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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
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Diffstat (limited to 'openssl/demos/sign/sig.txt')
-rw-r--r--openssl/demos/sign/sig.txt158
1 files changed, 158 insertions, 0 deletions
diff --git a/openssl/demos/sign/sig.txt b/openssl/demos/sign/sig.txt
new file mode 100644
index 000000000..5613c0ee7
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+++ b/openssl/demos/sign/sig.txt
@@ -0,0 +1,158 @@
+From ssl-lists-owner@mincom.com Mon Sep 30 02:37:40 1996
+Received: from cygnus.mincom.oz.au by orb.mincom.oz.au with SMTP id AA11782
+ (5.65c/IDA-1.4.4 for eay); Mon, 30 Sep 1996 11:46:21 +1000
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+Date: Mon, 30 Sep 1996 01:37:40 +0100
+Message-Id: <199609300037.BAA08729@brutus.neuronio.pt>
+From: Sampo Kellomaki <sampo@neuronio.pt>
+To: ssl-users@mincom.com
+Cc: sampo@brutus.neuronio.pt
+Subject: Signing with envelope routines
+Sender: ssl-lists-owner@mincom.com
+Precedence: bulk
+Status: RO
+X-Status: D
+
+
+I have been trying to figure out how to produce signatures with EVP_
+routines. I seem to be able to read in private key and sign some
+data ok, but I can't figure out how I am supposed to read in
+public key so that I could verify my signature. I use self signed
+certificate.
+
+I figured I should use
+ EVP_PKEY* pkey = PEM_ASN1_read(d2i_PrivateKey, PEM_STRING_EVP_PKEY,
+ fp, NULL, NULL);
+to read in private key and this seems to work Ok.
+
+However when I try analogous
+ EVP_PKEY* pkey = PEM_ASN1_read(d2i_PublicKey, PEM_STRING_X509,
+ fp, NULL, NULL);
+the program fails with
+
+error:0D09508D:asn1 encoding routines:D2I_PUBLICKEY:unknown public key type:d2i_pu.c:93
+error:0906700D:PEM routines:PEM_ASN1_read_bio:ASN1 lib:pem_lib.c:232
+
+I figured that the second argument to PEM_ASN1_read should match the
+name in my PEM encoded object, hence PEM_STRING_X509.
+PEM_STRING_EVP_PKEY seems to be somehow magical
+because it matches whatever private key there happens to be. I could
+not find a similar constant to use with getting the certificate, however.
+
+Is my approach of using PEM_ASN1_read correct? What should I pass in
+as name? Can I use normal (or even self signed) X509 certificate for
+verifying the signature?
+
+When will SSLeay documentation be written ;-)? If I would contribute
+comments to the code, would Eric take time to review them and include
+them in distribution?
+
+I'm using SSLeay-0.6.4. My program is included below along with the
+key and cert that I use.
+
+--Sampo
+
+-----------------------------------
+/* sign-it.cpp - Simple test app using SSLeay envelopes to sign data
+ 29.9.1996, Sampo Kellomaki <sampo@iki.fi> */
+
+#include <stdio.h>
+#include "rsa.h"
+#include "evp.h"
+#include "objects.h"
+#include "x509.h"
+#include "err.h"
+#include "pem.h"
+#include "ssl.h"
+
+void main ()
+{
+ int err;
+ int sig_len;
+ unsigned char sig_buf [4096];
+ const char certfile[] = "plain-cert.pem";
+ const char keyfile[] = "plain-key.pem";
+ const char data[] = "I owe you...";
+ EVP_MD_CTX md_ctx;
+ EVP_PKEY* pkey;
+ FILE* fp;
+
+ SSL_load_error_strings();
+
+ /* Read private key */
+
+ fp = fopen (keyfile, "r"); if (fp == NULL) exit (1);
+ pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PrivateKey,
+ PEM_STRING_EVP_PKEY,
+ fp,
+ NULL, NULL);
+ if (pkey == NULL) { ERR_print_errors_fp (stderr); exit (1); }
+ fclose (fp);
+
+ /* Do the signature */
+
+ EVP_SignInit (&md_ctx, EVP_md5());
+ EVP_SignUpdate (&md_ctx, data, strlen(data));
+ sig_len = sizeof(sig_buf);
+ err = EVP_SignFinal (&md_ctx,
+ sig_buf,
+ &sig_len,
+ pkey);
+ if (err != 1) { ERR_print_errors_fp (stderr); exit (1); }
+ EVP_PKEY_free (pkey);
+
+ /* Read public key */
+
+ fp = fopen (certfile, "r"); if (fp == NULL) exit (1);
+ pkey = (EVP_PKEY*)PEM_ASN1_read ((char *(*)())d2i_PublicKey,
+ PEM_STRING_X509,
+ fp,
+ NULL, NULL);
+ if (pkey == NULL) { ERR_print_errors_fp (stderr); exit (1); }
+ fclose (fp);
+
+ /* Verify the signature */
+
+ EVP_VerifyInit (&md_ctx, EVP_md5());
+ EVP_VerifyUpdate (&md_ctx, data, strlen((char*)data));
+ err = EVP_VerifyFinal (&md_ctx,
+ sig_buf,
+ sig_len,
+ pkey);
+ if (err != 1) { ERR_print_errors_fp (stderr); exit (1); }
+ EVP_PKEY_free (pkey);
+ printf ("Signature Verified Ok.\n");
+}
+/* EOF */
+--------------- plain-cert.pem -----------------
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+---------------- plain-key.pem -----------------
+-----BEGIN RSA PRIVATE KEY-----
+MIIBPAIBAAJBAL7+aty3S1iBA/+yxjxv4q1MUTd1kjNwL4lYKbpzzlmC5beaQXeQ
+2RmGMTXU+mDvuqItjVHOK3DvPK7lTcSGftUCAwEAAQJBALjkK+jc2+iihI98riEF
+oudmkNziSRTYjnwjx8mCoAjPWviB3c742eO3FG4/soi1jD9A5alihEOXfUzloenr
+8IECIQD3B5+0l+68BA/6d76iUNqAAV8djGTzvxnCxycnxPQydQIhAMXt4trUI3nc
+a+U8YL2HPFA3gmhBsSICbq2OptOCnM7hAiEA6Xi3JIQECob8YwkRj29DU3/4WYD7
+WLPgsQpwo1GuSpECICGsnWH5oaeD9t9jbFoSfhJvv0IZmxdcLpRcpslpeWBBAiEA
+6/5B8J0GHdJq89FHwEG/H2eVVUYu5y/aD6sgcm+0Avg=
+-----END RSA PRIVATE KEY-----
+------------------------------------------------
+