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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/maurice/example1.c')
-rw-r--r--openssl/demos/maurice/example1.c198
1 files changed, 198 insertions, 0 deletions
diff --git a/openssl/demos/maurice/example1.c b/openssl/demos/maurice/example1.c
new file mode 100644
index 000000000..1ef829990
--- /dev/null
+++ b/openssl/demos/maurice/example1.c
@@ -0,0 +1,198 @@
+/* NOCW */
+/*
+ Please read the README file for condition of use, before
+ using this software.
+
+ Maurice Gittens <mgittens@gits.nl> January 1997
+*/
+
+#include <unistd.h>
+#include <stdio.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <strings.h>
+#include <stdlib.h>
+
+#include <openssl/rsa.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/ssl.h>
+
+#include "loadkeys.h"
+
+#define PUBFILE "cert.pem"
+#define PRIVFILE "privkey.pem"
+
+#define STDIN 0
+#define STDOUT 1
+
+void main_encrypt(void);
+void main_decrypt(void);
+
+static const char *usage = "Usage: example1 [-d]\n";
+
+int main(int argc, char *argv[])
+{
+
+ ERR_load_crypto_strings();
+
+ if ((argc == 1))
+ {
+ main_encrypt();
+ }
+ else if ((argc == 2) && !strcmp(argv[1],"-d"))
+ {
+ main_decrypt();
+ }
+ else
+ {
+ printf("%s",usage);
+ exit(1);
+ }
+
+ return 0;
+}
+
+void main_encrypt(void)
+{
+ unsigned int ebuflen;
+ EVP_CIPHER_CTX ectx;
+ unsigned char iv[EVP_MAX_IV_LENGTH];
+ unsigned char *ekey[1];
+ int readlen;
+ int ekeylen, net_ekeylen;
+ EVP_PKEY *pubKey[1];
+ char buf[512];
+ char ebuf[512];
+
+ memset(iv, '\0', sizeof(iv));
+
+ pubKey[0] = ReadPublicKey(PUBFILE);
+
+ if(!pubKey[0])
+ {
+ fprintf(stderr,"Error: can't load public key");
+ exit(1);
+ }
+
+ ekey[0] = malloc(EVP_PKEY_size(pubKey[0]));
+ if (!ekey[0])
+ {
+ EVP_PKEY_free(pubKey[0]);
+ perror("malloc");
+ exit(1);
+ }
+
+ EVP_SealInit(&ectx,
+ EVP_des_ede3_cbc(),
+ ekey,
+ &ekeylen,
+ iv,
+ pubKey,
+ 1);
+
+ net_ekeylen = htonl(ekeylen);
+ write(STDOUT, (char*)&net_ekeylen, sizeof(net_ekeylen));
+ write(STDOUT, ekey[0], ekeylen);
+ write(STDOUT, iv, sizeof(iv));
+
+ while(1)
+ {
+ readlen = read(STDIN, buf, sizeof(buf));
+
+ if (readlen <= 0)
+ {
+ if (readlen < 0)
+ perror("read");
+
+ break;
+ }
+
+ EVP_SealUpdate(&ectx, ebuf, &ebuflen, buf, readlen);
+
+ write(STDOUT, ebuf, ebuflen);
+ }
+
+ EVP_SealFinal(&ectx, ebuf, &ebuflen);
+
+ write(STDOUT, ebuf, ebuflen);
+
+ EVP_PKEY_free(pubKey[0]);
+ free(ekey[0]);
+}
+
+void main_decrypt(void)
+{
+ char buf[520];
+ char ebuf[512];
+ unsigned int buflen;
+ EVP_CIPHER_CTX ectx;
+ unsigned char iv[EVP_MAX_IV_LENGTH];
+ unsigned char *encryptKey;
+ unsigned int ekeylen;
+ EVP_PKEY *privateKey;
+
+ memset(iv, '\0', sizeof(iv));
+
+ privateKey = ReadPrivateKey(PRIVFILE);
+ if (!privateKey)
+ {
+ fprintf(stderr, "Error: can't load private key");
+ exit(1);
+ }
+
+ read(STDIN, &ekeylen, sizeof(ekeylen));
+ ekeylen = ntohl(ekeylen);
+
+ if (ekeylen != EVP_PKEY_size(privateKey))
+ {
+ EVP_PKEY_free(privateKey);
+ fprintf(stderr, "keylength mismatch");
+ exit(1);
+ }
+
+ encryptKey = malloc(sizeof(char) * ekeylen);
+ if (!encryptKey)
+ {
+ EVP_PKEY_free(privateKey);
+ perror("malloc");
+ exit(1);
+ }
+
+ read(STDIN, encryptKey, ekeylen);
+ read(STDIN, iv, sizeof(iv));
+ EVP_OpenInit(&ectx,
+ EVP_des_ede3_cbc(),
+ encryptKey,
+ ekeylen,
+ iv,
+ privateKey);
+
+ while(1)
+ {
+ int readlen = read(STDIN, ebuf, sizeof(ebuf));
+
+ if (readlen <= 0)
+ {
+ if (readlen < 0)
+ perror("read");
+
+ break;
+ }
+
+ EVP_OpenUpdate(&ectx, buf, &buflen, ebuf, readlen);
+ write(STDOUT, buf, buflen);
+ }
+
+ EVP_OpenFinal(&ectx, buf, &buflen);
+
+ write(STDOUT, buf, buflen);
+
+ EVP_PKEY_free(privateKey);
+ free(encryptKey);
+}
+
+