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-rw-r--r--crypto/srp/srp_vfy.c1032
1 files changed, 505 insertions, 527 deletions
diff --git a/crypto/srp/srp_vfy.c b/crypto/srp/srp_vfy.c
index fdca19ff7c69..701b5cd01156 100644
--- a/crypto/srp/srp_vfy.c
+++ b/crypto/srp/srp_vfy.c
@@ -1,7 +1,8 @@
/* crypto/srp/srp_vfy.c */
-/* Written by Christophe Renou (christophe.renou@edelweb.fr) with
- * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr)
- * for the EdelKey project and contributed to the OpenSSL project 2004.
+/*
+ * Written by Christophe Renou (christophe.renou@edelweb.fr) with the
+ * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the
+ * EdelKey project and contributed to the OpenSSL project 2004.
*/
/* ====================================================================
* Copyright (c) 2004 The OpenSSL Project. All rights reserved.
@@ -11,7 +12,7 @@
* are met:
*
* 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
+ * 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
@@ -57,605 +58,582 @@
*
*/
#ifndef OPENSSL_NO_SRP
-#include "cryptlib.h"
-#include "srp_lcl.h"
-#include <openssl/srp.h>
-#include <openssl/evp.h>
-#include <openssl/buffer.h>
-#include <openssl/rand.h>
-#include <openssl/txt_db.h>
+# include "cryptlib.h"
+# include "srp_lcl.h"
+# include <openssl/srp.h>
+# include <openssl/evp.h>
+# include <openssl/buffer.h>
+# include <openssl/rand.h>
+# include <openssl/txt_db.h>
-#define SRP_RANDOM_SALT_LEN 20
-#define MAX_LEN 2500
+# define SRP_RANDOM_SALT_LEN 20
+# define MAX_LEN 2500
static char b64table[] =
- "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./";
+ "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz./";
-/* the following two conversion routines have been inspired by code from Stanford */
+/*
+ * the following two conversion routines have been inspired by code from
+ * Stanford
+ */
/*
* Convert a base64 string into raw byte array representation.
*/
static int t_fromb64(unsigned char *a, const char *src)
- {
- char *loc;
- int i, j;
- int size;
-
- while(*src && (*src == ' ' || *src == '\t' || *src == '\n'))
- ++src;
- size = strlen(src);
- i = 0;
- while(i < size)
- {
- loc = strchr(b64table, src[i]);
- if(loc == (char *) 0) break;
- else a[i] = loc - b64table;
- ++i;
- }
- /* if nothing valid to process we have a zero length response */
- if (i == 0)
- return 0;
- size = i;
- i = size - 1;
- j = size;
- while(1)
- {
- a[j] = a[i];
- if(--i < 0) break;
- a[j] |= (a[i] & 3) << 6;
- --j;
- a[j] = (unsigned char) ((a[i] & 0x3c) >> 2);
- if(--i < 0) break;
- a[j] |= (a[i] & 0xf) << 4;
- --j;
- a[j] = (unsigned char) ((a[i] & 0x30) >> 4);
- if(--i < 0) break;
- a[j] |= (a[i] << 2);
-
- a[--j] = 0;
- if(--i < 0) break;
- }
- while(a[j] == 0 && j <= size) ++j;
- i = 0;
- while (j <= size) a[i++] = a[j++];
- return i;
- }
-
+{
+ char *loc;
+ int i, j;
+ int size;
+
+ while (*src && (*src == ' ' || *src == '\t' || *src == '\n'))
+ ++src;
+ size = strlen(src);
+ i = 0;
+ while (i < size) {
+ loc = strchr(b64table, src[i]);
+ if (loc == (char *)0)
+ break;
+ else
+ a[i] = loc - b64table;
+ ++i;
+ }
+ /* if nothing valid to process we have a zero length response */
+ if (i == 0)
+ return 0;
+ size = i;
+ i = size - 1;
+ j = size;
+ while (1) {
+ a[j] = a[i];
+ if (--i < 0)
+ break;
+ a[j] |= (a[i] & 3) << 6;
+ --j;
+ a[j] = (unsigned char)((a[i] & 0x3c) >> 2);
+ if (--i < 0)
+ break;
+ a[j] |= (a[i] & 0xf) << 4;
+ --j;
+ a[j] = (unsigned char)((a[i] & 0x30) >> 4);
+ if (--i < 0)
+ break;
+ a[j] |= (a[i] << 2);
+
+ a[--j] = 0;
+ if (--i < 0)
+ break;
+ }
+ while (a[j] == 0 && j <= size)
+ ++j;
+ i = 0;
+ while (j <= size)
+ a[i++] = a[j++];
+ return i;
+}
/*
* Convert a raw byte string into a null-terminated base64 ASCII string.
