| /* |
| * Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| */ |
| |
| #include <string.h> |
| |
| #include "apps.h" |
| #include "progs.h" |
| |
| #include <openssl/bio.h> |
| #include <openssl/err.h> |
| #include <openssl/evp.h> |
| #include <openssl/rand.h> |
| #if !defined(OPENSSL_NO_DES) && !defined(OPENSSL_NO_DEPRECATED_3_0) |
| # include <openssl/des.h> |
| #endif |
| #include <openssl/md5.h> |
| #include <openssl/sha.h> |
| |
| static const unsigned char cov_2char[64] = { |
| /* from crypto/des/fcrypt.c */ |
| 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, |
| 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, |
| 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, |
| 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, |
| 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, |
| 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, |
| 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, |
| 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A |
| }; |
| |
| static const char ascii_dollar[] = { 0x24, 0x00 }; |
| |
| typedef enum { |
| passwd_unset = 0, |
| passwd_md5, |
| passwd_apr1, |
| passwd_sha256, |
| passwd_sha512, |
| passwd_aixmd5 |
| } passwd_modes; |
| |
| static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
| char *passwd, BIO *out, int quiet, int table, |
| int reverse, size_t pw_maxlen, passwd_modes mode); |
| |
| typedef enum OPTION_choice { |
| OPT_COMMON, |
| OPT_IN, |
| OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1, |
| OPT_1, OPT_5, OPT_6, OPT_AIXMD5, OPT_SALT, OPT_STDIN, |
| OPT_R_ENUM, OPT_PROV_ENUM |
| } OPTION_CHOICE; |
| |
| const OPTIONS passwd_options[] = { |
| {OPT_HELP_STR, 1, '-', "Usage: %s [options] [password]\n"}, |
| |
| OPT_SECTION("General"), |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| |
| OPT_SECTION("Input"), |
| {"in", OPT_IN, '<', "Read passwords from file"}, |
| {"noverify", OPT_NOVERIFY, '-', |
| "Never verify when reading password from terminal"}, |
| {"stdin", OPT_STDIN, '-', "Read passwords from stdin"}, |
| |
| OPT_SECTION("Output"), |
| {"quiet", OPT_QUIET, '-', "No warnings"}, |
| {"table", OPT_TABLE, '-', "Format output as table"}, |
| {"reverse", OPT_REVERSE, '-', "Switch table columns"}, |
| |
| OPT_SECTION("Cryptographic"), |
| {"salt", OPT_SALT, 's', "Use provided salt"}, |
| {"6", OPT_6, '-', "SHA512-based password algorithm"}, |
| {"5", OPT_5, '-', "SHA256-based password algorithm"}, |
| {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"}, |
| {"1", OPT_1, '-', "MD5-based password algorithm"}, |
| {"aixmd5", OPT_AIXMD5, '-', "AIX MD5-based password algorithm"}, |
| |
| OPT_R_OPTIONS, |
| OPT_PROV_OPTIONS, |
| |
| OPT_PARAMETERS(), |
| {"password", 0, 0, "Password text to digest (optional)"}, |
| {NULL} |
| }; |
| |
| int passwd_main(int argc, char **argv) |
| { |
| BIO *in = NULL; |
| char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL; |
| char *salt_malloc = NULL, *passwd_malloc = NULL, *prog; |
| OPTION_CHOICE o; |
