File openssl-FIPS-140-3-DRBG.patch of Package openssl-3

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File openssl-FIPS-140-3-DRBG.patch of Package openssl-3 (Revision bf049b99ca3c0229877aa765034fbb70)

Currently displaying revision bf049b99ca3c0229877aa765034fbb70 , Show latest

Index: openssl-3.1.4/providers/implementations/rands/drbg.c
===================================================================
--- openssl-3.1.4.orig/providers/implementations/rands/drbg.c
+++ openssl-3.1.4/providers/implementations/rands/drbg.c
@@ -570,6 +570,9 @@ int ossl_prov_drbg_reseed(PROV_DRBG *drb
 #endif
     }
 
+#ifdef FIPS_MODULE
+    prediction_resistance = 1;
+#endif
     /* Reseed using our sources in addition */
     entropylen = get_entropy(drbg, &entropy, drbg->strength,
                              drbg->min_entropylen, drbg->max_entropylen,
@@ -662,8 +665,14 @@ int ossl_prov_drbg_generate(PROV_DRBG *d
             reseed_required = 1;
     }
     if (drbg->parent != NULL
-            && get_parent_reseed_count(drbg) != drbg->parent_reseed_counter)
+            && get_parent_reseed_count(drbg) != drbg->parent_reseed_counter) {
+#ifdef FIPS_MODULE
+        /* SUSE patches provide chain reseeding when necessary so just sync counters*/
+        drbg->parent_reseed_counter = get_parent_reseed_count(drbg);
+#else
         reseed_required = 1;
+#endif
+        }
 
     if (reseed_required || prediction_resistance) {
         if (!ossl_prov_drbg_reseed(drbg, prediction_resistance, NULL, 0,
Index: openssl-3.1.4/crypto/rand/prov_seed.c
===================================================================
--- openssl-3.1.4.orig/crypto/rand/prov_seed.c
+++ openssl-3.1.4/crypto/rand/prov_seed.c
@@ -23,7 +23,14 @@ size_t ossl_rand_get_entropy(ossl_unused
     size_t entropy_available;
     RAND_POOL *pool;
 
-    pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
+    /*
+     * OpenSSL still implements an internal entropy pool of
+     * some size that is hashed to get seed data.
+     * Note that this is a conditioning step for which SP800-90C requires
+     * 64 additional bits from the entropy source to claim the requested
+     * amount of entropy.
+     */
+    pool = ossl_rand_pool_new(entropy + 64, 1, min_len, max_len);
     if (pool == NULL) {
         ERR_raise(ERR_LIB_RAND, ERR_R_MALLOC_FAILURE);
         return 0;
Index: openssl-3.1.4/providers/implementations/rands/crngt.c
===================================================================
--- openssl-3.1.4.orig/providers/implementations/rands/crngt.c
+++ openssl-3.1.4/providers/implementations/rands/crngt.c
@@ -133,7 +133,11 @@ size_t ossl_crngt_get_entropy(PROV_DRBG
      * to the nearest byte.  If the entropy is of less than full quality,
      * the amount required should be scaled up appropriately here.
      */
-    bytes_needed = (entropy + 7) / 8;
+    /*
+     * FIPS 140-3: the yet draft SP800-90C requires requested entropy
+     * + 128 bits during initial seeding
+     */
+    bytes_needed = (entropy + 128 + 7) / 8;
     if (bytes_needed < min_len)
         bytes_needed = min_len;
     if (bytes_needed > max_len)
Index: openssl-3.1.4/providers/implementations/rands/drbg_local.h
===================================================================
--- openssl-3.1.4.orig/providers/implementations/rands/drbg_local.h
+++ openssl-3.1.4/providers/implementations/rands/drbg_local.h
@@ -38,7 +38,7 @@
  *
  * The value is in bytes.
  */
-#define CRNGT_BUFSIZ    16
+#define CRNGT_BUFSIZ   32
 
 /*
  * Maximum input size for the DRBG (entropy, nonce, personalization string)
Index: openssl-3.1.4/providers/implementations/rands/seed_src.c
===================================================================
--- openssl-3.1.4.orig/providers/implementations/rands/seed_src.c
+++ openssl-3.1.4/providers/implementations/rands/seed_src.c
@@ -104,7 +104,14 @@ static int seed_src_generate(void *vseed
         return 0;
     }
 
-    pool = ossl_rand_pool_new(strength, 1, outlen, outlen);
+    /*
+     * OpenSSL still implements an internal entropy pool of
+     * some size that is hashed to get seed data.
+     * Note that this is a conditioning step for which SP800-90C requires
+     * 64 additional bits from the entropy source to claim the requested
+     * amount of entropy.
+     */
+    pool = ossl_rand_pool_new(strength + 64, 1, outlen, outlen);
     if (pool == NULL) {
         ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
         return 0;
@@ -184,7 +191,14 @@ static size_t seed_get_seed(void *vseed,
     size_t i;
     RAND_POOL *pool;
 
-    pool = ossl_rand_pool_new(entropy, 1, min_len, max_len);
+    /*
+     * OpenSSL still implements an internal entropy pool of
+     * some size that is hashed to get seed data.
+     * Note that this is a conditioning step for which SP800-90C requires
+     * 64 additional bits from the entropy source to claim the requested
+     * amount of entropy.
+     */
+    pool = ossl_rand_pool_new(entropy + 64, 1, min_len, max_len);
     if (pool == NULL) {
         ERR_raise(ERR_LIB_PROV, ERR_R_RAND_LIB);
         return 0;

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File openssl-FIPS-140-3-DRBG.patch of Package openssl-3 (Revision bf049b99ca3c0229877aa765034fbb70)

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