X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=userapps%2Fopensource%2Fopenssl%2Fdemos%2Fmaurice%2Fexample1.c;fp=userapps%2Fopensource%2Fopenssl%2Fdemos%2Fmaurice%2Fexample1.c;h=1ef829990065103d7573c6132747f845f50471cd;hb=59e02c1be2c9b373846b0789fbd5b7ef46f0927f;hp=0000000000000000000000000000000000000000;hpb=3f05a9da74f56df22d185b66ee663a6fd8053cb3;p=bcm963xx.git diff --git a/userapps/opensource/openssl/demos/maurice/example1.c b/userapps/opensource/openssl/demos/maurice/example1.c new file mode 100755 index 00000000..1ef82999 --- /dev/null +++ b/userapps/opensource/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 January 1997 +*/ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include + +#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); +} + +