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authorKurt Roeckx <kurt@roeckx.be>2018-02-18 19:16:13 +0100
committerKurt Roeckx <kurt@roeckx.be>2018-02-21 20:40:34 +0100
commit32bda2b2e4900308cb025020d8c8692e1d3c2ba9 (patch)
tree4c7e82f15c70fe821006fa38d2be12f0aa05204a /include
parent649cfb5cbb78e3c4c91ceb65fad2a4daad6047dd (diff)
Switch the DRBGs from AES-128-CTR to AES-256-CTR
Reviewed-by: Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> GH: #5401
Diffstat (limited to 'include')
-rw-r--r--include/internal/rand.h18
1 files changed, 13 insertions, 5 deletions
diff --git a/include/internal/rand.h b/include/internal/rand.h
index d56742e533..471b6b55d2 100644
--- a/include/internal/rand.h
+++ b/include/internal/rand.h
@@ -15,14 +15,22 @@
/*
* Default security strength (in the sense of [NIST SP 800-90Ar1])
- * of the default OpenSSL DRBG, and the corresponding NID.
*
- * Currently supported values: 128, 192, 256
+ * NIST SP 800-90Ar1 supports the strength of the DRBG being smaller than that
+ * of the cipher by collecting less entropy. The current DRBG implemantion does
+ * not take RAND_DRBG_STRENGTH into account and sets the strength of the DRBG
+ * to that of the cipher.
*
- * TODO(DRBG): would be nice to have the strength configurable
+ * RAND_DRBG_STRENGTH is currently only used for the legacy RAND
+ * implementation.
+ *
+ * Currently supported ciphers are: NID_aes_128_ctr, NID_aes_192_ctr and
+ * NID_aes_256_ctr
+ *
+ * TODO(DRBG): would be nice to have the NID and strength configurable
*/
-# define RAND_DRBG_STRENGTH 128
-# define RAND_DRBG_NID NID_aes_128_ctr
+# define RAND_DRBG_STRENGTH 256
+# define RAND_DRBG_NID NID_aes_256_ctr
/*
* Object lifetime functions.