Merged origin/release (checked in because wanted to merge new stuff)

1 files changed, 179 insertions, 182 deletions

diff --git a/openssl/crypto/jpake/jpake.c b/openssl/crypto/jpake/jpake.c
index 8e4b633cc..8c38727e2 100644
--- a/openssl/crypto/jpake/jpake.c
+++ b/openssl/crypto/jpake/jpake.c
@@ -4,78 +4,77 @@
 #include <openssl/sha.h>
 #include <openssl/err.h>
 #include <memory.h>
+#include <string.h>
 
 /*
  * In the definition, (xa, xb, xc, xd) are Alice's (x1, x2, x3, x4) or
  * Bob's (x3, x4, x1, x2). If you see what I mean.
  */
 
-typedef struct
-    {
-    char *name;  /* Must be unique */
+typedef struct {
+    char *name;                 /* Must be unique */
     char *peer_name;
     BIGNUM *p;
     BIGNUM *g;
     BIGNUM *q;
-    BIGNUM *gxc; /* Alice's g^{x3} or Bob's g^{x1} */
-    BIGNUM *gxd; /* Alice's g^{x4} or Bob's g^{x2} */
-    } JPAKE_CTX_PUBLIC;
+    BIGNUM *gxc;                /* Alice's g^{x3} or Bob's g^{x1} */
+    BIGNUM *gxd;                /* Alice's g^{x4} or Bob's g^{x2} */
+} JPAKE_CTX_PUBLIC;
 
-struct JPAKE_CTX
-    {
+struct JPAKE_CTX {
     JPAKE_CTX_PUBLIC p;
-    BIGNUM *secret;   /* The shared secret */
+    BIGNUM *secret;             /* The shared secret */
     BN_CTX *ctx;
-    BIGNUM *xa;       /* Alice's x1 or Bob's x3 */
-    BIGNUM *xb;       /* Alice's x2 or Bob's x4 */
-    BIGNUM *key;      /* The calculated (shared) key */
-    };
+    BIGNUM *xa;                 /* Alice's x1 or Bob's x3 */
+    BIGNUM *xb;                 /* Alice's x2 or Bob's x4 */
+    BIGNUM *key;                /* The calculated (shared) key */
+};
 
 static void JPAKE_ZKP_init(JPAKE_ZKP *zkp)
-    {
+{
     zkp->gr = BN_new();
     zkp->b = BN_new();
-    }
+}
 
 static void JPAKE_ZKP_release(JPAKE_ZKP *zkp)
-    {
+{
     BN_free(zkp->b);
     BN_free(zkp->gr);
-    }
+}
 
 /* Two birds with one stone - make the global name as expected */
-#define JPAKE_STEP_PART_init	JPAKE_STEP2_init
-#define JPAKE_STEP_PART_release	JPAKE_STEP2_release
+#define JPAKE_STEP_PART_init    JPAKE_STEP2_init
+#define JPAKE_STEP_PART_release JPAKE_STEP2_release
 
 void JPAKE_STEP_PART_init(JPAKE_STEP_PART *p)
-    {
+{
     p->gx = BN_new();
     JPAKE_ZKP_init(&p->zkpx);
-    }
+}
 
 void JPAKE_STEP_PART_release(JPAKE_STEP_PART *p)
-    {
+{
     JPAKE_ZKP_release(&p->zkpx);
     BN_free(p->gx);
-    }
+}
 
 void JPAKE_STEP1_init(JPAKE_STEP1 *s1)
-    {
+{
     JPAKE_STEP_PART_init(&s1->p1);
     JPAKE_STEP_PART_init(&s1->p2);
-    }
+}
 
 void JPAKE_STEP1_release(JPAKE_STEP1 *s1)
-    {
+{
     JPAKE_STEP_PART_release(&s1->p2);
     JPAKE_STEP_PART_release(&s1->p1);
-    }
+}
 
