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[tor-commits] [tor/master] Move the pk-digest functions into crypto_rsa.[ch].
commit f9f0dd5b9abff894e9a539aea4db61a38fcf9735
Author: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
Date: Fri Feb 16 11:32:55 2018 +0100
Move the pk-digest functions into crypto_rsa.[ch].
We moved the crypto_pk_* digest functions into crypto_rsa.[ch] because they fit
better with the RSA module.
Follows #24658.
Signed-off-by: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
---
src/common/crypto_digest.c | 118 ---------------------------------------------
src/common/crypto_digest.h | 13 +----
src/common/crypto_rsa.c | 116 ++++++++++++++++++++++++++++++++++++++++++++
src/common/crypto_rsa.h | 8 +++
src/common/tortls.h | 2 +-
5 files changed, 127 insertions(+), 130 deletions(-)
diff --git a/src/common/crypto_digest.c b/src/common/crypto_digest.c
index 149b3a984..36027cbe1 100644
--- a/src/common/crypto_digest.c
+++ b/src/common/crypto_digest.c
@@ -23,124 +23,6 @@ ENABLE_GCC_WARNING(redundant-decls)
#include "container.h"
-/* public key crypto digest functions */
-
-/** Check a siglen-byte long signature at <b>sig</b> against
- * <b>datalen</b> bytes of data at <b>data</b>, using the public key
- * in <b>env</b>. Return 0 if <b>sig</b> is a correct signature for
- * SHA1(data). Else return -1.
- */
-MOCK_IMPL(int,
-crypto_pk_public_checksig_digest,(crypto_pk_t *env, const char *data,
- size_t datalen, const char *sig,
- size_t siglen))
-{
- char digest[DIGEST_LEN];
- char *buf;
- size_t buflen;
- int r;
-
- tor_assert(env);
- tor_assert(data);
- tor_assert(sig);
- tor_assert(datalen < SIZE_T_CEILING);
- tor_assert(siglen < SIZE_T_CEILING);
-
- if (crypto_digest(digest,data,datalen)<0) {
- log_warn(LD_BUG, "couldn't compute digest");
- return -1;
- }
- buflen = crypto_pk_keysize(env);
- buf = tor_malloc(buflen);
- r = crypto_pk_public_checksig(env,buf,buflen,sig,siglen);
- if (r != DIGEST_LEN) {
- log_warn(LD_CRYPTO, "Invalid signature");
- tor_free(buf);
- return -1;
- }
- if (tor_memneq(buf, digest, DIGEST_LEN)) {
- log_warn(LD_CRYPTO, "Signature mismatched with digest.");
- tor_free(buf);
- return -1;
- }
- tor_free(buf);
-
- return 0;
-}
-
-/** Compute a SHA1 digest of <b>fromlen</b> bytes of data stored at
- * <b>from</b>; sign the data with the private key in <b>env</b>, and
- * store it in <b>to</b>. Return the number of bytes written on
- * success, and -1 on failure.
- *
- * <b>tolen</b> is the number of writable bytes in <b>to</b>, and must be
- * at least the length of the modulus of <b>env</b>.
- */
-int
-crypto_pk_private_sign_digest(crypto_pk_t *env, char *to, size_t tolen,
- const char *from, size_t fromlen)
-{
- int r;
- char digest[DIGEST_LEN];
- if (crypto_digest(digest,from,fromlen)<0)
- return -1;
- r = crypto_pk_private_sign(env,to,tolen,digest,DIGEST_LEN);
- memwipe(digest, 0, sizeof(digest));
- return r;
-}
-
-/** Given a private or public key <b>pk</b>, put a SHA1 hash of the
- * public key into <b>digest_out</b> (must have DIGEST_LEN bytes of space).
- * Return 0 on success, -1 on failure.
