Changes between 0.9.6 and 0.9.7 [xx XXX 2000]
+ *) New nonce behavior. The return value of OCSP_check_nonce() now
+ reflects the various checks performed. Applications can decide
+ whether to tolerate certain situations such as an absent nonce
+ in a response when one was present in a request: the ocsp application
+ just prints out a warning. New function OCSP_add1_basic_nonce()
+ this is to allow responders to include a nonce in a response even if
+ the request is nonce-less.
+ [Steve Henson]
+
*) Use the cached encoding of an X509_NAME structure rather than
copying it. This is apparently the reason for the libsafe "errors"
but the code is actually correct.
if (!noverify)
{
- if (req && (OCSP_check_nonce(req, bs) <= 0))
+ if (req && ((i = OCSP_check_nonce(req, bs)) <= 0))
{
- BIO_printf(bio_err, "Nonce Verify error\n");
- goto end;
+ if (i == -1)
+ BIO_printf(bio_err, "WARNING: no nonce in response\n");
+ else
+ {
+ BIO_printf(bio_err, "Nonce Verify error\n");
+ goto end;
+ }
}
i = OCSP_basic_verify(bs, verify_other, store, verify_flags);
OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid);
int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len);
+int OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len);
int OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs);
int OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req);
/* Error codes for the OCSP functions. */
/* Function codes. */
-#define OCSP_F_ASN1_STRING_ENCODE 106
-#define OCSP_F_BASIC_RESPONSE_NEW 100
-#define OCSP_F_BASIC_RESPONSE_VERIFY 101
-#define OCSP_F_CERT_ID_NEW 102
-#define OCSP_F_CERT_STATUS_NEW 103
-#define OCSP_F_D2I_OCSP_NONCE 109
-#define OCSP_F_OCSP_BASIC_ADD1_STATUS 118
-#define OCSP_F_OCSP_BASIC_SIGN 119
-#define OCSP_F_OCSP_BASIC_VERIFY 113
-#define OCSP_F_OCSP_CHECK_DELEGATED 117
-#define OCSP_F_OCSP_CHECK_IDS 114
-#define OCSP_F_OCSP_CHECK_ISSUER 115
-#define OCSP_F_OCSP_CHECK_NONCE 112
-#define OCSP_F_OCSP_MATCH_ISSUERID 116
-#define OCSP_F_OCSP_REQUEST_SIGN 120
+#define OCSP_F_ASN1_STRING_ENCODE 100
+#define OCSP_F_CERT_ID_NEW 101
+#define OCSP_F_D2I_OCSP_NONCE 102
+#define OCSP_F_OCSP_BASIC_ADD1_STATUS 103
+#define OCSP_F_OCSP_BASIC_SIGN 104
+#define OCSP_F_OCSP_BASIC_VERIFY 105
+#define OCSP_F_OCSP_CHECK_DELEGATED 106
+#define OCSP_F_OCSP_CHECK_IDS 107
+#define OCSP_F_OCSP_CHECK_ISSUER 108
+#define OCSP_F_OCSP_MATCH_ISSUERID 109
+#define OCSP_F_OCSP_REQUEST_SIGN 110
#define OCSP_F_OCSP_RESPONSE_GET1_BASIC 111
-#define OCSP_F_OCSP_SENDREQ_BIO 110
-#define OCSP_F_REQUEST_VERIFY 104
-#define OCSP_F_RESPONSE_VERIFY 105
-#define OCSP_F_S2I_OCSP_NONCE 107
-#define OCSP_F_V2I_OCSP_CRLID 108
+#define OCSP_F_OCSP_SENDREQ_BIO 112
+#define OCSP_F_REQUEST_VERIFY 113
/* Reason codes. */
-#define OCSP_R_BAD_DATA 108
-#define OCSP_R_BAD_TAG 100
