cons: SEQUENCE 305:d=5 hl=2 l= 3 cons: cont [ 0 ] 307:d=6 hl=2 l= 1 prim: INTEGER :02 310:d=5 hl=2 l= 1 prim: INTEGER :02 313:d=5 hl=2 l= 13 cons: SEQUENCE 315:d=6 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 326:d=6 hl=2 l= 0 prim: NULL 328:d=5 hl=2 l= 18 cons: SEQUENCE 330:d=6 hl=2 l= 16 cons: SET 332:d=7 hl=2 l= 14 cons: SEQUENCE 334:d=8 hl=2 l= 3 prim: OBJECT :commonName 339:d=8 hl=2 l= 7 prim: PRINTABLESTRING :Test CA 348:d=5 hl=2 l= 30 cons: SEQUENCE 350:d=6 hl=2 l= 13 prim: UTCTIME :160304214002Z 365:d=6 hl=2 l= 13 prim: UTCTIME :260302214002Z 380:d=5 hl=2 l= 33 cons: SEQUENCE 382:d=6 hl=2 l= 31 cons: SET 384:d=7 hl=2 l= 29 cons: SEQUENCE 386:d=8 hl=2 l= 3 prim: OBJECT :commonName 391:d=8 hl=2 l= 22 prim: PRINTABLESTRING :Test False OCSP Signer 415:d=5 hl=3 l= 159 cons: SEQUENCE 418:d=6 hl=2 l= 13 cons: SEQUENCE 420:d=7 hl=2 l= 9 prim: OBJECT :rsaEncryption 431:d=7 hl=2 l= 0 prim: NULL 433:d=6 hl=3 l= 141 prim: BIT STRING 577:d=4 hl=2 l= 13 cons: SEQUENCE 579:d=5 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 590:d=5 hl=2 l= 0 prim: NULL 592:d=4 hl=3 l= 129 prim: BIT STRING -----BEGIN OCSP RESPONSE----- MIIC7goBAKCCAucwggLjBgkrBgEFBQcwAQEEggLUMIIC0DCBh6EjMCExHzAdBgNVBAMTFlRlc3Q gRmFsc2UgT0NTUCBTaWduZXIYDzIwMTYwMzA0MTY0MDAyWjBPME0wODAHBgUrDgMCGgQUAv912i Teit0VD6tonczm5mNtCQEEFHc1rLTf57ncglk4G37t8IgrlzU0AgEDgAAYDzIwMTYwMzA0MTY0M DAyWjANBgkqhkiG9w0BAQUFAAOBgQBUbTwYMCKST8shnSN4BIA6rdPZn+kUZF2hEWLqY7A0Ru1H OaAd4idxtPIfb7nzydt3gXuaI1lgjT5F9Choe99e20X2+xkZpnnzoN5OKeUhiK08I8azqGHsxfC hWlrAASXdA7iwld5dGbw+RlNHB4nrAuknAUdTHFGdiP7x7TBhNaCCAa8wggGrMIIBpzCCARCgAw IBAgIBAjANBgkqhkiG9w0BAQUFADASMRAwDgYDVQQDEwdUZXN0IENBMB4XDTE2MDMwNDIxNDAwM loXDTI2MDMwMjIxNDAwMlowITEfMB0GA1UEAxMWVGVzdCBGYWxzZSBPQ1NQIFNpZ25lcjCBnzAN BgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEApn44UGWdpvHcClqexVMmT8yIGg8DjLaZzDMT4YktTYs Df011huQhUoNNOHbVR+zveTORiw+J+Xe2fvz10E35Fp8hrdc2BUXPywcIwGMBAqw4Xfn065B0it sUg8AYm4yPTL0/TPXFKj4LF5TbGdOlYD/hQgzehtvsPLEfCPLy6IsCAwEAATANBgkqhkiG9w0BA QUFAAOBgQCU24MnAyNiaNesmlQRj9sZSBERuSddMWKsLlXBMs4k3iVJBq92wxOcj3YCk84dFttM nj5hEKVnVxzHDTSGjOWLvzJtj7y8CjQ2CS1xkB1c1xrnsYXjQLqWSSIwUFIxC926BsTMIU7zOs/ mjO7GAm4CJhP9MYGPwv3Yy4g66I+HUA== -----END OCSP RESPONSE----- $ openssl asn1parse -i < [CA CERTIFICATE] 0:d=0 hl=4 l= 408 cons: SEQUENCE 4:d=1 hl=4 l= 257 cons: SEQUENCE 8:d=2 hl=2 l= 3 cons: cont [ 0 ] 10:d=3 hl=2 l= 1 prim: INTEGER :02 13:d=2 hl=2 l= 1 prim: INTEGER :00 16:d=2 hl=2 l= 13 cons: SEQUENCE 18:d=3 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 29:d=3 hl=2 l= 0 prim: NULL 31:d=2 hl=2 l= 18 cons: SEQUENCE 33:d=3 hl=2 l= 16 cons: SET 35:d=4 hl=2 l= 14 cons: SEQUENCE 37:d=5 hl=2 l= 3 prim: OBJECT :commonName 42:d=5 hl=2 l= 7 prim: PRINTABLESTRING :Test CA 51:d=2 hl=2 l= 30 cons: SEQUENCE 53:d=3 hl=2 l= 13 prim: UTCTIME :160304214002Z 68:d=3 hl=2 l= 13 prim: UTCTIME :260302214002Z 83:d=2 hl=2 l= 18 cons: SEQUENCE 