+OPTIONS rsa_options[] = {
+ {"help", OPT_HELP, '-', "Display this summary"},
+ {"inform", OPT_INFORM, 'f', "Input format, one of DER NET PEM"},
+ {"outform", OPT_OUTFORM, 'f', "Output format, one of DER NET PEM PVK"},
+ {"in", OPT_IN, '<', "Input file"},
+ {"out", OPT_OUT, '>', "Output file"},
+ {"pubin", OPT_PUBIN, '-', "Expect a public key in input file"},
+ {"pubout", OPT_PUBOUT, '-', "Output a public key"},
+ {"passout", OPT_PASSOUT, 's', "Output file pass phrase source"},
+ {"passin", OPT_PASSIN, 's', "Input file pass phrase source"},
+ {"RSAPublicKey_in", OPT_RSAPUBKEY_IN, '-', "Input is an RSAPublicKye"},
+ {"RSAPublicKey_out", OPT_RSAPUBKEY_OUT, '-', "Output is an RSAPublicKye"},
+ {"pvk-strong", OPT_PVK_STRONG, '-'},
+ {"pvk-weak", OPT_PVK_WEAK, '-'},
+ {"pvk-none", OPT_PVK_NONE, '-'},
+ {"noout", OPT_NOOUT, '-', "Don't print key out"},
+ {"text", OPT_TEXT, '-', "Print the key in text"},
+ {"modulus", OPT_MODULUS, '-', "Print the RSA key modulus"},
+ {"check", OPT_CHECK, '-', "Verify key consistency"},
+ {"", OPT_CIPHER, '-', "Any supported cipher"},
+# ifndef OPENSSL_NO_ENGINE
+ {"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
+# endif
+ {NULL}
+};
+
+int rsa_main(int argc, char **argv)
+{
+ ENGINE *e = NULL;
+ BIO *out = NULL;
+ RSA *rsa = NULL;
+ const EVP_CIPHER *enc = NULL;
+ char *infile = NULL, *outfile = NULL, *prog;
+ char *passin = NULL, *passout = NULL, *passinarg = NULL, *passoutarg = NULL;
+ int i;
+ int informat = FORMAT_PEM, outformat = FORMAT_PEM, text = 0, check = 0;
+ int noout = 0, modulus = 0, pubin = 0, pubout = 0, pvk_encr = 2, ret = 1;
+ OPTION_CHOICE o;
+
+ prog = opt_init(argc, argv, rsa_options);
+ while ((o = opt_next()) != OPT_EOF) {
+ switch (o) {
+ case OPT_EOF:
+ case OPT_ERR:
+#ifdef OPENSSL_NO_RC4
+ case OPT_PVK_STRONG:
+ case OPT_PVK_WEAK:
+ case OPT_PVK_NONE:
+#endif
+ opthelp:
+ BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+ goto end;
+ case OPT_HELP:
+ opt_help(rsa_options);
+ ret = 0;
+ goto end;
+ case OPT_INFORM:
+ if (!opt_format(opt_arg(), OPT_FMT_ANY, &informat))
+ goto opthelp;
+ break;
+ case OPT_IN:
+ infile = opt_arg();
+ break;
+ case OPT_OUTFORM:
+ if (!opt_format(opt_arg(), OPT_FMT_ANY, &outformat))
+ goto opthelp;
+ break;
+ case OPT_OUT:
+ outfile = opt_arg();
+ break;
+ case OPT_PASSIN:
+ passinarg = opt_arg();
+ break;
+ case OPT_PASSOUT:
+ passoutarg = opt_arg();
+ break;
+ case OPT_ENGINE:
+ e = setup_engine(opt_arg(), 0);
+ break;
+ case OPT_PUBIN:
+ pubin = 1;
+ break;
+ case OPT_PUBOUT:
+ pubout = 1;
+ break;
+ case OPT_RSAPUBKEY_IN:
+ pubin = 2;
+ break;
+ case OPT_RSAPUBKEY_OUT:
+ pubout = 2;
+ break;
+#ifndef OPENSSL_NO_RC4
+ case OPT_PVK_STRONG:
+ pvk_encr = 2;
+ break;
+ case OPT_PVK_WEAK:
+ pvk_encr = 1;
+ break;
+ case OPT_PVK_NONE:
+ pvk_encr = 0;
+ break;
+#endif
+ case OPT_NOOUT:
+ noout = 1;
+ break;
+ case OPT_TEXT:
+ text = 1;
+ break;
+ case OPT_MODULUS:
+ modulus = 1;
+ break;
+ case OPT_CHECK:
+ check = 1;
+ break;
+ case OPT_CIPHER:
+ if (!opt_cipher(opt_unknown(), &enc))
+ goto opthelp;
+ break;
+ }
+ }
+ argc = opt_num_rest();
+ argv = opt_rest();