-#define OCSP_R_CERTIFICATE_VERIFY_ERROR 126
-#define OCSP_R_DIGEST_ERR 101
-#define OCSP_R_FAILED_TO_OPEN 109
-#define OCSP_R_FAILED_TO_READ 110
-#define OCSP_R_FAILED_TO_STAT 111
-#define OCSP_R_MISSING_OCSPSIGNING_USAGE 131
-#define OCSP_R_MISSING_VALUE 112
-#define OCSP_R_NONCE_MISSING_IN_RESPONSE 121
-#define OCSP_R_NONCE_VALUE_MISMATCH 122
-#define OCSP_R_NOT_BASIC_RESPONSE 120
-#define OCSP_R_NO_CERTIFICATE 102
-#define OCSP_R_NO_CERTIFICATES_IN_CHAIN 128
-#define OCSP_R_NO_CONTENT 115
-#define OCSP_R_NO_PUBLIC_KEY 103
-#define OCSP_R_NO_RESPONSE_DATA 104
-#define OCSP_R_NO_REVOKED_TIME 132
-#define OCSP_R_NO_SIGNATURE 105
-#define OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE 133
-#define OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA 129
-#define OCSP_R_REVOKED_NO_TIME 106
-#define OCSP_R_ROOT_CA_NOT_TRUSTED 127
-#define OCSP_R_SERVER_READ_ERROR 116
-#define OCSP_R_SERVER_RESPONSE_ERROR 117
-#define OCSP_R_SERVER_RESPONSE_PARSE_ERROR 118
-#define OCSP_R_SERVER_WRITE_ERROR 119
-#define OCSP_R_SIGNATURE_FAILURE 124
-#define OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND 125
-#define OCSP_R_UNEXPECTED_NONCE_IN_RESPONSE 123
-#define OCSP_R_UNKNOWN_MESSAGE_DIGEST 130
-#define OCSP_R_UNKNOWN_NID 107
-#define OCSP_R_UNSUPPORTED_OPTION 113
-#define OCSP_R_VALUE_ALREADY 114
+#define OCSP_R_BAD_DATA 100
+#define OCSP_R_CERTIFICATE_VERIFY_ERROR 101
+#define OCSP_R_DIGEST_ERR 102
+#define OCSP_R_MISSING_OCSPSIGNING_USAGE 103
+#define OCSP_R_NOT_BASIC_RESPONSE 104
+#define OCSP_R_NO_CERTIFICATES_IN_CHAIN 105
+#define OCSP_R_NO_CONTENT 106
+#define OCSP_R_NO_PUBLIC_KEY 107
+#define OCSP_R_NO_RESPONSE_DATA 108
+#define OCSP_R_NO_REVOKED_TIME 109
+#define OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE 110
+#define OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA 111
+#define OCSP_R_ROOT_CA_NOT_TRUSTED 112
+#define OCSP_R_SERVER_READ_ERROR 113
+#define OCSP_R_SERVER_RESPONSE_ERROR 114
+#define OCSP_R_SERVER_RESPONSE_PARSE_ERROR 115
+#define OCSP_R_SERVER_WRITE_ERROR 116
+#define OCSP_R_SIGNATURE_FAILURE 117
+#define OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND 118
+#define OCSP_R_UNKNOWN_MESSAGE_DIGEST 119
+#define OCSP_R_UNKNOWN_NID 120
#ifdef __cplusplus
}
static ERR_STRING_DATA OCSP_str_functs[]=
{
{ERR_PACK(0,OCSP_F_ASN1_STRING_ENCODE,0), "ASN1_STRING_encode"},
-{ERR_PACK(0,OCSP_F_BASIC_RESPONSE_NEW,0), "BASIC_RESPONSE_NEW"},
-{ERR_PACK(0,OCSP_F_BASIC_RESPONSE_VERIFY,0), "BASIC_RESPONSE_VERIFY"},
{ERR_PACK(0,OCSP_F_CERT_ID_NEW,0), "CERT_ID_NEW"},
-{ERR_PACK(0,OCSP_F_CERT_STATUS_NEW,0), "CERT_STATUS_NEW"},
{ERR_PACK(0,OCSP_F_D2I_OCSP_NONCE,0), "D2I_OCSP_NONCE"},
{ERR_PACK(0,OCSP_F_OCSP_BASIC_ADD1_STATUS,0), "OCSP_basic_add1_status"},
{ERR_PACK(0,OCSP_F_OCSP_BASIC_SIGN,0), "OCSP_basic_sign"},
