[thirdparty/openssl.git] / apps / enc.c

/* apps/enc.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "apps.h"
#include <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
#include <openssl/rand.h>
#include <openssl/pem.h>
#include <ctype.h>

int set_hex(char *in, unsigned char *out, int size);
#undef SIZE
#undef BSIZE
#undef PROG

#define SIZE    (512)
#define BSIZE   (8*1024)
#define PROG    enc_main

static void show_ciphers(const OBJ_NAME *name, void *bio_)
{
    BIO *bio = bio_;
    static int n;

    if (!islower((unsigned char)*name->name))
        return;

    BIO_printf(bio, "-%-25s", name->name);
    if (++n == 3) {
        BIO_printf(bio, "\n");
        n = 0;
    } else
        BIO_printf(bio, " ");
}

int MAIN(int, char **);

int MAIN(int argc, char **argv)
{
    static const char magic[] = "Salted__";
    char mbuf[sizeof magic - 1];
    char *strbuf = NULL;
    unsigned char *buff = NULL, *bufsize = NULL;
    int bsize = BSIZE, verbose = 0;
    int ret = 1, inl;
    int nopad = 0;
    unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
    unsigned char salt[PKCS5_SALT_LEN];
    char *str = NULL, *passarg = NULL, *pass = NULL;
    char *hkey = NULL, *hiv = NULL, *hsalt = NULL;
    char *md = NULL;
    int enc = 1, printkey = 0, i, base64 = 0;
    int debug = 0, olb64 = 0, nosalt = 0;
    const EVP_CIPHER *cipher = NULL, *c;
    EVP_CIPHER_CTX *ctx = NULL;
    char *inf = NULL, *outf = NULL;
    BIO *in = NULL, *out = NULL, *b64 = NULL, *benc = NULL, *rbio =
        NULL, *wbio = NULL;
#define PROG_NAME_SIZE  39
    char pname[PROG_NAME_SIZE + 1];
#ifndef OPENSSL_NO_ENGINE
    char *engine = NULL;
#endif
    const EVP_MD *dgst = NULL;
    int non_fips_allow = 0;

    apps_startup();

    if (bio_err == NULL)
        if ((bio_err = BIO_new(BIO_s_file())) != NULL)
            BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);

    if (!load_config(bio_err, NULL))
        goto end;

    /* first check the program name */
    program_name(argv[0], pname, sizeof pname);
    if (strcmp(pname, "base64") == 0)
        base64 = 1;

    cipher = EVP_get_cipherbyname(pname);
    if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0)) {
        BIO_printf(bio_err, "%s is an unknown cipher\n", pname);
        goto bad;
    }

    argc--;
    argv++;
    while (argc >= 1) {
        if (strcmp(*argv, "-e") == 0)
            enc = 1;
        else if (strcmp(*argv, "-in") == 0) {
            if (--argc < 1)
                goto bad;
            inf = *(++argv);
        } else if (strcmp(*argv, "-out") == 0) {
            if (--argc < 1)
                goto bad;
            outf = *(++argv);
        } else if (strcmp(*argv, "-pass") == 0) {
            if (--argc < 1)
                goto bad;
            passarg = *(++argv);
        }
#ifndef OPENSSL_NO_ENGINE
        else if (strcmp(*argv, "-engine") == 0) {
            if (--argc < 1)
                goto bad;
            engine = *(++argv);
        }
#endif
        else if (strcmp(*argv, "-d") == 0)
            enc = 0;
        else if (strcmp(*argv, "-p") == 0)
            printkey = 1;
        else if (strcmp(*argv, "-v") == 0)
            verbose = 1;
        else if (strcmp(*argv, "-nopad") == 0)
            nopad = 1;
        else if (strcmp(*argv, "-salt") == 0)
            nosalt = 0;
        else if (strcmp(*argv, "-nosalt") == 0)
            nosalt = 1;
        else if (strcmp(*argv, "-debug") == 0)
            debug = 1;
        else if (strcmp(*argv, "-P") == 0)
            printkey = 2;
        else if (strcmp(*argv, "-A") == 0)
            olb64 = 1;
        else if (strcmp(*argv, "-a") == 0)
            base64 = 1;
        else if (strcmp(*argv, "-base64") == 0)
            base64 = 1;
        else if (strcmp(*argv, "-bufsize") == 0) {
            if (--argc < 1)
                goto bad;
            bufsize = (unsigned char *)*(++argv);
        } else if (strcmp(*argv, "-k") == 0) {
            if (--argc < 1)
                goto bad;
            str = *(++argv);
        } else if (strcmp(*argv, "-kfile") == 0) {
            static char buf[128];
            FILE *infile;
            char *file;