*/
static char *t_tob64(char *dst, const unsigned char *src, int size)
- {
- int c, pos = size % 3;
- unsigned char b0 = 0, b1 = 0, b2 = 0, notleading = 0;
- char *olddst = dst;
-
- switch(pos)
- {
- case 1:
- b2 = src[0];
- break;
- case 2:
- b1 = src[0];
- b2 = src[1];
- break;
- }
-
- while(1)
- {
- c = (b0 & 0xfc) >> 2;
- if(notleading || c != 0)
- {
- *dst++ = b64table[c];
- notleading = 1;
- }
- c = ((b0 & 3) << 4) | ((b1 & 0xf0) >> 4);
- if(notleading || c != 0)
- {
- *dst++ = b64table[c];
- notleading = 1;
- }
- c = ((b1 & 0xf) << 2) | ((b2 & 0xc0) >> 6);
- if(notleading || c != 0)
- {
- *dst++ = b64table[c];
- notleading = 1;
- }
- c = b2 & 0x3f;
- if(notleading || c != 0)
- {
- *dst++ = b64table[c];
- notleading = 1;
- }
- if(pos >= size) break;
- else
- {
- b0 = src[pos++];
- b1 = src[pos++];
- b2 = src[pos++];
- }
- }
-
- *dst++ = '\0';
- return olddst;
- }
+{
+ int c, pos = size % 3;
+ unsigned char b0 = 0, b1 = 0, b2 = 0, notleading = 0;
+ char *olddst = dst;
+
+ switch (pos) {
+ case 1:
+ b2 = src[0];
+ break;
+ case 2:
+ b1 = src[0];
+ b2 = src[1];
+ break;
+ }
+
+ while (1) {
+ c = (b0 & 0xfc) >> 2;
+ if (notleading || c != 0) {
+ *dst++ = b64table[c];
+ notleading = 1;
+ }
+ c = ((b0 & 3) << 4) | ((b1 & 0xf0) >> 4);
+ if (notleading || c != 0) {
+ *dst++ = b64table[c];
+ notleading = 1;
+ }
+ c = ((b1 & 0xf) << 2) | ((b2 & 0xc0) >> 6);
+ if (notleading || c != 0) {
+ *dst++ = b64table[c];
+ notleading = 1;
+ }
+ c = b2 & 0x3f;
+ if (notleading || c != 0) {
+ *dst++ = b64table[c];
+ notleading = 1;
+ }
+ if (pos >= size)
+ break;
+ else {
+ b0 = src[pos++];
+ b1 = src[pos++];
+ b2 = src[pos++];
+ }
+ }
+
+ *dst++ = '\0';
+ return olddst;
+}
static void SRP_user_pwd_free(SRP_user_pwd *user_pwd)
- {
- if (user_pwd == NULL)
- return;
- BN_free(user_pwd->s);
- BN_clear_free(user_pwd->v);
- OPENSSL_free(user_pwd->id);
- OPENSSL_free(user_pwd->info);
- OPENSSL_free(user_pwd);
- }
+{
+ if (user_pwd == NULL)
+ return;
+ BN_free(user_pwd->s);
+ BN_clear_free(user_pwd->v);
+ OPENSSL_free(user_pwd->id);
+ OPENSSL_free(user_pwd->info);
+ OPENSSL_free(user_pwd);
+}
static SRP_user_pwd *SRP_user_pwd_new()
- {
- SRP_user_pwd *ret = OPENSSL_malloc(sizeof(SRP_user_pwd));
- if (ret == NULL)
- return NULL;
- ret->N = NULL;
- ret->g = NULL;
- ret->s = NULL;
- ret->v = NULL;
- ret->id = NULL ;
- ret->info = NULL;
- return ret;
- }
+{
+ SRP_user_pwd *ret = OPENSSL_malloc(sizeof(SRP_user_pwd));
+ if (ret == NULL)
+ return NULL;
+ ret->N = NULL;
+ ret->g = NULL;
+ ret->s = NULL;
+ ret->v = NULL;
+ ret->id = NULL;
+ ret->info = NULL;
+ return ret;
+}
static void SRP_user_pwd_set_gN(SRP_user_pwd *vinfo, const BIGNUM *g,
- const BIGNUM *N)
- {
- vinfo->N = N;
- vinfo->g = g;
- }
+ const BIGNUM *N)
+{
+ vinfo->N = N;
+ vinfo->g = g;
+}
static int SRP_user_pwd_set_ids(SRP_user_pwd *vinfo, const char *id,
- const char *info)
- {
- if (id != NULL && NULL == (vinfo->id = BUF_strdup(id)))
- return 0;
- return (info == NULL || NULL != (vinfo->info = BUF_strdup(info))) ;
