deps: upgrade openssl to 1.0.2a

This just replaces all sources in deps/openssl/openssl to originals in
https://www.openssl.org/source/openssl-1.0.2a.tar.gz

Fixes: https://github.com/iojs/io.js/issues/589
PR-URL: https://github.com/iojs/io.js/pull/1389
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 36 insertions, 10 deletions

diff --git a/deps/openssl/openssl/crypto/dh/dh_check.c b/deps/openssl/openssl/crypto/dh/dh_check.c
index c39ed97ba6..347467c6a4 100644
--- a/deps/openssl/openssl/crypto/dh/dh_check.c
+++ b/deps/openssl/openssl/crypto/dh/dh_check.c
@@ -76,17 +76,43 @@ int DH_check(const DH *dh, int *ret)
     int ok = 0;
     BN_CTX *ctx = NULL;
     BN_ULONG l;
-    BIGNUM *q = NULL;
+    BIGNUM *t1 = NULL, *t2 = NULL;
 
     *ret = 0;
     ctx = BN_CTX_new();
     if (ctx == NULL)
         goto err;
-    q = BN_new();
-    if (q == NULL)
+    BN_CTX_start(ctx);
+    t1 = BN_CTX_get(ctx);
+    if (t1 == NULL)
+        goto err;
+    t2 = BN_CTX_get(ctx);
+    if (t2 == NULL)
         goto err;
 
-    if (BN_is_word(dh->g, DH_GENERATOR_2)) {
+    if (dh->q) {
+        if (BN_cmp(dh->g, BN_value_one()) <= 0)
+            *ret |= DH_NOT_SUITABLE_GENERATOR;
+        else if (BN_cmp(dh->g, dh->p) >= 0)
+            *ret |= DH_NOT_SUITABLE_GENERATOR;
+        else {
+            /* Check g^q == 1 mod p */
+            if (!BN_mod_exp(t1, dh->g, dh->q, dh->p, ctx))
+                goto err;
+            if (!BN_is_one(t1))
+                *ret |= DH_NOT_SUITABLE_GENERATOR;
+        }
+        if (!BN_is_prime_ex(dh->q, BN_prime_checks, ctx, NULL))
+            *ret |= DH_CHECK_Q_NOT_PRIME;
+        /* Check p == 1 mod q  i.e. q divides p - 1 */
+        if (!BN_div(t1, t2, dh->p, dh->q, ctx))
+            goto err;
+        if (!BN_is_one(t2))
+            *ret |= DH_CHECK_INVALID_Q_VALUE;
+        if (dh->j && BN_cmp(dh->j, t1))
+            *ret |= DH_CHECK_INVALID_J_VALUE;
+
+    } else if (BN_is_word(dh->g, DH_GENERATOR_2)) {
         l = BN_mod_word(dh->p, 24);
         if (l != 11)
             *ret |= DH_NOT_SUITABLE_GENERATOR;
@@ -107,18 +133,18 @@ int DH_check(const DH *dh, int *ret)
 
     if (!BN_is_prime_ex(dh->p, BN_prime_checks, ctx, NULL))
         *ret |= DH_CHECK_P_NOT_PRIME;
-    else {
-        if (!BN_rshift1(q, dh->p))
+    else if (!dh->q) {
+        if (!BN_rshift1(t1, dh->p))
             goto err;
-        if (!BN_is_prime_ex(q, BN_prime_checks, ctx, NULL))
+        if (!BN_is_prime_ex(t1, BN_prime_checks, ctx, NULL))
             *ret |= DH_CHECK_P_NOT_SAFE_PRIME;
     }
     ok = 1;
  err:
-    if (ctx != NULL)
+    if (ctx != NULL) {
+        BN_CTX_end(ctx);
         BN_CTX_free(ctx);
-    if (q != NULL)
-        BN_free(q);
+    }
     return (ok);
 }