            if (--argc < 1)
                goto bad;
            file = *(++argv);
            infile = fopen(file, "r");
            if (infile == NULL) {
                BIO_printf(bio_err, "unable to read key from '%s'\n", file);
                goto bad;
            }
            buf[0] = '\0';
            if (!fgets(buf, sizeof buf, infile)) {
                BIO_printf(bio_err, "unable to read key from '%s'\n", file);
                goto bad;
            }
            fclose(infile);
            i = strlen(buf);
            if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
                buf[--i] = '\0';
            if ((i > 0) && ((buf[i - 1] == '\n') || (buf[i - 1] == '\r')))
                buf[--i] = '\0';
            if (i < 1) {
                BIO_printf(bio_err, "zero length password\n");
                goto bad;
            }
            str = buf;
        } else if (strcmp(*argv, "-K") == 0) {
            if (--argc < 1)
                goto bad;
            hkey = *(++argv);
        } else if (strcmp(*argv, "-S") == 0) {
            if (--argc < 1)
                goto bad;
            hsalt = *(++argv);
        } else if (strcmp(*argv, "-iv") == 0) {
            if (--argc < 1)
                goto bad;
            hiv = *(++argv);
        } else if (strcmp(*argv, "-md") == 0) {
            if (--argc < 1)
                goto bad;
            md = *(++argv);
        } else if (strcmp(*argv, "-non-fips-allow") == 0)
            non_fips_allow = 1;
        else if ((argv[0][0] == '-') &&
                 ((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) {
            cipher = c;
        } else if (strcmp(*argv, "-none") == 0)
            cipher = NULL;
        else {
            BIO_printf(bio_err, "unknown option '%s'\n", *argv);
 bad:
            BIO_printf(bio_err, "options are\n");
            BIO_printf(bio_err, "%-14s input file\n", "-in <file>");
            BIO_printf(bio_err, "%-14s output file\n", "-out <file>");
            BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>");
            BIO_printf(bio_err, "%-14s encrypt\n", "-e");
            BIO_printf(bio_err, "%-14s decrypt\n", "-d");
            BIO_printf(bio_err,
                       "%-14s base64 encode/decode, depending on encryption flag\n",
                       "-a/-base64");
            BIO_printf(bio_err, "%-14s passphrase is the next argument\n",
                       "-k");
            BIO_printf(bio_err,
                       "%-14s passphrase is the first line of the file argument\n",
                       "-kfile");
            BIO_printf(bio_err,
                       "%-14s the next argument is the md to use to create a key\n",
                       "-md");
            BIO_printf(bio_err,
                       "%-14s   from a passphrase.  One of md2, md5, sha or sha1\n",
                       "");
            BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n",
                       "-K/-iv");
            BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n",
                       "-[pP]");
            BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>");
#ifndef OPENSSL_NO_ENGINE
            BIO_printf(bio_err,
                       "%-14s use engine e, possibly a hardware device.\n",
                       "-engine e");
#endif

            BIO_printf(bio_err, "Cipher Types\n");
            OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
                                   show_ciphers, bio_err);
            BIO_printf(bio_err, "\n");

            goto end;
        }
        argc--;
        argv++;
    }

#ifndef OPENSSL_NO_ENGINE
    setup_engine(bio_err, engine, 0);
#endif

    if (md && (dgst = EVP_get_digestbyname(md)) == NULL) {
        BIO_printf(bio_err, "%s is an unsupported message digest type\n", md);
        goto end;
    }

    if (dgst == NULL) {
        if (in_FIPS_mode)
            dgst = EVP_sha1();
        else
            dgst = EVP_md5();
    }

    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 (base64 && n < 80)
            n = 80;

        bsize = (int)n;
        if (verbose)
            BIO_printf(bio_err, "bufsize=%d\n", bsize);
    }

    strbuf = OPENSSL_malloc(SIZE);
    buff = (unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
    if ((buff == NULL) || (strbuf == NULL)) {
        BIO_printf(bio_err, "OPENSSL_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, (char *)bio_err);
        BIO_set_callback_arg(out, (char *)bio_err);
    }

    if (inf == NULL) {
        if (bufsize != NULL)
            setvbuf(stdin, (char *)NULL, _IONBF, 0);
        BIO_set_fp(in, stdin, BIO_NOCLOSE);
    } else {
        if (BIO_read_filename(in, inf) <= 0) {
            perror(inf);
            goto end;
        }
    }

    if (!str && passarg) {
        if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
            BIO_printf(bio_err, "Error getting password\n");
            goto end;
        }
        str = pass;
    }

    if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
        for (;;) {
            char buf[200];

