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25 lines
767 B
25 lines
767 B
5 years ago
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diff -up openssl-1.0.2k/crypto/dh/dh_key.c.large-dh openssl-1.0.2k/crypto/dh/dh_key.c
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--- openssl-1.0.2k/crypto/dh/dh_key.c.large-dh 2018-06-18 13:46:24.268137362 +0200
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+++ openssl-1.0.2k/crypto/dh/dh_key.c 2018-06-18 13:59:04.605497462 +0200
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@@ -133,7 +133,7 @@ static int generate_key(DH *dh)
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int ok = 0;
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int generate_new_key = 0;
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unsigned l;
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- BN_CTX *ctx;
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+ BN_CTX *ctx = NULL;
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BN_MONT_CTX *mont = NULL;
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BIGNUM *pub_key = NULL, *priv_key = NULL;
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@@ -145,6 +145,11 @@ static int generate_key(DH *dh)
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}
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#endif
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+ if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
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+ DHerr(DH_F_GENERATE_KEY, DH_R_MODULUS_TOO_LARGE);
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+ return 0;
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+ }
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+
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ctx = BN_CTX_new();
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if (ctx == NULL)
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goto err;
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