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Initial support for alternative CRL issuing certificates.

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Allow inibit any policy flag to be set in apps.
This commit is contained in:
Dr. Stephen Henson 2008-07-30 15:49:12 +00:00
parent 592a207b94
commit 5cbd203302
3 changed files with 46 additions and 14 deletions
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5
CHANGES
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@ -4,6 +4,11 @@
Changes between 0.9.8i and 0.9.9 [xx XXX xxxx]
*) Initial support for different CRL issuing certificates. This covers a
simple case where the self issued certificates in the chain exist and
the real CRL issuer is higher in the existing chain.
[Steve Henson]
*) Removed effectively defunct crypto/store from the build.
[Ben Laurie]

2
apps/apps.c
View File

@ -2233,6 +2233,8 @@ int args_verify(char ***pargs, int *pargc,
flags |= X509_V_FLAG_POLICY_CHECK;
else if (!strcmp(arg, "-explicit_policy"))
flags |= X509_V_FLAG_EXPLICIT_POLICY;
else if (!strcmp(arg, "-inhibit_any"))
flags |= X509_V_FLAG_INHIBIT_ANY;
else if (!strcmp(arg, "-x509_strict"))
flags |= X509_V_FLAG_X509_STRICT;
else if (!strcmp(arg, "-policy_print"))

53
crypto/x509/x509_vfy.c
View File

@ -78,7 +78,7 @@ static int check_trust(X509_STORE_CTX *ctx);
static int check_revocation(X509_STORE_CTX *ctx);
static int check_cert(X509_STORE_CTX *ctx);
static int check_policy(X509_STORE_CTX *ctx);
static int crl_akid_check(X509_STORE_CTX *ctx, AUTHORITY_KEYID *akid);
static int crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer);
static int idp_check_scope(X509 *x, X509_CRL *crl);
static int internal_verify(X509_STORE_CTX *ctx);
const char X509_version[]="X.509" OPENSSL_VERSION_PTEXT;
@ -590,6 +590,7 @@ static int check_cert(X509_STORE_CTX *ctx)
cnum = ctx->error_depth;
x = sk_X509_value(ctx->chain, cnum);
ctx->current_cert = x;
ctx->current_issuer = NULL;
/* Try to retrieve relevant CRL */
ok = ctx->get_crl(ctx, &crl, x);
/* If error looking up CRL, nothing we can do except
@ -699,9 +700,11 @@ static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl,
{
int i, crl_score, best_score = -1;
X509_CRL *crl, *best_crl = NULL;
X509 *crl_issuer, *best_crl_issuer = NULL;
for (i = 0; i < sk_X509_CRL_num(crls); i++)
{
crl_score = 0;
crl_issuer = NULL;
crl = sk_X509_CRL_value(crls, i);
if (nm && X509_NAME_cmp(nm, X509_CRL_get_issuer(crl)))
continue;
@ -718,15 +721,10 @@ static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl,
else
crl_score |= CRL_SCORE_SCOPE;
if (crl->akid)
{
if (crl_akid_check(ctx, crl->akid))
crl_score |= CRL_SCORE_AKID;
}
else
if (crl_akid_check(ctx, crl, &crl_issuer))
crl_score |= CRL_SCORE_AKID;
if (crl_score == CRL_SCORE_ALL)
/* If CRL matches criteria and issuer is not different use it */
if (crl_score == CRL_SCORE_ALL && !crl_issuer)
{
*pcrl = crl;
CRYPTO_add(&crl->references, 1, CRYPTO_LOCK_X509_CRL);
@ -736,25 +734,49 @@ static int get_crl_sk(X509_STORE_CTX *ctx, X509_CRL **pcrl,
if (crl_score > best_score)
{
best_crl = crl;
best_crl_issuer = crl_issuer;
best_score = crl_score;
}
}
if (best_crl)
{
*pcrl = best_crl;
ctx->current_issuer = best_crl_issuer;
CRYPTO_add(&best_crl->references, 1, CRYPTO_LOCK_X509);
}
return 0;
}
static int crl_akid_check(X509_STORE_CTX *ctx, AUTHORITY_KEYID *akid)
static int crl_akid_check(X509_STORE_CTX *ctx, X509_CRL *crl, X509 **pissuer)
{
X509 *crl_issuer;
int cidx = ctx->error_depth;
if (!crl->akid)
return 1;
if (cidx != sk_X509_num(ctx->chain) - 1)
cidx++;
if (X509_check_akid(sk_X509_value(ctx->chain, cidx), akid) == X509_V_OK)
crl_issuer = sk_X509_value(ctx->chain, cidx);
if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
return 1;
/* If crl_issuer is self issued we may get a match further along the
* chain.
*/
if (crl_issuer->ex_flags & EXFLAG_SI)
{
for (cidx++; cidx < sk_X509_num(ctx->chain); cidx++)
{
crl_issuer = sk_X509_value(ctx->chain, cidx);
if (X509_check_akid(crl_issuer, crl->akid) == X509_V_OK)
{
*pissuer = crl_issuer;
return 1;
}
if (!(crl_issuer->ex_flags & EXFLAG_SI))
break;
}
}
return 0;
}
@ -864,10 +886,13 @@ static int check_crl(X509_STORE_CTX *ctx, X509_CRL *crl)
int ok = 0, chnum, cnum;
cnum = ctx->error_depth;
chnum = sk_X509_num(ctx->chain) - 1;
/* Find CRL issuer: if not last certificate then issuer
/* if we have an alternative CRL issuer cert use that */
if (ctx->current_issuer)
issuer = ctx->current_issuer;
/* Else find CRL issuer: if not last certificate then issuer
* is next certificate in chain.
*/
if(cnum < chnum)
else if (cnum < chnum)
issuer = sk_X509_value(ctx->chain, cnum + 1);
else
{