            BIO_snprintf(buf, sizeof 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);
        if (bufsize != NULL)
            setvbuf(stdout, (char *)NULL, _IONBF, 0);
#ifdef OPENSSL_SYS_VMS
        {
            BIO *tmpbio = BIO_new(BIO_f_linebuffer());
            out = BIO_push(tmpbio, out);
        }
#endif
    } 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, (char *)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) {
        /*
         * Note that str is NULL if a key was passed on the command line, so
         * we get no salt in that case. Is this a bug?
         */
        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, sizeof salt)) {
                            BIO_printf(bio_err, "invalid hex salt value\n");
                            goto end;
                        }
                    } else if (RAND_pseudo_bytes(salt, sizeof salt) < 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,
                                         sizeof salt) != sizeof salt)) {
                        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,
                                       sizeof salt) != sizeof salt) {
                    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, dgst, 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)
                OPENSSL_cleanse(str, SIZE);
            else
                OPENSSL_cleanse(str, strlen(str));
        }
        if ((hiv != NULL) && !set_hex(hiv, iv, sizeof iv)) {
            BIO_printf(bio_err, "invalid hex iv value\n");
            goto end;
        }
        if ((hiv == NULL) && (str == NULL)
            && EVP_CIPHER_iv_length(cipher) != 0) {
            /*
             * No IV was explicitly set and no IV was generated during
             * EVP_BytesToKey. Hence the IV is undefined, making correct
             * decryption impossible.
             */
            BIO_printf(bio_err, "iv undefined\n");
            goto end;
        }
        if ((hkey != NULL) && !set_hex(hkey, key, sizeof key)) {
            BIO_printf(bio_err, "invalid hex key value\n");
            goto end;
        }

        if ((benc = BIO_new(BIO_f_cipher())) == NULL)
            goto end;

        /*
         * Since we may be changing parameters work on the encryption context
         * rather than calling BIO_set_cipher().
         */

        BIO_get_cipher_ctx(benc, &ctx);

        if (non_fips_allow)
            EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW);

        if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
            BIO_printf(bio_err, "Error setting cipher %s\n",
                       EVP_CIPHER_name(cipher));
            ERR_print_errors(bio_err);
            goto end;
        }

        if (nopad)
            EVP_CIPHER_CTX_set_padding(ctx, 0);

        if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
            BIO_printf(bio_err, "Error setting cipher %s\n",
                       EVP_CIPHER_name(cipher));
            ERR_print_errors(bio_err);
            goto end;
        }

        if (debug) {
            BIO_set_callback(benc, BIO_debug_callback);
            BIO_set_callback_arg(benc, (char *)bio_err);
        }

