Latest update

2019-07-13 19:13:22 +09:00
parent 9a23f88dc2
commit 2e57f602ae
542 changed files with 17287 additions and 6184 deletions
@@ -98,8 +98,12 @@ int BN_generate_prime_ex(BIGNUM *ret, int bits, int safe,
        /* There are no prime numbers this small. */
        BNerr(BN_F_BN_GENERATE_PRIME_EX, BN_R_BITS_TOO_SMALL);
        return 0;
-    } else if (bits == 2 && safe) {
-        /* The smallest safe prime (7) is three bits. */
+    } else if (add == NULL && safe && bits < 6 && bits != 3) {
+        /*
+         * The smallest safe prime (7) is three bits.
+         * But the following two safe primes with less than 6 bits (11, 23)
+         * are unreachable for BN_rand with BN_RAND_TOP_TWO.
+         */
        BNerr(BN_F_BN_GENERATE_PRIME_EX, BN_R_BITS_TOO_SMALL);
        return 0;
    }