- */
-int
-crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out)
-{
- char *buf;
- size_t buflen;
- int len;
- int rv = -1;
-
- buflen = crypto_pk_keysize(pk)*2;
- buf = tor_malloc(buflen);
- len = crypto_pk_asn1_encode(pk, buf, buflen);
- if (len < 0)
- goto done;
-
- if (crypto_digest(digest_out, buf, len) < 0)
- goto done;
-
- rv = 0;
- done:
- tor_free(buf);
- return rv;
-}
-
-/** Compute all digests of the DER encoding of <b>pk</b>, and store them
- * in <b>digests_out</b>. Return 0 on success, -1 on failure. */
-int
-crypto_pk_get_common_digests(crypto_pk_t *pk, common_digests_t *digests_out)
-{
- char *buf;
- size_t buflen;
- int len;
- int rv = -1;
-
- buflen = crypto_pk_keysize(pk)*2;
- buf = tor_malloc(buflen);
- len = crypto_pk_asn1_encode(pk, buf, buflen);
- if (len < 0)
- goto done;
-
- if (crypto_common_digests(digests_out, (char*)buf, len) < 0)
- goto done;
-
- rv = 0;
- done:
- tor_free(buf);
- return rv;
-}
-
/* Crypto digest functions */
/** Compute the SHA1 digest of the <b>len</b> bytes on data stored in
diff --git a/src/common/crypto_digest.h b/src/common/crypto_digest.h
index a716209a7..17daac9c3 100644
--- a/src/common/crypto_digest.h
+++ b/src/common/crypto_digest.h
@@ -14,7 +14,8 @@
#define TOR_CRYPTO_DIGEST_H
#include <stdio.h>
-#include "crypto_rsa.h"
+
+#include "crypto_curve25519.h"
/** Length of the output of our message digest. */
#define DIGEST_LEN 20
@@ -69,16 +70,6 @@ typedef struct {
typedef struct crypto_digest_t crypto_digest_t;
typedef struct crypto_xof_t crypto_xof_t;
-/* public key crypto digest */
-MOCK_DECL(int, crypto_pk_public_checksig_digest,(crypto_pk_t *env,
- const char *data, size_t datalen,
- const char *sig, size_t siglen));
-int crypto_pk_private_sign_digest(crypto_pk_t *env, char *to, size_t tolen,
- const char *from, size_t fromlen);
-int crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out);
-int crypto_pk_get_common_digests(crypto_pk_t *pk,
- common_digests_t *digests_out);
-
/* SHA-1 and other digests */
int crypto_digest(char *digest, const char *m, size_t len);
int crypto_digest256(char *digest, const char *m, size_t len,
diff --git a/src/common/crypto_rsa.c b/src/common/crypto_rsa.c
index 2090b2e65..d269d28f3 100644
--- a/src/common/crypto_rsa.c
+++ b/src/common/crypto_rsa.c
@@ -850,6 +850,122 @@ crypto_pk_get_hashed_fingerprint(crypto_pk_t *pk, char *fp_out)
return 0;
}
+/** Check a siglen-byte long signature at <b>sig</b> against
+ * <b>datalen</b> bytes of data at <b>data</b>, using the public key
+ * in <b>env</b>. Return 0 if <b>sig</b> is a correct signature for
+ * SHA1(data). Else return -1.
+ */
+MOCK_IMPL(int,
+crypto_pk_public_checksig_digest,(crypto_pk_t *env, const char *data,
+ size_t datalen, const char *sig,
+ size_t siglen))
+{
+ char digest[DIGEST_LEN];
+ char *buf;
+ size_t buflen;
+ int r;
+
+ tor_assert(env);
+ tor_assert(data);
+ tor_assert(sig);
+ tor_assert(datalen < SIZE_T_CEILING);
+ tor_assert(siglen < SIZE_T_CEILING);
+
+ if (crypto_digest(digest,data,datalen)<0) {
+ log_warn(LD_BUG, "couldn't compute digest");
+ return -1;
+ }
+ buflen = crypto_pk_keysize(env);
+ buf = tor_malloc(buflen);
+ r = crypto_pk_public_checksig(env,buf,buflen,sig,siglen);
+ if (r != DIGEST_LEN) {
+ log_warn(LD_CRYPTO, "Invalid signature");
+ tor_free(buf);
+ return -1;
+ }
+ if (tor_memneq(buf, digest, DIGEST_LEN)) {
+ log_warn(LD_CRYPTO, "Signature mismatched with digest.");
+ tor_free(buf);
+ return -1;
+ }
+ tor_free(buf);
+
+ return 0;
+}
+
+/** Compute a SHA1 digest of <b>fromlen</b> bytes of data stored at
+ * <b>from</b>; sign the data with the private key in <b>env</b>, and
+ * store it in <b>to</b>. Return the number of bytes written on
+ * success, and -1 on failure.
