openssl/0073-FIPS-Use-OAEP-in-KATs-support-fixed-OAEP-seed.patch

From abeda0b0475adb0d4f89b0c97cfc349779915bbf Mon Sep 17 00:00:00 2001
From: rpm-build <rpm-build>
Date: Mon, 31 Jul 2023 09:41:28 +0200
Subject: [PATCH 29/35] 
 0073-FIPS-Use-OAEP-in-KATs-support-fixed-OAEP-seed.patch

Patch-name: 0073-FIPS-Use-OAEP-in-KATs-support-fixed-OAEP-seed.patch
Patch-id: 73
Patch-status: |
    # https://bugzilla.redhat.com/show_bug.cgi?id=2102535
From-dist-git-commit: 9409bc7044cf4b5773639cce20f51399888c45fd
---
 crypto/rsa/rsa_local.h                        |  8 ++
 crypto/rsa/rsa_oaep.c                         | 34 ++++++--
 include/openssl/core_names.h                  |  3 +
 providers/fips/self_test_data.inc             | 79 ++++++++++---------
 providers/fips/self_test_kats.c               |  7 ++
 .../implementations/asymciphers/rsa_enc.c     | 41 +++++++++-
 6 files changed, 128 insertions(+), 44 deletions(-)

diff --git a/crypto/rsa/rsa_local.h b/crypto/rsa/rsa_local.h
index ea70da05ad..dde57a1a0e 100644
--- a/crypto/rsa/rsa_local.h
+++ b/crypto/rsa/rsa_local.h
@@ -193,4 +193,12 @@ int ossl_rsa_padding_add_PKCS1_type_2_ex(OSSL_LIB_CTX *libctx, unsigned char *to
                                          int tlen, const unsigned char *from,
                                          int flen);
 
+int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex2(OSSL_LIB_CTX *libctx,
+                                             unsigned char *to, int tlen,
+                                             const unsigned char *from, int flen,
+                                             const unsigned char *param,
+                                             int plen, const EVP_MD *md,
+                                             const EVP_MD *mgf1md,
+                                             const char *redhat_st_seed);
+
 #endif /* OSSL_CRYPTO_RSA_LOCAL_H */
diff --git a/crypto/rsa/rsa_oaep.c b/crypto/rsa/rsa_oaep.c
index d9be1a4f98..b2f7f7dc4b 100644
--- a/crypto/rsa/rsa_oaep.c
+++ b/crypto/rsa/rsa_oaep.c
@@ -44,6 +44,10 @@ int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
                                                    param, plen, NULL, NULL);
 }
 
+#ifdef FIPS_MODULE
+extern int REDHAT_FIPS_asym_cipher_st;
+#endif /* FIPS_MODULE */
+
 /*
  * Perform the padding as per NIST 800-56B 7.2.2.3
  *      from (K) is the key material.
@@ -51,12 +55,13 @@ int RSA_padding_add_PKCS1_OAEP(unsigned char *to, int tlen,
  * Step numbers are included here but not in the constant time inverse below
  * to avoid complicating an already difficult enough function.
  */
-int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(OSSL_LIB_CTX *libctx,
-                                            unsigned char *to, int tlen,
-                                            const unsigned char *from, int flen,
-                                            const unsigned char *param,
-                                            int plen, const EVP_MD *md,
-                                            const EVP_MD *mgf1md)
+int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex2(OSSL_LIB_CTX *libctx,
+                                             unsigned char *to, int tlen,
+                                             const unsigned char *from, int flen,
+                                             const unsigned char *param,
+                                             int plen, const EVP_MD *md,
+                                             const EVP_MD *mgf1md,
+                                             const char *redhat_st_seed)
 {
     int rv = 0;
     int i, emlen = tlen - 1;
@@ -107,6 +112,11 @@ int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(OSSL_LIB_CTX *libctx,
     db[emlen - flen - mdlen - 1] = 0x01;
     memcpy(db + emlen - flen - mdlen, from, (unsigned int)flen);
     /* step 3d: generate random byte string */
+#ifdef FIPS_MODULE
+    if (redhat_st_seed != NULL && REDHAT_FIPS_asym_cipher_st) {
+        memcpy(seed, redhat_st_seed, mdlen);
+    } else
+#endif
     if (RAND_bytes_ex(libctx, seed, mdlen, 0) <= 0)
         goto err;
 
