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Evp pkey nokex #453

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Evp pkey nokex #453

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c56e886
Applying Fedora patch openssh-9.3p1-merged-openssl-evp.patch
beldmit Sep 27, 2023
760a5da
Applying Fedora patch openssh-9.0p1-evp-fips-dh.patch
beldmit Sep 27, 2023
a09be89
Applying Fedora patch openssh-9.0p1-evp-fips-ecdh.patch
beldmit Sep 27, 2023
0b732c0
Using EVP_PKEY instead of RSA/EC_KEY in sshkey
beldmit Oct 2, 2023
c2d5735
Useless variables
beldmit Oct 6, 2023
9d7a11e
Build --without-openssl
beldmit Oct 6, 2023
f5d8d0e
Make DH/ECDH KEX buildable on RHEL8
beldmit Oct 10, 2023
723ede2
Buildable on RHEL 8. Passing tests on RHEL 9.
beldmit Oct 11, 2023
af8978a
Adjust tests for OpenSSL 1.1.1
beldmit Oct 11, 2023
3e395c1
Revert KEX rewriting
beldmit Oct 18, 2023
a2960c6
Remove DSS changes
beldmit Oct 18, 2023
eb330fd
Reduce diff, avoid extra function renaming
beldmit Oct 19, 2023
4a19faa
Attempt to fix tests against OpenSSL <= 3.0.7
beldmit Oct 19, 2023
faf7296
Attempt to fix no-ecc
beldmit Oct 19, 2023
dfc0055
Fix gcc-11 -Werror, partially
beldmit Oct 20, 2023
5c69e3e
BoringSSL compatibility
beldmit Oct 20, 2023
0aa9381
Various warning fixes
beldmit Oct 20, 2023
2c2ad17
RSA type check
beldmit Oct 20, 2023
5b36041
Dropme! Temporary unbreak interop tests
beldmit Oct 20, 2023
97b792d
We don't use these functions
beldmit Oct 20, 2023
6daa8e2
Try to shrink the pubkey dump code
beldmit Oct 26, 2023
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6 changes: 6 additions & 0 deletions configure.ac
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Original file line number Diff line number Diff line change
Expand Up @@ -2974,6 +2974,12 @@ if test "x$openssl" = "xyes" ; then
EVP_CIPHER_CTX_set_iv \
])

# Misc versions of LibreSSL/BoringSSL API differences
AC_CHECK_FUNCS([ \
EVP_PKEY_public_check \
EVP_PKEY_private_check \
])

if test "x$openssl_engine" = "xyes" ; then
AC_MSG_CHECKING([for OpenSSL ENGINE support])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
Expand Down
16 changes: 16 additions & 0 deletions digest-openssl.c
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Original file line number Diff line number Diff line change
Expand Up @@ -64,6 +64,22 @@ const struct ssh_digest digests[] = {
{ -1, NULL, 0, NULL },
};

const EVP_MD *
ssh_digest_to_md(int digest_type)
{
switch (digest_type) {
case SSH_DIGEST_SHA1:
return EVP_sha1();
case SSH_DIGEST_SHA256:
return EVP_sha256();
case SSH_DIGEST_SHA384:
return EVP_sha384();
case SSH_DIGEST_SHA512:
return EVP_sha512();
}
return NULL;
}

static const struct ssh_digest *
ssh_digest_by_alg(int alg)
{
Expand Down
6 changes: 6 additions & 0 deletions digest.h
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Expand Up @@ -32,6 +32,12 @@
struct sshbuf;
struct ssh_digest_ctx;

#ifdef WITH_OPENSSL
#include <openssl/evp.h>
/* Converts internal digest representation to the OpenSSL one */
const EVP_MD *ssh_digest_to_md(int digest_type);
#endif

/* Looks up a digest algorithm by name */
int ssh_digest_alg_by_name(const char *name);

