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Modify OCSP nonce behaviour.

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This commit is contained in:
Dr. Stephen Henson 2001-02-12 23:28:45 +00:00
parent 94fcd01349
commit 46a58ab946
5 changed files with 93 additions and 100 deletions
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9
CHANGES
View File

@ -3,6 +3,15 @@
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.

11
apps/ocsp.c
View File

@ -515,10 +515,15 @@ int MAIN(int argc, char **argv)
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);

89
crypto/ocsp/ocsp.h
View File

@ -415,6 +415,7 @@ OCSP_CERTID *OCSP_cert_id_new(const EVP_MD *dgst,
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);
@ -557,63 +558,43 @@ void ERR_load_OCSP_strings(void);
/* 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
}

20
crypto/ocsp/ocsp_err.c
View File

@ -67,10 +67,7 @@
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"},
@ -78,42 +75,28 @@ static ERR_STRING_DATA OCSP_str_functs[]=
{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"},
@ -121,11 +104,8 @@ static ERR_STRING_DATA OCSP_str_reasons[]=
{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}
};

64
crypto/ocsp/ocsp_ext.c
View File

@ -303,11 +303,11 @@ err:
/* 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;
@ -321,7 +321,7 @@ int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
}
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;
@ -330,9 +330,34 @@ int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len)
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)
{
/*
@ -343,32 +368,25 @@ 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