@@ -138,6 +148,18 @@ int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(OSSL_LIB_CTX *libctx,
     return rv;
 }
 
+int ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(OSSL_LIB_CTX *libctx,
+                                            unsigned char *to, int tlen,
+                                            const unsigned char *from, int flen,
+                                            const unsigned char *param,
+                                            int plen, const EVP_MD *md,
+                                            const EVP_MD *mgf1md)
+{
+    return ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex2(libctx, to, tlen, from,
+                                                    flen, param, plen, md,
+                                                    mgf1md, NULL);
+}
+
 int RSA_padding_add_PKCS1_OAEP_mgf1(unsigned char *to, int tlen,
                                     const unsigned char *from, int flen,
                                     const unsigned char *param, int plen,
diff --git a/include/openssl/core_names.h b/include/openssl/core_names.h
index 5e3c132f5b..c0cce14297 100644
--- a/include/openssl/core_names.h
+++ b/include/openssl/core_names.h
@@ -471,6 +471,9 @@ extern "C" {
 #define OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL               "oaep-label"
 #define OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION       "tls-client-version"
 #define OSSL_ASYM_CIPHER_PARAM_TLS_NEGOTIATED_VERSION   "tls-negotiated-version"
+#ifdef FIPS_MODULE
+#define OSSL_ASYM_CIPHER_PARAM_REDHAT_KAT_OEAP_SEED     "redhat-kat-oaep-seed"
+#endif
 
 /*
  * Encoder / decoder parameters
diff --git a/providers/fips/self_test_data.inc b/providers/fips/self_test_data.inc
index e0fdc0daa4..aa2012c04a 100644
--- a/providers/fips/self_test_data.inc
+++ b/providers/fips/self_test_data.inc
@@ -1296,14 +1296,21 @@ static const ST_KAT_PARAM rsa_priv_key[] = {
 };
 
 /*-
- * Using OSSL_PKEY_RSA_PAD_MODE_NONE directly in the expansion of the
+ * Using OSSL_PKEY_RSA_PAD_MODE_OAEP directly in the expansion of the
  * ST_KAT_PARAM_UTF8STRING macro below causes a failure on ancient
  * HP/UX PA-RISC compilers.
  */
-static const char pad_mode_none[] = OSSL_PKEY_RSA_PAD_MODE_NONE;
+static const char pad_mode_oaep[] = OSSL_PKEY_RSA_PAD_MODE_OAEP;
+static const char oaep_fixed_seed[] = {
+    0xf6, 0x10, 0xef, 0x0a, 0x97, 0xbf, 0x91, 0x25,
+    0x97, 0xcf, 0x8e, 0x0a, 0x75, 0x51, 0x2f, 0xab,
+    0x2e, 0x4b, 0x2c, 0xe6
+};
 
 static const ST_KAT_PARAM rsa_enc_params[] = {
-    ST_KAT_PARAM_UTF8STRING(OSSL_ASYM_CIPHER_PARAM_PAD_MODE, pad_mode_none),
+    ST_KAT_PARAM_UTF8STRING(OSSL_ASYM_CIPHER_PARAM_PAD_MODE, pad_mode_oaep),
+    ST_KAT_PARAM_OCTET(OSSL_ASYM_CIPHER_PARAM_REDHAT_KAT_OEAP_SEED,
+                       oaep_fixed_seed),
     ST_KAT_PARAM_END()
 };
 
@@ -1342,43 +1349,43 @@ static const unsigned char rsa_expected_sig[256] = {
     0x2c, 0x68, 0xf0, 0x37, 0xa9, 0xd2, 0x56, 0xd6
 };
 