Expand Down
13 changes: 4 additions & 9 deletions packet.c
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Original file line number Diff line number Diff line change
Expand Up @@ -71,9 +71,6 @@
#ifdef WITH_OPENSSL
# include <openssl/bn.h>
# include <openssl/evp.h>
# ifdef OPENSSL_HAS_ECC
# include <openssl/ec.h>
# endif
#endif

#ifdef WITH_ZLIB
Expand Down Expand Up @@ -2540,9 +2537,9 @@ sshpkt_getb_froms(struct ssh *ssh, struct sshbuf **valp)
#ifdef WITH_OPENSSL
#ifdef OPENSSL_HAS_ECC
int
sshpkt_put_ec(struct ssh *ssh, const EC_POINT *v, const EC_GROUP *g)
sshpkt_put_ec(struct ssh *ssh, EVP_PKEY *pkey)
{
return sshbuf_put_ec(ssh->state->outgoing_packet, v, g);
return sshbuf_put_ecpkey(ssh->state->outgoing_packet, pkey);
}
#endif /* OPENSSL_HAS_ECC */

Expand Down Expand Up @@ -2605,13 +2602,11 @@ sshpkt_get_cstring(struct ssh *ssh, char **valp, size_t *lenp)
}

#ifdef WITH_OPENSSL
#ifdef OPENSSL_HAS_ECC
int
sshpkt_get_ec(struct ssh *ssh, EC_POINT *v, const EC_GROUP *g)
sshpkt_get_ec(struct ssh *ssh, u_char **pubkey, size_t *pubkey_len)
{
return sshbuf_get_ec(ssh->state->incoming_packet, v, g);
return sshbuf_get_string(ssh->state->incoming_packet, pubkey, pubkey_len);
}
#endif /* OPENSSL_HAS_ECC */

int
sshpkt_get_bignum2(struct ssh *ssh, BIGNUM **valp)
Expand Down
24 changes: 5 additions & 19 deletions packet.h
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Expand Up @@ -20,18 +20,9 @@

#ifdef WITH_OPENSSL
# include <openssl/bn.h>
# ifdef OPENSSL_HAS_ECC
# include <openssl/ec.h>
# else /* OPENSSL_HAS_ECC */
# define EC_KEY void
# define EC_GROUP void
# define EC_POINT void
# endif /* OPENSSL_HAS_ECC */
# include <openssl/evp.h>
#else /* WITH_OPENSSL */
# define BIGNUM void
# define EC_KEY void
# define EC_GROUP void
# define EC_POINT void
#endif /* WITH_OPENSSL */

#include <signal.h>
Expand Down Expand Up @@ -192,7 +183,9 @@ int sshpkt_put_u64(struct ssh *ssh, u_int64_t val);
int sshpkt_put_string(struct ssh *ssh, const void *v, size_t len);
int sshpkt_put_cstring(struct ssh *ssh, const void *v);
int sshpkt_put_stringb(struct ssh *ssh, const struct sshbuf *v);
int sshpkt_put_ec(struct ssh *ssh, const EC_POINT *v, const EC_GROUP *g);
#ifdef WITH_OPENSSL
int sshpkt_put_ec(struct ssh *ssh, EVP_PKEY *pkey);
#endif
int sshpkt_put_bignum2(struct ssh *ssh, const BIGNUM *v);

int sshpkt_get(struct ssh *ssh, void *valp, size_t len);
Expand All @@ -204,21 +197,14 @@ int sshpkt_get_string_direct(struct ssh *ssh, const u_char **valp, size_t *lenp)
int sshpkt_peek_string_direct(struct ssh *ssh, const u_char **valp, size_t *lenp);
int sshpkt_get_cstring(struct ssh *ssh, char **valp, size_t *lenp);
int sshpkt_getb_froms(struct ssh *ssh, struct sshbuf **valp);
int sshpkt_get_ec(struct ssh *ssh, EC_POINT *v, const EC_GROUP *g);
int sshpkt_get_ec(struct ssh *ssh, u_char **pub, size_t *publen);
int sshpkt_get_bignum2(struct ssh *ssh, BIGNUM **valp);
int sshpkt_get_end(struct ssh *ssh);
void sshpkt_fmt_connection_id(struct ssh *ssh, char *s, size_t l);
const u_char *sshpkt_ptr(struct ssh *, size_t *lenp);