 static void JPAKE_CTX_init(JPAKE_CTX *ctx, const char *name,
-			   const char *peer_name, const BIGNUM *p,
-			   const BIGNUM *g, const BIGNUM *q,
-			   const BIGNUM *secret)
-    {
+                           const char *peer_name, const BIGNUM *p,
+                           const BIGNUM *g, const BIGNUM *q,
+                           const BIGNUM *secret)
+{
     ctx->p.name = OPENSSL_strdup(name);
     ctx->p.peer_name = OPENSSL_strdup(peer_name);
     ctx->p.p = BN_dup(p);
@@ -90,10 +89,10 @@ static void JPAKE_CTX_init(JPAKE_CTX *ctx, const char *name,
     ctx->xb = BN_new();
     ctx->key = BN_new();
     ctx->ctx = BN_CTX_new();
-    }
-    
+}
+
 static void JPAKE_CTX_release(JPAKE_CTX *ctx)
-    {
+{
     BN_CTX_free(ctx->ctx);
     BN_clear_free(ctx->key);
     BN_clear_free(ctx->xb);
@@ -110,45 +109,45 @@ static void JPAKE_CTX_release(JPAKE_CTX *ctx)
     OPENSSL_free(ctx->p.name);
 
     memset(ctx, '\0', sizeof *ctx);
-    }
-    
+}
+
 JPAKE_CTX *JPAKE_CTX_new(const char *name, const char *peer_name,
-			 const BIGNUM *p, const BIGNUM *g, const BIGNUM *q,
-			 const BIGNUM *secret)
-    {
+                         const BIGNUM *p, const BIGNUM *g, const BIGNUM *q,
+                         const BIGNUM *secret)
+{
     JPAKE_CTX *ctx = OPENSSL_malloc(sizeof *ctx);
 
     JPAKE_CTX_init(ctx, name, peer_name, p, g, q, secret);
 
     return ctx;
-    }
+}
 
 void JPAKE_CTX_free(JPAKE_CTX *ctx)
-    {
+{
     JPAKE_CTX_release(ctx);
     OPENSSL_free(ctx);
-    }
+}
 
 static void hashlength(SHA_CTX *sha, size_t l)
-    {
+{
     unsigned char b[2];
 
     OPENSSL_assert(l <= 0xffff);
     b[0] = l >> 8;
-    b[1] = l&0xff;
+    b[1] = l & 0xff;
     SHA1_Update(sha, b, 2);
-    }
+}
 
 static void hashstring(SHA_CTX *sha, const char *string)
-    {
+{
     size_t l = strlen(string);
 
     hashlength(sha, l);
     SHA1_Update(sha, string, l);
-    }
+}
 
 static void hashbn(SHA_CTX *sha, const BIGNUM *bn)
-    {
+{
     size_t l = BN_num_bytes(bn);
     unsigned char *bin = OPENSSL_malloc(l);
 
@@ -156,19 +155,19 @@ static void hashbn(SHA_CTX *sha, const BIGNUM *bn)
     BN_bn2bin(bn, bin);
     SHA1_Update(sha, bin, l);
     OPENSSL_free(bin);
-    }
+}
 
 /* h=hash(g, g^r, g^x, name) */
 static void zkp_hash(BIGNUM *h, const BIGNUM *zkpg, const JPAKE_STEP_PART *p,
-		     const char *proof_name)
-    {
+                     const char *proof_name)
+{
     unsigned char md[SHA_DIGEST_LENGTH];
     SHA_CTX sha;
 
-   /*
-    * XXX: hash should not allow moving of the boundaries - Java code
-    * is flawed in this respect. Length encoding seems simplest.
-    */
+    /*
+     * XXX: hash should not allow moving of the boundaries - Java code
+     * is flawed in this respect. Length encoding seems simplest.
+     */
     SHA1_Init(&sha);
     hashbn(&sha, zkpg);
     OPENSSL_assert(!BN_is_zero(p->zkpx.gr));
@@ -177,43 +176,43 @@ static void zkp_hash(BIGNUM *h, const BIGNUM *zkpg, const JPAKE_STEP_PART *p,
     hashstring(&sha, proof_name);
     SHA1_Final(md, &sha);
     BN_bin2bn(md, SHA_DIGEST_LENGTH, h);
-    }
+}
 
