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28 lines
1.0 KiB
28 lines
1.0 KiB
3 years ago
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diff -up openssl-1.0.2o/crypto/rsa/rsa_gen.c.cc-reqs openssl-1.0.2o/crypto/rsa/rsa_gen.c
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--- openssl-1.0.2o/crypto/rsa/rsa_gen.c.cc-reqs 2018-04-05 17:48:48.180527469 +0200
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+++ openssl-1.0.2o/crypto/rsa/rsa_gen.c 2018-04-05 17:57:41.740893045 +0200
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@@ -506,6 +506,12 @@ static int rsa_builtin_keygen(RSA *rsa,
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if (!rsa->iqmp && ((rsa->iqmp = BN_new()) == NULL))
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goto err;
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+ /* prepare minimum p and q difference */
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+ if (!BN_one(r3))
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+ goto err;
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+ if (bitsp > 100 && !BN_lshift(r3, r3, bitsp - 100))
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+ goto err;
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+
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if (BN_copy(rsa->e, e_value) == NULL)
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goto err;
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@@ -538,7 +544,9 @@ static int rsa_builtin_keygen(RSA *rsa,
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do {
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if (!BN_generate_prime_ex(rsa->q, bitsq, 0, NULL, NULL, cb))
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goto err;
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- } while (BN_cmp(rsa->p, rsa->q) == 0);
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+ if (!BN_sub(r2, rsa->q, rsa->p))
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+ goto err;
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+ } while (BN_ucmp(r2, r3) <= 0);
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if (!BN_sub(r2, rsa->q, BN_value_one()))
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goto err;
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ERR_set_mark();
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