- }
+ const char *info)
+{
+ if (id != NULL && NULL == (vinfo->id = BUF_strdup(id)))
+ return 0;
+ return (info == NULL || NULL != (vinfo->info = BUF_strdup(info)));
+}
static int SRP_user_pwd_set_sv(SRP_user_pwd *vinfo, const char *s,
- const char *v)
- {
- unsigned char tmp[MAX_LEN];
- int len;
-
- if (strlen(s) > MAX_LEN || strlen(v) > MAX_LEN)
- return 0;
- len = t_fromb64(tmp, v);
- if (NULL == (vinfo->v = BN_bin2bn(tmp, len, NULL)) )
- return 0;
- len = t_fromb64(tmp, s);
- return ((vinfo->s = BN_bin2bn(tmp, len, NULL)) != NULL) ;
- }
+ const char *v)
+{
+ unsigned char tmp[MAX_LEN];
+ int len;
+
+ if (strlen(s) > MAX_LEN || strlen(v) > MAX_LEN)
+ return 0;
+ len = t_fromb64(tmp, v);
+ if (NULL == (vinfo->v = BN_bin2bn(tmp, len, NULL)))
+ return 0;
+ len = t_fromb64(tmp, s);
+ return ((vinfo->s = BN_bin2bn(tmp, len, NULL)) != NULL);
+}
static int SRP_user_pwd_set_sv_BN(SRP_user_pwd *vinfo, BIGNUM *s, BIGNUM *v)
- {
- vinfo->v = v;
- vinfo->s = s;
- return (vinfo->s != NULL && vinfo->v != NULL) ;
- }
+{
+ vinfo->v = v;
+ vinfo->s = s;
+ return (vinfo->s != NULL && vinfo->v != NULL);
+}
SRP_VBASE *SRP_VBASE_new(char *seed_key)
- {
- SRP_VBASE *vb = (SRP_VBASE *) OPENSSL_malloc(sizeof(SRP_VBASE));
-
- if (vb == NULL)
- return NULL;
- if (!(vb->users_pwd = sk_SRP_user_pwd_new_null()) ||
- !(vb->gN_cache = sk_SRP_gN_cache_new_null()))
- {
- OPENSSL_free(vb);
- return NULL;
- }
- vb->default_g = NULL;
- vb->default_N = NULL;
- vb->seed_key = NULL;
- if ((seed_key != NULL) &&
- (vb->seed_key = BUF_strdup(seed_key)) == NULL)
- {
- sk_SRP_user_pwd_free(vb->users_pwd);
- sk_SRP_gN_cache_free(vb->gN_cache);
- OPENSSL_free(vb);
- return NULL;
- }
- return vb;
- }
-
+{
+ SRP_VBASE *vb = (SRP_VBASE *)OPENSSL_malloc(sizeof(SRP_VBASE));
+
+ if (vb == NULL)
+ return NULL;
+ if (!(vb->users_pwd = sk_SRP_user_pwd_new_null()) ||
+ !(vb->gN_cache = sk_SRP_gN_cache_new_null())) {
+ OPENSSL_free(vb);
+ return NULL;
+ }
+ vb->default_g = NULL;
+ vb->default_N = NULL;
+ vb->seed_key = NULL;
+ if ((seed_key != NULL) && (vb->seed_key = BUF_strdup(seed_key)) == NULL) {
+ sk_SRP_user_pwd_free(vb->users_pwd);
+ sk_SRP_gN_cache_free(vb->gN_cache);
+ OPENSSL_free(vb);
+ return NULL;
+ }
+ return vb;
+}
int SRP_VBASE_free(SRP_VBASE *vb)
- {
- sk_SRP_user_pwd_pop_free(vb->users_pwd,SRP_user_pwd_free);
- sk_SRP_gN_cache_free(vb->gN_cache);
- OPENSSL_free(vb->seed_key);
- OPENSSL_free(vb);
- return 0;
- }
-
+{
+ sk_SRP_user_pwd_pop_free(vb->users_pwd, SRP_user_pwd_free);
+ sk_SRP_gN_cache_free(vb->gN_cache);
+ OPENSSL_free(vb->seed_key);
+ OPENSSL_free(vb);
+ return 0;
+}
static SRP_gN_cache *SRP_gN_new_init(const char *ch)
- {
- unsigned char tmp[MAX_LEN];
- int len;
+{
+ unsigned char tmp[MAX_LEN];
+ int len;
- SRP_gN_cache *newgN = (SRP_gN_cache *)OPENSSL_malloc(sizeof(SRP_gN_cache));
- if (newgN == NULL)
- return NULL;
+ SRP_gN_cache *newgN =
+ (SRP_gN_cache *)OPENSSL_malloc(sizeof(SRP_gN_cache));
+ if (newgN == NULL)
+ return NULL;
