openssl-3/openssl-FIPS-140-3-DRBG.patch

117 lines
4.7 KiB
Diff

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;