        if (printkey) {
            if (!nosalt) {
                printf("salt=");
                for (i = 0; i < (int)sizeof(salt); 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)
        OPENSSL_free(strbuf);
    if (buff != NULL)
        OPENSSL_free(buff);
    if (in != NULL)
        BIO_free(in);
    if (out != NULL)
        BIO_free_all(out);
    if (benc != NULL)
        BIO_free(benc);
    if (b64 != NULL)
        BIO_free(b64);
    if (pass)
        OPENSSL_free(pass);
    apps_shutdown();
    OPENSSL_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);
}
Commit	Line	Data
d02b48c6	1	/* apps/enc.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
40720ce3	8	*
d02b48c6 RE	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
40720ce3	15	*
d02b48c6 RE	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
40720ce3	22	*
d02b48c6 RE	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
40720ce3	37	* 4. If you include any Windows specific code (or a derivative thereof) from
d02b48c6 RE	38	* the apps directory (application code) you must include an acknowledgement:
d02b48c6 RE	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40720ce3	40	*
d02b48c6 RE	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
40720ce3	52	*
d02b48c6 RE	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include <stdlib.h>
	61	#include <string.h>
	62	#include "apps.h"
ec577822 BM	63	#include <openssl/bio.h>
	64	#include <openssl/err.h>
	65	#include <openssl/evp.h>
	66	#include <openssl/objects.h>
	67	#include <openssl/x509.h>
fd699ac5	68	#include <openssl/rand.h>
ec577822	69	#include <openssl/pem.h>
646d5695	70	#include <ctype.h>
d02b48c6	71
40720ce3	72	int set_hex(char in, unsigned char out, int size);
d02b48c6 RE	73	#undef SIZE
	74	#undef BSIZE
	75	#undef PROG
	76
40720ce3 MC	77	#define SIZE (512)
	78	#define BSIZE (8*1024)
	79	#define PROG enc_main
d02b48c6	80
40720ce3 MC	81	static void show_ciphers(const OBJ_NAME name, void bio_)
	82	{
	83	BIO *bio = bio_;
	84	static int n;
646d5695	85
40720ce3 MC	86	if (!islower((unsigned char)*name->name))
40720ce3 MC	87	return;
646d5695	88
40720ce3 MC	89	BIO_printf(bio, "-%-25s", name->name);
	90	if (++n == 3) {
	91	BIO_printf(bio, "\n");
	92	n = 0;
	93	} else
	94	BIO_printf(bio, " ");
	95	}
646d5695	96
667ac4ec RE	97	int MAIN(int, char **);
667ac4ec RE	98
6b691a5c	99	int MAIN(int argc, char **argv)
40720ce3 MC	100	{
	101	static const char magic[] = "Salted__";
	102	char mbuf[sizeof magic - 1];
	103	char *strbuf = NULL;
	104	unsigned char buff = NULL, bufsize = NULL;
	105	int bsize = BSIZE, verbose = 0;
	106	int ret = 1, inl;
	107	int nopad = 0;
	108	unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
	109	unsigned char salt[PKCS5_SALT_LEN];
	110	char str = NULL, passarg = NULL, *pass = NULL;
	111	char hkey = NULL, hiv = NULL, *hsalt = NULL;
	112	char *md = NULL;
	113	int enc = 1, printkey = 0, i, base64 = 0;
	114	int debug = 0, olb64 = 0, nosalt = 0;
	115	const EVP_CIPHER cipher = NULL, c;
	116	EVP_CIPHER_CTX *ctx = NULL;
	117	char inf = NULL, outf = NULL;
	118	BIO in = NULL, out = NULL, b64 = NULL, benc = NULL, *rbio =
	119	NULL, *wbio = NULL;
dfee50ec	120	#define PROG_NAME_SIZE 39
40720ce3	121	char pname[PROG_NAME_SIZE + 1];
0b13e9f0	122	#ifndef OPENSSL_NO_ENGINE
40720ce3	123	char *engine = NULL;
0b13e9f0	124	#endif
40720ce3 MC	125	const EVP_MD *dgst = NULL;
	126	int non_fips_allow = 0;
	127
	128	apps_startup();
	129
	130	if (bio_err == NULL)
	131	if ((bio_err = BIO_new(BIO_s_file())) != NULL)
