Public API for Certificate Transparency
Reviewed-by: Ben Laurie <ben@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
diff --git a/Configurations/descrip.mms.tmpl b/Configurations/descrip.mms.tmpl
index e8e335d..5b52a09 100644
--- a/Configurations/descrip.mms.tmpl
+++ b/Configurations/descrip.mms.tmpl
@@ -50,15 +50,13 @@
}
my $sd1 = sourcedir("ssl","record");
my $sd2 = sourcedir("ssl","statem");
- $unified_info{before}->{"[.crypto.ct]ct_lib.OBJ"}
- = $unified_info{before}->{"[.test]heartbeat_test.OBJ"}
+ $unified_info{before}->{"[.test]heartbeat_test.OBJ"}
= $unified_info{before}->{"[.test]ssltest.OBJ"}
= qq(record = F\$PARSE("$sd1","A.;",,,"SYNTAX_ONLY") - "A.;"
define record 'record'
statem = F\$PARSE("$sd2","A.;",,,"SYNTAX_ONLY") - "A.;"
define statem 'statem');
- $unified_info{after}->{"[.crypto.ct]ct_lib.OBJ"}
- = $unified_info{after}->{"[.test]heartbeat_test.OBJ"}
+ $unified_info{after}->{"[.test]heartbeat_test.OBJ"}
= $unified_info{after}->{"[.test]ssltest.OBJ"}
= qq(deassign statem
deassign record);
diff --git a/Configurations/unix-Makefile.tmpl b/Configurations/unix-Makefile.tmpl
index 2dbfaaa..0e91fb0 100644
--- a/Configurations/unix-Makefile.tmpl
+++ b/Configurations/unix-Makefile.tmpl
@@ -650,8 +650,6 @@
$(PERL) ../util/mkerr.pl -conf $$e \
-nostatic -staticloader -write *.c; \
done )
- ( cd $(SRCDIR)/crypto/ct; \
- $(PERL) ../../util/mkerr.pl -conf ct.ec -hprefix internal/ -write *.c )
ordinals:
( b=`pwd`; cd $(SRCDIR); $(PERL) -I$$b util/mkdef.pl crypto update )
diff --git a/Makefile.in b/Makefile.in
index 924dfa0..4e7aa71 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -521,7 +521,6 @@
$(PERL) util/ck_errf.pl -strict */*.c */*/*.c
$(PERL) util/mkerr.pl -recurse -write
(cd engines; $(MAKE) PERL=$(PERL) errors)
- (cd crypto/ct; $(MAKE) PERL=$(PERL) errors)
ordinals: util/libeay.num util/ssleay.num test_ordinals TABLE
util/libeay.num::
diff --git a/crypto/ct/Makefile.in b/crypto/ct/Makefile.in
index 7e58c3b..21ff231 100644
--- a/crypto/ct/Makefile.in
+++ b/crypto/ct/Makefile.in
@@ -15,8 +15,8 @@
GENERAL=Makefile
LIB=$(TOP)/libcrypto.a
-LIBSRC= ct_lib.c ct_err.c ct_oct.c ct_prn.c
-LIBOBJ= ct_lib.o ct_err.o ct_oct.o ct_prn.o
+LIBSRC= ct_err.c ct_oct.c ct_prn.c ct_sct.c ct_x509v3.c
+LIBOBJ= ct_err.o ct_oct.o ct_prn.o ct_sct.o ct_x509v3.o
SRC= $(LIBSRC)
@@ -27,8 +27,6 @@
top:
(cd ../..; $(MAKE) DIRS=crypto SDIRS=$(DIR) sub_all)
-test:
-
all: lib
lib: $(LIBOBJ)
@@ -39,9 +37,6 @@
files:
$(PERL) $(TOP)/util/files.pl Makefile >> $(TOP)/MINFO
-errors:
- $(PERL) $(TOP)/util/mkerr.pl -conf ct.ec -hprefix internal/ -write *.c
-
depend:
$(TOP)/util/domd $(CFLAG) $(INCLUDES) -- $(PROGS) $(LIBSRC)
diff --git a/crypto/ct/build.info b/crypto/ct/build.info
index 2007715..b7766b6 100644
--- a/crypto/ct/build.info
+++ b/crypto/ct/build.info
@@ -1,2 +1,2 @@
LIBS=../../libcrypto
-SOURCE[../../libcrypto]= ct_lib.c ct_err.c ct_oct.c ct_prn.c
+SOURCE[../../libcrypto]= ct_err.c ct_oct.c ct_prn.c ct_sct.c ct_x509v3.c
diff --git a/crypto/ct/ct.ec b/crypto/ct/ct.ec
deleted file mode 100644
index 6f50f9a..0000000
--- a/crypto/ct/ct.ec
+++ /dev/null
@@ -1,6 +0,0 @@
-# crypto/ct/ct.ec
-
-# configuration file for util/mkerr.pl
-
-# files that may have to be rewritten by util/mkerr.pl
-L CT ../../crypto/include/internal/ct_int.h ct_err.c
diff --git a/crypto/ct/ct_err.c b/crypto/ct/ct_err.c
index b2ba432..033872e 100644
--- a/crypto/ct/ct_err.c
+++ b/crypto/ct/ct_err.c
@@ -1,4 +1,3 @@
-/* ct_err.c */
/* ====================================================================
* Copyright (c) 1999-2016 The OpenSSL Project. All rights reserved.
*
@@ -61,7 +60,7 @@
#include <stdio.h>
#include <openssl/err.h>
-#include <internal/ct_int.h>
+#include <openssl/ct.h>
/* BEGIN ERROR CODES */
#ifndef OPENSSL_NO_ERR
diff --git a/crypto/ct/ct_locl.h b/crypto/ct/ct_locl.h
new file mode 100644
index 0000000..9b76d16
--- /dev/null
+++ b/crypto/ct/ct_locl.h
@@ -0,0 +1,110 @@
+/*
+ * Written by Rob Percival (robpercival@google.com) for the OpenSSL project.
+ */
+/* ====================================================================
+ * Copyright (c) 2016 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ */
+
+#ifdef OPENSSL_NO_CT
+# error CT is disabled.
+#endif
+
+#include <stddef.h>
+
+#include <openssl/ct.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+#include <openssl/safestack.h>
+
+/*
+ * From RFC6962: opaque SerializedSCT<1..2^16-1>; struct { SerializedSCT
+ * sct_list <1..2^16-1>; } SignedCertificateTimestampList;
+ */
+# define MAX_SCT_SIZE 65535
+# define MAX_SCT_LIST_SIZE MAX_SCT_SIZE
+
+/* Signed Certificate Timestamp */
+struct sct_st {
+ sct_version_t version;
+ /* If version is not SCT_VERSION_V1, this contains the encoded SCT */
+ unsigned char *sct;
+ size_t sct_len;
+ /* If version is SCT_VERSION_V1, fields below contain components of the SCT */
+ unsigned char *log_id;
+ size_t log_id_len;
+ /*
+ * Note, we cannot distinguish between an unset timestamp, and one
+ * that is set to 0. However since CT didn't exist in 1970, no real
+ * SCT should ever be set as such.
+ */
+ uint64_t timestamp;
+ unsigned char *ext;
+ size_t ext_len;
+ unsigned char hash_alg;
+ unsigned char sig_alg;
+ unsigned char *sig;
+ size_t sig_len;
+ /* Log entry type */
+ ct_log_entry_type_t entry_type;
+};
+
+/*
+ * Does this SCT have the minimum fields populated to be usuable?
+ * Returns 1 if so, 0 otherwise.
+ */
+int SCT_is_complete(const SCT *sct);
+
+/*
+ * Does this SCT have the signature-related fields populated?
+ * Returns 1 if so, 0 otherwise.
+ * This checks that the signature and hash algorithms are set to supported
+ * values and that the signature field is set.
