Initial Commit

2017-02-25 23:55:24 +01:00
commit 1fe2e8ab62
4868 changed files with 1487355 additions and 0 deletions
--- a/openssl-1.0.2f/crypto/x509/x509_cmp.c
+++ b/openssl-1.0.2f/crypto/x509/x509_cmp.c
@@ -0,0 +1,498 @@
+/* crypto/x509/x509_cmp.c */
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    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 the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include "cryptlib.h"
+#include <openssl/asn1.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+
+int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b)
+{
+    int i;
+    X509_CINF *ai, *bi;
+
+    ai = a->cert_info;
+    bi = b->cert_info;
+    i = M_ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber);
+    if (i)
+        return (i);
+    return (X509_NAME_cmp(ai->issuer, bi->issuer));
+}
+
+#ifndef OPENSSL_NO_MD5
+unsigned long X509_issuer_and_serial_hash(X509 *a)
+{
+    unsigned long ret = 0;
+    EVP_MD_CTX ctx;
+    unsigned char md[16];
+    char *f;
+
+    EVP_MD_CTX_init(&ctx);
+    f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0);
+    if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL))
+        goto err;
+    if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f)))
+        goto err;
+    OPENSSL_free(f);
+    if (!EVP_DigestUpdate
+        (&ctx, (unsigned char *)a->cert_info->serialNumber->data,
+         (unsigned long)a->cert_info->serialNumber->length))
+        goto err;
+    if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL))
+        goto err;
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+ err:
+    EVP_MD_CTX_cleanup(&ctx);
+    return (ret);
+}
+#endif
+
+int X509_issuer_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer));
+}
+
+int X509_subject_name_cmp(const X509 *a, const X509 *b)
+{
+    return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject));
+}
+
+int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b)
+{
+    return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer));
+}
+
+#ifndef OPENSSL_NO_SHA
+int X509_CRL_match(const X509_CRL *a, const X509_CRL *b)
+{
+    return memcmp(a->sha1_hash, b->sha1_hash, 20);
+}
+#endif
+
+X509_NAME *X509_get_issuer_name(X509 *a)
+{
+    return (a->cert_info->issuer);
+}
+
+unsigned long X509_issuer_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->issuer));
+}
+
+#ifndef OPENSSL_NO_MD5
+unsigned long X509_issuer_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->issuer));
+}
+#endif
+
+X509_NAME *X509_get_subject_name(X509 *a)
+{
+    return (a->cert_info->subject);
+}
+
+ASN1_INTEGER *X509_get_serialNumber(X509 *a)
+{
+    return (a->cert_info->serialNumber);
+}
+
+unsigned long X509_subject_name_hash(X509 *x)
+{
+    return (X509_NAME_hash(x->cert_info->subject));
+}
+
+#ifndef OPENSSL_NO_MD5
+unsigned long X509_subject_name_hash_old(X509 *x)
+{
+    return (X509_NAME_hash_old(x->cert_info->subject));
+}
+#endif
+
+#ifndef OPENSSL_NO_SHA
+/*
+ * Compare two certificates: they must be identical for this to work. NB:
+ * Although "cmp" operations are generally prototyped to take "const"
+ * arguments (eg. for use in STACKs), the way X509 handling is - these
+ * operations may involve ensuring the hashes are up-to-date and ensuring
+ * certain cert information is cached. So this is the point where the
+ * "depth-first" constification tree has to halt with an evil cast.
+ */
+int X509_cmp(const X509 *a, const X509 *b)
+{
+    int rv;
+    /* ensure hash is valid */
+    X509_check_purpose((X509 *)a, -1, 0);
+    X509_check_purpose((X509 *)b, -1, 0);
+
+    rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH);
+    if (rv)
+        return rv;
+    /* Check for match against stored encoding too */
+    if (!a->cert_info->enc.modified && !b->cert_info->enc.modified) {
+        rv = (int)(a->cert_info->enc.len - b->cert_info->enc.len);
+        if (rv)
+            return rv;
+        return memcmp(a->cert_info->enc.enc, b->cert_info->enc.enc,
+                      a->cert_info->enc.len);
+    }
+    return rv;
+}
+#endif
+
+int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b)
+{
+    int ret;
+
+    /* Ensure canonical encoding is present and up to date */
+
+    if (!a->canon_enc || a->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)a, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    if (!b->canon_enc || b->modified) {
+        ret = i2d_X509_NAME((X509_NAME *)b, NULL);
+        if (ret < 0)
+            return -2;
+    }
+
+    ret = a->canon_enclen - b->canon_enclen;
+
+    if (ret)
+        return ret;
+
+    return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen);
+
+}
+
+unsigned long X509_NAME_hash(X509_NAME *x)
+{
+    unsigned long ret = 0;
+    unsigned char md[SHA_DIGEST_LENGTH];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(),
+                    NULL))
+        return 0;
+
+    ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+           ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+        ) & 0xffffffffL;
+    return (ret);
+}
+
+#ifndef OPENSSL_NO_MD5
+/*
+ * I now DER encode the name and hash it.  Since I cache the DER encoding,
+ * this is reasonably efficient.