#if !defined(WITH_OPENSSL)
# undef BIGNUM
# undef EC_KEY
# undef EC_GROUP
# undef EC_POINT
#elif !defined(OPENSSL_HAS_ECC)
# undef EC_KEY
# undef EC_GROUP
# undef EC_POINT
#endif

#endif /* PACKET_H */
69 changes: 66 additions & 3 deletions regress/unittests/sshbuf/test_sshbuf_getput_crypto.c
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Expand Up @@ -19,9 +19,15 @@

#include <openssl/bn.h>
#include <openssl/objects.h>
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
#include <openssl/evp.h>
#include <openssl/param_build.h>
#include <openssl/core_names.h>
#else
#ifdef OPENSSL_HAS_NISTP256
# include <openssl/ec.h>
#endif
#endif

#include "../test_helper/test_helper.h"
#include "ssherr.h"
Expand Down Expand Up @@ -51,6 +57,7 @@ sshbuf_getput_crypto_tests(void)
size_t s;
BIGNUM *bn_x, *bn_y;
int ec256_nid = NID_X9_62_prime256v1;
const char *ec256_sn = "prime256v1";
char *ec256_x = "0C828004839D0106AA59575216191357"
"34B451459DADB586677EF9DF55784999";
char *ec256_y = "4D196B50F0B4E94B3C73E3A9D4CD9DF2"
Expand All @@ -66,7 +73,17 @@ sshbuf_getput_crypto_tests(void)
0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4
};
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
EVP_PKEY *eck = NULL;
EVP_PKEY_CTX *ctx = NULL;
OSSL_PARAM_BLD *param_bld = NULL;
OSSL_PARAM *params = NULL;
EC_GROUP *g = NULL;
u_char *pubkey = NULL;
size_t pubkey_len;
#else
EC_KEY *eck;
#endif
EC_POINT *ecp;
#endif
int r;
Expand Down Expand Up @@ -223,29 +240,74 @@ sshbuf_getput_crypto_tests(void)
TEST_DONE();

#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
TEST_START("sshbuf_put_ec");
TEST_START("sshbuf_put_ecpkey");
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
param_bld = OSSL_PARAM_BLD_new();
ASSERT_PTR_NE(param_bld, NULL);
ASSERT_INT_EQ(OSSL_PARAM_BLD_push_utf8_string(param_bld,
OSSL_PKEY_PARAM_GROUP_NAME, ec256_sn, strlen(ec256_sn)), 1);
#else
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
ecp = EC_POINT_new(EC_KEY_get0_group(eck));
ASSERT_PTR_NE(ecp, NULL);
#endif
MKBN(ec256_x, bn_x);
MKBN(ec256_y, bn_y);
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
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So (this comment applies to all of the bag of ifdefs like this)

This define should not be used in this code like this. It precludes libressl from ever providing a compatible API
since both packages define OPENSSL_VERSION_NUMBER - Unless when providing 3.0 API you would prefer that we again jump the shark and sit on 0x40000000L or greater to get around this sort of ifdef mathemagics.

again, I reiterate this is doing too much at once and should just concentrate on the compatible to 1.1.1. EVP_PKEY changes, but if a define for 3.0 is to be used, please make it a define for OPENSSL 3.0 not numeric magic like this.