| int in_stdin = 0, pw_source_defined = 0; |
| #ifndef OPENSSL_NO_UI_CONSOLE |
| int in_noverify = 0; |
| #endif |
| int passed_salt = 0, quiet = 0, table = 0, reverse = 0; |
| int ret = 1; |
| passwd_modes mode = passwd_unset; |
| size_t passwd_malloc_size = 0; |
| size_t pw_maxlen = 256; /* arbitrary limit, should be enough for most |
| * passwords */ |
| |
| prog = opt_init(argc, argv, passwd_options); |
| while ((o = opt_next()) != OPT_EOF) { |
| switch (o) { |
| case OPT_EOF: |
| case OPT_ERR: |
| opthelp: |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| case OPT_HELP: |
| opt_help(passwd_options); |
| ret = 0; |
| goto end; |
| case OPT_IN: |
| if (pw_source_defined) |
| goto opthelp; |
| infile = opt_arg(); |
| pw_source_defined = 1; |
| break; |
| case OPT_NOVERIFY: |
| #ifndef OPENSSL_NO_UI_CONSOLE |
| in_noverify = 1; |
| #endif |
| break; |
| case OPT_QUIET: |
| quiet = 1; |
| break; |
| case OPT_TABLE: |
| table = 1; |
| break; |
| case OPT_REVERSE: |
| reverse = 1; |
| break; |
| case OPT_1: |
| if (mode != passwd_unset) |
| goto opthelp; |
| mode = passwd_md5; |
| break; |
| case OPT_5: |
| if (mode != passwd_unset) |
| goto opthelp; |
| mode = passwd_sha256; |
| break; |
| case OPT_6: |
| if (mode != passwd_unset) |
| goto opthelp; |
| mode = passwd_sha512; |
| break; |
| case OPT_APR1: |
| if (mode != passwd_unset) |
| goto opthelp; |
| mode = passwd_apr1; |
| break; |
| case OPT_AIXMD5: |
| if (mode != passwd_unset) |
| goto opthelp; |
| mode = passwd_aixmd5; |
| break; |
| case OPT_SALT: |
| passed_salt = 1; |
| salt = opt_arg(); |
| break; |
| case OPT_STDIN: |
| if (pw_source_defined) |
| goto opthelp; |
| in_stdin = 1; |
| pw_source_defined = 1; |
| break; |
| case OPT_R_CASES: |
| if (!opt_rand(o)) |
| goto end; |
| break; |
| case OPT_PROV_CASES: |
| if (!opt_provider(o)) |
| goto end; |
| break; |
| } |
| } |
| |
| /* All remaining arguments are the password text */ |
| argc = opt_num_rest(); |
| argv = opt_rest(); |
| if (*argv != NULL) { |
| if (pw_source_defined) |
| goto opthelp; |
| pw_source_defined = 1; |
| passwds = argv; |
| } |
| |
| if (!app_RAND_load()) |
| goto end; |
| |
| if (mode == passwd_unset) { |
| /* use default */ |
| mode = passwd_md5; |
| } |
| |
| if (infile != NULL && in_stdin) { |
| BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog); |
| goto end; |
| } |
| |
| if (infile != NULL || in_stdin) { |
| /* |
| * If in_stdin is true, we know that infile is NULL, and that |
| * bio_open_default() will give us back an alias for stdin. |
| */ |
| in = bio_open_default(infile, 'r', FORMAT_TEXT); |
| if (in == NULL) |
| goto end; |
| } |
| |
| if (passwds == NULL) { |
| /* no passwords on the command line */ |
| |
| passwd_malloc_size = pw_maxlen + 2; |
| /* longer than necessary so that we can warn about truncation */ |
| passwd = passwd_malloc = |
| app_malloc(passwd_malloc_size, "password buffer"); |
| } |
| |
| if ((in == NULL) && (passwds == NULL)) { |
| /* |
| * we use the following method to make sure what |