- if ((newgN->b64_bn = BUF_strdup(ch)) == NULL)
- goto err;
+ if ((newgN->b64_bn = BUF_strdup(ch)) == NULL)
+ goto err;
- len = t_fromb64(tmp, ch);
- if ((newgN->bn = BN_bin2bn(tmp, len, NULL)))
- return newgN;
-
- OPENSSL_free(newgN->b64_bn);
-err:
- OPENSSL_free(newgN);
- return NULL;
- }
+ len = t_fromb64(tmp, ch);
+ if ((newgN->bn = BN_bin2bn(tmp, len, NULL)))
+ return newgN;
+ OPENSSL_free(newgN->b64_bn);
+ err:
+ OPENSSL_free(newgN);
+ return NULL;
+}
static void SRP_gN_free(SRP_gN_cache *gN_cache)
- {
- if (gN_cache == NULL)
- return;
- OPENSSL_free(gN_cache->b64_bn);
- BN_free(gN_cache->bn);
- OPENSSL_free(gN_cache);
- }
+{
+ if (gN_cache == NULL)
+ return;
+ OPENSSL_free(gN_cache->b64_bn);
+ BN_free(gN_cache->bn);
+ OPENSSL_free(gN_cache);
+}
static SRP_gN *SRP_get_gN_by_id(const char *id, STACK_OF(SRP_gN) *gN_tab)
- {
- int i;
-
- SRP_gN *gN;
- if (gN_tab != NULL)
- for(i = 0; i < sk_SRP_gN_num(gN_tab); i++)
- {
- gN = sk_SRP_gN_value(gN_tab, i);
- if (gN && (id == NULL || strcmp(gN->id,id)==0))
- return gN;
- }
-
- return SRP_get_default_gN(id);
- }
+{
+ int i;
+
+ SRP_gN *gN;
+ if (gN_tab != NULL)
+ for (i = 0; i < sk_SRP_gN_num(gN_tab); i++) {
+ gN = sk_SRP_gN_value(gN_tab, i);
+ if (gN && (id == NULL || strcmp(gN->id, id) == 0))
+ return gN;
+ }
+
+ return SRP_get_default_gN(id);
+}
static BIGNUM *SRP_gN_place_bn(STACK_OF(SRP_gN_cache) *gN_cache, char *ch)
- {
- int i;
- if (gN_cache == NULL)
- return NULL;
-
- /* search if we have already one... */
- for(i = 0; i < sk_SRP_gN_cache_num(gN_cache); i++)
- {
- SRP_gN_cache *cache = sk_SRP_gN_cache_value(gN_cache, i);
- if (strcmp(cache->b64_bn,ch)==0)
- return cache->bn;
- }
- { /* it is the first time that we find it */
- SRP_gN_cache *newgN = SRP_gN_new_init(ch);
- if (newgN)
- {
- if (sk_SRP_gN_cache_insert(gN_cache,newgN,0)>0)
- return newgN->bn;
- SRP_gN_free(newgN);
- }
- }
- return NULL;
- }
-
-/* this function parses verifier file. Format is:
+{
+ int i;
+ if (gN_cache == NULL)
+ return NULL;
+
+ /* search if we have already one... */
+ for (i = 0; i < sk_SRP_gN_cache_num(gN_cache); i++) {
+ SRP_gN_cache *cache = sk_SRP_gN_cache_value(gN_cache, i);
+ if (strcmp(cache->b64_bn, ch) == 0)
+ return cache->bn;
+ }
+ { /* it is the first time that we find it */
+ SRP_gN_cache *newgN = SRP_gN_new_init(ch);
+ if (newgN) {
+ if (sk_SRP_gN_cache_insert(gN_cache, newgN, 0) > 0)
+ return newgN->bn;
+ SRP_gN_free(newgN);
+ }
+ }
+ return NULL;
+}
+
+/*
+ * this function parses verifier file. Format is:
* string(index):base64(N):base64(g):0
* string(username):base64(v):base64(salt):int(index)
*/
-
int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file)
- {
- int error_code ;
- STACK_OF(SRP_gN) *SRP_gN_tab = sk_SRP_gN_new_null();
- char *last_index = NULL;
- int i;
- char **pp;
-
- SRP_gN *gN = NULL;
- SRP_user_pwd *user_pwd = NULL ;
-
- TXT_DB *tmpdb = NULL;
- BIO *in = BIO_new(BIO_s_file());
-
- error_code = SRP_ERR_OPEN_FILE;
-
- if (in == NULL || BIO_read_filename(in,verifier_file) <= 0)
- goto err;