{ERR_PACK(0,OCSP_F_OCSP_CHECK_DELEGATED,0), "OCSP_CHECK_DELEGATED"},
{ERR_PACK(0,OCSP_F_OCSP_CHECK_IDS,0), "OCSP_CHECK_IDS"},
{ERR_PACK(0,OCSP_F_OCSP_CHECK_ISSUER,0), "OCSP_CHECK_ISSUER"},
-{ERR_PACK(0,OCSP_F_OCSP_CHECK_NONCE,0), "OCSP_check_nonce"},
{ERR_PACK(0,OCSP_F_OCSP_MATCH_ISSUERID,0), "OCSP_MATCH_ISSUERID"},
{ERR_PACK(0,OCSP_F_OCSP_REQUEST_SIGN,0), "OCSP_request_sign"},
{ERR_PACK(0,OCSP_F_OCSP_RESPONSE_GET1_BASIC,0), "OCSP_response_get1_basic"},
{ERR_PACK(0,OCSP_F_OCSP_SENDREQ_BIO,0), "OCSP_sendreq_bio"},
{ERR_PACK(0,OCSP_F_REQUEST_VERIFY,0), "REQUEST_VERIFY"},
-{ERR_PACK(0,OCSP_F_RESPONSE_VERIFY,0), "RESPONSE_VERIFY"},
-{ERR_PACK(0,OCSP_F_S2I_OCSP_NONCE,0), "S2I_OCSP_NONCE"},
-{ERR_PACK(0,OCSP_F_V2I_OCSP_CRLID,0), "V2I_OCSP_CRLID"},
{0,NULL}
};
static ERR_STRING_DATA OCSP_str_reasons[]=
{
{OCSP_R_BAD_DATA ,"bad data"},
-{OCSP_R_BAD_TAG ,"bad tag"},
{OCSP_R_CERTIFICATE_VERIFY_ERROR ,"certificate verify error"},
{OCSP_R_DIGEST_ERR ,"digest err"},
-{OCSP_R_FAILED_TO_OPEN ,"failed to open"},
-{OCSP_R_FAILED_TO_READ ,"failed to read"},
-{OCSP_R_FAILED_TO_STAT ,"failed to stat"},
{OCSP_R_MISSING_OCSPSIGNING_USAGE ,"missing ocspsigning usage"},
-{OCSP_R_MISSING_VALUE ,"missing value"},
-{OCSP_R_NONCE_MISSING_IN_RESPONSE ,"nonce missing in response"},
-{OCSP_R_NONCE_VALUE_MISMATCH ,"nonce value mismatch"},
{OCSP_R_NOT_BASIC_RESPONSE ,"not basic response"},
-{OCSP_R_NO_CERTIFICATE ,"no certificate"},
{OCSP_R_NO_CERTIFICATES_IN_CHAIN ,"no certificates in chain"},
{OCSP_R_NO_CONTENT ,"no content"},
{OCSP_R_NO_PUBLIC_KEY ,"no public key"},
{OCSP_R_NO_RESPONSE_DATA ,"no response data"},
{OCSP_R_NO_REVOKED_TIME ,"no revoked time"},
-{OCSP_R_NO_SIGNATURE ,"no signature"},
{OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE,"private key does not match certificate"},
{OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA,"response contains no revocation data"},
-{OCSP_R_REVOKED_NO_TIME ,"revoked no time"},
{OCSP_R_ROOT_CA_NOT_TRUSTED ,"root ca not trusted"},
{OCSP_R_SERVER_READ_ERROR ,"server read error"},
{OCSP_R_SERVER_RESPONSE_ERROR ,"server response error"},
{OCSP_R_SERVER_WRITE_ERROR ,"server write error"},
{OCSP_R_SIGNATURE_FAILURE ,"signature failure"},
{OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND ,"signer certificate not found"},
-{OCSP_R_UNEXPECTED_NONCE_IN_RESPONSE ,"unexpected nonce in response"},
{OCSP_R_UNKNOWN_MESSAGE_DIGEST ,"unknown message digest"},
{OCSP_R_UNKNOWN_NID ,"unknown nid"},
-{OCSP_R_UNSUPPORTED_OPTION ,"unsupported option"},
-{OCSP_R_VALUE_ALREADY ,"value already"},
{0,NULL}
};
/* Nonce handling functions */
-/* Add a nonce to an OCSP request. A nonce can be specificed or if NULL
+/* Add a nonce to an extension stack. A nonce can be specificed or if NULL
* a random nonce will be generated.
