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diff -up openssl-1.0.2a/apps/genrsa.c.x931 openssl-1.0.2a/apps/genrsa.c
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--- openssl-1.0.2a/apps/genrsa.c.x931 2015-04-09 18:18:24.132107287 +0200
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+++ openssl-1.0.2a/apps/genrsa.c 2015-04-09 18:18:18.852985339 +0200
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@@ -97,6 +97,7 @@ int MAIN(int argc, char **argv)
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int ret = 1;
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int i, num = DEFBITS;
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long l;
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+ int use_x931 = 0;
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const EVP_CIPHER *enc = NULL;
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unsigned long f4 = RSA_F4;
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char *outfile = NULL;
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@@ -139,6 +140,8 @@ int MAIN(int argc, char **argv)
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f4 = 3;
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else if (strcmp(*argv, "-F4") == 0 || strcmp(*argv, "-f4") == 0)
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f4 = RSA_F4;
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+ else if (strcmp(*argv, "-x931") == 0)
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+ use_x931 = 1;
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# ifndef OPENSSL_NO_ENGINE
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else if (strcmp(*argv, "-engine") == 0) {
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if (--argc < 1)
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@@ -278,7 +281,13 @@ int MAIN(int argc, char **argv)
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if (!rsa)
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goto err;
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- if (!BN_set_word(bn, f4) || !RSA_generate_key_ex(rsa, num, bn, &cb))
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+ if (use_x931) {
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+ if (!BN_set_word(bn, f4))
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+ goto err;
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+ if (!RSA_X931_generate_key_ex(rsa, num, bn, &cb))
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+ goto err;
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+ } else if (!BN_set_word(bn, f4)
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+ || !RSA_generate_key_ex(rsa, num, bn, &cb))
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goto err;
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app_RAND_write_file(NULL, bio_err);
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