-
- error_code = SRP_ERR_VBASE_INCOMPLETE_FILE;
-
- if ((tmpdb =TXT_DB_read(in,DB_NUMBER)) == NULL)
- goto err;
-
- error_code = SRP_ERR_MEMORY;
-
-
- if (vb->seed_key)
- {
- last_index = SRP_get_default_gN(NULL)->id;
- }
- for (i = 0; i < sk_OPENSSL_PSTRING_num(tmpdb->data); i++)
- {
- pp = sk_OPENSSL_PSTRING_value(tmpdb->data,i);
- if (pp[DB_srptype][0] == DB_SRP_INDEX)
- {
- /*we add this couple in the internal Stack */
-
- if ((gN = (SRP_gN *)OPENSSL_malloc(sizeof(SRP_gN))) == NULL)
- goto err;
-
- if (!(gN->id = BUF_strdup(pp[DB_srpid]))
- || !(gN->N = SRP_gN_place_bn(vb->gN_cache,pp[DB_srpverifier]))
- || !(gN->g = SRP_gN_place_bn(vb->gN_cache,pp[DB_srpsalt]))
- || sk_SRP_gN_insert(SRP_gN_tab,gN,0) == 0)
- goto err;
-
- gN = NULL;
-
- if (vb->seed_key != NULL)
- {
- last_index = pp[DB_srpid];
- }
- }
- else if (pp[DB_srptype][0] == DB_SRP_VALID)
- {
- /* it is a user .... */
- SRP_gN *lgN;
- if ((lgN = SRP_get_gN_by_id(pp[DB_srpgN],SRP_gN_tab))!=NULL)
- {
- error_code = SRP_ERR_MEMORY;
- if ((user_pwd = SRP_user_pwd_new()) == NULL)
- goto err;
-
- SRP_user_pwd_set_gN(user_pwd,lgN->g,lgN->N);
- if (!SRP_user_pwd_set_ids(user_pwd, pp[DB_srpid],pp[DB_srpinfo]))
- goto err;
-
- error_code = SRP_ERR_VBASE_BN_LIB;
- if (!SRP_user_pwd_set_sv(user_pwd, pp[DB_srpsalt],pp[DB_srpverifier]))
- goto err;
-
- if (sk_SRP_user_pwd_insert(vb->users_pwd, user_pwd, 0) == 0)
- goto err;
- user_pwd = NULL; /* abandon responsability */
- }
- }
- }
-
- if (last_index != NULL)
- {
- /* this means that we want to simulate a default user */
-
- if (((gN = SRP_get_gN_by_id(last_index,SRP_gN_tab))==NULL))
- {
- error_code = SRP_ERR_VBASE_BN_LIB;
- goto err;
- }
- vb->default_g = gN->g ;
- vb->default_N = gN->N ;
- gN = NULL ;
- }
- error_code = SRP_NO_ERROR;
+{
+ int error_code;
+ STACK_OF(SRP_gN) *SRP_gN_tab = sk_SRP_gN_new_null();
+ char *last_index = NULL;
+ int i;
+ char **pp;
+
+ SRP_gN *gN = NULL;
+ SRP_user_pwd *user_pwd = NULL;
+
+ TXT_DB *tmpdb = NULL;
+ BIO *in = BIO_new(BIO_s_file());
+
+ error_code = SRP_ERR_OPEN_FILE;
+
+ if (in == NULL || BIO_read_filename(in, verifier_file) <= 0)
+ goto err;
+
+ error_code = SRP_ERR_VBASE_INCOMPLETE_FILE;
+
+ if ((tmpdb = TXT_DB_read(in, DB_NUMBER)) == NULL)
+ goto err;
+
+ error_code = SRP_ERR_MEMORY;
+
+ if (vb->seed_key) {
+ last_index = SRP_get_default_gN(NULL)->id;
+ }
+ for (i = 0; i < sk_OPENSSL_PSTRING_num(tmpdb->data); i++) {
+ pp = sk_OPENSSL_PSTRING_value(tmpdb->data, i);
+ if (pp[DB_srptype][0] == DB_SRP_INDEX) {
+ /*
+ * we add this couple in the internal Stack
+ */
+
+ if ((gN = (SRP_gN *) OPENSSL_malloc(sizeof(SRP_gN))) == NULL)
+ goto err;
+
+ if (!(gN->id = BUF_strdup(pp[DB_srpid]))
+ || !(gN->N =
+ SRP_gN_place_bn(vb->gN_cache, pp[DB_srpverifier]))
+ || !(gN->g = SRP_gN_place_bn(vb->gN_cache, pp[DB_srpsalt]))
+ || sk_SRP_gN_insert(SRP_gN_tab, gN, 0) == 0)
+ goto err;
+
+ gN = NULL;
+
+ if (vb->seed_key != NULL) {
+ last_index = pp[DB_srpid];
+ }
+ } else if (pp[DB_srptype][0] == DB_SRP_VALID) {
