mirror of
https://github.com/openssl/openssl.git
synced 2024-11-24 02:23:51 +08:00
Add SHA256 and SHA512 based output for 'openssl passwd'
RT#4674 issue 2 Reviewed-by: Rich Salz <rsalz@openssl.org>
This commit is contained in:
Richard Levitte
parent
7d959c358a
commit
4e57a12ba7
320
apps/passwd.c
320
apps/passwd.c
@ -11,7 +11,11 @@
|
||||
# define NO_MD5CRYPT_1
|
||||
#endif
|
||||
|
||||
#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1)
|
||||
#if defined OPENSSL_NO_SHA || defined CHARSET_EBCDIC
|
||||
# define NO_SHACRYPT
|
||||
#endif
|
||||
|
||||
#if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1) || !defined(NO_SHACRYPT)
|
||||
|
||||
# include <string.h>
|
||||
|
||||
@ -27,6 +31,9 @@
|
||||
# ifndef NO_MD5CRYPT_1
|
||||
# include <openssl/md5.h>
|
||||
# endif
|
||||
# ifndef NO_SHACRYPT
|
||||
# include <openssl/sha.h>
|
||||
# endif
|
||||
|
||||
static unsigned const char cov_2char[64] = {
|
||||
/* from crypto/des/fcrypt.c */
|
||||
@ -43,13 +50,13 @@ static unsigned const char cov_2char[64] = {
|
||||
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, int usecrypt, int use1,
|
||||
int useapr1);
|
||||
int useapr1, int use5, int use6);
|
||||
|
||||
typedef enum OPTION_choice {
|
||||
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
|
||||
OPT_IN,
|
||||
OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
|
||||
OPT_1, OPT_CRYPT, OPT_SALT, OPT_STDIN
|
||||
OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_SALT, OPT_STDIN
|
||||
} OPTION_CHOICE;
|
||||
|
||||
OPTIONS passwd_options[] = {
|
||||
@ -62,6 +69,10 @@ OPTIONS passwd_options[] = {
|
||||
{"reverse", OPT_REVERSE, '-', "Switch table columns"},
|
||||
{"salt", OPT_SALT, 's', "Use provided salt"},
|
||||
{"stdin", OPT_STDIN, '-', "Read passwords from stdin"},
|
||||
# ifndef NO_SHACRYPT
|
||||
{"6", OPT_6, '-', "SHA512-based password algorithm"},
|
||||
{"5", OPT_5, '-', "SHA256-based password algorithm"},
|
||||
# endif
|
||||
# ifndef NO_MD5CRYPT_1
|
||||
{"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"},
|
||||
{"1", OPT_1, '-', "MD5-based password algorithm"},
|
||||
@ -83,7 +94,7 @@ int passwd_main(int argc, char **argv)
|
||||
int in_noverify = 0;
|
||||
#endif
|
||||
int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
|
||||
int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0;
|
||||
int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0, use5 = 0, use6 = 0;
|
||||
size_t passwd_malloc_size = 0, pw_maxlen = 256;
|
||||
|
||||
prog = opt_init(argc, argv, passwd_options);
|
||||
@ -118,6 +129,12 @@ int passwd_main(int argc, char **argv)
|
||||
case OPT_REVERSE:
|
||||
reverse = 1;
|
||||
break;
|
||||
case OPT_5:
|
||||
use5 = 1;
|
||||
break;
|
||||
case OPT_6:
|
||||
use6 = 1;
|
||||
break;
|
||||
case OPT_1:
|
||||
use1 = 1;
|
||||
break;
|
||||
@ -149,11 +166,11 @@ int passwd_main(int argc, char **argv)
|
||||
passwds = argv;
|
||||
}
|
||||
|
||||
if (!usecrypt && !use1 && !useapr1) {
|
||||
if (!usecrypt && !use5 && !use6 && !use1 && !useapr1) {
|
||||
/* use default */
|
||||
usecrypt = 1;
|
||||
}
|
||||
if (usecrypt + use1 + useapr1 > 1) {
|
||||
if (usecrypt + use5 + use6 + use1 + useapr1 > 1) {
|
||||
/* conflict */
|
||||
goto opthelp;
|
||||
}
|
||||
@ -166,6 +183,10 @@ int passwd_main(int argc, char **argv)
|
||||
if (use1 || useapr1)
|
||||
goto opthelp;
|
||||
# endif
|
||||
# ifdef NO_SHACRYPT
|
||||
if (use5 || use6)
|
||||
goto opthelp;
|
||||
# endif
|
||||
|
||||
if (infile != NULL && in_stdin) {
|
||||
BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog);
|
||||
@ -226,7 +247,7 @@ int passwd_main(int argc, char **argv)
|
||||
passwd = *passwds++;
|
||||
if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out,
|
||||
quiet, table, reverse, pw_maxlen, usecrypt, use1,
|
||||
useapr1))
|
||||
useapr1, use5, use6))
|
||||
goto end;
|
||||
}
|
||||
while (*passwds != NULL);
|
||||
@ -252,7 +273,8 @@ int passwd_main(int argc, char **argv)
|
||||
|
||||
if (!do_passwd
|
||||
(passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet,
|
||||
table, reverse, pw_maxlen, usecrypt, use1, useapr1))
|
||||
table, reverse, pw_maxlen, usecrypt, use1, useapr1,
|
||||
use5, use6))
|
||||
goto end;
|
||||
}
|
||||
done = (r <= 0);