+ */
+
+unsigned long X509_NAME_hash_old(X509_NAME *x)
+{
+    EVP_MD_CTX md_ctx;
+    unsigned long ret = 0;
+    unsigned char md[16];
+
+    /* Make sure X509_NAME structure contains valid cached encoding */
+    i2d_X509_NAME(x, NULL);
+    EVP_MD_CTX_init(&md_ctx);
+    EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+    if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL)
+        && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length)
+        && EVP_DigestFinal_ex(&md_ctx, md, NULL))
+        ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) |
+               ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L)
+            ) & 0xffffffffL;
+    EVP_MD_CTX_cleanup(&md_ctx);
+
+    return (ret);
+}
+#endif
+
+/* Search a stack of X509 for a match */
+X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name,
+                                     ASN1_INTEGER *serial)
+{
+    int i;
+    X509_CINF cinf;
+    X509 x, *x509 = NULL;
+
+    if (!sk)
+        return NULL;
+
+    x.cert_info = &cinf;
+    cinf.serialNumber = serial;
+    cinf.issuer = name;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_issuer_and_serial_cmp(x509, &x) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name)
+{
+    X509 *x509;
+    int i;
+
+    for (i = 0; i < sk_X509_num(sk); i++) {
+        x509 = sk_X509_value(sk, i);
+        if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0)
+            return (x509);
+    }
+    return (NULL);
+}
+
+EVP_PKEY *X509_get_pubkey(X509 *x)
+{
+    if ((x == NULL) || (x->cert_info == NULL))
+        return (NULL);
+    return (X509_PUBKEY_get(x->cert_info->key));
+}
+
+ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x)
+{
+    if (!x)
+        return NULL;
+    return x->cert_info->key->public_key;
+}
+
+int X509_check_private_key(X509 *x, EVP_PKEY *k)
+{
+    EVP_PKEY *xk;
+    int ret;
+
+    xk = X509_get_pubkey(x);
+
+    if (xk)
+        ret = EVP_PKEY_cmp(xk, k);
+    else
+        ret = -2;
+
+    switch (ret) {
+    case 1:
+        break;
+    case 0:
+        X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_VALUES_MISMATCH);
+        break;
+    case -1:
+        X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH);
+        break;
+    case -2:
+        X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE);
+    }
+    if (xk)
+        EVP_PKEY_free(xk);
+    if (ret > 0)
+        return 1;
+    return 0;
+}
+
+/*
+ * Check a suite B algorithm is permitted: pass in a public key and the NID
+ * of its signature (or 0 if no signature). The pflags is a pointer to a
+ * flags field which must contain the suite B verification flags.
+ */
+
+#ifndef OPENSSL_NO_EC
+
+static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags)
+{
+    const EC_GROUP *grp = NULL;
+    int curve_nid;
+    if (pkey && pkey->type == EVP_PKEY_EC)
+        grp = EC_KEY_get0_group(pkey->pkey.ec);
+    if (!grp)
+        return X509_V_ERR_SUITE_B_INVALID_ALGORITHM;
+    curve_nid = EC_GROUP_get_curve_name(grp);
+    /* Check curve is consistent with LOS */
+    if (curve_nid == NID_secp384r1) { /* P-384 */
+        /*
+         * Check signature algorithm is consistent with curve.
+         */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+        /* If we encounter P-384 we cannot use P-256 later */
+        *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY;
+    } else if (curve_nid == NID_X9_62_prime256v1) { /* P-256 */
+        if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256)
+            return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM;
+        if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY))
+            return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED;
+    } else
+        return X509_V_ERR_SUITE_B_INVALID_CURVE;
+
+    return X509_V_OK;
+}
+
+int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain,
+                            unsigned long flags)
+{
+    int rv, i, sign_nid;
+    EVP_PKEY *pk = NULL;
+    unsigned long tflags;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    tflags = flags;
+    /* If no EE certificate passed in must be first in chain */
+    if (x == NULL) {
+        x = sk_X509_value(chain, 0);
+        i = 1;
+    } else
+        i = 0;
+
+    if (X509_get_version(x) != 2) {
+        rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+
+    pk = X509_get_pubkey(x);
+    /* Check EE key only */
+    rv = check_suite_b(pk, -1, &tflags);
+    if (rv != X509_V_OK) {
+        /* Correct error depth */
+        i = 0;
+        goto end;
+    }
+    for (; i < sk_X509_num(chain); i++) {
+        sign_nid = X509_get_signature_nid(x);
+        x = sk_X509_value(chain, i);
+        if (X509_get_version(x) != 2) {
+            rv = X509_V_ERR_SUITE_B_INVALID_VERSION;
+            goto end;
+        }
+        EVP_PKEY_free(pk);
+        pk = X509_get_pubkey(x);
+        rv = check_suite_b(pk, sign_nid, &tflags);
+        if (rv != X509_V_OK)
+            goto end;
+    }
+
+    /* Final check: root CA signature */
+    rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags);
+ end:
+    if (pk)
+        EVP_PKEY_free(pk);
+    if (rv != X509_V_OK) {
+        /* Invalid signature or LOS errors are for previous cert */
+        if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM
+             || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i)
+            i--;
+        /*
+         * If we have LOS error and flags changed then we are signing P-384
+         * with P-256. Use more meaninggul error.
+         */
+        if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags)
+            rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256;
+        if (perror_depth)
+            *perror_depth = i;
+    }
+    return rv;
+}
+
+int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags)
+{
+    int sign_nid;
+    if (!(flags & X509_V_FLAG_SUITEB_128_LOS))
+        return X509_V_OK;
+    sign_nid = OBJ_obj2nid(crl->crl->sig_alg->algorithm);
+    return check_suite_b(pk, sign_nid, &flags);
+}
+
+#else
+int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain,
+                            unsigned long flags)
+{
+    return 0;
+}
+
+int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags)
+{
+    return 0;
+}
+
+#endif
+/*
+ * Not strictly speaking an "up_ref" as a STACK doesn't have a reference
+ * count but it has the same effect by duping the STACK and upping the ref of
+ * each X509 structure.
+ */
+STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain)
+{
+    STACK_OF(X509) *ret;
+    int i;
+    ret = sk_X509_dup(chain);
+    for (i = 0; i < sk_X509_num(ret); i++) {
+        X509 *x = sk_X509_value(ret, i);
+        CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
+    }
+    return ret;
+}