 /*
  * Prove knowledge of x
  * Note that p->gx has already been calculated
  */
 static void generate_zkp(JPAKE_STEP_PART *p, const BIGNUM *x,
-			 const BIGNUM *zkpg, JPAKE_CTX *ctx)
-    {
+                         const BIGNUM *zkpg, JPAKE_CTX *ctx)
+{
     BIGNUM *r = BN_new();
     BIGNUM *h = BN_new();
     BIGNUM *t = BN_new();
 
-   /*
+   /*-
     * r in [0,q)
     * XXX: Java chooses r in [0, 2^160) - i.e. distribution not uniform
     */
     BN_rand_range(r, ctx->p.q);
-   /* g^r */
+    /* g^r */
     BN_mod_exp(p->zkpx.gr, zkpg, r, ctx->p.p, ctx->ctx);
 
-   /* h=hash... */
+    /* h=hash... */
     zkp_hash(h, zkpg, p, ctx->p.name);
 
-   /* b = r - x*h */
+    /* b = r - x*h */
     BN_mod_mul(t, x, h, ctx->p.q, ctx->ctx);
     BN_mod_sub(p->zkpx.b, r, t, ctx->p.q, ctx->ctx);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(t);
     BN_free(h);
     BN_free(r);
-    }
+}
 
 static int verify_zkp(const JPAKE_STEP_PART *p, const BIGNUM *zkpg,
-		      JPAKE_CTX *ctx)
-    {
+                      JPAKE_CTX *ctx)
+{
     BIGNUM *h = BN_new();
     BIGNUM *t1 = BN_new();
     BIGNUM *t2 = BN_new();
@@ -222,74 +221,74 @@ static int verify_zkp(const JPAKE_STEP_PART *p, const BIGNUM *zkpg,
 
     zkp_hash(h, zkpg, p, ctx->p.peer_name);
 
-   /* t1 = g^b */
+    /* t1 = g^b */
     BN_mod_exp(t1, zkpg, p->zkpx.b, ctx->p.p, ctx->ctx);
-   /* t2 = (g^x)^h = g^{hx} */
+    /* t2 = (g^x)^h = g^{hx} */
     BN_mod_exp(t2, p->gx, h, ctx->p.p, ctx->ctx);
-   /* t3 = t1 * t2 = g^{hx} * g^b = g^{hx+b} = g^r (allegedly) */
+    /* t3 = t1 * t2 = g^{hx} * g^b = g^{hx+b} = g^r (allegedly) */
     BN_mod_mul(t3, t1, t2, ctx->p.p, ctx->ctx);
 
-   /* verify t3 == g^r */
-    if(BN_cmp(t3, p->zkpx.gr) == 0)
-	ret = 1;
+    /* verify t3 == g^r */
+    if (BN_cmp(t3, p->zkpx.gr) == 0)
+        ret = 1;
     else
-	JPAKEerr(JPAKE_F_VERIFY_ZKP, JPAKE_R_ZKP_VERIFY_FAILED);
+        JPAKEerr(JPAKE_F_VERIFY_ZKP, JPAKE_R_ZKP_VERIFY_FAILED);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(t3);
     BN_free(t2);
     BN_free(t1);
     BN_free(h);
 
     return ret;
-    }    
+}
 
 static void generate_step_part(JPAKE_STEP_PART *p, const BIGNUM *x,
-			       const BIGNUM *g, JPAKE_CTX *ctx)
-    {
+                               const BIGNUM *g, JPAKE_CTX *ctx)
+{
     BN_mod_exp(p->gx, g, x, ctx->p.p, ctx->ctx);
     generate_zkp(p, x, g, ctx);
-    }
+}
 
 /* Generate each party's random numbers. xa is in [0, q), xb is in [1, q). */
 static void genrand(JPAKE_CTX *ctx)
-    {
+{
     BIGNUM *qm1;
 
-   /* xa in [0, q) */
+    /* xa in [0, q) */
     BN_rand_range(ctx->xa, ctx->p.q);
 