|
||||
@ -419,10 +441,270 @@ static char *md5crypt(const char *passwd, const char *magic, const char *salt)
|
||||
}
|
||||
# endif
|
||||
|
||||
# ifndef NO_SHACRYPT
|
||||
/*
|
||||
* 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 salt_copy[17]; /* Max 16 chars plus '\0' */
|
||||
size_t n;
|
||||
EVP_MD_CTX *md = NULL, *md2 = NULL;
|
||||
const EVP_MD *sha = NULL;
|
||||
size_t passwd_len, salt_len, magic_len;
|
||||
size_t rounds = 5000; /* 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 == '$') {
|
||||
salt = endp + 1;
|
||||
if (srounds > ROUNDS_MAX)
|
||||
rounds = ROUNDS_MAX;
|
||||
else if (srounds < ROUNDS_MIN)
|
||||
rounds = ROUNDS_MIN;
|
||||
else
|
||||
rounds = srounds;
|
||||
rounds_custom = 1;
|
||||
} else {
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* The salt gets truncated to 16 chars */
|
||||
OPENSSL_strlcpy(salt_copy, salt, sizeof salt_copy);
|
||||
salt_len = strlen(salt_copy);
|
||||
|
||||
out_buf[0] = 0;
|
||||
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
|
||||
OPENSSL_strlcat(out_buf, magic, sizeof out_buf);
|
||||
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
|
||||
if (rounds_custom) {
|
||||
char tmp_buf[7 + 9 + 1]; /* "rounds=999999999" */
|
||||
sprintf(tmp_buf, "rounds=%lu", rounds);
|
||||
OPENSSL_strlcat(out_buf, tmp_buf, sizeof out_buf);
|
||||
OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
|
||||
}
|
||||
OPENSSL_strlcat(out_buf, salt_copy, sizeof out_buf);
|
||||
|
||||
/* assert "$5$rounds=999999999$......salt......" */
|
||||
if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len )
|
||||
return NULL;
|
||||
|
||||
md = EVP_MD_CTX_new();
|
||||
if (md == NULL
|
||||
|| !EVP_DigestInit_ex(md, sha, NULL)
|
||||
|| !EVP_DigestUpdate(md, passwd, passwd_len)
|
||||
|| !EVP_DigestUpdate(md, salt_copy, 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, salt_copy, 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 : (unsigned const char *)passwd,
|
||||
(n & 1) ? buf_size : passwd_len))
|
||||
goto err;
|
||||
n >>= 1;
|
||||
}
|
||||
if (!EVP_DigestFinal_ex(md, buf, NULL))
|
||||
return NULL;
|
||||
|
||||
/* 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))
|
||||
return NULL;
|
||||
|
||||
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, salt, salt_len))
|
||||
goto err;
|
||||
|
||||
if (!EVP_DigestFinal_ex(md2, temp_buf, NULL))
|
||||
return NULL;
|
||||
|
||||
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) ? (unsigned const 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 : (unsigned const 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++ = '$';
|
||||
|
||||
#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) {
|
||||
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';
|
||||
|
||||
return out_buf;
|
||||
|
||||
err:
|
||||
EVP_MD_CTX_free(md2);
|
||||
EVP_MD_CTX_free(md);
|
||||
OPENSSL_free(p_bytes);
|
||||
OPENSSL_free(s_bytes);
|
||||
return NULL;
|
||||
}
|
||||
# endif
|
||||
|
||||
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, int usecrypt, int use1,
|
||||
int useapr1)
|
||||
int useapr1, int use5, int use6)
|
||||
{
|
||||
char *hash = NULL;
|
||||
|
||||
@ -463,6 +745,22 @@ static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
|
||||
(*salt_p)[8] = 0;
|
||||
}
|
||||
# endif /* !NO_MD5CRYPT_1 */
|
||||
|
||||
# ifndef NO_SHACRYPT
|
||||
if (use5 || use6) {
|
||||
int i;
|
||||
|
||||
if (*salt_malloc_p == NULL) {
|
||||
*salt_p = *salt_malloc_p = app_malloc(17, "salt buffer");
|
||||
}
|
||||
if (RAND_bytes((unsigned char *)*salt_p, 16) <= 0)
|
||||
goto end;
|
||||
|
||||
for (i = 0; i < 16; i++)
|
||||
(*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
|
||||
(*salt_p)[16] = 0;
|
||||
}
|
||||
# endif /* !NO_SHACRYPT */
|
||||
}
|
||||
|
||||
assert(*salt_p != NULL);
|
||||
@ -488,6 +786,10 @@ static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
|
||||
# ifndef NO_MD5CRYPT_1
|
||||
if (use1 || useapr1)
|
||||
hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
|
||||
# endif
|
||||
# ifndef NO_SHACRYPT
|
||||
if (use5 || use6)
|
||||
hash = shacrypt(passwd, (use5 ? "5" : "6"), *salt_p);
|
||||
# endif
|
||||
assert(hash != NULL);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user