Blame SOURCES/openssl-1.0.2k-cc-reqs.patch
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diff -up openssl-1.0.2k/crypto/rsa/rsa_gen.c.cc-reqs openssl-1.0.2k/crypto/rsa/rsa_gen.c
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--- openssl-1.0.2k/crypto/rsa/rsa_gen.c.cc-reqs 2017-02-06 16:42:47.313963001 +0100
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+++ openssl-1.0.2k/crypto/rsa/rsa_gen.c 2017-02-06 16:46:54.453628783 +0100
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@@ -474,6 +474,12 @@ 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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@@ -502,7 +508,9 @@ 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) && (++degenerate < 3));
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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) && (++degenerate < 3));
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if (degenerate == 3) {
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ok = 0; /* we set our own err */
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RSAerr(RSA_F_RSA_BUILTIN_KEYGEN, RSA_R_KEY_SIZE_TOO_SMALL);
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