+ */
+int SCT_signature_is_complete(const SCT *sct);
+
+
diff --git a/crypto/ct/ct_oct.c b/crypto/ct/ct_oct.c
index 8d075fc..6b6a6a7 100644
--- a/crypto/ct/ct_oct.c
+++ b/crypto/ct/ct_oct.c
@@ -55,82 +55,44 @@
* Hudson (tjh@cryptsoft.com).
*
*/
-
-#ifndef OPENSSL_NO_CT
-# include <limits.h>
-# include "internal/cryptlib.h"
-# include <openssl/asn1.h>
-# include <openssl/evp.h>
-# include <openssl/x509.h>
-# include <openssl/x509v3.h>
-# include "crypto/include/internal/ct_int.h"
+#ifdef OPENSSL_NO_CT
+# error "CT is disabled"
+#endif
-# define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
- (((unsigned int)((c)[1])) )),c+=2)
+#include <limits.h>
+#include <string.h>
-# define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
- c[1]=(unsigned char)(((s) )&0xff)),c+=2)
+#include <openssl/asn1.h>
+#include <openssl/buffer.h>
+#include <openssl/ct.h>
+#include <openssl/err.h>
-# define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
- l|=((uint64_t)(*((c)++)))<<48, \
- l|=((uint64_t)(*((c)++)))<<40, \
- l|=((uint64_t)(*((c)++)))<<32, \
- l|=((uint64_t)(*((c)++)))<<24, \
- l|=((uint64_t)(*((c)++)))<<16, \
- l|=((uint64_t)(*((c)++)))<< 8, \
- l|=((uint64_t)(*((c)++))))
+#include "ct_locl.h"
-# define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
- *((c)++)=(unsigned char)(((l)>>48)&0xff), \
- *((c)++)=(unsigned char)(((l)>>40)&0xff), \
- *((c)++)=(unsigned char)(((l)>>32)&0xff), \
- *((c)++)=(unsigned char)(((l)>>24)&0xff), \
- *((c)++)=(unsigned char)(((l)>>16)&0xff), \
- *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
- *((c)++)=(unsigned char)(((l) )&0xff))
+#define n2s(c,s) ((s=(((unsigned int)((c)[0]))<< 8)| \
+ (((unsigned int)((c)[1])) )),c+=2)
-static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a,
- const unsigned char **pp, int len);
-static int i2d_SCT_LIST(STACK_OF(SCT) *a, unsigned char **pp);
-static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
- BIO *out, int indent);
+#define s2n(s,c) ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
+ c[1]=(unsigned char)(((s) )&0xff)),c+=2)
-static char *i2s_poison(const X509V3_EXT_METHOD *method, void *val)
-{
- return OPENSSL_strdup("NULL");
-}
+#define n2l8(c,l) (l =((uint64_t)(*((c)++)))<<56, \
+ l|=((uint64_t)(*((c)++)))<<48, \
+ l|=((uint64_t)(*((c)++)))<<40, \
+ l|=((uint64_t)(*((c)++)))<<32, \
+ l|=((uint64_t)(*((c)++)))<<24, \
+ l|=((uint64_t)(*((c)++)))<<16, \
+ l|=((uint64_t)(*((c)++)))<< 8, \
+ l|=((uint64_t)(*((c)++))))
-const X509V3_EXT_METHOD v3_ct_scts[] = {
- { NID_ct_precert_scts, 0, NULL,
- 0, (X509V3_EXT_FREE)SCT_LIST_free,
- (X509V3_EXT_D2I)d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST,
- 0, 0, 0, 0,
- (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
- NULL },
-
- { NID_ct_precert_poison, 0, ASN1_ITEM_ref(ASN1_NULL),
- 0, 0, 0, 0, i2s_poison, 0,
- 0, 0, 0, 0, NULL },
-
- { NID_ct_cert_scts, 0, NULL,
- 0, (X509V3_EXT_FREE)SCT_LIST_free,
- (X509V3_EXT_D2I)d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST,
- 0, 0, 0, 0,
- (X509V3_EXT_I2R)i2r_SCT_LIST, 0,
- NULL },
-};
-
-int SCT_signature_is_valid(const SCT *sct)
-{
- if (SCT_get_signature_nid(sct) == NID_undef ||
- sct->sig_len == 0 || sct->sig == NULL) {
- return 0;
- }
-
- return 1;
-}
-
+#define l2n8(l,c) (*((c)++)=(unsigned char)(((l)>>56)&0xff), \
+ *((c)++)=(unsigned char)(((l)>>48)&0xff), \
+ *((c)++)=(unsigned char)(((l)>>40)&0xff), \
+ *((c)++)=(unsigned char)(((l)>>32)&0xff), \
+ *((c)++)=(unsigned char)(((l)>>24)&0xff), \
+ *((c)++)=(unsigned char)(((l)>>16)&0xff), \
+ *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
+ *((c)++)=(unsigned char)(((l) )&0xff))
int o2i_SCT_signature(SCT *sct, const unsigned char **in, size_t len)
{
@@ -138,7 +100,7 @@
size_t len_remaining = len;
const unsigned char *p = *in;
- if (sct->version != SCT_V1) {
+ if (sct->version != SCT_VERSION_V1) {
CTerr(CT_F_O2I_SCT_SIGNATURE, CT_R_UNSUPPORTED_VERSION);
return -1;
}
@@ -193,7 +155,7 @@
p = *in;
sct->version = *p;
- if (sct->version == SCT_V1) {
+ if (sct->version == SCT_VERSION_V1) {
int sig_len;
size_t len2;
/*
@@ -207,11 +169,11 @@
}
len -= 43;
p++;
- sct->log_id = BUF_memdup(p, SCT_V1_HASHLEN);
+ sct->log_id = BUF_memdup(p, CT_V1_HASHLEN);
if (sct->log_id == NULL)
goto err;
- sct->log_id_len = SCT_V1_HASHLEN;
- p += SCT_V1_HASHLEN;
+ sct->log_id_len = CT_V1_HASHLEN;
+ p += CT_V1_HASHLEN;
n2l8(p, sct->timestamp);
@@ -261,12 +223,12 @@
size_t len;
unsigned char *p = NULL;
- if (!SCT_signature_is_valid(sct)) {
+ if (!SCT_signature_is_complete(sct)) {
CTerr(CT_F_I2O_SCT_SIGNATURE, CT_R_SCT_INVALID_SIGNATURE);
goto err;
}
- if (sct->version != SCT_V1) {
+ if (sct->version != SCT_VERSION_V1) {
CTerr(CT_F_I2O_SCT_SIGNATURE, CT_R_UNSUPPORTED_VERSION);
goto err;
}
@@ -308,7 +270,7 @@
size_t len;
unsigned char *p = NULL;
- if (!SCT_is_valid(sct)) {
+ if (!SCT_is_complete(sct)) {
CTerr(CT_F_I2O_SCT, CT_R_SCT_NOT_SET);
goto err;
}
@@ -318,7 +280,7 @@
* extensions; (1 byte) Hash algorithm (1 byte) Signature algorithm (2
* bytes + ?) Signature
*/
- if (sct->version == SCT_V1)
+ if (sct->version == SCT_VERSION_V1)
len = 43 + sct->ext_len + 4 + sct->sig_len;
else
len = sct->sct_len;
@@ -338,10 +300,10 @@
*out = p;
}
- if (sct->version == SCT_V1) {
+ if (sct->version == SCT_VERSION_V1) {
*p++ = sct->version;
- memcpy(p, sct->log_id, SCT_V1_HASHLEN);
- p += SCT_V1_HASHLEN;
+ memcpy(p, sct->log_id, CT_V1_HASHLEN);
+ p += CT_V1_HASHLEN;
l2n8(sct->timestamp, p);
s2n(sct->ext_len, p);
if (sct->ext_len > 0) {
@@ -429,7 +391,7 @@
return NULL;
}
-int i2o_SCT_LIST(STACK_OF(SCT) *a, unsigned char **pp)
+int i2o_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp)
{
int len, sct_len, i, is_pp_new = 0;
size_t len2;
@@ -484,8 +446,8 @@
return -1;
}
-static STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a,
- const unsigned char **pp, int len)
+STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
+ long len)
{
ASN1_OCTET_STRING *oct = NULL;
STACK_OF(SCT) *sk = NULL;
@@ -503,7 +465,7 @@
return sk;
}
