initial/final commitHEADmaster

1 files changed, 156 insertions, 0 deletions

diff --git a/openssl-1.1.0h/crypto/rsa/rsa_chk.c b/openssl-1.1.0h/crypto/rsa/rsa_chk.c
new file mode 100644
index 0000000..00260fb
--- /dev/null
+++ b/openssl-1.1.0h/crypto/rsa/rsa_chk.c
@@ -0,0 +1,156 @@
+/*
+ * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 <openssl/bn.h>
+#include <openssl/err.h>
+#include "rsa_locl.h"
+
+int RSA_check_key(const RSA *key)
+{
+    return RSA_check_key_ex(key, NULL);
+}
+
+int RSA_check_key_ex(const RSA *key, BN_GENCB *cb)
+{
+    BIGNUM *i, *j, *k, *l, *m;
+    BN_CTX *ctx;
+    int ret = 1;
+
+    if (key->p == NULL || key->q == NULL || key->n == NULL
+            || key->e == NULL || key->d == NULL) {
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_VALUE_MISSING);
+        return 0;
+    }
+
+    i = BN_new();
+    j = BN_new();
+    k = BN_new();
+    l = BN_new();
+    m = BN_new();
+    ctx = BN_CTX_new();
+    if (i == NULL || j == NULL || k == NULL || l == NULL
+            || m == NULL || ctx == NULL) {
+        ret = -1;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (BN_is_one(key->e)) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_BAD_E_VALUE);
+    }
+    if (!BN_is_odd(key->e)) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_BAD_E_VALUE);
+    }
+
+    /* p prime? */
+    if (BN_is_prime_ex(key->p, BN_prime_checks, NULL, cb) != 1) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_P_NOT_PRIME);
+    }
+
+    /* q prime? */
+    if (BN_is_prime_ex(key->q, BN_prime_checks, NULL, cb) != 1) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_Q_NOT_PRIME);
+    }
+
+    /* n = p*q? */
+    if (!BN_mul(i, key->p, key->q, ctx)) {
+        ret = -1;
+        goto err;
+    }
+    if (BN_cmp(i, key->n) != 0) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_N_DOES_NOT_EQUAL_P_Q);
+    }
+
+    /* d*e = 1  mod lcm(p-1,q-1)? */
+    if (!BN_sub(i, key->p, BN_value_one())) {
+        ret = -1;
+        goto err;
+    }
+    if (!BN_sub(j, key->q, BN_value_one())) {
+        ret = -1;
+        goto err;
+    }
+
+    /* now compute k = lcm(i,j) */
+    if (!BN_mul(l, i, j, ctx)) {
+        ret = -1;
+        goto err;
+    }
+    if (!BN_gcd(m, i, j, ctx)) {
+        ret = -1;
+        goto err;
+    }
+    if (!BN_div(k, NULL, l, m, ctx)) { /* remainder is 0 */
+        ret = -1;
+        goto err;
+    }
+    if (!BN_mod_mul(i, key->d, key->e, k, ctx)) {
+        ret = -1;
+        goto err;
+    }
+
+    if (!BN_is_one(i)) {
+        ret = 0;
+        RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_D_E_NOT_CONGRUENT_TO_1);
+    }
+
+    if (key->dmp1 != NULL && key->dmq1 != NULL && key->iqmp != NULL) {
+        /* dmp1 = d mod (p-1)? */
+        if (!BN_sub(i, key->p, BN_value_one())) {
+            ret = -1;
+            goto err;
+        }
+        if (!BN_mod(j, key->d, i, ctx)) {
+            ret = -1;
+            goto err;
+        }
+        if (BN_cmp(j, key->dmp1) != 0) {
+            ret = 0;
+            RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_DMP1_NOT_CONGRUENT_TO_D);
+        }
+
+        /* dmq1 = d mod (q-1)? */
+        if (!BN_sub(i, key->q, BN_value_one())) {
+            ret = -1;
+            goto err;
+        }
+        if (!BN_mod(j, key->d, i, ctx)) {
+            ret = -1;
+            goto err;
+        }
+        if (BN_cmp(j, key->dmq1) != 0) {
+            ret = 0;
+            RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_DMQ1_NOT_CONGRUENT_TO_D);
+        }
+
+        /* iqmp = q^-1 mod p? */
+        if (!BN_mod_inverse(i, key->q, key->p, ctx)) {
+            ret = -1;
+            goto err;
+        }
+        if (BN_cmp(i, key->iqmp) != 0) {
+            ret = 0;
+            RSAerr(RSA_F_RSA_CHECK_KEY_EX, RSA_R_IQMP_NOT_INVERSE_OF_Q);
+        }
+    }
+
+ err:
+    BN_free(i);
+    BN_free(j);
+    BN_free(k);
+    BN_free(l);
+    BN_free(m);
+    BN_CTX_free(ctx);
+    return ret;
+}