-static const unsigned char rsa_asym_plaintext_encrypt[256] = {
+static const unsigned char rsa_asym_plaintext_encrypt[208] = {
    0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
    0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
 };
 static const unsigned char rsa_asym_expected_encrypt[256] = {
-    0x54, 0xac, 0x23, 0x96, 0x1d, 0x82, 0x5d, 0x8b,
-    0x8f, 0x36, 0x33, 0xd0, 0xf4, 0x02, 0xa2, 0x61,
-    0xb1, 0x13, 0xd4, 0x4a, 0x46, 0x06, 0x37, 0x3c,
-    0xbf, 0x40, 0x05, 0x3c, 0xc6, 0x3b, 0x64, 0xdc,
-    0x22, 0x22, 0xaf, 0x36, 0x79, 0x62, 0x45, 0xf0,
-    0x97, 0x82, 0x22, 0x44, 0x86, 0x4a, 0x7c, 0xfa,
-    0xac, 0x03, 0x21, 0x84, 0x3f, 0x31, 0xad, 0x2a,
-    0xa4, 0x6e, 0x7a, 0xc5, 0x93, 0xf3, 0x0f, 0xfc,
-    0xf1, 0x62, 0xce, 0x82, 0x12, 0x45, 0xc9, 0x35,
-    0xb0, 0x7a, 0xcd, 0x99, 0x8c, 0x91, 0x6b, 0x5a,
-    0xd3, 0x46, 0xdb, 0xf9, 0x9e, 0x52, 0x49, 0xbd,
-    0x1e, 0xe8, 0xda, 0xac, 0x61, 0x47, 0xc2, 0xda,
-    0xfc, 0x1e, 0xfb, 0x74, 0xd7, 0xd6, 0xc1, 0x18,
-    0x86, 0x3e, 0x20, 0x9c, 0x7a, 0xe1, 0x04, 0xb7,
-    0x38, 0x43, 0xb1, 0x4e, 0xa0, 0xd8, 0xc1, 0x39,
-    0x4d, 0xe1, 0xd3, 0xb0, 0xb3, 0xf1, 0x82, 0x87,
-    0x1f, 0x74, 0xb5, 0x69, 0xfd, 0x33, 0xd6, 0x21,
-    0x7c, 0x61, 0x60, 0x28, 0xca, 0x70, 0xdb, 0xa0,
-    0xbb, 0xc8, 0x73, 0xa9, 0x82, 0xf8, 0x6b, 0xd8,
-    0xf0, 0xc9, 0x7b, 0x20, 0xdf, 0x9d, 0xfb, 0x8c,
-    0xd4, 0xa2, 0x89, 0xe1, 0x9b, 0x04, 0xad, 0xaa,
-    0x11, 0x6c, 0x8f, 0xce, 0x83, 0x29, 0x56, 0x69,
-    0xbb, 0x00, 0x3b, 0xef, 0xca, 0x2d, 0xcd, 0x52,
-    0xc8, 0xf1, 0xb3, 0x9b, 0xb4, 0x4f, 0x6d, 0x9c,
-    0x3d, 0x69, 0xcc, 0x6d, 0x1f, 0x38, 0x4d, 0xe6,
-    0xbb, 0x0c, 0x87, 0xdc, 0x5f, 0xa9, 0x24, 0x93,
-    0x03, 0x46, 0xa2, 0x33, 0x6c, 0xf4, 0xd8, 0x5d,
-    0x68, 0xf3, 0xd3, 0xe0, 0xf2, 0x30, 0xdb, 0xf5,
-    0x4f, 0x0f, 0xad, 0xc7, 0xd0, 0xaa, 0x47, 0xd9,
-    0x9f, 0x85, 0x1b, 0x2e, 0x6c, 0x3c, 0x57, 0x04,
-    0x29, 0xf4, 0xf5, 0x66, 0x7d, 0x93, 0x4a, 0xaa,
-    0x05, 0x52, 0x55, 0xc1, 0xc6, 0x06, 0x90, 0xab,
+    0x6c, 0x21, 0xc1, 0x9e, 0x94, 0xee, 0xdf, 0x74,
+    0x3a, 0x3c, 0x7c, 0x04, 0x1a, 0x53, 0x9e, 0x7c,
+    0x42, 0xac, 0x7e, 0x28, 0x9a, 0xb7, 0xe2, 0x4e,
+    0x87, 0xd4, 0x00, 0x69, 0x71, 0xf0, 0x3e, 0x0b,
+    0xc1, 0xda, 0xd6, 0xbd, 0x21, 0x39, 0x4f, 0x25,
+    0x22, 0x1f, 0x76, 0x0d, 0x62, 0x1f, 0xa2, 0x89,
+    0xdb, 0x38, 0x32, 0x88, 0x21, 0x1d, 0x89, 0xf1,
+    0xe0, 0x14, 0xd4, 0xb7, 0x90, 0xfc, 0xbc, 0x50,
+    0xb0, 0x8d, 0x5c, 0x2f, 0x49, 0x9e, 0x90, 0x17,
+    0x9e, 0x60, 0x9f, 0xe1, 0x77, 0x4f, 0x11, 0xa2,
+    0xcf, 0x16, 0x65, 0x2d, 0x4a, 0x2c, 0x12, 0xcb,
+    0x1e, 0x3c, 0x29, 0x8b, 0xdc, 0x27, 0x06, 0x9d,
+    0xf4, 0x0d, 0xe1, 0xc9, 0xeb, 0x14, 0x6a, 0x7e,
+    0xfd, 0xa7, 0xa8, 0xa7, 0x51, 0x82, 0x62, 0x0f,
+    0x29, 0x8d, 0x8c, 0x5e, 0xf2, 0xb8, 0xcd, 0xd3,
+    0x51, 0x92, 0xa7, 0x25, 0x39, 0x9d, 0xdd, 0x06,
+    0xff, 0xb1, 0xb0, 0xd5, 0x61, 0x03, 0x8f, 0x25,
+    0x5c, 0x49, 0x12, 0xc1, 0x50, 0x67, 0x61, 0x78,
+    0xb3, 0xe3, 0xc4, 0xf6, 0x36, 0x16, 0xa9, 0x04,
+    0x91, 0x0a, 0x4b, 0x27, 0x28, 0x97, 0x50, 0x7c,
+    0x65, 0x2d, 0xd0, 0x08, 0x71, 0x84, 0xe7, 0x47,
+    0x79, 0x83, 0x91, 0x46, 0xd9, 0x8f, 0x79, 0xce,
+    0x49, 0xcb, 0xcd, 0x8b, 0x34, 0xac, 0x61, 0xe0,
+    0xe6, 0x55, 0xbf, 0x10, 0xe4, 0xac, 0x9a, 0xd6,
+    0xed, 0xc1, 0xc2, 0xb6, 0xb6, 0xf7, 0x41, 0x99,
+    0xde, 0xfa, 0xde, 0x11, 0x16, 0xa2, 0x18, 0x30,
+    0x30, 0xdc, 0x95, 0x76, 0x2f, 0x46, 0x43, 0x20,
+    0xc4, 0xe7, 0x50, 0xb9, 0x1e, 0xcd, 0x69, 0xbb,
+    0x29, 0x94, 0x27, 0x9c, 0xc9, 0xab, 0xb4, 0x27,
+    0x8b, 0x4d, 0xe1, 0xcb, 0xc1, 0x04, 0x2c, 0x66,
+    0x41, 0x3a, 0x4d, 0xeb, 0x61, 0x4c, 0x77, 0x5a,
+    0xee, 0xb0, 0xca, 0x99, 0x0e, 0x7f, 0xbe, 0x06
 };
 
