--- /dev/null
+/* 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 <openssl/digest.h>
+
+#include <string.h>
+
+#include <openssl/asn1.h>
+#include <openssl/bytestring.h>
+#include <openssl/nid.h>
+
+#include "../internal.h"
+
+
+struct nid_to_digest {
+ int nid;
+ const EVP_MD* (*md_func)(void);
+ const char *short_name;
+ const char *long_name;
+};
+
+static const struct nid_to_digest nid_to_digest_mapping[] = {
+ {NID_md4, EVP_md4, SN_md4, LN_md4},
+ {NID_md5, EVP_md5, SN_md5, LN_md5},
+ {NID_sha1, EVP_sha1, SN_sha1, LN_sha1},
+ {NID_sha224, EVP_sha224, SN_sha224, LN_sha224},
+ {NID_sha256, EVP_sha256, SN_sha256, LN_sha256},
+ {NID_sha384, EVP_sha384, SN_sha384, LN_sha384},
+ {NID_sha512, EVP_sha512, SN_sha512, LN_sha512},
+ {NID_md5_sha1, EVP_md5_sha1, SN_md5_sha1, LN_md5_sha1},
+ // As a remnant of signing |EVP_MD|s, OpenSSL returned the corresponding
+ // hash function when given a signature OID. To avoid unintended lax parsing
+ // of hash OIDs, this is no longer supported for lookup by OID or NID.
+ // Node.js, however, exposes |EVP_get_digestbyname|'s full behavior to
+ // consumers so we retain it there.
+ {NID_undef, EVP_sha1, SN_dsaWithSHA, LN_dsaWithSHA},
+ {NID_undef, EVP_sha1, SN_dsaWithSHA1, LN_dsaWithSHA1},
+ {NID_undef, EVP_sha1, SN_ecdsa_with_SHA1, NULL},
+ {NID_undef, EVP_md5, SN_md5WithRSAEncryption, LN_md5WithRSAEncryption},
+ {NID_undef, EVP_sha1, SN_sha1WithRSAEncryption, LN_sha1WithRSAEncryption},
+ {NID_undef, EVP_sha224, SN_sha224WithRSAEncryption,
+ LN_sha224WithRSAEncryption},
+ {NID_undef, EVP_sha256, SN_sha256WithRSAEncryption,
+ LN_sha256WithRSAEncryption},
+ {NID_undef, EVP_sha384, SN_sha384WithRSAEncryption,
+ LN_sha384WithRSAEncryption},
+ {NID_undef, EVP_sha512, SN_sha512WithRSAEncryption,
+ LN_sha512WithRSAEncryption},
+};
+
+const EVP_MD* EVP_get_digestbynid(int nid) {
+ if (nid == NID_undef) {
+ // Skip the |NID_undef| entries in |nid_to_digest_mapping|.
+ return NULL;
+ }
+
+ for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+ if (nid_to_digest_mapping[i].nid == nid) {
+ return nid_to_digest_mapping[i].md_func();
+ }
+ }
+
+ return NULL;
+}
+
+static const struct {
+ uint8_t oid[9];
+ uint8_t oid_len;
+ int nid;
+} kMDOIDs[] = {
+ // 1.2.840.113549.2.4
+ { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x04}, 8, NID_md4 },
+ // 1.2.840.113549.2.5
+ { {0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x02, 0x05}, 8, NID_md5 },
+ // 1.3.14.3.2.26
+ { {0x2b, 0x0e, 0x03, 0x02, 0x1a}, 5, NID_sha1 },
+ // 2.16.840.1.101.3.4.2.1
+ { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01}, 9, NID_sha256 },
+ // 2.16.840.1.101.3.4.2.2
+ { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02}, 9, NID_sha384 },
+ // 2.16.840.1.101.3.4.2.3
+ { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03}, 9, NID_sha512 },
+ // 2.16.840.1.101.3.4.2.4
+ { {0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04}, 9, NID_sha224 },
+};
+
+static const EVP_MD *cbs_to_md(const CBS *cbs) {
+ for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+ if (CBS_len(cbs) == kMDOIDs[i].oid_len &&
+ OPENSSL_memcmp(CBS_data(cbs), kMDOIDs[i].oid, kMDOIDs[i].oid_len) ==
+ 0) {
+ return EVP_get_digestbynid(kMDOIDs[i].nid);
+ }
+ }
+
+ return NULL;
+}
+
+const EVP_MD *EVP_get_digestbyobj(const ASN1_OBJECT *obj) {
+ // Handle objects with no corresponding OID.
+ if (obj->nid != NID_undef) {
+ return EVP_get_digestbynid(obj->nid);
+ }
+
+ CBS cbs;
+ CBS_init(&cbs, obj->data, obj->length);
+ return cbs_to_md(&cbs);
+}
+
+const EVP_MD *EVP_parse_digest_algorithm(CBS *cbs) {
+ CBS algorithm, oid;
+ if (!CBS_get_asn1(cbs, &algorithm, CBS_ASN1_SEQUENCE) ||
+ !CBS_get_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+ OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+ return NULL;
+ }
+
+ const EVP_MD *ret = cbs_to_md(&oid);
+ if (ret == NULL) {
+ OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+ return NULL;
+ }
+
+ // The parameters, if present, must be NULL. Historically, whether the NULL
+ // was included or omitted was not well-specified. When parsing an
+ // AlgorithmIdentifier, we allow both. (Note this code is not used when
+ // verifying RSASSA-PKCS1-v1_5 signatures.)
+ if (CBS_len(&algorithm) > 0) {
+ CBS param;
+ if (!CBS_get_asn1(&algorithm, ¶m, CBS_ASN1_NULL) ||
+ CBS_len(¶m) != 0 ||
+ CBS_len(&algorithm) != 0) {
+ OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_DECODE_ERROR);
+ return NULL;
+ }
+ }
+
+ return ret;
+}
+
+int EVP_marshal_digest_algorithm(CBB *cbb, const EVP_MD *md) {
+ CBB algorithm, oid, null;
+ if (!CBB_add_asn1(cbb, &algorithm, CBS_ASN1_SEQUENCE) ||
+ !CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT)) {
+ OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ int found = 0;
+ int nid = EVP_MD_type(md);
+ for (size_t i = 0; i < OPENSSL_ARRAY_SIZE(kMDOIDs); i++) {
+ if (nid == kMDOIDs[i].nid) {
+ if (!CBB_add_bytes(&oid, kMDOIDs[i].oid, kMDOIDs[i].oid_len)) {
+ OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ OPENSSL_PUT_ERROR(DIGEST, DIGEST_R_UNKNOWN_HASH);
+ return 0;
+ }
+
+ if (!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
+ !CBB_flush(cbb)) {
+ OPENSSL_PUT_ERROR(DIGEST, ERR_R_MALLOC_FAILURE);
+ return 0;
+ }
+
+ return 1;
+}
+
+const EVP_MD *EVP_get_digestbyname(const char *name) {
+ for (unsigned i = 0; i < OPENSSL_ARRAY_SIZE(nid_to_digest_mapping); i++) {
+ const char *short_name = nid_to_digest_mapping[i].short_name;
+ const char *long_name = nid_to_digest_mapping[i].long_name;
+ if ((short_name && strcmp(short_name, name) == 0) ||
+ (long_name && strcmp(long_name, name) == 0)) {
+ return nid_to_digest_mapping[i].md_func();
+ }
+ }
+
+ return NULL;
+}
git://repos.xcallymotion.com / motion2.git / blobdiff