- goto end;
- }
- argc--;
- argv++;
- }
-
- if (bufsize != NULL)
- {
- unsigned long n;
-
- for (n=0; *bufsize; bufsize++)
- {
- i= *bufsize;
- if ((i <= '9') && (i >= '0'))
- n=n*10+i-'0';
- else if (i == 'k')
- {
- n*=1024;
- bufsize++;
- break;
- }
- }
- if (*bufsize != '\0')
- {
- BIO_printf(bio_err,"invalid 'bufsize' specified.\n");
- goto end;
- }
-
- /* It must be large enough for a base64 encoded line */
- if (n < 80) n=80;
-
- bsize=(int)n;
- if (verbose) BIO_printf(bio_err,"bufsize=%d\n",bsize);
- }
-
- strbuf=Malloc(SIZE);
- buff=(unsigned char *)Malloc(EVP_ENCODE_LENGTH(bsize));
- if ((buff == NULL) || (strbuf == NULL))
- {
- BIO_printf(bio_err,"Malloc failure %ld\n",(long)EVP_ENCODE_LENGTH(bsize));
- goto end;
- }
-
- in=BIO_new(BIO_s_file());
- out=BIO_new(BIO_s_file());
- if ((in == NULL) || (out == NULL))
- {
- ERR_print_errors(bio_err);
- goto end;
- }
- if (debug)
- {
- BIO_set_callback(in,BIO_debug_callback);
- BIO_set_callback(out,BIO_debug_callback);
- BIO_set_callback_arg(in,bio_err);
- BIO_set_callback_arg(out,bio_err);
- }
-
- if (inf == NULL)
- BIO_set_fp(in,stdin,BIO_NOCLOSE);
- else
- {
- if (BIO_read_filename(in,inf) <= 0)
- {
- perror(inf);
- goto end;
- }
- }
-
- if ((str == NULL) && (cipher != NULL) && (hkey == NULL))
- {
- for (;;)
- {
- char buf[200];
-
- sprintf(buf,"enter %s %s password:",
- OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
- (enc)?"encryption":"decryption");
- strbuf[0]='\0';
- i=EVP_read_pw_string((char *)strbuf,SIZE,buf,enc);
- if (i == 0)
- {
- if (strbuf[0] == '\0')
- {
- ret=1;
- goto end;
- }
- str=strbuf;
- break;
- }
- if (i < 0)
- {
- BIO_printf(bio_err,"bad password read\n");
- goto end;
- }
- }
- }
-
-
- if (outf == NULL)
- BIO_set_fp(out,stdout,BIO_NOCLOSE);
- else
- {
- if (BIO_write_filename(out,outf) <= 0)
- {
- perror(outf);
- goto end;
- }
- }
-
- rbio=in;
- wbio=out;
-
- if (base64)
- {
- if ((b64=BIO_new(BIO_f_base64())) == NULL)
- goto end;
- if (debug)
- {
- BIO_set_callback(b64,BIO_debug_callback);
- BIO_set_callback_arg(b64,bio_err);
- }
- if (olb64)
- BIO_set_flags(b64,BIO_FLAGS_BASE64_NO_NL);
- if (enc)
- wbio=BIO_push(b64,wbio);
- else
- rbio=BIO_push(b64,rbio);
- }
-
- if (cipher != NULL)
- {
- if (str != NULL)
- {
- /* Salt handling: if encrypting generate a salt and
- * write to output BIO. If decrypting read salt from
- * input BIO.