 #ifndef OPENSSL_NO_EC
diff --git a/providers/fips/self_test_kats.c b/providers/fips/self_test_kats.c
index 74ee25dcb6..a9bc8be7fa 100644
--- a/providers/fips/self_test_kats.c
+++ b/providers/fips/self_test_kats.c
@@ -641,14 +641,21 @@ static int self_test_ciphers(OSSL_SELF_TEST *st, OSSL_LIB_CTX *libctx)
     return ret;
 }
 
+int REDHAT_FIPS_asym_cipher_st = 0;
+
 static int self_test_asym_ciphers(OSSL_SELF_TEST *st, OSSL_LIB_CTX *libctx)
 {
     int i, ret = 1;
 
+    REDHAT_FIPS_asym_cipher_st = 1;
+
     for (i = 0; i < (int)OSSL_NELEM(st_kat_asym_cipher_tests); ++i) {
         if (!self_test_asym_cipher(&st_kat_asym_cipher_tests[i], st, libctx))
             ret = 0;
     }
+
+    REDHAT_FIPS_asym_cipher_st = 0;
+
     return ret;
 }
 
diff --git a/providers/implementations/asymciphers/rsa_enc.c b/providers/implementations/asymciphers/rsa_enc.c
index 9cd8904131..40de5ce8fa 100644
--- a/providers/implementations/asymciphers/rsa_enc.c
+++ b/providers/implementations/asymciphers/rsa_enc.c
@@ -30,6 +30,9 @@
 #include "prov/implementations.h"
 #include "prov/providercommon.h"
 #include "prov/securitycheck.h"
+#ifdef FIPS_MODULE
+# include "crypto/rsa/rsa_local.h"
+#endif
 
