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e8af92fc
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e8af92fc
编写于
1月 18, 2001
作者:
D
Dr. Stephen Henson
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Implement remaining OCSP verify checks in
accordance with RFC2560.
上级
361ef5f4
变更
5
隐藏空白更改
内联
并排
Showing
5 changed file
with
187 addition
and
13 deletion
+187
-13
CHANGES
CHANGES
+10
-0
apps/ocsp.c
apps/ocsp.c
+2
-0
crypto/ocsp/ocsp.h
crypto/ocsp/ocsp.h
+8
-0
crypto/ocsp/ocsp_err.c
crypto/ocsp/ocsp_err.c
+8
-0
crypto/ocsp/ocsp_vfy.c
crypto/ocsp/ocsp_vfy.c
+159
-13
未找到文件。
CHANGES
浏览文件 @
e8af92fc
...
...
@@ -3,6 +3,16 @@
Changes between 0.9.6 and 0.9.7 [xx XXX 2000]
*) Add additional OCSP certificate checks. These are those specified
in RFC2560. This consists of two separate checks: the CA of the
certificate being checked must either be the OCSP signer certificate
or the issuer of the OCSP signer certificate. In the latter case the
OCSP signer certificate must contain the OCSP signing extended key
usage. This check is performed by attempting to match the OCSP
signer or the OCSP signer CA to the issuerNameHash and issuerKeyHash
in the OCSP_CERTID structures of the response.
[Steve Henson]
*) Initial OCSP certificate verification added to OCSP_basic_verify()
and related routines. This uses the standard OpenSSL certificate
verify routines to perform initial checks (just CA validity) and
...
...
apps/ocsp.c
浏览文件 @
e8af92fc
...
...
@@ -420,6 +420,8 @@ int MAIN(int argc, char **argv)
BIO_printf
(
bio_err
,
"Response verify error (%d)
\n
"
,
i
);
ERR_print_errors
(
bio_err
);
}
else
BIO_printf
(
bio_err
,
"Response verify OK
\n
"
);
ret
=
0
;
...
...
crypto/ocsp/ocsp.h
浏览文件 @
e8af92fc
...
...
@@ -561,7 +561,11 @@ void ERR_load_OCSP_strings(void);
#define OCSP_F_CERT_STATUS_NEW 103
#define OCSP_F_D2I_OCSP_NONCE 109
#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_RESPONSE_GET1_BASIC 111
#define OCSP_F_OCSP_SENDREQ_BIO 110
#define OCSP_F_REQUEST_VERIFY 104
...
...
@@ -577,15 +581,18 @@ void ERR_load_OCSP_strings(void);
#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_SIGNATURE 105
#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
...
...
@@ -595,6 +602,7 @@ void ERR_load_OCSP_strings(void);
#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
...
...
crypto/ocsp/ocsp_err.c
浏览文件 @
e8af92fc
...
...
@@ -73,7 +73,11 @@ static ERR_STRING_DATA OCSP_str_functs[]=
{
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_VERIFY
,
0
),
"OCSP_basic_verify"
},
{
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_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"
},
...
...
@@ -92,15 +96,18 @@ static ERR_STRING_DATA OCSP_str_reasons[]=
{
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_SIGNATURE
,
"no signature"
},
{
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"
},
...
...
@@ -110,6 +117,7 @@ static ERR_STRING_DATA OCSP_str_reasons[]=
{
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"
},
...
...
crypto/ocsp/ocsp_vfy.c
浏览文件 @
e8af92fc
...
...
@@ -62,6 +62,10 @@
static
X509
*
ocsp_find_signer
(
OCSP_BASICRESP
*
bs
,
STACK_OF
(
X509
)
*
certs
,
X509_STORE
*
st
,
unsigned
long
flags
);
static
X509
*
ocsp_find_signer_sk
(
STACK_OF
(
X509
)
*
certs
,
OCSP_RESPID
*
id
);
static
int
ocsp_check_issuer
(
OCSP_BASICRESP
*
bs
,
STACK_OF
(
X509
)
*
chain
,
unsigned
long
flags
);
static
int
ocsp_check_ids
(
STACK_OF
(
OCSP_SINGLERESP
)
*
sresp
,
OCSP_CERTID
**
ret
);
static
int
ocsp_match_issuerid
(
X509
*
cert
,
OCSP_CERTID
*
cid
,
STACK_OF
(
OCSP_SINGLERESP
)
*
sresp
);
static
int
ocsp_check_delegated
(
X509
*
x
,
int
flags
);
/* Verify a basic response message */
...