g = EC_GROUP_new_by_curve_name(ec256_nid);
ecp = EC_POINT_new(g);
ASSERT_PTR_NE(g, NULL);
ASSERT_INT_EQ(EC_POINT_set_affine_coordinates(
g, ecp, bn_x, bn_y, NULL), 1);
pubkey_len = EC_POINT_point2oct(g, ecp,
POINT_CONVERSION_UNCOMPRESSED, NULL, 0, NULL);
ASSERT_INT_NE(pubkey_len, 0);
pubkey = malloc(pubkey_len);
ASSERT_PTR_NE(pubkey, NULL);
ASSERT_INT_NE(EC_POINT_point2oct(g, ecp, POINT_CONVERSION_UNCOMPRESSED,
pubkey, pubkey_len, NULL), 0);
EC_GROUP_free(g);
#else
ASSERT_INT_EQ(EC_POINT_set_affine_coordinates_GFp(
EC_KEY_get0_group(eck), ecp, bn_x, bn_y, NULL), 1);
ASSERT_INT_EQ(EC_KEY_set_public_key(eck, ecp), 1);
#endif
BN_free(bn_x);
BN_free(bn_y);
EC_POINT_free(ecp);
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
ASSERT_INT_EQ(OSSL_PARAM_BLD_push_octet_string(param_bld,
OSSL_PKEY_PARAM_PUB_KEY, pubkey, pubkey_len), 1);
params = OSSL_PARAM_BLD_to_param(param_bld);
ASSERT_PTR_NE(params, NULL);
OSSL_PARAM_BLD_free(param_bld);
ctx = EVP_PKEY_CTX_new_from_name(NULL, "EC", NULL);
ASSERT_PTR_NE(ctx, NULL);
ASSERT_INT_EQ(EVP_PKEY_fromdata_init(ctx), 1);
ASSERT_INT_EQ(EVP_PKEY_fromdata(ctx, &eck, EVP_PKEY_PUBLIC_KEY,
params), 1);
free(pubkey);
#endif
p1 = sshbuf_new();
ASSERT_PTR_NE(p1, NULL);
ASSERT_INT_EQ(sshbuf_put_eckey(p1, eck), 0);
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
ASSERT_INT_EQ(sshbuf_put_ecpkey(p1, eck), 0);
#else
ASSERT_INT_EQ(sshbuf_put_ec(p1, EC_KEY_get0_public_key(eck),
EC_KEY_get0_group(eck)), 0);
#endif
ASSERT_INT_EQ(sshbuf_get_string_direct(p1, &d, &s), 0);
ASSERT_SIZE_T_EQ(s, sizeof(expec256));
ASSERT_MEM_EQ(d, expec256, sizeof(expec256));
sshbuf_free(p1);
#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
EVP_PKEY_free(eck);
#else
EC_KEY_free(eck);
#endif
TEST_DONE();

#if (OPENSSL_VERSION_NUMBER < 0x30000000L)
TEST_START("sshbuf_get_ec");
eck = EC_KEY_new_by_curve_name(ec256_nid);
ASSERT_PTR_NE(eck, NULL);
Expand Down Expand Up @@ -275,6 +337,7 @@ sshbuf_getput_crypto_tests(void)
BN_free(bn2);
TEST_DONE();
#endif
#endif
}

#endif /* WITH_OPENSSL */
9 changes: 0 additions & 9 deletions regress/unittests/sshbuf/test_sshbuf_getput_fuzz.c
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Expand Up @@ -35,9 +35,6 @@ attempt_parse_blob(u_char *blob, size_t len)
struct sshbuf *p1;
#ifdef WITH_OPENSSL
BIGNUM *bn;
#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
EC_KEY *eck;
#endif /* defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256) */
#endif /* WITH_OPENSSL */
u_char *s;
size_t l;
Expand All @@ -61,12 +58,6 @@ attempt_parse_blob(u_char *blob, size_t len)
bn = NULL;
sshbuf_get_bignum2(p1, &bn);
BN_clear_free(bn);
#if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
eck = EC_KEY_new_by_curve_name(NID_X9_62_prime256v1);
ASSERT_PTR_NE(eck, NULL);
sshbuf_get_eckey(p1, eck);
EC_KEY_free(eck);
#endif /* defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256) */
#endif /* WITH_OPENSSL */
sshbuf_free(p1);
}
Expand Down
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