-static int i2d_SCT_LIST(STACK_OF(SCT) *a, unsigned char **out)
+int i2d_SCT_LIST(STACK_OF(SCT) *a, unsigned char **out)
{
ASN1_OCTET_STRING oct;
int len;
@@ -516,20 +478,3 @@
OPENSSL_free(oct.data);
return len;
}
-
-static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
- BIO *out, int indent)
-{
- int i;
-
- for (i = 0; i < sk_SCT_num(sct_list); ++i) {
- SCT *sct = sk_SCT_value(sct_list, i);
- SCT_print(sct, out, indent);
- if (i < sk_SCT_num(sct_list) - 1)
- BIO_printf(out, "\n");
- }
-
- return 1;
-}
-
-#endif
diff --git a/crypto/ct/ct_prn.c b/crypto/ct/ct_prn.c
index 9132553..73aba7e 100644
--- a/crypto/ct/ct_prn.c
+++ b/crypto/ct/ct_prn.c
@@ -56,17 +56,16 @@
*
*/
-#ifndef OPENSSL_NO_CT
+#ifdef OPENSSL_NO_CT
+# error "CT is disabled"
+#endif
-# include <limits.h>
-# include "internal/cryptlib.h"
-# include <openssl/asn1.h>
-# include <openssl/evp.h>
-# include <openssl/x509.h>
-# include <openssl/x509v3.h>
-# include "crypto/include/internal/ct_int.h"
+#include <openssl/asn1.h>
+#include <openssl/bio.h>
-static void sct_sigalg_print(BIO *out, const SCT *sct)
+#include "ct_locl.h"
+
+static void SCT_signature_algorithms_print(const SCT *sct, BIO *out)
{
int nid = SCT_get_signature_nid(sct);
@@ -76,7 +75,7 @@
BIO_printf(out, "%s", OBJ_nid2ln(nid));
}
-static void timestamp_print(BIO *out, uint64_t timestamp)
+static void timestamp_print(uint64_t timestamp, BIO *out)
{
ASN1_GENERALIZEDTIME *gen = ASN1_GENERALIZEDTIME_new();
char genstr[20];
@@ -95,12 +94,12 @@
ASN1_GENERALIZEDTIME_free(gen);
}
-void SCT_print(SCT *sct, BIO *out, int indent)
+void SCT_print(const SCT *sct, BIO *out, int indent)
{
BIO_printf(out, "%*sSigned Certificate Timestamp:", indent, "");
BIO_printf(out, "\n%*sVersion : ", indent + 4, "");
- if (sct->version != SCT_V1) {
+ if (sct->version != SCT_VERSION_V1) {
BIO_printf(out, "unknown\n%*s", indent + 16, "");
BIO_hex_string(out, indent + 16, 16, sct->sct, sct->sct_len);
return;
@@ -112,7 +111,7 @@
BIO_hex_string(out, indent + 16, 16, sct->log_id, sct->log_id_len);
BIO_printf(out, "\n%*sTimestamp : ", indent + 4, "");
- timestamp_print(out, sct->timestamp);
+ timestamp_print(sct->timestamp, out);
BIO_printf(out, "\n%*sExtensions: ", indent + 4, "");
if (sct->ext_len == 0)
@@ -121,9 +120,20 @@
BIO_hex_string(out, indent + 16, 16, sct->ext, sct->ext_len);
BIO_printf(out, "\n%*sSignature : ", indent + 4, "");
- sct_sigalg_print(out, sct);
+ SCT_signature_algorithms_print(sct, out);
BIO_printf(out, "\n%*s ", indent + 4, "");
BIO_hex_string(out, indent + 16, 16, sct->sig, sct->sig_len);
}
-#endif
+void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
+ const char *separator)
+{
+ int i;
+
+ for (i = 0; i < sk_SCT_num(sct_list); ++i) {
+ SCT *sct = sk_SCT_value(sct_list, i);
+ SCT_print(sct, out, indent);
+ if (i < sk_SCT_num(sct_list) - 1)
+ BIO_printf(out, "%s", separator);
+ }
+}
diff --git a/crypto/ct/ct_lib.c b/crypto/ct/ct_sct.c
similarity index 79%
rename from crypto/ct/ct_lib.c
rename to crypto/ct/ct_sct.c
index 81676e3..81e51f0 100644
--- a/crypto/ct/ct_lib.c
+++ b/crypto/ct/ct_sct.c
@@ -1,6 +1,6 @@
/*
- * Written by Rob Stradling (rob@comodo.com) and Stephen Henson
- * (steve@openssl.org) for the OpenSSL project 2014.
+ * Written by Rob Stradling (rob@comodo.com), Stephen Henson (steve@openssl.org)
+ * and Adam Eijdenberg (adam.eijdenberg@gmail.com) for the OpenSSL project 2016.
*/
/* ====================================================================
* Copyright (c) 2014 The OpenSSL Project. All rights reserved.
@@ -56,39 +56,47 @@
*
*/
-#ifndef OPENSSL_NO_CT
+#ifdef OPENSSL_NO_CT
+# error "CT disabled"
+#endif
-# include <limits.h>
-# include "internal/cryptlib.h"
-# include "../../ssl/ssl_locl.h"
-# include "internal/ct_int.h"
+#include <openssl/ct.h>
+#include <openssl/err.h>
+#include <openssl/evp.h>
+#include <openssl/tls1.h>
+#include <openssl/x509.h>
+
+#include "ct_locl.h"
SCT *SCT_new(void)
{
SCT *sct = OPENSSL_zalloc(sizeof(SCT));
+
if (sct == NULL) {
CTerr(CT_F_SCT_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
}
- sct->entry_type = UNSET_ENTRY;
- sct->version = UNSET_VERSION;
+
+ sct->entry_type = CT_LOG_ENTRY_TYPE_NOT_SET;
+ sct->version = SCT_VERSION_NOT_SET;
return sct;
}
void SCT_free(SCT *sct)
{
- if (sct != NULL) {
- OPENSSL_free(sct->log_id);
- OPENSSL_free(sct->ext);
- OPENSSL_free(sct->sig);
- OPENSSL_free(sct->sct);
- OPENSSL_free(sct);
- }
+ if (sct == NULL)
+ return;
+
+ OPENSSL_free(sct->log_id);
+ OPENSSL_free(sct->ext);
+ OPENSSL_free(sct->sig);
+ OPENSSL_free(sct->sct);
+ OPENSSL_free(sct);
}
int SCT_set_version(SCT *sct, sct_version_t version)
{
- if (version != SCT_V1) {
+ if (version != SCT_VERSION_V1) {
CTerr(CT_F_SCT_SET_VERSION, CT_R_UNSUPPORTED_VERSION);
return 0;
}
@@ -96,23 +104,26 @@
return 1;
}
-int SCT_set_log_entry_type(SCT *sct, log_entry_type_t entry_type)
+int SCT_set_log_entry_type(SCT *sct, ct_log_entry_type_t entry_type)
{
- if (entry_type != X509_ENTRY && entry_type != PRECERT_ENTRY) {
+ switch (entry_type) {
+ case CT_LOG_ENTRY_TYPE_X509:
+ case CT_LOG_ENTRY_TYPE_PRECERT:
+ sct->entry_type = entry_type;
+ return 1;
+ default:
CTerr(CT_F_SCT_SET_LOG_ENTRY_TYPE, CT_R_UNSUPPORTED_ENTRY_TYPE);
return 0;
}
- sct->entry_type = entry_type;
- return 1;
}
int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len)
{
- /* Currently only SHA-256 allowed so length must be SCT_V1_HASHLEN */
- if (log_id_len != SCT_V1_HASHLEN) {
+ if (sct->version == SCT_VERSION_V1 && log_id_len != CT_V1_HASHLEN) {
CTerr(CT_F_SCT_SET0_LOG_ID, CT_R_INVALID_LOG_ID_LENGTH);
return 0;
}
+
OPENSSL_free(sct->log_id);
sct->log_id = log_id;
sct->log_id_len = log_id_len;
@@ -121,25 +132,23 @@
int SCT_set1_log_id(SCT *sct, const unsigned char *log_id, size_t log_id_len)
{
- /* Currently only SHA-256 allowed so length must be SCT_V1_HASHLEN */
- if (log_id_len != SCT_V1_HASHLEN) {
+ if (sct->version == SCT_VERSION_V1 && log_id_len != CT_V1_HASHLEN) {
CTerr(CT_F_SCT_SET1_LOG_ID, CT_R_INVALID_LOG_ID_LENGTH);
return 0;
}
OPENSSL_free(sct->log_id);