	132	BIO_set_fp(bio_err, stderr, BIO_NOCLOSE \| BIO_FP_TEXT);
	133
	134	if (!load_config(bio_err, NULL))
	135	goto end;
	136
	137	/* first check the program name */
	138	program_name(argv[0], pname, sizeof pname);
	139	if (strcmp(pname, "base64") == 0)
	140	base64 = 1;
	141
	142	cipher = EVP_get_cipherbyname(pname);
	143	if (!base64 && (cipher == NULL) && (strcmp(pname, "enc") != 0)) {
	144	BIO_printf(bio_err, "%s is an unknown cipher\n", pname);
	145	goto bad;
	146	}
	147
	148	argc--;
	149	argv++;
	150	while (argc >= 1) {
	151	if (strcmp(*argv, "-e") == 0)
	152	enc = 1;
	153	else if (strcmp(*argv, "-in") == 0) {
	154	if (--argc < 1)
	155	goto bad;
	156	inf = *(++argv);
	157	} else if (strcmp(*argv, "-out") == 0) {
	158	if (--argc < 1)
	159	goto bad;
	160	outf = *(++argv);
	161	} else if (strcmp(*argv, "-pass") == 0) {
	162	if (--argc < 1)
	163	goto bad;
	164	passarg = *(++argv);
	165	}
0b13e9f0	166	#ifndef OPENSSL_NO_ENGINE
40720ce3 MC	167	else if (strcmp(*argv, "-engine") == 0) {
	168	if (--argc < 1)
	169	goto bad;
	170	engine = *(++argv);
	171	}
0b13e9f0	172	#endif
40720ce3 MC	173	else if (strcmp(*argv, "-d") == 0)
	174	enc = 0;
	175	else if (strcmp(*argv, "-p") == 0)
	176	printkey = 1;
	177	else if (strcmp(*argv, "-v") == 0)
	178	verbose = 1;
	179	else if (strcmp(*argv, "-nopad") == 0)
	180	nopad = 1;
	181	else if (strcmp(*argv, "-salt") == 0)
	182	nosalt = 0;
	183	else if (strcmp(*argv, "-nosalt") == 0)
	184	nosalt = 1;
	185	else if (strcmp(*argv, "-debug") == 0)
	186	debug = 1;
	187	else if (strcmp(*argv, "-P") == 0)
	188	printkey = 2;
	189	else if (strcmp(*argv, "-A") == 0)
	190	olb64 = 1;
	191	else if (strcmp(*argv, "-a") == 0)
	192	base64 = 1;
	193	else if (strcmp(*argv, "-base64") == 0)
	194	base64 = 1;
	195	else if (strcmp(*argv, "-bufsize") == 0) {
	196	if (--argc < 1)
	197	goto bad;
	198	bufsize = (unsigned char )(++argv);
	199	} else if (strcmp(*argv, "-k") == 0) {
	200	if (--argc < 1)
	201	goto bad;
	202	str = *(++argv);
	203	} else if (strcmp(*argv, "-kfile") == 0) {
	204	static char buf[128];
	205	FILE *infile;
	206	char *file;
	207
	208	if (--argc < 1)
	209	goto bad;
	210	file = *(++argv);
	211	infile = fopen(file, "r");
	212	if (infile == NULL) {
	213	BIO_printf(bio_err, "unable to read key from '%s'\n", file);
	214	goto bad;
	215	}
	216	buf[0] = '\0';
	217	if (!fgets(buf, sizeof buf, infile)) {
	218	BIO_printf(bio_err, "unable to read key from '%s'\n", file);
	219	goto bad;
	220	}
	221	fclose(infile);
	222	i = strlen(buf);
	223	if ((i > 0) && ((buf[i - 1] == '\n') \|\| (buf[i - 1] == '\r')))
	224	buf[--i] = '\0';
	225	if ((i > 0) && ((buf[i - 1] == '\n') \|\| (buf[i - 1] == '\r')))
	226	buf[--i] = '\0';
	227	if (i < 1) {
	228	BIO_printf(bio_err, "zero length password\n");
	229	goto bad;
	230	}
	231	str = buf;
	232	} else if (strcmp(*argv, "-K") == 0) {
	233	if (--argc < 1)
	234	goto bad;
	235	hkey = *(++argv);
	236	} else if (strcmp(*argv, "-S") == 0) {
237	if (--argc < 1)
238	goto bad;
239	hsalt = *(++argv);
240	} else if (strcmp(*argv, "-iv") == 0) {
241	if (--argc < 1)
242	goto bad;
243	hiv = *(++argv);
244	} else if (strcmp(*argv, "-md") == 0) {
245	if (--argc < 1)
246	goto bad;
247	md = *(++argv);
248	} else if (strcmp(*argv, "-non-fips-allow") == 0)
249	non_fips_allow = 1;
250	else if ((argv[0][0] == '-') &&
251	((c = EVP_get_cipherbyname(&(argv[0][1]))) != NULL)) {
252	cipher = c;
253	} else if (strcmp(*argv, "-none") == 0)
254	cipher = NULL;
255	else {
256	BIO_printf(bio_err, "unknown option '%s'\n", *argv);