-   /* q-1 */
+    /* q-1 */
     qm1 = BN_new();
     BN_copy(qm1, ctx->p.q);
     BN_sub_word(qm1, 1);
 
-   /* ... and xb in [0, q-1) */
+    /* ... and xb in [0, q-1) */
     BN_rand_range(ctx->xb, qm1);
-   /* [1, q) */
+    /* [1, q) */
     BN_add_word(ctx->xb, 1);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(qm1);
-    }
+}
 
 int JPAKE_STEP1_generate(JPAKE_STEP1 *send, JPAKE_CTX *ctx)
-    {
+{
     genrand(ctx);
     generate_step_part(&send->p1, ctx->xa, ctx->p.g, ctx);
     generate_step_part(&send->p2, ctx->xb, ctx->p.g, ctx);
 
     return 1;
-    }
+}
 
 /* g^x is a legal value */
 static int is_legal(const BIGNUM *gx, const JPAKE_CTX *ctx)
-    {
+{
     BIGNUM *t;
     int res;
-    
-    if(BN_is_negative(gx) || BN_is_zero(gx) || BN_cmp(gx, ctx->p.p) >= 0)
-	return 0;
+
+    if (BN_is_negative(gx) || BN_is_zero(gx) || BN_cmp(gx, ctx->p.p) >= 0)
+        return 0;
 
     t = BN_new();
     BN_mod_exp(t, gx, ctx->p.q, ctx->p.p, ctx->ctx);
@@ -297,69 +296,65 @@ static int is_legal(const BIGNUM *gx, const JPAKE_CTX *ctx)
     BN_free(t);
 
     return res;
-    }
+}
 
 int JPAKE_STEP1_process(JPAKE_CTX *ctx, const JPAKE_STEP1 *received)
-    {
-    if(!is_legal(received->p1.gx, ctx))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_G_TO_THE_X3_IS_NOT_LEGAL);
-	return 0;
-	}
-
-    if(!is_legal(received->p2.gx, ctx))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_G_TO_THE_X4_IS_NOT_LEGAL);
-	return 0;
-	}
-
-   /* verify their ZKP(xc) */
-    if(!verify_zkp(&received->p1, ctx->p.g, ctx))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_VERIFY_X3_FAILED);
-	return 0;
-	}
-
-   /* verify their ZKP(xd) */
-    if(!verify_zkp(&received->p2, ctx->p.g, ctx))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_VERIFY_X4_FAILED);
-	return 0;
-	}
-
-   /* g^xd != 1 */
-    if(BN_is_one(received->p2.gx))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_G_TO_THE_X4_IS_ONE);
-	return 0;
-	}
-
-   /* Save the bits we need for later */
+{
+    if (!is_legal(received->p1.gx, ctx)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS,
+                 JPAKE_R_G_TO_THE_X3_IS_NOT_LEGAL);
+        return 0;
+    }
+
+    if (!is_legal(received->p2.gx, ctx)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS,
+                 JPAKE_R_G_TO_THE_X4_IS_NOT_LEGAL);
+        return 0;
+    }
+
+    /* verify their ZKP(xc) */
+    if (!verify_zkp(&received->p1, ctx->p.g, ctx)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_VERIFY_X3_FAILED);
+        return 0;
+    }
+
+    /* verify their ZKP(xd) */
+    if (!verify_zkp(&received->p2, ctx->p.g, ctx)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_VERIFY_X4_FAILED);
+        return 0;
+    }
+
+    /* g^xd != 1 */
+    if (BN_is_one(received->p2.gx)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP1_PROCESS, JPAKE_R_G_TO_THE_X4_IS_ONE);
+        return 0;
+    }
+
+    /* Save the bits we need for later */
     BN_copy(ctx->p.gxc, received->p1.gx);
     BN_copy(ctx->p.gxd, received->p2.gx);
 
     return 1;
-    }
-
+}
 
 int JPAKE_STEP2_generate(JPAKE_STEP2 *send, JPAKE_CTX *ctx)
-    {
+{
     BIGNUM *t1 = BN_new();
     BIGNUM *t2 = BN_new();
 