- if (log_id == NULL || log_id_len == 0) {
- sct->log_id = NULL;
- } else {
- sct->log_id = OPENSSL_memdup(log_id, log_id_len);
+ sct->log_id = NULL;
+ sct->log_id_len = 0;
+ if (log_id != NULL && log_id_len > 0) {
+ sct->log_id = OPENSSL_memdup(log_id, log_id_len);
if (sct->log_id == NULL) {
CTerr(CT_F_SCT_SET1_LOG_ID, ERR_R_MALLOC_FAILURE);
return 0;
}
+ sct->log_id_len = log_id_len;
}
-
- sct->log_id_len = log_id_len;
return 1;
}
@@ -200,16 +209,17 @@
int SCT_set1_signature(SCT *sct, const unsigned char *sig, size_t sig_len)
{
OPENSSL_free(sct->sig);
- if (sig == NULL || sig_len == 0) {
- sct->sig = NULL;
- } else {
+ sct->sig = NULL;
+ sct->sig_len = 0;
+
+ if (sig != NULL && sig_len > 0) {
sct->sig = OPENSSL_memdup(sig, sig_len);
if (sct->sig == NULL) {
CTerr(CT_F_SCT_SET1_SIGNATURE, ERR_R_MALLOC_FAILURE);
return 0;
}
+ sct->sig_len = sig_len;
}
- sct->sig_len = sig_len;
return 1;
}
@@ -218,7 +228,7 @@
return sct->version;
}
-log_entry_type_t SCT_get_log_entry_type(const SCT *sct)
+ct_log_entry_type_t SCT_get_log_entry_type(const SCT *sct)
{
return sct->entry_type;
}
@@ -236,7 +246,7 @@
int SCT_get_signature_nid(const SCT *sct)
{
- if (sct->version == SCT_V1) {
+ if (sct->version == SCT_VERSION_V1) {
if (sct->hash_alg == TLSEXT_hash_sha256) {
switch (sct->sig_alg) {
case TLSEXT_signature_ecdsa:
@@ -263,16 +273,21 @@
return sct->sig_len;
}
-int SCT_is_valid(const SCT *sct)
+int SCT_is_complete(const SCT *sct)
{
switch (sct->version) {
- case UNSET_VERSION:
+ case SCT_VERSION_NOT_SET:
return 0;
- case SCT_V1:
- return sct->log_id != NULL && SCT_signature_is_valid(sct);
+ case SCT_VERSION_V1:
+ return sct->log_id != NULL && SCT_signature_is_complete(sct);
default:
return sct->sct != NULL; /* Just need cached encoding */
}
}
-#endif
+int SCT_signature_is_complete(const SCT *sct)
+{
+ return SCT_get_signature_nid(sct) != NID_undef &&
+ sct->sig != NULL && sct->sig_len > 0;
+}
+
diff --git a/crypto/ct/ct_x509v3.c b/crypto/ct/ct_x509v3.c
new file mode 100644
index 0000000..2617f13
--- /dev/null
+++ b/crypto/ct/ct_x509v3.c
@@ -0,0 +1,109 @@
+/*
+ * Written by Rob Stradling (rob@comodo.com) and Stephen Henson
+ * (steve@openssl.org) for the OpenSSL project 2014.
+ */
+/* ====================================================================
+ * Copyright (c) 2014 The OpenSSL Project. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ * software must display the following acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission. For written permission, please contact
+ * licensing@OpenSSL.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ * nor may "OpenSSL" appear in their names without prior written
+ * permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by the OpenSSL Project
+ * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com). This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+#ifdef OPENSSL_NO_CT
+# error "CT is disabled"
+#endif
+
+#include <openssl/bio.h>
+#include <openssl/ct.h>
+#include <openssl/obj_mac.h>
+#include <openssl/x509v3.h>
+
+#include "internal/ct_int.h"
+
+static char *i2s_poison(const X509V3_EXT_METHOD *method, void *val)
+{
+ return OPENSSL_strdup("NULL");
+}
+
+static int i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list,
+ BIO *out, int indent)
+{
+ SCT_LIST_print(sct_list, out, indent, "\n");
+ return 1;
+}
+
+/* Handlers for X509v3/OCSP Certificate Transparency extensions */
+const X509V3_EXT_METHOD v3_ct_scts[] = {
+ /* X509v3 extension in certificates that contains SCTs */
+ { NID_ct_precert_scts, 0, NULL,
+ NULL, (X509V3_EXT_FREE)SCT_LIST_free,
+ (X509V3_EXT_D2I)d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST,
+ NULL, NULL,
+ NULL, NULL,
+ (X509V3_EXT_I2R)i2r_SCT_LIST, NULL,
+ NULL },
+
+ /* X509v3 extension to mark a certificate as a pre-certificate */
+ { NID_ct_precert_poison, 0, ASN1_ITEM_ref(ASN1_NULL),
+ NULL, NULL, NULL, NULL,
+ i2s_poison, NULL,
+ NULL, NULL,
+ NULL, NULL,
+ NULL },
+
+ /* OCSP extension that contains SCTs */
+ { NID_ct_cert_scts, 0, NULL,
+ 0, (X509V3_EXT_FREE)SCT_LIST_free,
+ (X509V3_EXT_D2I)d2i_SCT_LIST, (X509V3_EXT_I2D)i2d_SCT_LIST,
+ NULL, NULL,
+ NULL, NULL,
+ (X509V3_EXT_I2R)i2r_SCT_LIST, NULL,
+ NULL },
+};
diff --git a/crypto/err/err.c b/crypto/err/err.c
index 00565fa..1547181 100644
--- a/crypto/err/err.c
+++ b/crypto/err/err.c
@@ -155,6 +155,7 @@
{ERR_PACK(ERR_LIB_FIPS, 0, 0), "FIPS routines"},
{ERR_PACK(ERR_LIB_CMS, 0, 0), "CMS routines"},
{ERR_PACK(ERR_LIB_HMAC, 0, 0), "HMAC routines"},
+ {ERR_PACK(ERR_LIB_CT, 0, 0), "CT routines"},
{ERR_PACK(ERR_LIB_ASYNC, 0, 0), "ASYNC routines"},
{0, NULL},
};
diff --git a/crypto/err/err_all.c b/crypto/err/err_all.c
index 4932587..345ce44 100644
--- a/crypto/err/err_all.c
+++ b/crypto/err/err_all.c
@@ -98,7 +98,9 @@
#ifndef OPENSSL_NO_CMS
# include <openssl/cms.h>
#endif
-#include <internal/ct_int.h>
+#ifndef OPENSSL_NO_CT
+# include <openssl/ct.h>
+#endif
#include <openssl/async.h>
void err_load_crypto_strings_intern(void)
diff --git a/crypto/err/openssl.ec b/crypto/err/openssl.ec
index 88d7be5..ce9dc5c 100644
--- a/crypto/err/openssl.ec
+++ b/crypto/err/openssl.ec
@@ -33,6 +33,7 @@
L HMAC include/openssl/hmac.h crypto/hmac/hmac_err.c
L CMS include/openssl/cms.h crypto/cms/cms_err.c
L FIPS include/openssl/fips.h crypto/fips_err.h
+L CT include/openssl/ct.h crypto/ct/ct_err.c
L ASYNC include/openssl/async.h crypto/async/async_err.c
# additional header files to be scanned for function names
@@ -40,10 +41,10 @@
L NONE crypto/ec/ec_lcl.h NONE
L NONE crypto/asn1/asn_lcl.h NONE
L NONE crypto/cms/cms_lcl.h NONE
+L NONE crypto/ct/ct_locl.h NONE
L NONE fips/rand/fips_rand.h NONE
L NONE ssl/ssl_locl.h NONE
-
F RSAREF_F_RSA_BN2BIN
F RSAREF_F_RSA_PRIVATE_DECRYPT
F RSAREF_F_RSA_PRIVATE_ENCRYPT
diff --git a/crypto/include/internal/ct_int.h b/crypto/include/internal/ct_int.h
index b564dce..99b9332 100644
--- a/crypto/include/internal/ct_int.h
+++ b/crypto/include/internal/ct_int.h
@@ -1,6 +1,6 @@
/*
- * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
- * 2015.
