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diff -up openssl-1.0.1e/crypto/rsa/rsa_gen.c.cc-reqs openssl-1.0.1e/crypto/rsa/rsa_gen.c
--- openssl-1.0.1e/crypto/rsa/rsa_gen.c.cc-reqs 2015-01-13 12:45:51.000000000 +0100
+++ openssl-1.0.1e/crypto/rsa/rsa_gen.c 2015-01-15 17:35:04.649697922 +0100
@@ -438,6 +438,10 @@ static int rsa_builtin_keygen(RSA *rsa,
if(!rsa->dmq1 && ((rsa->dmq1=BN_new()) == NULL)) goto err;
if(!rsa->iqmp && ((rsa->iqmp=BN_new()) == NULL)) goto err;
+ /* prepare minimum p and q difference */
+ if (!BN_one(r3)) goto err;
+ if (bitsp > 100 && !BN_lshift(r3, r3, bitsp - 100)) goto err;
+
BN_copy(rsa->e, e_value);
/* generate p and q */
@@ -463,7 +467,9 @@ static int rsa_builtin_keygen(RSA *rsa,
{
if(!BN_generate_prime_ex(rsa->q, bitsq, 0, NULL, NULL, cb))
goto err;
- } while((BN_cmp(rsa->p, rsa->q) == 0) && (++degenerate < 3));
+ if (!BN_sub(r2, rsa->q, rsa->p))
+ goto err;
+ } while((BN_ucmp(r2, r3) <= 0) && (++degenerate < 3));
if(degenerate == 3)
{
ok = 0; /* we set our own err */