+ /* it is a user .... */
+ SRP_gN *lgN;
+ if ((lgN = SRP_get_gN_by_id(pp[DB_srpgN], SRP_gN_tab)) != NULL) {
+ error_code = SRP_ERR_MEMORY;
+ if ((user_pwd = SRP_user_pwd_new()) == NULL)
+ goto err;
+
+ SRP_user_pwd_set_gN(user_pwd, lgN->g, lgN->N);
+ if (!SRP_user_pwd_set_ids
+ (user_pwd, pp[DB_srpid], pp[DB_srpinfo]))
+ goto err;
+
+ error_code = SRP_ERR_VBASE_BN_LIB;
+ if (!SRP_user_pwd_set_sv
+ (user_pwd, pp[DB_srpsalt], pp[DB_srpverifier]))
+ goto err;
+
+ if (sk_SRP_user_pwd_insert(vb->users_pwd, user_pwd, 0) == 0)
+ goto err;
+ user_pwd = NULL; /* abandon responsability */
+ }
+ }
+ }
+
+ if (last_index != NULL) {
+ /* this means that we want to simulate a default user */
+
+ if (((gN = SRP_get_gN_by_id(last_index, SRP_gN_tab)) == NULL)) {
+ error_code = SRP_ERR_VBASE_BN_LIB;
+ goto err;
+ }
+ vb->default_g = gN->g;
+ vb->default_N = gN->N;
+ gN = NULL;
+ }
+ error_code = SRP_NO_ERROR;
err:
- /* there may be still some leaks to fix, if this fails, the application terminates most likely */
-
- if (gN != NULL)
- {
- OPENSSL_free(gN->id);
- OPENSSL_free(gN);
- }
+ /*
+ * there may be still some leaks to fix, if this fails, the application
+ * terminates most likely
+ */
- SRP_user_pwd_free(user_pwd);
+ if (gN != NULL) {
+ OPENSSL_free(gN->id);
+ OPENSSL_free(gN);
+ }
- if (tmpdb) TXT_DB_free(tmpdb);
- if (in) BIO_free_all(in);
+ SRP_user_pwd_free(user_pwd);
- sk_SRP_gN_free(SRP_gN_tab);
+ if (tmpdb)
+ TXT_DB_free(tmpdb);
+ if (in)
+ BIO_free_all(in);
- return error_code;
+ sk_SRP_gN_free(SRP_gN_tab);
- }
+ return error_code;
+}
SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username)
- {
- int i;
- SRP_user_pwd *user;
- unsigned char digv[SHA_DIGEST_LENGTH];
- unsigned char digs[SHA_DIGEST_LENGTH];
- EVP_MD_CTX ctxt;
-
- if (vb == NULL)
- return NULL;
- for(i = 0; i < sk_SRP_user_pwd_num(vb->users_pwd); i++)
- {
- user = sk_SRP_user_pwd_value(vb->users_pwd, i);
- if (strcmp(user->id,username)==0)
- return user;
- }
- if ((vb->seed_key == NULL) ||
- (vb->default_g == NULL) ||
- (vb->default_N == NULL))
- return NULL;
+{
+ int i;
+ SRP_user_pwd *user;
+ unsigned char digv[SHA_DIGEST_LENGTH];
+ unsigned char digs[SHA_DIGEST_LENGTH];
+ EVP_MD_CTX ctxt;
+
+ if (vb == NULL)
+ return NULL;
+ for (i = 0; i < sk_SRP_user_pwd_num(vb->users_pwd); i++) {
+ user = sk_SRP_user_pwd_value(vb->users_pwd, i);
+ if (strcmp(user->id, username) == 0)
+ return user;
+ }
+ if ((vb->seed_key == NULL) ||
+ (vb->default_g == NULL) || (vb->default_N == NULL))
+ return NULL;
/* if the user is unknown we set parameters as well if we have a seed_key */
- if ((user = SRP_user_pwd_new()) == NULL)
- return NULL;
-
- SRP_user_pwd_set_gN(user,vb->default_g,vb->default_N);
-
- if (!SRP_user_pwd_set_ids(user,username,NULL))
- goto err;
-
- RAND_pseudo_bytes(digv, SHA_DIGEST_LENGTH);
- EVP_MD_CTX_init(&ctxt);
- EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
- EVP_DigestUpdate(&ctxt, vb->seed_key, strlen(vb->seed_key));
- EVP_DigestUpdate(&ctxt, username, strlen(username));