+ * Written by Dr Stephen N Henson (steve@openssl.org)
+ * and Adam Eijdenberg (eijdenberg@google.com) for the OpenSSL project 2015.
*/
/* ====================================================================
* Copyright (c) 2015 The OpenSSL Project. All rights reserved.
@@ -51,329 +51,25 @@
* ====================================================================
*
*/
-#ifndef HEADER_CT_LOCL_H
-# define HEADER_CT_LOCL_H
+#ifndef HEADER_CT_INT_H
+# define HEADER_CT_INT_H
# ifdef __cplusplus
extern "C" {
# endif
-# ifndef OPENSSL_NO_CT
-
-# include <openssl/x509v3.h>
-
-/* All hashes are currently SHA256 */
-# define SCT_V1_HASHLEN 32
-/* Minimum RSA key size, from RFC6962 */
-# define SCT_MIN_RSA_BITS 2048
-
-/*
- * From RFC6962: opaque SerializedSCT<1..2^16-1>; struct { SerializedSCT
- * sct_list <1..2^16-1>; } SignedCertificateTimestampList;
- */
-
-# define MAX_SCT_SIZE 65535
-# define MAX_SCT_LIST_SIZE MAX_SCT_SIZE
-
-typedef enum {
- UNSET_ENTRY = -1,
- X509_ENTRY = 0,
- PRECERT_ENTRY = 1
-} log_entry_type_t;
-
-typedef enum {
- UNSET_VERSION = -1,
- SCT_V1 = 0
-} sct_version_t;
-
-typedef struct {
- sct_version_t version;
- /* If version is not SCT_V1 this contains the encoded SCT */
- unsigned char *sct;
- size_t sct_len;
- /*
- * If version is SCT_V1, fields below contain components of the SCT.
- * "log_id", "ext" and "sig" point to buffers allocated with
- * OPENSSL_malloc().
- */
- unsigned char *log_id;
- size_t log_id_len;
-
- /*
- * Note, we cannot distinguish between an unset timestamp, and one
- * that is set to 0. However since CT didn't exist in 1970, no real
- * SCT should ever be set as such.
- */
- uint64_t timestamp;
- unsigned char *ext;
- size_t ext_len;
- /* TODO(robpercival): Extract the following 4 fields into a struct */
- unsigned char hash_alg;
- unsigned char sig_alg;
- unsigned char *sig;
- size_t sig_len;
- /* Log entry type */
- log_entry_type_t entry_type;
-} SCT;
-
-DEFINE_STACK_OF(SCT)
-
-extern const X509V3_EXT_METHOD v3_ct_scts[];
-
-/*
- * Allocate new SCT.
- * Caller is responsible for calling SCT_free when done.
- */
-SCT *SCT_new(void);
-
-/*
- * Free SCT and underlying datastructures.
- */
-void SCT_free(SCT *sct);
-
-/*
- * Set the version of an SCT.
- * Returns 1 on success, 0 if the version is unrecognized.
- */
-int SCT_set_version(SCT *sct, sct_version_t version);
-
-/*
- * Set the log entry type of an SCT.
- * Returns 1 on success.
- */
-int SCT_set_log_entry_type(SCT *sct, log_entry_type_t entry_type);
-
-/*
- * Set the log ID of an SCT to point directly to the *log_id specified.
- * The SCT takes ownership of the specified pointer.
- * Returns 1 on success.
- */
-int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
-
-/*
- * Set the log ID of an SCT.
- * This makes a copy of the log_id.
- * Returns 1 on success.
- */
-int SCT_set1_log_id(SCT *sct, const unsigned char *log_id, size_t log_id_len);
-
-/*
- * Set the timestamp of an SCT.
- */
-void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
-
-/*
- * Set the signature type of an SCT
- * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256.
- * Returns 1 on success.
- */
-int SCT_set_signature_nid(SCT *sct, int nid);
-
-/*
- * Set the extensions of an SCT to point directly to the *ext specified.
- * The SCT takes ownership of the specified pointer.
- */
-void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
-
-/*
- * Set the extensions of an SCT.
- * This takes a copy of the ext.
- * Returns 1 on success.
- */
-int SCT_set1_extensions(SCT *sct, const unsigned char *ext, size_t ext_len);
-
-/*
- * Set the signature of an SCT to point directly to the *sig specified.
- * The SCT takes ownership of the specified pointer.
- */
-void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
-
-/*
- * Set the signature of an SCT to be a copy of the *sig specified.
- * Returns 1 on success.
- */
-int SCT_set1_signature(SCT *sct, const unsigned char *sig, size_t sig_len);
-
-/*
- * Returns the version of the SCT.
- */
-sct_version_t SCT_get_version(const SCT *sct);
-
-/*
- * Returns the log entry type of the SCT.
- */
-log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
-
-/*
- * Set *log_id to point to the log id for the SCT. log_id must not be NULL.
- * The SCT retains ownership of this pointer.
- * Returns length of the data pointed to.
- */
-size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
-
-/*
- * Returns the timestamp for the SCT.
- */
-uint64_t SCT_get_timestamp(const SCT *sct);
-
-/*
- * Return the nid for the signature used by the SCT.
- * Currently NID_sha256WithRSAEncryption or NID_ecdsa_with_SHA256
- * (or NID_undef).
- */
-int SCT_get_signature_nid(const SCT *sct);
-
-/*
- * Set *ext to point to the extension data for the SCT. ext must not be NULL.
- * The SCT retains ownership of this pointer.
- * Returns length of the data pointed to.
- */
-size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
-
-/*
- * Set *sig to point to the signature for the SCT. sig must not be NULL.
- * The SCT retains ownership of this pointer.
- * Returns length of the data pointed to.
- */
-size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
-
-/*
- * Pretty-print debug information about a SCT, indented as specified.
- */
-void SCT_print(SCT *sct, BIO *out, int indent);
-
-/*
- * Does this SCT have the minimum fields populated to be valid?
- * Returns 1 if so, 0 otherwise.
- * This does not verify the SCT signature.
- */
-int SCT_is_valid(const SCT *sct);
-
-/*
- * Is the signature of this SCT valid?