- */
- unsigned char *sptr;
- if(nosalt) sptr = NULL;
- else {
- if(enc) {
- if(hsalt) {
- if(!set_hex(hsalt,salt,PKCS5_SALT_LEN)) {
- BIO_printf(bio_err,
- "invalid hex salt value\n");
- goto end;
- }
- } else if (RAND_pseudo_bytes(salt, PKCS5_SALT_LEN) < 0)
- goto end;
- /* If -P option then don't bother writing */
- if((printkey != 2)
- && (BIO_write(wbio,magic,
- sizeof magic-1) != sizeof magic-1
- || BIO_write(wbio,
- (char *)salt,
- PKCS5_SALT_LEN) != PKCS5_SALT_LEN)) {
- BIO_printf(bio_err,"error writing output file\n");
- goto end;
- }
- } else if(BIO_read(rbio,mbuf,sizeof mbuf) != sizeof mbuf
- || BIO_read(rbio,
- (unsigned char *)salt,
- PKCS5_SALT_LEN) != PKCS5_SALT_LEN) {
- BIO_printf(bio_err,"error reading input file\n");
- goto end;
- } else if(memcmp(mbuf,magic,sizeof magic-1)) {
- BIO_printf(bio_err,"bad magic number\n");
- goto end;
- }
-
- sptr = salt;
- }
-
- EVP_BytesToKey(cipher,EVP_md5(),sptr,
- (unsigned char *)str,
- strlen(str),1,key,iv);
- /* zero the complete buffer or the string
- * passed from the command line
- * bug picked up by
- * Larry J. Hughes Jr. <hughes@indiana.edu> */
- if (str == strbuf)
- memset(str,0,SIZE);
- else
- memset(str,0,strlen(str));
- }
- if ((hiv != NULL) && !set_hex(hiv,iv,8))
- {
- BIO_printf(bio_err,"invalid hex iv value\n");
- goto end;
- }
- if ((hkey != NULL) && !set_hex(hkey,key,24))
- {
- BIO_printf(bio_err,"invalid hex key value\n");
- goto end;
- }
-
- if ((benc=BIO_new(BIO_f_cipher())) == NULL)
- goto end;
- BIO_set_cipher(benc,cipher,key,iv,enc);
- if (debug)
- {
- BIO_set_callback(benc,BIO_debug_callback);
- BIO_set_callback_arg(benc,bio_err);
- }
-
- if (printkey)
- {
- if (!nosalt)
- {
- printf("salt=");
- for (i=0; i<PKCS5_SALT_LEN; i++)
- printf("%02X",salt[i]);
- printf("\n");
- }
- if (cipher->key_len > 0)
- {
- printf("key=");
- for (i=0; i<cipher->key_len; i++)
- printf("%02X",key[i]);
- printf("\n");
- }
- if (cipher->iv_len > 0)
- {
- printf("iv =");
- for (i=0; i<cipher->iv_len; i++)
- printf("%02X",iv[i]);
- printf("\n");
- }
- if (printkey == 2)
- {
- ret=0;
- goto end;
- }
- }
- }
-
- /* Only encrypt/decrypt as we write the file */
- if (benc != NULL)
- wbio=BIO_push(benc,wbio);
-
- for (;;)
- {
- inl=BIO_read(rbio,(char *)buff,bsize);
- if (inl <= 0) break;
- if (BIO_write(wbio,(char *)buff,inl) != inl)
- {
- BIO_printf(bio_err,"error writing output file\n");
- goto end;
- }
- }
- if (!BIO_flush(wbio))
- {
- BIO_printf(bio_err,"bad decrypt\n");
- goto end;
- }
-
- ret=0;
- if (verbose)
- {
- BIO_printf(bio_err,"bytes read :%8ld\n",BIO_number_read(in));
- BIO_printf(bio_err,"bytes written:%8ld\n",BIO_number_written(out));
- }
-end:
- ERR_print_errors(bio_err);
- if (strbuf != NULL) Free(strbuf);
- if (buff != NULL) Free(buff);
- if (in != NULL) BIO_free(in);
- if (out != NULL) BIO_free(out);
- if (benc != NULL) BIO_free(benc);
- if (b64 != NULL) BIO_free(b64);
- EXIT(ret);
- }
-
-int set_hex(char *in, unsigned char *out, int size)
- {
- int i,n;
- unsigned char j;
-
- n=strlen(in);
- if (n > (size*2))
- {
- BIO_printf(bio_err,"hex string is too long\n");
- return(0);
- }
- memset(out,0,size);
- for (i=0; i<n; i++)
- {
- j=(unsigned char)*in;
- *(in++)='\0';
- if (j == 0) break;
- if ((j >= '0') && (j <= '9'))
- j-='0';
- else if ((j >= 'A') && (j <= 'F'))
- j=j-'A'+10;
- else if ((j >= 'a') && (j <= 'f'))
- j=j-'a'+10;
- else
- {
- BIO_printf(bio_err,"non-hex digit\n");
- return(0);
- }
- if (i&1)
- out[i/2]|=j;
- else
- out[i/2]=(j<<4);
- }
- return(1);
- }