...
@@ -78,7 +82,7 @@ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
OCSPerr
(
OCSP_F_OCSP_BASIC_VERIFY
,
OCSP_R_SIGNER_CERTIFICATE_NOT_FOUND
);
goto
end
;
}
if
(
!
(
flags
&
OCSP_NOSIGS
))
if
(
!
(
flags
&
OCSP_NOSIGS
))
{
EVP_PKEY
*
skey
;
skey
=
X509_get_pubkey
(
signer
);
...
...
@@ -90,7 +94,7 @@ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
goto
end
;
}
}
if
(
!
(
flags
&
OCSP_NOVERIFY
))
if
(
!
(
flags
&
OCSP_NOVERIFY
))
{
if
(
flags
&
OCSP_NOCHAIN
)
X509_STORE_CTX_init
(
&
ctx
,
st
,
signer
,
NULL
);
...
...
@@ -115,15 +119,12 @@ int OCSP_basic_verify(OCSP_BASICRESP *bs, STACK_OF(X509) *certs,
goto
end
;
}
/* At this point we have a valid certificate chain
* need to verify it against the OCSP criteria.
* need to verify it against the OCSP
issuer
criteria.
*/
#if 0
if(ocsp_check_issuer(bs, chain, flags))
{
ret = 1;
goto end;
}
#endif
ret
=
ocsp_check_issuer
(
bs
,
chain
,
flags
);
/* If fatal error or valid match then finish */
if
(
ret
!=
0
)
goto
end
;
/* Easy case: explicitly trusted. Get root CA and
* check for explicit trust
...
...
@@ -172,16 +173,16 @@ static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id)
X509
*
x
;
/* Easy if lookup by name */
if
(
id
->
type
==
V_OCSP_RESPID_NAME
)
if
(
id
->
type
==
V_OCSP_RESPID_NAME
)
return
X509_find_by_subject
(
certs
,
id
->
value
.
byName
);
/* Lookup by key hash */
/* If key hash isn't SHA1 length then forget it */
if
(
id
->
value
.
byKey
->
length
!=
SHA_DIGEST_LENGTH
)
return
NULL
;
if
(
id
->
value
.
byKey
->
length
!=
SHA_DIGEST_LENGTH
)
return
NULL
;
keyhash
=
id
->
value
.
byKey
->
data
;
/* Calculate hash of each key and compare */
for
(
i
=
0
;
i
<
sk_X509_num
(
certs
);
i
++
)
for
(
i
=
0
;
i
<
sk_X509_num
(
certs
);
i
++
)
{
x
=
sk_X509_value
(
certs
,
i
);
key
=
x
->
cert_info
->
key
->
public_key
;
...
...
@@ -195,3 +196,148 @@ static X509 *ocsp_find_signer_sk(STACK_OF(X509) *certs, OCSP_RESPID *id)
}
static
int
ocsp_check_issuer
(
OCSP_BASICRESP
*
bs
,
STACK_OF
(
X509
)
*
chain
,
unsigned
long
flags
)
{
STACK_OF
(
OCSP_SINGLERESP
)
*
sresp
;
X509
*
signer
,
*
sca
;
OCSP_CERTID
*
caid
=
NULL
;
int
i
;
sresp
=
bs
->
tbsResponseData
->
responses
;
if
(
sk_X509_num
(
chain
)
<=
0
)
{
OCSPerr
(
OCSP_F_OCSP_CHECK_ISSUER
,
OCSP_R_NO_CERTIFICATES_IN_CHAIN
);
return
-
1
;
}
/* See if the issuer IDs match. */
i
=
ocsp_check_ids
(
sresp
,
&
caid
);
/* If ID mismatch or other error then return */
if
(
i
<=
0
)
return
i
;
signer
=
sk_X509_value
(
chain
,
0
);
/* Check to see if OCSP responder CA matches request CA */
if
(
sk_X509_num
(
chain
)
>
1
)
{
sca
=
sk_X509_value
(
chain
,
1
);
i
=
ocsp_match_issuerid
(
sca
,
caid
,
sresp
);
if
(
i
<
0
)
return
i
;
if
(
i
)
{
/* We have a match, if extensions OK then success */
if
(
ocsp_check_delegated
(
signer
,
flags
))
return
1
;
return
0
;
}
}
/* Otherwise check if OCSP request signed directly by request CA */
return
ocsp_match_issuerid
(
signer
,
caid
,
sresp
);
}
/* Check the issuer certificate IDs for equality. If there is a mismatch with the same
* algorithm then there's no point trying to match any certificates against the issuer.