- * Returns 1 if so, 0 otherwise.
- * This checks that the signature and hash algorithms are supported and that the
- * signature field is set.
- */
-int SCT_signature_is_valid(const SCT *sct);
-
-/*
- * Free a stack of SCTs, and the underlying SCTs themselves.
- * Intended to be compatible with X509V3_EXT_FREE.
- */
-void SCT_LIST_free(STACK_OF(SCT) *a);
-
-/*
- * Serialize (to TLS format) a stack of SCTs and return the length.
- * "a" must not be NULL.
- * If "pp" is NULL, just return the length of what would have been serialized.
- * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
- * for data that caller is responsible for freeing (only if function returns
- * successfully).
- * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
- * that "*pp" is large enough to accept all of the serializied data.
- * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
- * on success.
- */
-int i2o_SCT_LIST(STACK_OF(SCT) *a, unsigned char **pp);
-
-/*
-* Parses an SCT signature in TLS format and populates the |sct| with it.
-* |in| should be a pointer to a string contianing the TLS-format signature.
-* |in| will be advanced to the end of the signature if parsing succeeds.
-* |len| should be the length of the signature in |in|.
-* Returns the number of bytes parsed, or a negative integer if an error occurs.
-*/
-int o2i_SCT_signature(SCT *sct, const unsigned char **in, size_t len);
-
-/*
- * Parses an SCT in TLS format and returns it.
- * If |psct| is not null, it will end up pointing to the parsed SCT. If it
- * already points to a non-null pointer, the pointer will be free'd.
- * |in| should be a pointer to a string contianing the TLS-format SCT.
- * |in| will be advanced to the end of the SCT if parsing succeeds.
- * |len| should be the length of the SCT in |in|.
- * Returns NULL if an error occurs.
- * If the SCT is an unsupported version, only the SCT's 'sct' and 'sct_len'
- * fields will be populated (with |in| and |len| respectively).
- */
-SCT *o2i_SCT(SCT **psct, const unsigned char **in, size_t len);
-
-/*
-* Converts an |sct| signature into TLS format and writes it to |out|.
-* If |out| is null, no signature will be output but the length will be returned.
-* If |out| points to a null pointer, a string will be allocated to hold the
-* TLS-format signature. It is the responsibility of the caller to free it.
-* If |out| points to an allocated string, the signature will be written to it.
-* The length of the signature in TLS format will be returned.
-*/
-int i2o_SCT_signature(const SCT *sct, unsigned char **out);
-
-/*
- * Converts an |sct| into TLS format and writes it to |out|.
- * If |out| is null, no SCT will be output but the length will still be returned.
- * If |out| points to a null pointer, a string will be allocated to hold the
- * TLS-format SCT. It is the responsibility of the caller to free it.
- * If |out| points to an allocated string, the TLS-format SCT will be written
- * to it.
- * The length of the SCT in TLS format will be returned.
- */
-int i2o_SCT(const SCT *sct, unsigned char **out);
-
-/*
- * Convert TLS format SCT list to a stack of SCTs.
- * If "a" or "*a" is NULL, a new stack will be created that the caller is
- * responsible for freeing (by calling SCT_LIST_free).
- * "**pp" and "*pp" must not be NULL.
- * Upon success, "*pp" will point to after the last bytes read, and a stack
- * will be returned.
- * Upon failure, a NULL pointer will be returned, and the position of "*p" is
- * not defined.
- */
-STACK_OF(SCT) *o2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
- size_t len);
-
+# ifdef OPENSSL_NO_CT
+# error CT is disabled.
# endif
-/* BEGIN ERROR CODES */
-/*
- * The following lines are auto generated by the script mkerr.pl. Any changes
- * made after this point may be overwritten when the script is next run.
- */
-void ERR_load_CT_strings(void);
+# include <openssl/ct.h>
+# include <openssl/x509v3.h>
-/* Error codes for the CT functions. */
+/* Handlers for Certificate Transparency X509v3/OCSP extensions */
+extern const X509V3_EXT_METHOD v3_ct_scts[];
-/* Function codes. */
-# define CT_F_D2I_SCT_LIST 105
-# define CT_F_I2D_SCT_LIST 106
-# define CT_F_I2O_SCT 107
-# define CT_F_I2O_SCT_LIST 108
-# define CT_F_I2O_SCT_SIGNATURE 109
-# define CT_F_O2I_SCT 110
-# define CT_F_O2I_SCT_LIST 111
-# define CT_F_O2I_SCT_SIGNATURE 112
-# define CT_F_SCT_NEW 100
-# define CT_F_SCT_SET0_LOG_ID 101
-# define CT_F_SCT_SET1_EXTENSIONS 114
-# define CT_F_SCT_SET1_LOG_ID 115
-# define CT_F_SCT_SET1_SIGNATURE 116
-# define CT_F_SCT_SET_LOG_ENTRY_TYPE 102
-# define CT_F_SCT_SET_SIGNATURE_NID 103
-# define CT_F_SCT_SET_VERSION 104
-# define CT_F_SCT_SIGNATURE_IS_VALID 113
-
-/* Reason codes. */
-# define CT_R_INVALID_LOG_ID_LENGTH 100
-# define CT_R_SCT_INVALID 104
-# define CT_R_SCT_INVALID_SIGNATURE 107
-# define CT_R_SCT_LIST_INVALID 105
-# define CT_R_SCT_NOT_SET 106
-# define CT_R_UNRECOGNIZED_SIGNATURE_NID 101
-# define CT_R_UNSUPPORTED_ENTRY_TYPE 102
-# define CT_R_UNSUPPORTED_VERSION 103
-
-#ifdef __cplusplus
+# ifdef __cplusplus
}
-#endif
-#endif
+# endif
+
+#endif /* HEADER_CT_INT_H */
diff --git a/include/openssl/ct.h b/include/openssl/ct.h
new file mode 100644
index 0000000..0ea051b
--- /dev/null
+++ b/include/openssl/ct.h
@@ -0,0 +1,377 @@
+/*
+* Public API for Certificate Transparency (CT).
+* Written by Rob Percival (robpercival@google.com) for the OpenSSL project.
+*/
+/* ====================================================================
+* Copyright (c) 2016 The OpenSSL Project. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* 1. Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+*
+* 2. Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in
+* the documentation and/or other materials provided with the
+* distribution.
+*
+* 3. All advertising materials mentioning features or use of this
+* software must display the following acknowledgment:
+* "This product includes software developed by the OpenSSL Project
+* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
+*
+* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+* endorse or promote products derived from this software without
+* prior written permission. For written permission, please contact
+* licensing@OpenSSL.org.
+*
+* 5. Products derived from this software may not be called "OpenSSL"
+* nor may "OpenSSL" appear in their names without prior written
+* permission of the OpenSSL Project.
+*
+* 6. Redistributions of any form whatsoever must retain the following
+* acknowledgment:
+* "This product includes software developed by the OpenSSL Project
+* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
+*
+* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
+* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+* OF THE POSSIBILITY OF SUCH DAMAGE.
+* ====================================================================
+*/
+
+#ifdef OPENSSL_NO_CT
+# error "CT is disabled"
+#endif
+
+#ifndef HEADER_CT_H
+# define HEADER_CT_H
+
+# include <openssl/safestack.h>
+# include <openssl/x509.h>
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+/* Minimum RSA key size, from RFC6962 */
+# define SCT_MIN_RSA_BITS 2048
+
+/* All hashes are SHA256 in v1 of Certificate Transparency */
+# define CT_V1_HASHLEN SHA256_DIGEST_LENGTH
+
+typedef enum {
+ CT_LOG_ENTRY_TYPE_NOT_SET = -1,
+ CT_LOG_ENTRY_TYPE_X509 = 0,
+ CT_LOG_ENTRY_TYPE_PRECERT = 1
+} ct_log_entry_type_t;
+
+typedef enum {
+ SCT_VERSION_NOT_SET = -1,
+ SCT_VERSION_V1 = 0
+} sct_version_t;
+
+/*******************
+ * Data structures *
+ *******************/
+
+/* Signed Certificate Timestamp (SCT) */
+typedef struct sct_st SCT;
+DEFINE_STACK_OF(SCT)
+
+/*****************
+ * SCT functions *
+ *****************/
+
+/*
+ * Creates a new, blank SCT.