-   /*
+   /*-
     * X = g^{(xa + xc + xd) * xb * s}
     * t1 = g^xa
     */
     BN_mod_exp(t1, ctx->p.g, ctx->xa, ctx->p.p, ctx->ctx);
-   /* t2 = t1 * g^{xc} = g^{xa} * g^{xc} = g^{xa + xc} */
+    /* t2 = t1 * g^{xc} = g^{xa} * g^{xc} = g^{xa + xc} */
     BN_mod_mul(t2, t1, ctx->p.gxc, ctx->p.p, ctx->ctx);
-   /* t1 = t2 * g^{xd} = g^{xa + xc + xd} */
+    /* t1 = t2 * g^{xd} = g^{xa + xc + xd} */
     BN_mod_mul(t1, t2, ctx->p.gxd, ctx->p.p, ctx->ctx);
-   /* t2 = xb * s */
+    /* t2 = xb * s */
     BN_mod_mul(t2, ctx->xb, ctx->secret, ctx->p.q, ctx->ctx);
 
-   /*
+   /*-
     * ZKP(xb * s)
     * XXX: this is kinda funky, because we're using
     *
@@ -370,21 +365,21 @@ int JPAKE_STEP2_generate(JPAKE_STEP2 *send, JPAKE_CTX *ctx)
     */
     generate_step_part(send, t2, t1, ctx);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(t1);
     BN_free(t2);
 
     return 1;
-    }
+}
 
 /* gx = g^{xc + xa + xb} * xd * s */
 static int compute_key(JPAKE_CTX *ctx, const BIGNUM *gx)
-    {
+{
     BIGNUM *t1 = BN_new();
     BIGNUM *t2 = BN_new();
     BIGNUM *t3 = BN_new();
 
-   /*
+   /*-
     * K = (gx/g^{xb * xd * s})^{xb}
     *   = (g^{(xc + xa + xb) * xd * s - xb * xd *s})^{xb}
     *   = (g^{(xa + xc) * xd * s})^{xb}
@@ -392,120 +387,122 @@ static int compute_key(JPAKE_CTX *ctx, const BIGNUM *gx)
     * [which is the same regardless of who calculates it]
     */
 
-   /* t1 = (g^{xd})^{xb} = g^{xb * xd} */
+    /* t1 = (g^{xd})^{xb} = g^{xb * xd} */
     BN_mod_exp(t1, ctx->p.gxd, ctx->xb, ctx->p.p, ctx->ctx);
-   /* t2 = -s = q-s */
+    /* t2 = -s = q-s */
     BN_sub(t2, ctx->p.q, ctx->secret);
-   /* t3 = t1^t2 = g^{-xb * xd * s} */
+    /* t3 = t1^t2 = g^{-xb * xd * s} */
     BN_mod_exp(t3, t1, t2, ctx->p.p, ctx->ctx);
-   /* t1 = gx * t3 = X/g^{xb * xd * s} */
+    /* t1 = gx * t3 = X/g^{xb * xd * s} */
     BN_mod_mul(t1, gx, t3, ctx->p.p, ctx->ctx);
-   /* K = t1^{xb} */
+    /* K = t1^{xb} */
     BN_mod_exp(ctx->key, t1, ctx->xb, ctx->p.p, ctx->ctx);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(t3);
     BN_free(t2);
     BN_free(t1);
 
     return 1;
-    }
+}
 
 int JPAKE_STEP2_process(JPAKE_CTX *ctx, const JPAKE_STEP2 *received)
-    {
+{
     BIGNUM *t1 = BN_new();
     BIGNUM *t2 = BN_new();
     int ret = 0;
 