- EVP_DigestFinal_ex(&ctxt, digs, NULL);
- EVP_MD_CTX_cleanup(&ctxt);
- if (SRP_user_pwd_set_sv_BN(user, BN_bin2bn(digs,SHA_DIGEST_LENGTH,NULL), BN_bin2bn(digv,SHA_DIGEST_LENGTH, NULL)))
- return user;
-
-err: SRP_user_pwd_free(user);
- return NULL;
- }
+ if ((user = SRP_user_pwd_new()) == NULL)
+ return NULL;
+ SRP_user_pwd_set_gN(user, vb->default_g, vb->default_N);
-/*
- create a verifier (*salt,*verifier,g and N are in base64)
-*/
-char *SRP_create_verifier(const char *user, const char *pass, char **salt,
- char **verifier, const char *N, const char *g)
- {
- int len;
- char * result=NULL;
- char *vf;
- BIGNUM *N_bn = NULL, *g_bn = NULL, *s = NULL, *v = NULL;
- unsigned char tmp[MAX_LEN];
- unsigned char tmp2[MAX_LEN];
- char * defgNid = NULL;
-
- if ((user == NULL)||
- (pass == NULL)||
- (salt == NULL)||
- (verifier == NULL))
- goto err;
-
- if (N)
- {
- if (!(len = t_fromb64(tmp, N))) goto err;
- N_bn = BN_bin2bn(tmp, len, NULL);
- if (!(len = t_fromb64(tmp, g))) goto err;
- g_bn = BN_bin2bn(tmp, len, NULL);
- defgNid = "*";
- }
- else
- {
- SRP_gN * gN = SRP_get_gN_by_id(g, NULL) ;
- if (gN == NULL)
- goto err;
- N_bn = gN->N;
- g_bn = gN->g;
- defgNid = gN->id;
- }
-
- if (*salt == NULL)
- {
- RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN);
-
- s = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL);
- }
- else
- {
- if (!(len = t_fromb64(tmp2, *salt)))
- goto err;
- s = BN_bin2bn(tmp2, len, NULL);
- }
-
-
- if(!SRP_create_verifier_BN(user, pass, &s, &v, N_bn, g_bn)) goto err;
-
- BN_bn2bin(v,tmp);
- if (((vf = OPENSSL_malloc(BN_num_bytes(v)*2)) == NULL))
- goto err;
- t_tob64(vf, tmp, BN_num_bytes(v));
-
- *verifier = vf;
- if (*salt == NULL)
- {
- char *tmp_salt;
-
- if ((tmp_salt = OPENSSL_malloc(SRP_RANDOM_SALT_LEN * 2)) == NULL)
- {
- OPENSSL_free(vf);
- goto err;
- }
- t_tob64(tmp_salt, tmp2, SRP_RANDOM_SALT_LEN);
- *salt = tmp_salt;
- }
-
- result=defgNid;
-
-err:
- if(N)
- {
- BN_free(N_bn);
- BN_free(g_bn);
- }
- return result;
- }
+ if (!SRP_user_pwd_set_ids(user, username, NULL))
+ goto err;
+
+ RAND_pseudo_bytes(digv, SHA_DIGEST_LENGTH);
+ EVP_MD_CTX_init(&ctxt);
+ EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
+ EVP_DigestUpdate(&ctxt, vb->seed_key, strlen(vb->seed_key));
+ EVP_DigestUpdate(&ctxt, username, strlen(username));
+ EVP_DigestFinal_ex(&ctxt, digs, NULL);
+ EVP_MD_CTX_cleanup(&ctxt);
+ if (SRP_user_pwd_set_sv_BN
+ (user, BN_bin2bn(digs, SHA_DIGEST_LENGTH, NULL),
+ BN_bin2bn(digv, SHA_DIGEST_LENGTH, NULL)))
+ return user;
+
+ err:SRP_user_pwd_free(user);
+ return NULL;
+}
/*
- create a verifier (*salt,*verifier,g and N are BIGNUMs)
-*/
-int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, BIGNUM **verifier, BIGNUM *N, BIGNUM *g)
- {
- int result=0;
- BIGNUM *x = NULL;
- BN_CTX *bn_ctx = BN_CTX_new();
- unsigned char tmp2[MAX_LEN];
+ * create a verifier (*salt,*verifier,g and N are in base64)
+ */
+char *SRP_create_verifier(const char *user, const char *pass, char **salt,