+ * The caller is responsible for calling SCT_free when finished with the SCT.
+ */
+SCT *SCT_new(void);
+
+/*
+ * Frees the SCT and the underlying data structures.
+ */
+void SCT_free(SCT *sct);
+
+/*
+ * Free a stack of SCTs, and the underlying SCTs themselves.
+ * Intended to be compatible with X509V3_EXT_FREE.
+ */
+void SCT_LIST_free(STACK_OF(SCT) *a);
+
+/*
+ * Returns the version of the SCT.
+ */
+sct_version_t SCT_get_version(const SCT *sct);
+
+/*
+ * Set the version of an SCT.
+ * Returns 1 on success, 0 if the version is unrecognized.
+ */
+int SCT_set_version(SCT *sct, sct_version_t version);
+
+/*
+ * Returns the log entry type of the SCT.
+ */
+ct_log_entry_type_t SCT_get_log_entry_type(const SCT *sct);
+
+/*
+ * Set the log entry type of an SCT.
+ * Returns 1 on success.
+ */
+int SCT_set_log_entry_type(SCT *sct, ct_log_entry_type_t entry_type);
+
+/*
+ * Gets the ID of the log that an SCT came from.
+ * Ownership of the log ID remains with the SCT.
+ * Returns the length of the log ID.
+ */
+size_t SCT_get0_log_id(const SCT *sct, unsigned char **log_id);
+
+/*
+ * Set the log ID of an SCT to point directly to the *log_id specified.
+ * The SCT takes ownership of the specified pointer.
+ * Returns 1 on success.
+ */
+int SCT_set0_log_id(SCT *sct, unsigned char *log_id, size_t log_id_len);
+
+/*
+ * Set the log ID of an SCT.
+ * This makes a copy of the log_id.
+ * Returns 1 on success.
+ */
+int SCT_set1_log_id(SCT *sct, const unsigned char *log_id, size_t log_id_len);
+
+/*
+ * Returns the timestamp for the SCT (epoch time in milliseconds).
+ */
+uint64_t SCT_get_timestamp(const SCT *sct);
+
+/*
+ * Set the timestamp of an SCT (epoch time in milliseconds).
+ */
+void SCT_set_timestamp(SCT *sct, uint64_t timestamp);
+
+/*
+ * Return the NID for the signature used by the SCT.
+ * For CT v1, this will be either NID_sha256WithRSAEncryption or
+ * NID_ecdsa_with_SHA256 (or NID_undef if incorrect/unset).
+ */
+int SCT_get_signature_nid(const SCT *sct);
+
+/*
+ * Set the signature type of an SCT
+ * For CT v1, this should be either NID_sha256WithRSAEncryption or
+ * NID_ecdsa_with_SHA256.
+ * Returns 1 on success.
+ */
+int SCT_set_signature_nid(SCT *sct, int nid);
+
+/*
+ * Set *ext to point to the extension data for the SCT. ext must not be NULL.
+ * The SCT retains ownership of this pointer.
+ * Returns length of the data pointed to.
+ */
+size_t SCT_get0_extensions(const SCT *sct, unsigned char **ext);
+
+/*
+ * Set the extensions of an SCT to point directly to the *ext specified.
+ * The SCT takes ownership of the specified pointer.
+ */
+void SCT_set0_extensions(SCT *sct, unsigned char *ext, size_t ext_len);
+
+/*
+ * Set the extensions of an SCT.
+ * This takes a copy of the ext.
+ * Returns 1 on success.
+ */
+int SCT_set1_extensions(SCT *sct, const unsigned char *ext, size_t ext_len);
+
+/*
+ * Set *sig to point to the signature for the SCT. sig must not be NULL.
+ * The SCT retains ownership of this pointer.
+ * Returns length of the data pointed to.
+ */
+size_t SCT_get0_signature(const SCT *sct, unsigned char **sig);
+
+/*
+ * Set the signature of an SCT to point directly to the *sig specified.
+ * The SCT takes ownership of the specified pointer.
+ */
+void SCT_set0_signature(SCT *sct, unsigned char *sig, size_t sig_len);
+
+/*
+ * Set the signature of an SCT to be a copy of the *sig specified.
+ * Returns 1 on success.
+ */
+int SCT_set1_signature(SCT *sct, const unsigned char *sig, size_t sig_len);
+
+/*
+ * Pretty-prints an |sct| to |out|.
+ * It will be indented by the number of spaces specified by |indent|.
+ */
+void SCT_print(const SCT *sct, BIO *out, int indent);
+
+/*
+ * Pretty-prints an |sct_list| to |out|.
+ * It will be indented by the number of spaces specified by |indent|.
+ * SCTs will be delimited by |separator|.
+ */
+void SCT_LIST_print(const STACK_OF(SCT) *sct_list, BIO *out, int indent,
+ const char *separator);
+
+/*********************************
+ * SCT parsing and serialisation *
+ *********************************/
+
+/*
+ * Serialize (to TLS format) a stack of SCTs and return the length.
+ * "a" must not be NULL.
+ * If "pp" is NULL, just return the length of what would have been serialized.
+ * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
+ * for data that caller is responsible for freeing (only if function returns
+ * successfully).
+ * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
+ * that "*pp" is large enough to accept all of the serializied data.
+ * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
+ * on success.
+ */
+int i2o_SCT_LIST(const STACK_OF(SCT) *a, unsigned char **pp);
+
+/*
+ * Convert TLS format SCT list to a stack of SCTs.
+ * If "a" or "*a" is NULL, a new stack will be created that the caller is
+ * responsible for freeing (by calling SCT_LIST_free).
+ * "**pp" and "*pp" must not be NULL.
+ * Upon success, "*pp" will point to after the last bytes read, and a stack
+ * will be returned.
+ * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
+ * not defined.
+ */
+STACK_OF(SCT) *o2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
+ size_t len);
+
+/*
+ * Serialize (to DER format) a stack of SCTs and return the length.
+ * "a" must not be NULL.
+ * If "pp" is NULL, just returns the length of what would have been serialized.
+ * If "pp" is not NULL and "*pp" is null, function will allocate a new pointer
+ * for data that caller is responsible for freeing (only if function returns
+ * successfully).
+ * If "pp" is NULL and "*pp" is not NULL, caller is responsible for ensuring
+ * that "*pp" is large enough to accept all of the serializied data.
+ * Returns < 0 on error, >= 0 indicating bytes written (or would have been)
+ * on success.
+ */
+int i2d_SCT_LIST(STACK_OF(SCT) *a, unsigned char **pp);
+
+/*
+ * Parses an SCT list in DER format and returns it.
+ * If "a" or "*a" is NULL, a new stack will be created that the caller is
+ * responsible for freeing (by calling SCT_LIST_free).
+ * "**pp" and "*pp" must not be NULL.
+ * Upon success, "*pp" will point to after the last bytes read, and a stack
+ * will be returned.
+ * Upon failure, a NULL pointer will be returned, and the position of "*pp" is
+ * not defined.
+ */
+STACK_OF(SCT) *d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp,
+ long len);
+
+/*
+ * Serialize (to TLS format) an |sct| and write it to |out|.
+ * If |out| is null, no SCT will be output but the length will still be returned.
+ * If |out| points to a null pointer, a string will be allocated to hold the
+ * TLS-format SCT. It is the responsibility of the caller to free it.