-   /*
+   /*-
     * g' = g^{xc + xa + xb} [from our POV]
     * t1 = xa + xb
     */
     BN_mod_add(t1, ctx->xa, ctx->xb, ctx->p.q, ctx->ctx);
-   /* t2 = g^{t1} = g^{xa+xb} */
+    /* t2 = g^{t1} = g^{xa+xb} */
     BN_mod_exp(t2, ctx->p.g, t1, ctx->p.p, ctx->ctx);
-   /* t1 = g^{xc} * t2 = g^{xc + xa + xb} */
+    /* t1 = g^{xc} * t2 = g^{xc + xa + xb} */
     BN_mod_mul(t1, ctx->p.gxc, t2, ctx->p.p, ctx->ctx);
 
-    if(verify_zkp(received, t1, ctx))
-	ret = 1;
+    if (verify_zkp(received, t1, ctx))
+        ret = 1;
     else
-	JPAKEerr(JPAKE_F_JPAKE_STEP2_PROCESS, JPAKE_R_VERIFY_B_FAILED);
+        JPAKEerr(JPAKE_F_JPAKE_STEP2_PROCESS, JPAKE_R_VERIFY_B_FAILED);
 
     compute_key(ctx, received->gx);
 
-   /* cleanup */
+    /* cleanup */
     BN_free(t2);
     BN_free(t1);
 
     return ret;
-    }
+}
 
 static void quickhashbn(unsigned char *md, const BIGNUM *bn)
-    {
+{
     SHA_CTX sha;
 
     SHA1_Init(&sha);
     hashbn(&sha, bn);
     SHA1_Final(md, &sha);
-    }
+}
 
 void JPAKE_STEP3A_init(JPAKE_STEP3A *s3a)
-    {}
+{
+}
 
 int JPAKE_STEP3A_generate(JPAKE_STEP3A *send, JPAKE_CTX *ctx)
-    {
+{
     quickhashbn(send->hhk, ctx->key);
     SHA1(send->hhk, sizeof send->hhk, send->hhk);
 
     return 1;
-    }
+}
 
 int JPAKE_STEP3A_process(JPAKE_CTX *ctx, const JPAKE_STEP3A *received)
-    {
+{
     unsigned char hhk[SHA_DIGEST_LENGTH];
 
     quickhashbn(hhk, ctx->key);
     SHA1(hhk, sizeof hhk, hhk);
-    if(memcmp(hhk, received->hhk, sizeof hhk))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP3A_PROCESS, JPAKE_R_HASH_OF_HASH_OF_KEY_MISMATCH);
-	return 0;
-	}
-    return 1;
+    if (memcmp(hhk, received->hhk, sizeof hhk)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP3A_PROCESS,
+                 JPAKE_R_HASH_OF_HASH_OF_KEY_MISMATCH);
+        return 0;
     }
+    return 1;
+}
 
 void JPAKE_STEP3A_release(JPAKE_STEP3A *s3a)
-    {}
+{
+}
 
 void JPAKE_STEP3B_init(JPAKE_STEP3B *s3b)
-    {}
+{
+}
 
 int JPAKE_STEP3B_generate(JPAKE_STEP3B *send, JPAKE_CTX *ctx)
-    {
+{
     quickhashbn(send->hk, ctx->key);
 
     return 1;
-    }
+}
 
 int JPAKE_STEP3B_process(JPAKE_CTX *ctx, const JPAKE_STEP3B *received)
-    {
+{
     unsigned char hk[SHA_DIGEST_LENGTH];
 
     quickhashbn(hk, ctx->key);
-    if(memcmp(hk, received->hk, sizeof hk))
-	{
-	JPAKEerr(JPAKE_F_JPAKE_STEP3B_PROCESS, JPAKE_R_HASH_OF_KEY_MISMATCH);
-	return 0;
-	}
-    return 1;
+    if (memcmp(hk, received->hk, sizeof hk)) {
+        JPAKEerr(JPAKE_F_JPAKE_STEP3B_PROCESS, JPAKE_R_HASH_OF_KEY_MISMATCH);
+        return 0;
     }
+    return 1;
+}
 
 void JPAKE_STEP3B_release(JPAKE_STEP3B *s3b)
-    {}
+{
+}
 
 const BIGNUM *JPAKE_get_shared_key(JPAKE_CTX *ctx)
-    {
+{
     return ctx->key;
-    }
-
+}