+ *
+ * <b>tolen</b> is the number of writable bytes in <b>to</b>, and must be
+ * at least the length of the modulus of <b>env</b>.
+ */
+int
+crypto_pk_private_sign_digest(crypto_pk_t *env, char *to, size_t tolen,
+ const char *from, size_t fromlen)
+{
+ int r;
+ char digest[DIGEST_LEN];
+ if (crypto_digest(digest,from,fromlen)<0)
+ return -1;
+ r = crypto_pk_private_sign(env,to,tolen,digest,DIGEST_LEN);
+ memwipe(digest, 0, sizeof(digest));
+ return r;
+}
+
+/** Given a private or public key <b>pk</b>, put a SHA1 hash of the
+ * public key into <b>digest_out</b> (must have DIGEST_LEN bytes of space).
+ * Return 0 on success, -1 on failure.
+ */
+int
+crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out)
+{
+ char *buf;
+ size_t buflen;
+ int len;
+ int rv = -1;
+
+ buflen = crypto_pk_keysize(pk)*2;
+ buf = tor_malloc(buflen);
+ len = crypto_pk_asn1_encode(pk, buf, buflen);
+ if (len < 0)
+ goto done;
+
+ if (crypto_digest(digest_out, buf, len) < 0)
+ goto done;
+
+ rv = 0;
+ done:
+ tor_free(buf);
+ return rv;
+}
+
+/** Compute all digests of the DER encoding of <b>pk</b>, and store them
+ * in <b>digests_out</b>. Return 0 on success, -1 on failure. */
+int
+crypto_pk_get_common_digests(crypto_pk_t *pk, common_digests_t *digests_out)
+{
+ char *buf;
+ size_t buflen;
+ int len;
+ int rv = -1;
+
+ buflen = crypto_pk_keysize(pk)*2;
+ buf = tor_malloc(buflen);
+ len = crypto_pk_asn1_encode(pk, buf, buflen);
+ if (len < 0)
+ goto done;
+
+ if (crypto_common_digests(digests_out, (char*)buf, len) < 0)
+ goto done;
+
+ rv = 0;
+ done:
+ tor_free(buf);
+ return rv;
+}
+
/** Given a crypto_pk_t <b>pk</b>, allocate a new buffer containing the
* Base64 encoding of the DER representation of the private key as a NUL
* terminated string, and return it via <b>priv_out</b>. Return 0 on
diff --git a/src/common/crypto_rsa.h b/src/common/crypto_rsa.h
index 5b9025c62..8d65597d0 100644
--- a/src/common/crypto_rsa.h
+++ b/src/common/crypto_rsa.h
@@ -15,6 +15,7 @@
#include "orconfig.h"
+#include "crypto_digest.h"
#include <stdio.h>
#include "torint.h"
#include "testsupport.h"
@@ -84,6 +85,13 @@ crypto_pk_t *crypto_pk_asn1_decode(const char *str, size_t len);
int crypto_pk_get_fingerprint(crypto_pk_t *pk, char *fp_out,int add_space);
int crypto_pk_get_hashed_fingerprint(crypto_pk_t *pk, char *fp_out);
+MOCK_DECL(int, crypto_pk_public_checksig_digest,(crypto_pk_t *env,
+ const char *data, size_t datalen, const char *sig, size_t siglen));
+int crypto_pk_private_sign_digest(crypto_pk_t *env, char *to, size_t tolen,
+ const char *from, size_t fromlen);
+int crypto_pk_get_digest(const crypto_pk_t *pk, char *digest_out);
+int crypto_pk_get_common_digests(crypto_pk_t *pk,
+ common_digests_t *digests_out);
int crypto_pk_base64_encode(const crypto_pk_t *pk, char **priv_out);
crypto_pk_t *crypto_pk_base64_decode(const char *str, size_t len);
diff --git a/src/common/tortls.h b/src/common/tortls.h
index 161b8e73a..7c867bfff 100644
--- a/src/common/tortls.h
+++ b/src/common/tortls.h
@@ -11,7 +11,7 @@
* \brief Headers for tortls.c
**/
-#include "crypto_digest.h"
+#include "crypto_rsa.h"
#include "compat_openssl.h"
#include "compat.h"
#include "testsupport.h"
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