*/
-int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
+static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, int len)
{
unsigned char *tmpval;
ASN1_OCTET_STRING os;
}
os.data = tmpval;
os.length = len;
- if(!OCSP_REQUEST_add1_ext_i2d(req, NID_id_pkix_OCSP_Nonce,
+ if(!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce,
&os, 0, X509V3_ADD_REPLACE))
goto err;
ret = 1;
return ret;
}
-/* Check nonce validity in a request and response: the nonce
- * must be either absent in both or present and equal in both.
+
+/* Add nonce to an OCSP request */
+
+int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
+ {
+ return ocsp_add1_nonce(&req->tbsRequest->requestExtensions, val, len);
+ }
+
+/* Same as above but for a response */
+
+int OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len)
+ {
+ return ocsp_add1_nonce(&resp->tbsResponseData->responseExtensions, val, len);
+ }
+
+/* Check nonce validity in a request and response.
+ * Return value reflects result:
+ * 1: nonces present and equal.
+ * 2: nonces both absent.
+ * 3: nonce present in response only.
+ * 0: nonces both present and not equal.
+ * -1: nonce in request only.
+ *
+ * For most responders clients can check return > 0.
+ * If responder doesn't handle nonces return != 0 may be
+ * necessary. return == 0 is always an error.
*/
+
int OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs)
{
/*
* freed immediately anyway.
*/
- int ret = 0, req_idx, resp_idx;
+ int req_idx, resp_idx;
X509_EXTENSION *req_ext, *resp_ext;
req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1);
resp_idx = OCSP_BASICRESP_get_ext_by_NID(bs, NID_id_pkix_OCSP_Nonce, -1);
- /* If both absent its OK */
- if((req_idx < 0) && (resp_idx < 0)) return 1;
+ /* Check both absent */
+ if((req_idx < 0) && (resp_idx < 0))
+ return 2;
+ /* Check in request only */
if((req_idx >= 0) && (resp_idx < 0))
- {
- OCSPerr(OCSP_F_OCSP_CHECK_NONCE, OCSP_R_NONCE_MISSING_IN_RESPONSE);
- goto err;
- }
+ return -1;
+ /* Check in response but not request */
if((req_idx < 0) && (resp_idx >= 0))
- {
- OCSPerr(OCSP_F_OCSP_CHECK_NONCE, OCSP_R_UNEXPECTED_NONCE_IN_RESPONSE);
- goto err;
- }
+ return 3;
+ /* Otherwise nonce in request and response so retrieve the extensions */
req_ext = OCSP_REQUEST_get_ext(req, req_idx);
resp_ext = OCSP_BASICRESP_get_ext(bs, resp_idx);
if(ASN1_OCTET_STRING_cmp(req_ext->value, resp_ext->value))
- {
- OCSPerr(OCSP_F_OCSP_CHECK_NONCE, OCSP_R_NONCE_VALUE_MISMATCH);
- goto err;
- }
- ret = 1;
- err:
- return ret;
+ return 0;
+ return 1;
}
/* Copy the nonce value (if any) from an OCSP request to
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