 #include <stdlib.h>
 
@@ -75,6 +78,9 @@ typedef struct {
     /* TLS padding */
     unsigned int client_version;
     unsigned int alt_version;
+#ifdef FIPS_MODULE
+    char *redhat_st_oaep_seed;
+#endif /* FIPS_MODULE */
 } PROV_RSA_CTX;
 
 static void *rsa_newctx(void *provctx)
@@ -192,12 +198,21 @@ static int rsa_encrypt(void *vprsactx, unsigned char *out, size_t *outlen,
             }
         }
         ret =
-            ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(prsactx->libctx, tbuf,
+#ifdef FIPS_MODULE
+            ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex2(
+#else
+            ossl_rsa_padding_add_PKCS1_OAEP_mgf1_ex(
+#endif
+                                                    prsactx->libctx, tbuf,
                                                     rsasize, in, inlen,
                                                     prsactx->oaep_label,
                                                     prsactx->oaep_labellen,
                                                     prsactx->oaep_md,
-                                                    prsactx->mgf1_md);
+                                                    prsactx->mgf1_md
+#ifdef FIPS_MODULE
+                                                    , prsactx->redhat_st_oaep_seed
+#endif
+                                                    );
 
         if (!ret) {
             OPENSSL_free(tbuf);
@@ -328,6 +343,9 @@ static void rsa_freectx(void *vprsactx)
     EVP_MD_free(prsactx->oaep_md);
     EVP_MD_free(prsactx->mgf1_md);
     OPENSSL_free(prsactx->oaep_label);
+#ifdef FIPS_MODULE
+    OPENSSL_free(prsactx->redhat_st_oaep_seed);
+#endif /* FIPS_MODULE */
 
     OPENSSL_free(prsactx);
 }
@@ -447,6 +465,9 @@ static const OSSL_PARAM known_gettable_ctx_params[] = {
                     NULL, 0),
     OSSL_PARAM_uint(OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION, NULL),
     OSSL_PARAM_uint(OSSL_ASYM_CIPHER_PARAM_TLS_NEGOTIATED_VERSION, NULL),
+#ifdef FIPS_MODULE
+    OSSL_PARAM_octet_string(OSSL_ASYM_CIPHER_PARAM_REDHAT_KAT_OEAP_SEED, NULL, 0),
+#endif /* FIPS_MODULE */
     OSSL_PARAM_END
 };
 
@@ -456,6 +477,10 @@ static const OSSL_PARAM *rsa_gettable_ctx_params(ossl_unused void *vprsactx,
     return known_gettable_ctx_params;
 }
 
+#ifdef FIPS_MODULE
+extern int REDHAT_FIPS_asym_cipher_st;
+#endif /* FIPS_MODULE */
+
 static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
 {
     PROV_RSA_CTX *prsactx = (PROV_RSA_CTX *)vprsactx;
@@ -567,6 +592,18 @@ static int rsa_set_ctx_params(void *vprsactx, const OSSL_PARAM params[])
         prsactx->oaep_labellen = tmp_labellen;
     }
 
+#ifdef FIPS_MODULE
+    p = OSSL_PARAM_locate_const(params, OSSL_ASYM_CIPHER_PARAM_REDHAT_KAT_OEAP_SEED);
+    if (p != NULL && REDHAT_FIPS_asym_cipher_st) {
+        void *tmp_oaep_seed = NULL;
+
+        if (!OSSL_PARAM_get_octet_string(p, &tmp_oaep_seed, 0, NULL))
+            return 0;
+        OPENSSL_free(prsactx->redhat_st_oaep_seed);
+        prsactx->redhat_st_oaep_seed = (char *)tmp_oaep_seed;
+    }
+#endif /* FIPS_MODULE */
+
     p = OSSL_PARAM_locate_const(params, OSSL_ASYM_CIPHER_PARAM_TLS_CLIENT_VERSION);
     if (p != NULL) {
         unsigned int client_version;
-- 
2.41.0