+ * If |out| points to an allocated string, the TLS-format SCT will be written
+ * to it.
+ * The length of the SCT in TLS format will be returned.
+ */
+int i2o_SCT(const SCT *sct, unsigned char **out);
+
+/*
+ * Parses an SCT in TLS format and returns it.
+ * If |psct| is not null, it will end up pointing to the parsed SCT. If it
+ * already points to a non-null pointer, the pointer will be free'd.
+ * |in| should be a pointer to a string contianing the TLS-format SCT.
+ * |in| will be advanced to the end of the SCT if parsing succeeds.
+ * |len| should be the length of the SCT in |in|.
+ * Returns NULL if an error occurs.
+ * If the SCT is an unsupported version, only the SCT's 'sct' and 'sct_len'
+ * fields will be populated (with |in| and |len| respectively).
+ */
+SCT *o2i_SCT(SCT **psct, const unsigned char **in, size_t len);
+
+/*
+* Serialize (to TLS format) an |sct| signature and write it to |out|.
+* If |out| is null, no signature will be output but the length will be returned.
+* If |out| points to a null pointer, a string will be allocated to hold the
+* TLS-format signature. It is the responsibility of the caller to free it.
+* If |out| points to an allocated string, the signature will be written to it.
+* The length of the signature in TLS format will be returned.
+*/
+int i2o_SCT_signature(const SCT *sct, unsigned char **out);
+
+/*
+* Parses an SCT signature in TLS format and populates the |sct| with it.
+* |in| should be a pointer to a string contianing the TLS-format signature.
+* |in| will be advanced to the end of the signature if parsing succeeds.
+* |len| should be the length of the signature in |in|.
+* Returns the number of bytes parsed, or a negative integer if an error occurs.
+*/
+int o2i_SCT_signature(SCT *sct, const unsigned char **in, size_t len);
+
+/* BEGIN ERROR CODES */
+/*
+ * The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+void ERR_load_CT_strings(void);
+
+/* Error codes for the CT functions. */
+
+/* Function codes. */
+# define CT_F_D2I_SCT_LIST 105
+# define CT_F_I2D_SCT_LIST 106
+# define CT_F_I2O_SCT 107
+# define CT_F_I2O_SCT_LIST 108
+# define CT_F_I2O_SCT_SIGNATURE 109
+# define CT_F_O2I_SCT 110
+# define CT_F_O2I_SCT_LIST 111
+# define CT_F_O2I_SCT_SIGNATURE 112
+# define CT_F_SCT_NEW 100
+# define CT_F_SCT_SET0_LOG_ID 101
+# define CT_F_SCT_SET1_EXTENSIONS 114
+# define CT_F_SCT_SET1_LOG_ID 115
+# define CT_F_SCT_SET1_SIGNATURE 116
+# define CT_F_SCT_SET_LOG_ENTRY_TYPE 102
+# define CT_F_SCT_SET_SIGNATURE_NID 103
+# define CT_F_SCT_SET_VERSION 104
+# define CT_F_SCT_SIGNATURE_IS_VALID 113
+
+/* Reason codes. */
+# define CT_R_INVALID_LOG_ID_LENGTH 100
+# define CT_R_SCT_INVALID 104
+# define CT_R_SCT_INVALID_SIGNATURE 107
+# define CT_R_SCT_LIST_INVALID 105
+# define CT_R_SCT_NOT_SET 106
+# define CT_R_UNRECOGNIZED_SIGNATURE_NID 101
+# define CT_R_UNSUPPORTED_ENTRY_TYPE 102
+# define CT_R_UNSUPPORTED_VERSION 103
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/test/ct_test.c b/test/ct_test.c
index dd0d8d2..ac739ff 100644
--- a/test/ct_test.c
+++ b/test/ct_test.c
@@ -58,9 +58,8 @@
#include <stdlib.h>
#include <string.h>
-#include "internal/ct_int.h"
+#include <openssl/ct.h>
#include <openssl/err.h>
-#include <openssl/safestack.h>
#include <openssl/ssl.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
diff --git a/util/libeay.num b/util/libeay.num
index 3eaa997..9323df0 100755
--- a/util/libeay.num
+++ b/util/libeay.num
@@ -4726,3 +4726,34 @@
CRYPTO_THREAD_get_current_id 5230 1_1_0 EXIST::FUNCTION:
CRYPTO_THREAD_compare_id 5231 1_1_0 EXIST::FUNCTION:
CRYPTO_THREAD_run_once 5232 1_1_0 EXIST::FUNCTION:
+SCT_get0_extensions 5233 1_1_0 EXIST::FUNCTION:
+SCT_get0_log_id 5234 1_1_0 EXIST::FUNCTION:
+o2i_SCT_signature 5235 1_1_0 EXIST::FUNCTION:
+i2o_SCT_signature 5236 1_1_0 EXIST::FUNCTION:
+SCT_set_timestamp 5237 1_1_0 EXIST::FUNCTION:
+i2o_SCT_LIST 5238 1_1_0 EXIST::FUNCTION:
+SCT_get_version 5239 1_1_0 EXIST::FUNCTION:
+i2d_SCT_LIST 5240 1_1_0 EXIST::FUNCTION:
+SCT_set1_log_id 5241 1_1_0 EXIST::FUNCTION:
+SCT_new 5242 1_1_0 EXIST::FUNCTION:
+SCT_get_signature_nid 5243 1_1_0 EXIST::FUNCTION:
+SCT_set0_extensions 5244 1_1_0 EXIST::FUNCTION:
+SCT_print 5245 1_1_0 EXIST::FUNCTION:
+SCT_get_timestamp 5246 1_1_0 EXIST::FUNCTION:
+SCT_set0_signature 5247 1_1_0 EXIST::FUNCTION:
+o2i_SCT 5248 1_1_0 EXIST::FUNCTION:
+SCT_set1_signature 5249 1_1_0 EXIST::FUNCTION:
+ERR_load_CT_strings 5250 1_1_0 EXIST::FUNCTION:
+SCT_set_signature_nid 5251 1_1_0 EXIST::FUNCTION:
+SCT_free 5252 1_1_0 EXIST::FUNCTION:
+SCT_set1_extensions 5253 1_1_0 EXIST::FUNCTION:
+SCT_set0_log_id 5254 1_1_0 EXIST::FUNCTION:
+d2i_SCT_LIST 5255 1_1_0 EXIST::FUNCTION:
+SCT_set_log_entry_type 5256 1_1_0 EXIST::FUNCTION:
+SCT_LIST_print 5257 1_1_0 EXIST::FUNCTION:
+SCT_get0_signature 5258 1_1_0 EXIST::FUNCTION:
+i2o_SCT 5259 1_1_0 EXIST::FUNCTION:
+o2i_SCT_LIST 5260 1_1_0 EXIST::FUNCTION:
+SCT_set_version 5261 1_1_0 EXIST::FUNCTION:
+SCT_LIST_free 5262 1_1_0 EXIST::FUNCTION:
+SCT_get_log_entry_type 5263 1_1_0 EXIST::FUNCTION:
diff --git a/util/mkdef.pl b/util/mkdef.pl
index a7abfd2..a11b008 100755
--- a/util/mkdef.pl
+++ b/util/mkdef.pl
@@ -90,8 +90,8 @@
"STATIC_ENGINE", "ENGINE", "HW", "GMP",
# Entropy Gathering
"EGD",
- # X.509v3 Signed Certificate Timestamps
- "SCT",
+ # Certificate Transparency
+ "CT",
# RFC3779
"RFC3779",
# TLS
@@ -294,6 +294,7 @@
$crypto.=" include/openssl/srp.h";
$crypto.=" include/openssl/modes.h";
$crypto.=" include/openssl/async.h";
+$crypto.=" include/openssl/ct.h";
my $symhacks="include/openssl/symhacks.h";