257	bad:
258	BIO_printf(bio_err, "options are\n");
259	BIO_printf(bio_err, "%-14s input file\n", "-in <file>");
260	BIO_printf(bio_err, "%-14s output file\n", "-out <file>");
261	BIO_printf(bio_err, "%-14s pass phrase source\n", "-pass <arg>");
262	BIO_printf(bio_err, "%-14s encrypt\n", "-e");
263	BIO_printf(bio_err, "%-14s decrypt\n", "-d");
264	BIO_printf(bio_err,
265	"%-14s base64 encode/decode, depending on encryption flag\n",
266	"-a/-base64");
267	BIO_printf(bio_err, "%-14s passphrase is the next argument\n",
268	"-k");
269	BIO_printf(bio_err,
270	"%-14s passphrase is the first line of the file argument\n",
271	"-kfile");
272	BIO_printf(bio_err,
273	"%-14s the next argument is the md to use to create a key\n",
274	"-md");
275	BIO_printf(bio_err,
276	"%-14s from a passphrase. One of md2, md5, sha or sha1\n",
277	"");
278	BIO_printf(bio_err, "%-14s key/iv in hex is the next argument\n",
279	"-K/-iv");
280	BIO_printf(bio_err, "%-14s print the iv/key (then exit if -P)\n",
281	"-[pP]");
282	BIO_printf(bio_err, "%-14s buffer size\n", "-bufsize <n>");
0b13e9f0	283	#ifndef OPENSSL_NO_ENGINE
40720ce3 MC	284	BIO_printf(bio_err,
	285	"%-14s use engine e, possibly a hardware device.\n",
	286	"-engine e");
0b13e9f0	287	#endif
d02b48c6	288
40720ce3 MC	289	BIO_printf(bio_err, "Cipher Types\n");
	290	OBJ_NAME_do_all_sorted(OBJ_NAME_TYPE_CIPHER_METH,
	291	show_ciphers, bio_err);
	292	BIO_printf(bio_err, "\n");
d02b48c6	293
40720ce3 MC	294	goto end;
	295	}
	296	argc--;
	297	argv++;
	298	}
d02b48c6	299
0b13e9f0	300	#ifndef OPENSSL_NO_ENGINE
40720ce3	301	setup_engine(bio_err, engine, 0);
0b13e9f0	302	#endif
5270e702	303
40720ce3 MC	304	if (md && (dgst = EVP_get_digestbyname(md)) == NULL) {
	305	BIO_printf(bio_err, "%s is an unsupported message digest type\n", md);
	306	goto end;
	307	}
	308
	309	if (dgst == NULL) {
	310	if (in_FIPS_mode)
	311	dgst = EVP_sha1();
	312	else
	313	dgst = EVP_md5();
	314	}
	315
	316	if (bufsize != NULL) {
	317	unsigned long n;
	318
	319	for (n = 0; *bufsize; bufsize++) {
	320	i = *bufsize;
	321	if ((i <= '9') && (i >= '0'))
	322	n = n * 10 + i - '0';
	323	else if (i == 'k') {
	324	n *= 1024;
	325	bufsize++;
	326	break;
	327	}
	328	}
	329	if (*bufsize != '\0') {
	330	BIO_printf(bio_err, "invalid 'bufsize' specified.\n");
	331	goto end;
	332	}
	333
	334	/* It must be large enough for a base64 encoded line */
	335	if (base64 && n < 80)
	336	n = 80;
	337
	338	bsize = (int)n;
	339	if (verbose)
	340	BIO_printf(bio_err, "bufsize=%d\n", bsize);
	341	}
	342
	343	strbuf = OPENSSL_malloc(SIZE);
	344	buff = (unsigned char *)OPENSSL_malloc(EVP_ENCODE_LENGTH(bsize));
	345	if ((buff == NULL) \|\| (strbuf == NULL)) {
	346	BIO_printf(bio_err, "OPENSSL_malloc failure %ld\n",
	347	(long)EVP_ENCODE_LENGTH(bsize));
	348	goto end;
	349	}
	350
	351	in = BIO_new(BIO_s_file());
	352	out = BIO_new(BIO_s_file());
	353	if ((in == NULL) \|\| (out == NULL)) {
	354	ERR_print_errors(bio_err);
	355	goto end;
	356	}
	357	if (debug) {
	358	BIO_set_callback(in, BIO_debug_callback);
	359	BIO_set_callback(out, BIO_debug_callback);
	360	BIO_set_callback_arg(in, (char *)bio_err);
	361	BIO_set_callback_arg(out, (char *)bio_err);
	362	}
	363
	364	if (inf == NULL) {
	365	if (bufsize != NULL)
	366	setvbuf(stdin, (char *)NULL, _IONBF, 0);
	367	BIO_set_fp(in, stdin, BIO_NOCLOSE);
368	} else {
369	if (BIO_read_filename(in, inf) <= 0) {
370	perror(inf);
371	goto end;
372	}
373	}
374
375	if (!str && passarg) {
376	if (!app_passwd(bio_err, passarg, NULL, &pass, NULL)) {