| * in the 'else' section is always compiled, to |
| * avoid rot of not-frequently-used code. |
| */ |
| if (1) { |
| #ifndef OPENSSL_NO_UI_CONSOLE |
| /* build a null-terminated list */ |
| static char *passwds_static[2] = { NULL, NULL }; |
| |
| passwds = passwds_static; |
| if (in == NULL) { |
| if (EVP_read_pw_string |
| (passwd_malloc, passwd_malloc_size, "Password: ", |
| !(passed_salt || in_noverify)) != 0) |
| goto end; |
| } |
| passwds[0] = passwd_malloc; |
| } else { |
| #endif |
| BIO_printf(bio_err, "password required\n"); |
| goto end; |
| } |
| } |
| |
| if (in == NULL) { |
| assert(passwds != NULL); |
| assert(*passwds != NULL); |
| |
| do { /* loop over list of passwords */ |
| passwd = *passwds++; |
| if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out, |
| quiet, table, reverse, pw_maxlen, mode)) |
| goto end; |
| } while (*passwds != NULL); |
| } else { |
| /* in != NULL */ |
| int done; |
| |
| assert(passwd != NULL); |
| do { |
| int r = BIO_gets(in, passwd, pw_maxlen + 1); |
| if (r > 0) { |
| char *c = (strchr(passwd, '\n')); |
| if (c != NULL) { |
| *c = 0; /* truncate at newline */ |
| } else { |
| /* ignore rest of line */ |
| char trash[BUFSIZ]; |
| do |
| r = BIO_gets(in, trash, sizeof(trash)); |
| while ((r > 0) && (!strchr(trash, '\n'))); |
| } |
| |
| if (!do_passwd |
| (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet, |
| table, reverse, pw_maxlen, mode)) |
| goto end; |
| } |
| done = (r <= 0); |
| } while (!done); |
| } |
| ret = 0; |
| |
| end: |
| #if 0 |
| ERR_print_errors(bio_err); |
| #endif |
| OPENSSL_free(salt_malloc); |
| OPENSSL_free(passwd_malloc); |
| BIO_free(in); |
| return ret; |
| } |
| |
| /* |
| * MD5-based password algorithm (should probably be available as a library |
| * function; then the static buffer would not be acceptable). For magic |
| * string "1", this should be compatible to the MD5-based BSD password |
| * algorithm. For 'magic' string "apr1", this is compatible to the MD5-based |
| * Apache password algorithm. (Apparently, the Apache password algorithm is |
| * identical except that the 'magic' string was changed -- the laziest |
| * application of the NIH principle I've ever encountered.) |
| */ |
| static char *md5crypt(const char *passwd, const char *magic, const char *salt) |
| { |
| /* "$apr1$..salt..$.......md5hash..........\0" */ |
| static char out_buf[6 + 9 + 24 + 2]; |
| unsigned char buf[MD5_DIGEST_LENGTH]; |
| char ascii_magic[5]; /* "apr1" plus '\0' */ |
| char ascii_salt[9]; /* Max 8 chars plus '\0' */ |
| char *ascii_passwd = NULL; |
| char *salt_out; |
| int n; |
| unsigned int i; |
| EVP_MD_CTX *md = NULL, *md2 = NULL; |
| size_t passwd_len, salt_len, magic_len; |
| |
| passwd_len = strlen(passwd); |
| |
| out_buf[0] = 0; |
| magic_len = strlen(magic); |
| OPENSSL_strlcpy(ascii_magic, magic, sizeof(ascii_magic)); |
| #ifdef CHARSET_EBCDIC |
| if ((magic[0] & 0x80) != 0) /* High bit is 1 in EBCDIC alnums */ |