+ char **verifier, const char *N, const char *g)
+{
+ int len;
+ char *result = NULL;
+ char *vf;
+ BIGNUM *N_bn = NULL, *g_bn = NULL, *s = NULL, *v = NULL;
+ unsigned char tmp[MAX_LEN];
+ unsigned char tmp2[MAX_LEN];
+ char *defgNid = NULL;
+
+ if ((user == NULL) ||
+ (pass == NULL) || (salt == NULL) || (verifier == NULL))
+ goto err;
+
+ if (N) {
+ if (!(len = t_fromb64(tmp, N)))
+ goto err;
+ N_bn = BN_bin2bn(tmp, len, NULL);
+ if (!(len = t_fromb64(tmp, g)))
+ goto err;
+ g_bn = BN_bin2bn(tmp, len, NULL);
+ defgNid = "*";
+ } else {
+ SRP_gN *gN = SRP_get_gN_by_id(g, NULL);
+ if (gN == NULL)
+ goto err;
+ N_bn = gN->N;
+ g_bn = gN->g;
+ defgNid = gN->id;
+ }
+
+ if (*salt == NULL) {
+ RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN);
+
+ s = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL);
+ } else {
+ if (!(len = t_fromb64(tmp2, *salt)))
+ goto err;
+ s = BN_bin2bn(tmp2, len, NULL);
+ }
+
+ if (!SRP_create_verifier_BN(user, pass, &s, &v, N_bn, g_bn))
+ goto err;
+
+ BN_bn2bin(v, tmp);
+ if (((vf = OPENSSL_malloc(BN_num_bytes(v) * 2)) == NULL))
+ goto err;
+ t_tob64(vf, tmp, BN_num_bytes(v));
+
+ *verifier = vf;
+ if (*salt == NULL) {
+ char *tmp_salt;
+
+ if ((tmp_salt = OPENSSL_malloc(SRP_RANDOM_SALT_LEN * 2)) == NULL) {
+ OPENSSL_free(vf);
+ goto err;
+ }
+ t_tob64(tmp_salt, tmp2, SRP_RANDOM_SALT_LEN);
+ *salt = tmp_salt;
+ }
+
+ result = defgNid;
- if ((user == NULL)||
- (pass == NULL)||
- (salt == NULL)||
- (verifier == NULL)||
- (N == NULL)||
- (g == NULL)||
- (bn_ctx == NULL))
- goto err;
+ err:
+ if (N) {
+ BN_free(N_bn);
+ BN_free(g_bn);
+ }
+ return result;
+}
- srp_bn_print(N);
- srp_bn_print(g);
+/*
+ * create a verifier (*salt,*verifier,g and N are BIGNUMs)
+ */
+int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
+ BIGNUM **verifier, BIGNUM *N, BIGNUM *g)
+{
+ int result = 0;
+ BIGNUM *x = NULL;
+ BN_CTX *bn_ctx = BN_CTX_new();
+ unsigned char tmp2[MAX_LEN];
- if (*salt == NULL)
- {
- RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN);
+ if ((user == NULL) ||
+ (pass == NULL) ||
+ (salt == NULL) ||
+ (verifier == NULL) || (N == NULL) || (g == NULL) || (bn_ctx == NULL))
+ goto err;
- *salt = BN_bin2bn(tmp2,SRP_RANDOM_SALT_LEN,NULL);
- }
+ srp_bn_print(N);
+ srp_bn_print(g);
- x = SRP_Calc_x(*salt,user,pass);
+ if (*salt == NULL) {
+ RAND_pseudo_bytes(tmp2, SRP_RANDOM_SALT_LEN);
- *verifier = BN_new();
- if(*verifier == NULL) goto err;
+ *salt = BN_bin2bn(tmp2, SRP_RANDOM_SALT_LEN, NULL);
+ }
- if (!BN_mod_exp(*verifier,g,x,N,bn_ctx))
- {
- BN_clear_free(*verifier);
- goto err;
- }
+ x = SRP_Calc_x(*salt, user, pass);
- srp_bn_print(*verifier);
+ *verifier = BN_new();
+ if (*verifier == NULL)
+ goto err;
- result=1;
+ if (!BN_mod_exp(*verifier, g, x, N, bn_ctx)) {
+ BN_clear_free(*verifier);
+ goto err;
+ }
-err:
+ srp_bn_print(*verifier);
- BN_clear_free(x);
- BN_CTX_free(bn_ctx);
- return result;
- }
+ result = 1;
+ err:
+ BN_clear_free(x);
+ BN_CTX_free(bn_ctx);
+ return result;
+}
#endif