377	BIO_printf(bio_err, "Error getting password\n");
378	goto end;
379	}
380	str = pass;
381	}
382
383	if ((str == NULL) && (cipher != NULL) && (hkey == NULL)) {
384	for (;;) {
385	char buf[200];
386
387	BIO_snprintf(buf, sizeof buf, "enter %s %s password:",
388	OBJ_nid2ln(EVP_CIPHER_nid(cipher)),
389	(enc) ? "encryption" : "decryption");
390	strbuf[0] = '\0';
391	i = EVP_read_pw_string((char *)strbuf, SIZE, buf, enc);
392	if (i == 0) {
393	if (strbuf[0] == '\0') {
394	ret = 1;
395	goto end;
396	}
397	str = strbuf;
398	break;
399	}
400	if (i < 0) {
401	BIO_printf(bio_err, "bad password read\n");
402	goto end;
403	}
404	}
405	}
406
407	if (outf == NULL) {
408	BIO_set_fp(out, stdout, BIO_NOCLOSE);
409	if (bufsize != NULL)
410	setvbuf(stdout, (char *)NULL, _IONBF, 0);
bc36ee62	411	#ifdef OPENSSL_SYS_VMS
40720ce3 MC	412	{
	413	BIO *tmpbio = BIO_new(BIO_f_linebuffer());
	414	out = BIO_push(tmpbio, out);
	415	}
645749ef	416	#endif
40720ce3 MC	417	} else {
	418	if (BIO_write_filename(out, outf) <= 0) {
	419	perror(outf);
	420	goto end;
	421	}
	422	}
	423
	424	rbio = in;
	425	wbio = out;
	426
	427	if (base64) {
	428	if ((b64 = BIO_new(BIO_f_base64())) == NULL)
	429	goto end;
	430	if (debug) {
	431	BIO_set_callback(b64, BIO_debug_callback);
	432	BIO_set_callback_arg(b64, (char *)bio_err);
	433	}
	434	if (olb64)
	435	BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
	436	if (enc)
	437	wbio = BIO_push(b64, wbio);
	438	else
	439	rbio = BIO_push(b64, rbio);
	440	}
	441
	442	if (cipher != NULL) {
	443	/*
	444	* Note that str is NULL if a key was passed on the command line, so
	445	* we get no salt in that case. Is this a bug?
	446	*/
	447	if (str != NULL) {
	448	/*
	449	* Salt handling: if encrypting generate a salt and write to
	450	* output BIO. If decrypting read salt from input BIO.
	451	*/
	452	unsigned char *sptr;
	453	if (nosalt)
	454	sptr = NULL;
	455	else {
	456	if (enc) {
	457	if (hsalt) {
	458	if (!set_hex(hsalt, salt, sizeof salt)) {
	459	BIO_printf(bio_err, "invalid hex salt value\n");
	460	goto end;
	461	}
	462	} else if (RAND_pseudo_bytes(salt, sizeof salt) < 0)
	463	goto end;
	464	/*
	465	* If -P option then don't bother writing
	466	*/
	467	if ((printkey != 2)
	468	&& (BIO_write(wbio, magic,
	469	sizeof magic - 1) != sizeof magic - 1
	470	\|\| BIO_write(wbio,
	471	(char *)salt,
	472	sizeof salt) != sizeof salt)) {
	473	BIO_printf(bio_err, "error writing output file\n");
	474	goto end;
	475	}
	476	} else if (BIO_read(rbio, mbuf, sizeof mbuf) != sizeof mbuf
	477	\|\| BIO_read(rbio,
	478	(unsigned char *)salt,
	479	sizeof salt) != sizeof salt) {
	480	BIO_printf(bio_err, "error reading input file\n");
481	goto end;
482	} else if (memcmp(mbuf, magic, sizeof magic - 1)) {
483	BIO_printf(bio_err, "bad magic number\n");
484	goto end;
485	}
486
487	sptr = salt;
488	}
489
490	EVP_BytesToKey(cipher, dgst, sptr,
491	(unsigned char *)str, strlen(str), 1, key, iv);
492	/*
493	* zero the complete buffer or the string passed from the command
494	* line bug picked up by Larry J. Hughes Jr. <hughes@indiana.edu>
495	*/
496	if (str == strbuf)
497	OPENSSL_cleanse(str, SIZE);
498	else
499	OPENSSL_cleanse(str, strlen(str));
500	}
501	if ((hiv != NULL) && !set_hex(hiv, iv, sizeof iv)) {
502	BIO_printf(bio_err, "invalid hex iv value\n");
503	goto end;
504	}
505	if ((hiv == NULL) && (str == NULL)
506	&& EVP_CIPHER_iv_length(cipher) != 0) {
507	/*
508	* No IV was explicitly set and no IV was generated during