| ebcdic2ascii(ascii_magic, ascii_magic, magic_len); |
| #endif |
| |
| /* The salt gets truncated to 8 chars */ |
| OPENSSL_strlcpy(ascii_salt, salt, sizeof(ascii_salt)); |
| salt_len = strlen(ascii_salt); |
| #ifdef CHARSET_EBCDIC |
| ebcdic2ascii(ascii_salt, ascii_salt, salt_len); |
| #endif |
| |
| #ifdef CHARSET_EBCDIC |
| ascii_passwd = OPENSSL_strdup(passwd); |
| if (ascii_passwd == NULL) |
| return NULL; |
| ebcdic2ascii(ascii_passwd, ascii_passwd, passwd_len); |
| passwd = ascii_passwd; |
| #endif |
| |
| if (magic_len > 0) { |
| OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
| |
| if (magic_len > 4) /* assert it's "1" or "apr1" */ |
| goto err; |
| |
| OPENSSL_strlcat(out_buf, ascii_magic, sizeof(out_buf)); |
| OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
| } |
| |
| OPENSSL_strlcat(out_buf, ascii_salt, sizeof(out_buf)); |
| |
| if (strlen(out_buf) > 6 + 8) /* assert "$apr1$..salt.." */ |
| goto err; |
| |
| salt_out = out_buf; |
| if (magic_len > 0) |
| salt_out += 2 + magic_len; |
| |
| if (salt_len > 8) |
| goto err; |
| |
| md = EVP_MD_CTX_new(); |
| if (md == NULL |
| || !EVP_DigestInit_ex(md, EVP_md5(), NULL) |
| || !EVP_DigestUpdate(md, passwd, passwd_len)) |
| goto err; |
| |
| if (magic_len > 0) |
| if (!EVP_DigestUpdate(md, ascii_dollar, 1) |
| || !EVP_DigestUpdate(md, ascii_magic, magic_len) |
| || !EVP_DigestUpdate(md, ascii_dollar, 1)) |
| goto err; |
| |
| if (!EVP_DigestUpdate(md, ascii_salt, salt_len)) |
| goto err; |
| |
| md2 = EVP_MD_CTX_new(); |
| if (md2 == NULL |
| || !EVP_DigestInit_ex(md2, EVP_md5(), NULL) |
| || !EVP_DigestUpdate(md2, passwd, passwd_len) |
| || !EVP_DigestUpdate(md2, ascii_salt, salt_len) |
| || !EVP_DigestUpdate(md2, passwd, passwd_len) |
| || !EVP_DigestFinal_ex(md2, buf, NULL)) |
| goto err; |
| |
| for (i = passwd_len; i > sizeof(buf); i -= sizeof(buf)) { |
| if (!EVP_DigestUpdate(md, buf, sizeof(buf))) |
| goto err; |
| } |
| if (!EVP_DigestUpdate(md, buf, i)) |
| goto err; |
| |
| n = passwd_len; |
| while (n) { |
| if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1)) |
| goto err; |
| n >>= 1; |
| } |
| if (!EVP_DigestFinal_ex(md, buf, NULL)) |
| goto err; |
| |
| for (i = 0; i < 1000; i++) { |
| if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL)) |
| goto err; |
| if (!EVP_DigestUpdate(md2, |
| (i & 1) ? (const unsigned char *)passwd : buf, |
| (i & 1) ? passwd_len : sizeof(buf))) |
| goto err; |
| if (i % 3) { |
| if (!EVP_DigestUpdate(md2, ascii_salt, salt_len)) |
| goto err; |
| } |
| if (i % 7) { |
| if (!EVP_DigestUpdate(md2, passwd, passwd_len)) |
| goto err; |
| } |
| if (!EVP_DigestUpdate(md2, |
| (i & 1) ? buf : (const unsigned char *)passwd, |
| (i & 1) ? sizeof(buf) : passwd_len)) |
| goto err; |
| if (!EVP_DigestFinal_ex(md2, buf, NULL)) |
| goto err; |
| } |
| EVP_MD_CTX_free(md2); |
| EVP_MD_CTX_free(md); |
| md2 = NULL; |
| md = NULL; |
| |
| { |
| /* transform buf into output string */ |
| unsigned char buf_perm[sizeof(buf)]; |
| int dest, source; |
| char *output; |