85:d=3 hl=2 l= 16 cons: SET 87:d=4 hl=2 l= 14 cons: SEQUENCE 89:d=5 hl=2 l= 3 prim: OBJECT :commonName 94:d=5 hl=2 l= 7 prim: PRINTABLESTRING :Test CA 103:d=2 hl=3 l= 159 cons: SEQUENCE 106:d=3 hl=2 l= 13 cons: SEQUENCE 108:d=4 hl=2 l= 9 prim: OBJECT :rsaEncryption 119:d=4 hl=2 l= 0 prim: NULL 121:d=3 hl=3 l= 141 prim: BIT STRING 265:d=1 hl=2 l= 13 cons: SEQUENCE 267:d=2 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 278:d=2 hl=2 l= 0 prim: NULL 280:d=1 hl=3 l= 129 prim: BIT STRING -----BEGIN CA CERTIFICATE----- MIIBmDCCAQGgAwIBAgIBADANBgkqhkiG9w0BAQUFADASMRAwDgYDVQQDEwdUZXN0IENBMB4XDTE 2MDMwNDIxNDAwMloXDTI2MDMwMjIxNDAwMlowEjEQMA4GA1UEAxMHVGVzdCBDQTCBnzANBgkqhk iG9w0BAQEFAAOBjQAwgYkCgYEAxN8IR7ey6jTVUyS6kkCqt2x9/mxnRz77Py6Kwdm3P9jqIwqrC RuqAXfC5QcyeyUaXKCc49bmL7cy64UowTrnIjyqiYOX0VO6t3ZdKcy2/8U2uwdL5oZPlBkpI6mU 7vl+3rKbKkNPNPLv8apwFF1zIHUm1tund152PlMAWQu6rmUCAwEAATANBgkqhkiG9w0BAQUFAAO BgQCYaWdjhx0ARGhs1Dj1N6RXIf0U669nJcx0XkuC/yL5Ji16cjI1s76arVjGK7OPZ011x4/gNM RLj31wyxKsfg3qQdlYkVl89CwtA+KxghQoRhD8cSWY1aOQcm4hM11HE5t5VyNbheSOBVwoOb8wO cgZFERfCNWbcx2a3WYVJCGoUw== -----END CA CERTIFICATE----- $ openssl asn1parse -i < [CERTIFICATE] 0:d=0 hl=4 l= 410 cons: SEQUENCE 4:d=1 hl=4 l= 259 cons: SEQUENCE 8:d=2 hl=2 l= 3 cons: cont [ 0 ] 10:d=3 hl=2 l= 1 prim: INTEGER :02 13:d=2 hl=2 l= 1 prim: INTEGER :03 16:d=2 hl=2 l= 13 cons: SEQUENCE 18:d=3 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 29:d=3 hl=2 l= 0 prim: NULL 31:d=2 hl=2 l= 18 cons: SEQUENCE 33:d=3 hl=2 l= 16 cons: SET 35:d=4 hl=2 l= 14 cons: SEQUENCE 37:d=5 hl=2 l= 3 prim: OBJECT :commonName 42:d=5 hl=2 l= 7 prim: PRINTABLESTRING :Test CA 51:d=2 hl=2 l= 30 cons: SEQUENCE 53:d=3 hl=2 l= 13 prim: UTCTIME :160304214002Z 68:d=3 hl=2 l= 13 prim: UTCTIME :260302214002Z 83:d=2 hl=2 l= 20 cons: SEQUENCE 85:d=3 hl=2 l= 18 cons: SET 87:d=4 hl=2 l= 16 cons: SEQUENCE 89:d=5 hl=2 l= 3 prim: OBJECT :commonName 94:d=5 hl=2 l= 9 prim: PRINTABLESTRING :Test Cert 105:d=2 hl=3 l= 159 cons: SEQUENCE 108:d=3 hl=2 l= 13 cons: SEQUENCE 110:d=4 hl=2 l= 9 prim: OBJECT :rsaEncryption 121:d=4 hl=2 l= 0 prim: NULL 123:d=3 hl=3 l= 141 prim: BIT STRING 267:d=1 hl=2 l= 13 cons: SEQUENCE 269:d=2 hl=2 l= 9 prim: OBJECT :sha1WithRSAEncryption 280:d=2 hl=2 l= 0 prim: NULL 282:d=1 hl=3 l= 129 prim: BIT STRING -----BEGIN CERTIFICATE----- MIIBmjCCAQOgAwIBAgIBAzANBgkqhkiG9w0BAQUFADASMRAwDgYDVQQDEwdUZXN0IENBMB4XDTE 2MDMwNDIxNDAwMloXDTI2MDMwMjIxNDAwMlowFDESMBAGA1UEAxMJVGVzdCBDZXJ0MIGfMA0GCS qGSIb3DQEBAQUAA4GNADCBiQKBgQCynU7qbknY0uuN2uYvVj9/UeLaZ+GTuIICagyaSvwhDdEFI ieSELYv5c3TlrIzAzuMlx78eOuhyxyL5SqDe1+YrD4tsHTMoWhSsmjRmKHpxfVScPwgBvnZ3i5d jS/iLKlvoTnH8qPE2QC+B2GgoU8HFEaVg5jI1NACo5gh75ZAawIDAQABMA0GCSqGSIb3DQEBBQU AA4GBAHSL52wcNMvGbcbSI3fZd9ckcx2Kgor0/FZOcjWFaI877E9ok7TGk1uwy5QsTcRZdEuCsl 3Ph9kpZYkiB6JIGrEzvmE5Nmv8VmYtEAX4F1JX6WPETlRR95fA4D4WmHNb2bxBy8bP9wLpced2V 42JEeS36VZs/yhLupvaLx9PcRwM -----END CERTIFICATE-----