509	* EVP_BytesToKey. Hence the IV is undefined, making correct
510	* decryption impossible.
511	*/
512	BIO_printf(bio_err, "iv undefined\n");
513	goto end;
514	}
515	if ((hkey != NULL) && !set_hex(hkey, key, sizeof key)) {
516	BIO_printf(bio_err, "invalid hex key value\n");
517	goto end;
518	}
519
520	if ((benc = BIO_new(BIO_f_cipher())) == NULL)
521	goto end;
522
523	/*
524	* Since we may be changing parameters work on the encryption context
525	* rather than calling BIO_set_cipher().
526	*/
527
528	BIO_get_cipher_ctx(benc, &ctx);
529
530	if (non_fips_allow)
531	EVP_CIPHER_CTX_set_flags(ctx, EVP_CIPH_FLAG_NON_FIPS_ALLOW);
532
533	if (!EVP_CipherInit_ex(ctx, cipher, NULL, NULL, NULL, enc)) {
534	BIO_printf(bio_err, "Error setting cipher %s\n",
535	EVP_CIPHER_name(cipher));
536	ERR_print_errors(bio_err);
537	goto end;
538	}
539
540	if (nopad)
541	EVP_CIPHER_CTX_set_padding(ctx, 0);
542
543	if (!EVP_CipherInit_ex(ctx, NULL, NULL, key, iv, enc)) {
544	BIO_printf(bio_err, "Error setting cipher %s\n",
545	EVP_CIPHER_name(cipher));
546	ERR_print_errors(bio_err);
547	goto end;
548	}
549
550	if (debug) {
551	BIO_set_callback(benc, BIO_debug_callback);
552	BIO_set_callback_arg(benc, (char *)bio_err);
553	}
554
555	if (printkey) {
556	if (!nosalt) {
557	printf("salt=");
558	for (i = 0; i < (int)sizeof(salt); i++)
559	printf("%02X", salt[i]);
560	printf("\n");
561	}
562	if (cipher->key_len > 0) {
563	printf("key=");
564	for (i = 0; i < cipher->key_len; i++)
565	printf("%02X", key[i]);
566	printf("\n");
567	}
568	if (cipher->iv_len > 0) {
569	printf("iv =");
570	for (i = 0; i < cipher->iv_len; i++)
571	printf("%02X", iv[i]);
572	printf("\n");
573	}
574	if (printkey == 2) {
575	ret = 0;
576	goto end;
577	}
578	}
579	}
580
581	/* Only encrypt/decrypt as we write the file */
582	if (benc != NULL)
583	wbio = BIO_push(benc, wbio);
584
585	for (;;) {
586	inl = BIO_read(rbio, (char *)buff, bsize);
587	if (inl <= 0)
588	break;
589	if (BIO_write(wbio, (char *)buff, inl) != inl) {
590	BIO_printf(bio_err, "error writing output file\n");
591	goto end;
592	}
593	}
594	if (!BIO_flush(wbio)) {
595	BIO_printf(bio_err, "bad decrypt\n");
596	goto end;
597	}
598
599	ret = 0;
600	if (verbose) {
601	BIO_printf(bio_err, "bytes read :%8ld\n", BIO_number_read(in));
602	BIO_printf(bio_err, "bytes written:%8ld\n", BIO_number_written(out));
603	}
604	end:
605	ERR_print_errors(bio_err);
606	if (strbuf != NULL)
607	OPENSSL_free(strbuf);
608	if (buff != NULL)
609	OPENSSL_free(buff);
610	if (in != NULL)
611	BIO_free(in);
612	if (out != NULL)
613	BIO_free_all(out);
614	if (benc != NULL)
615	BIO_free(benc);
616	if (b64 != NULL)
617	BIO_free(b64);
618	if (pass)
619	OPENSSL_free(pass);
620	apps_shutdown();
621	OPENSSL_EXIT(ret);
622	}
d02b48c6	623
6b691a5c	624	int set_hex(char in, unsigned char out, int size)
40720ce3 MC	625	{
	626	int i, n;
	627	unsigned char j;
	628
	629	n = strlen(in);
	630	if (n > (size * 2)) {
	631	BIO_printf(bio_err, "hex string is too long\n");
	632	return (0);
	633	}
	634	memset(out, 0, size);
	635	for (i = 0; i < n; i++) {
	636	j = (unsigned char)*in;
	637	*(in++) = '\0';
	638	if (j == 0)
	639	break;
	640	if ((j >= '0') && (j <= '9'))
	641	j -= '0';
	642	else if ((j >= 'A') && (j <= 'F'))
	643	j = j - 'A' + 10;
	644	else if ((j >= 'a') && (j <= 'f'))
	645	j = j - 'a' + 10;
	646	else {
	647	BIO_printf(bio_err, "non-hex digit\n");
	648	return (0);
	649	}
	650	if (i & 1)
	651	out[i / 2] \|= j;
	652	else
	653	out[i / 2] = (j << 4);
	654	}
	655	return (1);
	656	}