| |
| /* silly output permutation */ |
| for (dest = 0, source = 0; dest < 14; |
| dest++, source = (source + 6) % 17) |
| buf_perm[dest] = buf[source]; |
| buf_perm[14] = buf[5]; |
| buf_perm[15] = buf[11]; |
| # ifndef PEDANTIC /* Unfortunately, this generates a "no |
| * effect" warning */ |
| assert(16 == sizeof(buf_perm)); |
| # endif |
| |
| output = salt_out + salt_len; |
| assert(output == out_buf + strlen(out_buf)); |
| |
| *output++ = ascii_dollar[0]; |
| |
| for (i = 0; i < 15; i += 3) { |
| *output++ = cov_2char[buf_perm[i + 2] & 0x3f]; |
| *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) | |
| (buf_perm[i + 2] >> 6)]; |
| *output++ = cov_2char[((buf_perm[i] & 3) << 4) | |
| (buf_perm[i + 1] >> 4)]; |
| *output++ = cov_2char[buf_perm[i] >> 2]; |
| } |
| assert(i == 15); |
| *output++ = cov_2char[buf_perm[i] & 0x3f]; |
| *output++ = cov_2char[buf_perm[i] >> 6]; |
| *output = 0; |
| assert(strlen(out_buf) < sizeof(out_buf)); |
| #ifdef CHARSET_EBCDIC |
| ascii2ebcdic(out_buf, out_buf, strlen(out_buf)); |
| #endif |
| } |
| |
| return out_buf; |
| |
| err: |
| OPENSSL_free(ascii_passwd); |
| EVP_MD_CTX_free(md2); |
| EVP_MD_CTX_free(md); |
| return NULL; |
| } |
| |
| /* |
| * SHA based password algorithm, describe by Ulrich Drepper here: |
| * https://www.akkadia.org/drepper/SHA-crypt.txt |
| * (note that it's in the public domain) |
| */ |
| static char *shacrypt(const char *passwd, const char *magic, const char *salt) |
| { |
| /* Prefix for optional rounds specification. */ |
| static const char rounds_prefix[] = "rounds="; |
| /* Maximum salt string length. */ |
| # define SALT_LEN_MAX 16 |
| /* Default number of rounds if not explicitly specified. */ |
| # define ROUNDS_DEFAULT 5000 |
| /* Minimum number of rounds. */ |
| # define ROUNDS_MIN 1000 |
| /* Maximum number of rounds. */ |
| # define ROUNDS_MAX 999999999 |
| |
| /* "$6$rounds=<N>$......salt......$...shahash(up to 86 chars)...\0" */ |
| static char out_buf[3 + 17 + 17 + 86 + 1]; |
| unsigned char buf[SHA512_DIGEST_LENGTH]; |
| unsigned char temp_buf[SHA512_DIGEST_LENGTH]; |
| size_t buf_size = 0; |
| char ascii_magic[2]; |
| char ascii_salt[17]; /* Max 16 chars plus '\0' */ |
| char *ascii_passwd = NULL; |
| size_t n; |
| EVP_MD_CTX *md = NULL, *md2 = NULL; |
| const EVP_MD *sha = NULL; |
| size_t passwd_len, salt_len, magic_len; |
| unsigned int rounds = ROUNDS_DEFAULT; /* Default */ |
| char rounds_custom = 0; |
| char *p_bytes = NULL; |
| char *s_bytes = NULL; |
| char *cp = NULL; |
| |
| passwd_len = strlen(passwd); |
| magic_len = strlen(magic); |
| |
| /* assert it's "5" or "6" */ |
| if (magic_len != 1) |
| return NULL; |
| |
| switch (magic[0]) { |
| case '5': |
| sha = EVP_sha256(); |
| buf_size = 32; |
| break; |
| case '6': |
| sha = EVP_sha512(); |
| buf_size = 64; |
| break; |
| default: |
| return NULL; |
| } |
| |
| if (strncmp(salt, rounds_prefix, sizeof(rounds_prefix) - 1) == 0) { |
| const char *num = salt + sizeof(rounds_prefix) - 1; |