* If the issuer IDs all match then we just need to check equality against one of them.
*/
static
int
ocsp_check_ids
(
STACK_OF
(
OCSP_SINGLERESP
)
*
sresp
,
OCSP_CERTID
**
ret
)
{
OCSP_CERTID
*
tmpid
,
*
cid
;
int
i
,
idcount
;
idcount
=
sk_OCSP_SINGLERESP_num
(
sresp
);
if
(
idcount
<=
0
)
{
OCSPerr
(
OCSP_F_OCSP_CHECK_IDS
,
OCSP_R_RESPONSE_CONTAINS_NO_REVOCATION_DATA
);
return
-
1
;
}
cid
=
sk_OCSP_SINGLERESP_value
(
sresp
,
0
)
->
certId
;
*
ret
=
NULL
;
for
(
i
=
1
;
i
<
idcount
;
i
++
)
{
tmpid
=
sk_OCSP_SINGLERESP_value
(
sresp
,
0
)
->
certId
;
/* Check to see if IDs match */
if
(
OCSP_id_issuer_cmp
(
cid
,
tmpid
))
{
/* If algoritm mismatch let caller deal with it */
if
(
OBJ_cmp
(
tmpid
->
hashAlgorithm
->
algorithm
,
cid
->
hashAlgorithm
->
algorithm
))
return
2
;
/* Else mismatch */
return
0
;
}
}
/* All IDs match: only need to check one ID */
*
ret
=
cid
;
return
1
;
}
static
int
ocsp_match_issuerid
(
X509
*
cert
,
OCSP_CERTID
*
cid
,
STACK_OF
(
OCSP_SINGLERESP
)
*
sresp
)
{
/* If only one ID to match then do it */
if
(
cid
)
{
const
EVP_MD
*
dgst
;
EVP_MD_CTX
ctx
;
X509_NAME
*
iname
;
ASN1_BIT_STRING
*
ikey
;
int
mdlen
;
unsigned
char
md
[
EVP_MAX_MD_SIZE
];
if
(
!
(
dgst
=
EVP_get_digestbyobj
(
cid
->
hashAlgorithm
->
algorithm
)))
{
OCSPerr
(
OCSP_F_OCSP_MATCH_ISSUERID
,
OCSP_R_UNKNOWN_MESSAGE_DIGEST
);
return
-
1
;
}
mdlen
=
EVP_MD_size
(
dgst
);
if
((
cid
->
issuerNameHash
->
length
!=
mdlen
)
||
(
cid
->
issuerKeyHash
->
length
!=
mdlen
))
return
0
;
iname
=
X509_get_issuer_name
(
cert
);
if
(
!
X509_NAME_digest
(
iname
,
dgst
,
md
,
NULL
))
return
-
1
;
if
(
memcmp
(
md
,
cid
->
issuerNameHash
->
data
,
mdlen
))
return
0
;
ikey
=
cert
->
cert_info
->
key
->
public_key
;
EVP_DigestInit
(
&
ctx
,
dgst
);
EVP_DigestUpdate
(
&
ctx
,
ikey
->
data
,
ikey
->
length
);
EVP_DigestFinal
(
&
ctx
,
md
,
NULL
);
if
(
memcmp
(
md
,
cid
->
issuerKeyHash
->
data
,
mdlen
))
return
0
;
return
1
;
}
else
{
/* We have to match the whole lot */
int
i
,
ret
;
OCSP_CERTID
*
tmpid
;
for
(
i
=
0
;
i
<
sk_OCSP_SINGLERESP_num
(
sresp
);
i
++
)
{
tmpid
=
sk_OCSP_SINGLERESP_value
(
sresp
,
0
)
->
certId
;
ret
=
ocsp_match_issuerid
(
cert
,
tmpid
,
NULL
);
if
(
ret
<=
0
)
return
ret
;
}
return
1
;
}
}
static
int
ocsp_check_delegated
(
X509
*
x
,
int
flags
)
{
X509_check_purpose
(
x
,
-
1
,
0
);
if
((
x
->
ex_flags
&
EXFLAG_XKUSAGE
)
&&
(
x
->
ex_xkusage
&
XKU_OCSP_SIGN
))
return
1
;
OCSPerr
(
OCSP_F_OCSP_CHECK_DELEGATED
,
OCSP_R_MISSING_OCSPSIGNING_USAGE
);
return
0
;
}
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