| char *endp; |
| unsigned long int srounds = strtoul (num, &endp, 10); |
| if (*endp == '$') { |
| salt = endp + 1; |
| if (srounds > ROUNDS_MAX) |
| rounds = ROUNDS_MAX; |
| else if (srounds < ROUNDS_MIN) |
| rounds = ROUNDS_MIN; |
| else |
| rounds = (unsigned int)srounds; |
| rounds_custom = 1; |
| } else { |
| return NULL; |
| } |
| } |
| |
| OPENSSL_strlcpy(ascii_magic, magic, sizeof(ascii_magic)); |
| #ifdef CHARSET_EBCDIC |
| if ((magic[0] & 0x80) != 0) /* High bit is 1 in EBCDIC alnums */ |
| ebcdic2ascii(ascii_magic, ascii_magic, magic_len); |
| #endif |
| |
| /* The salt gets truncated to 16 chars */ |
| OPENSSL_strlcpy(ascii_salt, salt, sizeof(ascii_salt)); |
| salt_len = strlen(ascii_salt); |
| #ifdef CHARSET_EBCDIC |
| ebcdic2ascii(ascii_salt, ascii_salt, salt_len); |
| #endif |
| |
| #ifdef CHARSET_EBCDIC |
| ascii_passwd = OPENSSL_strdup(passwd); |
| if (ascii_passwd == NULL) |
| return NULL; |
| ebcdic2ascii(ascii_passwd, ascii_passwd, passwd_len); |
| passwd = ascii_passwd; |
| #endif |
| |
| out_buf[0] = 0; |
| OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
| OPENSSL_strlcat(out_buf, ascii_magic, sizeof(out_buf)); |
| OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
| if (rounds_custom) { |
| char tmp_buf[80]; /* "rounds=999999999" */ |
| sprintf(tmp_buf, "rounds=%u", rounds); |
| #ifdef CHARSET_EBCDIC |
| /* In case we're really on a ASCII based platform and just pretend */ |
| if (tmp_buf[0] != 0x72) /* ASCII 'r' */ |
| ebcdic2ascii(tmp_buf, tmp_buf, strlen(tmp_buf)); |
| #endif |
| OPENSSL_strlcat(out_buf, tmp_buf, sizeof(out_buf)); |
| OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
| } |
| OPENSSL_strlcat(out_buf, ascii_salt, sizeof(out_buf)); |
| |
| /* assert "$5$rounds=999999999$......salt......" */ |
| if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len) |
| goto err; |
| |
| md = EVP_MD_CTX_new(); |
| if (md == NULL |
| || !EVP_DigestInit_ex(md, sha, NULL) |
| || !EVP_DigestUpdate(md, passwd, passwd_len) |
| || !EVP_DigestUpdate(md, ascii_salt, salt_len)) |
| goto err; |
| |
| md2 = EVP_MD_CTX_new(); |
| if (md2 == NULL |
| || !EVP_DigestInit_ex(md2, sha, NULL) |
| || !EVP_DigestUpdate(md2, passwd, passwd_len) |
| || !EVP_DigestUpdate(md2, ascii_salt, salt_len) |
| || !EVP_DigestUpdate(md2, passwd, passwd_len) |
| || !EVP_DigestFinal_ex(md2, buf, NULL)) |
| goto err; |
| |
| for (n = passwd_len; n > buf_size; n -= buf_size) { |
| if (!EVP_DigestUpdate(md, buf, buf_size)) |
| goto err; |
| } |
| if (!EVP_DigestUpdate(md, buf, n)) |
| goto err; |
| |
| n = passwd_len; |
| while (n) { |
| if (!EVP_DigestUpdate(md, |
| (n & 1) ? buf : (const unsigned char *)passwd, |
| (n & 1) ? buf_size : passwd_len)) |
| goto err; |
| n >>= 1; |
| } |
| if (!EVP_DigestFinal_ex(md, buf, NULL)) |
| goto err; |
| |
| /* P sequence */ |
| if (!EVP_DigestInit_ex(md2, sha, NULL)) |
| goto err; |
| |
| for (n = passwd_len; n > 0; n--) |
| if (!EVP_DigestUpdate(md2, passwd, passwd_len)) |
| goto err; |
| |
| if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) |
| goto err; |
| |
| if ((p_bytes = OPENSSL_zalloc(passwd_len)) == NULL) |
| goto err; |
| for (cp = p_bytes, n = passwd_len; n > buf_size; n -= buf_size, cp += buf_size) |
| memcpy(cp, temp_buf, buf_size); |
| memcpy(cp, temp_buf, n); |
| |
| /* S sequence */ |
| if (!EVP_DigestInit_ex(md2, sha, NULL)) |
| goto err; |
| |
| for (n = 16 + buf[0]; n > 0; n--) |
| if (!EVP_DigestUpdate(md2, ascii_salt, salt_len)) |
| goto err; |
| |
| if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) |
| goto err; |
| |
| if ((s_bytes = OPENSSL_zalloc(salt_len)) == NULL) |
| goto err; |
| for (cp = s_bytes, n = salt_len; n > buf_size; n -= buf_size, cp += buf_size) |
| memcpy(cp, temp_buf, buf_size); |
| memcpy(cp, temp_buf, n); |
| |
| for (n = 0; n < rounds; n++) { |
| if (!EVP_DigestInit_ex(md2, sha, NULL)) |
| goto err; |
| if (!EVP_DigestUpdate(md2, |
| (n & 1) ? (const unsigned char *)p_bytes : buf, |
| (n & 1) ? passwd_len : buf_size)) |
| goto err; |
| if (n % 3) { |
| if (!EVP_DigestUpdate(md2, s_bytes, salt_len)) |
| goto err; |
| } |
| if (n % 7) { |
| if (!EVP_DigestUpdate(md2, p_bytes, passwd_len)) |
| goto err; |
| } |
| if (!EVP_DigestUpdate(md2, |
| (n & 1) ? buf : (const unsigned char *)p_bytes, |
| (n & 1) ? buf_size : passwd_len)) |
| goto err; |
| if (!EVP_DigestFinal_ex(md2, buf, NULL)) |
| goto err; |
| } |
| EVP_MD_CTX_free(md2); |
| EVP_MD_CTX_free(md); |
| md2 = NULL; |
| md = NULL; |
| OPENSSL_free(p_bytes); |
| OPENSSL_free(s_bytes); |
| p_bytes = NULL; |
| s_bytes = NULL; |
| |
| cp = out_buf + strlen(out_buf); |
| *cp++ = ascii_dollar[0]; |
| |
| # define b64_from_24bit(B2, B1, B0, N) \ |
| do { \ |
| unsigned int w = ((B2) << 16) | ((B1) << 8) | (B0); \ |
| int i = (N); \ |
| while (i-- > 0) \ |
| { \ |
| *cp++ = cov_2char[w & 0x3f]; \ |
| w >>= 6; \ |
| } \ |
| } while (0) |
| |
| switch (magic[0]) { |
| case '5': |
| b64_from_24bit (buf[0], buf[10], buf[20], 4); |
| b64_from_24bit (buf[21], buf[1], buf[11], 4); |
| b64_from_24bit (buf[12], buf[22], buf[2], 4); |
| b64_from_24bit (buf[3], buf[13], buf[23], 4); |
| b64_from_24bit (buf[24], buf[4], buf[14], 4); |
| b64_from_24bit (buf[15], buf[25], buf[5], 4); |
| b64_from_24bit (buf[6], buf[16], buf[26], 4); |
| b64_from_24bit (buf[27], buf[7], buf[17], 4); |
| b64_from_24bit (buf[18], buf[28], buf[8], 4); |
| b64_from_24bit (buf[9], buf[19], buf[29], 4); |
| b64_from_24bit (0, buf[31], buf[30], 3); |
| break; |
| case '6': |
| b64_from_24bit (buf[0], buf[21], buf[42], 4); |
| b64_from_24bit (buf[22], buf[43], buf[1], 4); |
| b64_from_24bit (buf[44], buf[2], buf[23], 4); |
| b64_from_24bit (buf[3], buf[24], buf[45], 4); |
| b64_from_24bit (buf[25], buf[46], buf[4], 4); |
| b64_from_24bit (buf[47], buf[5], buf[26], 4); |
| b64_from_24bit (buf[6], buf[27], buf[48], 4); |
| b64_from_24bit (buf[28], buf[49], buf[7], 4); |
| b64_from_24bit (buf[50], buf[8], buf[29], 4); |
| b64_from_24bit (buf[9], buf[30], buf[51], 4); |
| b64_from_24bit (buf[31], buf[52], buf[10], 4); |
| b64_from_24bit (buf[53], buf[11], buf[32], 4); |
| b64_from_24bit (buf[12], buf[33], buf[54], 4); |
| b64_from_24bit (buf[34], buf[55], buf[13], 4); |
| b64_from_24bit (buf[56], buf[14], buf[35], 4); |
| b64_from_24bit (buf[15], buf[36], buf[57], 4); |
| b64_from_24bit (buf[37], buf[58], buf[16], 4); |
| b64_from_24bit (buf[59], buf[17], buf[38], 4); |
| b64_from_24bit (buf[18], buf[39], buf[60], 4); |
| b64_from_24bit (buf[40], buf[61], buf[19], 4); |
| b64_from_24bit (buf[62], buf[20], buf[41], 4); |
| b64_from_24bit (0, 0, buf[63], 2); |
| break; |
| default: |
| goto err; |
| } |
| *cp = '\0'; |
| #ifdef CHARSET_EBCDIC |
| ascii2ebcdic(out_buf, out_buf, strlen(out_buf)); |
| #endif |
| |
| return out_buf; |
| |
| err: |
| EVP_MD_CTX_free(md2); |
| EVP_MD_CTX_free(md); |
| OPENSSL_free(p_bytes); |
| OPENSSL_free(s_bytes); |
| OPENSSL_free(ascii_passwd); |
| return NULL; |
| } |
| |
| static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
| char *passwd, BIO *out, int quiet, int table, |
| int reverse, size_t pw_maxlen, passwd_modes mode) |
| { |
| char *hash = NULL; |
| |
| assert(salt_p != NULL); |
| assert(salt_malloc_p != NULL); |
| |
| /* first make sure we have a salt */ |
| if (!passed_salt) { |
| size_t saltlen = 0; |
| size_t i; |
| |
| if (mode == passwd_md5 || mode == passwd_apr1 || mode == passwd_aixmd5) |
| saltlen = 8; |
| |
| if (mode == passwd_sha256 || mode == passwd_sha512) |
| saltlen = 16; |
| |
| assert(saltlen != 0); |
| |
| if (*salt_malloc_p == NULL) |
| *salt_p = *salt_malloc_p = app_malloc(saltlen + 1, "salt buffer"); |
| if (RAND_bytes((unsigned char *)*salt_p, saltlen) <= 0) |
| goto end; |
| |
| for (i = 0; i < saltlen; i++) |
| (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ |
| (*salt_p)[i] = 0; |
| # ifdef CHARSET_EBCDIC |
| /* The password encryption function will convert back to ASCII */ |
| ascii2ebcdic(*salt_p, *salt_p, saltlen); |
| # endif |
| } |
| |
| assert(*salt_p != NULL); |
| |
| /* truncate password if necessary */ |
| if ((strlen(passwd) > pw_maxlen)) { |
| if (!quiet) |
| /* |
| * XXX: really we should know how to print a size_t, not cast it |
| */ |
| BIO_printf(bio_err, |
| "Warning: truncating password to %u characters\n", |
| (unsigned)pw_maxlen); |
| passwd[pw_maxlen] = 0; |
| } |
| assert(strlen(passwd) <= pw_maxlen); |
| |
| /* now compute password hash */ |
| if (mode == passwd_md5 || mode == passwd_apr1) |
| hash = md5crypt(passwd, (mode == passwd_md5 ? "1" : "apr1"), *salt_p); |
| if (mode == passwd_aixmd5) |
| hash = md5crypt(passwd, "", *salt_p); |
| if (mode == passwd_sha256 || mode == passwd_sha512) |
| hash = shacrypt(passwd, (mode == passwd_sha256 ? "5" : "6"), *salt_p); |
| assert(hash != NULL); |
| |
| if (table && !reverse) |
| BIO_printf(out, "%s\t%s\n", passwd, hash); |
| else if (table && reverse) |
| BIO_printf(out, "%s\t%s\n", hash, passwd); |
| else |
| BIO_printf(out, "%s\n", hash); |
| return 1; |
| |
| end: |
| return 0; |
| } |
