You've already forked linux-packaging-mono
Imported Upstream version 4.8.0.309
Former-commit-id: 5f9c6ae75f295e057a7d2971f3a6df4656fa8850
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
parent
ee1447783b
commit
94b2861243
336
external/boringssl/crypto/evp/evp_asn1.c
vendored
Normal file
336
external/boringssl/crypto/evp/evp_asn1.c
vendored
Normal file
@@ -0,0 +1,336 @@
|
||||
/* 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/evp.h>
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include <openssl/bytestring.h>
|
||||
#include <openssl/dsa.h>
|
||||
#include <openssl/ec_key.h>
|
||||
#include <openssl/err.h>
|
||||
#include <openssl/rsa.h>
|
||||
|
||||
#include "internal.h"
|
||||
|
||||
|
||||
static const EVP_PKEY_ASN1_METHOD *const kASN1Methods[] = {
|
||||
&rsa_asn1_meth,
|
||||
&ec_asn1_meth,
|
||||
&dsa_asn1_meth,
|
||||
};
|
||||
|
||||
static int parse_key_type(CBS *cbs, int *out_type) {
|
||||
CBS oid;
|
||||
if (!CBS_get_asn1(cbs, &oid, CBS_ASN1_OBJECT)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned i;
|
||||
for (i = 0; i < sizeof(kASN1Methods)/sizeof(kASN1Methods[0]); i++) {
|
||||
const EVP_PKEY_ASN1_METHOD *method = kASN1Methods[i];
|
||||
if (CBS_len(&oid) == method->oid_len &&
|
||||
memcmp(CBS_data(&oid), method->oid, method->oid_len) == 0) {
|
||||
*out_type = method->pkey_id;
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
EVP_PKEY *EVP_parse_public_key(CBS *cbs) {
|
||||
/* Parse the SubjectPublicKeyInfo. */
|
||||
CBS spki, algorithm, key;
|
||||
int type;
|
||||
uint8_t padding;
|
||||
if (!CBS_get_asn1(cbs, &spki, CBS_ASN1_SEQUENCE) ||
|
||||
!CBS_get_asn1(&spki, &algorithm, CBS_ASN1_SEQUENCE) ||
|
||||
!parse_key_type(&algorithm, &type) ||
|
||||
!CBS_get_asn1(&spki, &key, CBS_ASN1_BITSTRING) ||
|
||||
CBS_len(&spki) != 0 ||
|
||||
/* Every key type defined encodes the key as a byte string with the same
|
||||
* conversion to BIT STRING. */
|
||||
!CBS_get_u8(&key, &padding) ||
|
||||
padding != 0) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Set up an |EVP_PKEY| of the appropriate type. */
|
||||
EVP_PKEY *ret = EVP_PKEY_new();
|
||||
if (ret == NULL ||
|
||||
!EVP_PKEY_set_type(ret, type)) {
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Call into the type-specific SPKI decoding function. */
|
||||
if (ret->ameth->pub_decode == NULL) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
|
||||
goto err;
|
||||
}
|
||||
if (!ret->ameth->pub_decode(ret, &algorithm, &key)) {
|
||||
goto err;
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
||||
err:
|
||||
EVP_PKEY_free(ret);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int EVP_marshal_public_key(CBB *cbb, const EVP_PKEY *key) {
|
||||
if (key->ameth == NULL || key->ameth->pub_encode == NULL) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return key->ameth->pub_encode(cbb, key);
|
||||
}
|
||||
|
||||
EVP_PKEY *EVP_parse_private_key(CBS *cbs) {
|
||||
/* Parse the PrivateKeyInfo. */
|
||||
CBS pkcs8, algorithm, key;
|
||||
uint64_t version;
|
||||
int type;
|
||||
if (!CBS_get_asn1(cbs, &pkcs8, CBS_ASN1_SEQUENCE) ||
|
||||
!CBS_get_asn1_uint64(&pkcs8, &version) ||
|
||||
version != 0 ||
|
||||
!CBS_get_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
|
||||
!parse_key_type(&algorithm, &type) ||
|
||||
!CBS_get_asn1(&pkcs8, &key, CBS_ASN1_OCTETSTRING)) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* A PrivateKeyInfo ends with a SET of Attributes which we ignore. */
|
||||
|
||||
/* Set up an |EVP_PKEY| of the appropriate type. */
|
||||
EVP_PKEY *ret = EVP_PKEY_new();
|
||||
if (ret == NULL ||
|
||||
!EVP_PKEY_set_type(ret, type)) {
|
||||
goto err;
|
||||
}
|
||||
|
||||
/* Call into the type-specific PrivateKeyInfo decoding function. */
|
||||
if (ret->ameth->priv_decode == NULL) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
|
||||
goto err;
|
||||
}
|
||||
if (!ret->ameth->priv_decode(ret, &algorithm, &key)) {
|
||||
goto err;
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
||||
err:
|
||||
EVP_PKEY_free(ret);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
int EVP_marshal_private_key(CBB *cbb, const EVP_PKEY *key) {
|
||||
if (key->ameth == NULL || key->ameth->priv_encode == NULL) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return key->ameth->priv_encode(cbb, key);
|
||||
}
|
||||
|
||||
static EVP_PKEY *old_priv_decode(CBS *cbs, int type) {
|
||||
EVP_PKEY *ret = EVP_PKEY_new();
|
||||
if (ret == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
|
||||
switch (type) {
|
||||
case EVP_PKEY_EC: {
|
||||
EC_KEY *ec_key = EC_KEY_parse_private_key(cbs, NULL);
|
||||
if (ec_key == NULL || !EVP_PKEY_assign_EC_KEY(ret, ec_key)) {
|
||||
EC_KEY_free(ec_key);
|
||||
goto err;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
case EVP_PKEY_DSA: {
|
||||
DSA *dsa = DSA_parse_private_key(cbs);
|
||||
if (dsa == NULL || !EVP_PKEY_assign_DSA(ret, dsa)) {
|
||||
DSA_free(dsa);
|
||||
goto err;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
case EVP_PKEY_RSA: {
|
||||
RSA *rsa = RSA_parse_private_key(cbs);
|
||||
if (rsa == NULL || !EVP_PKEY_assign_RSA(ret, rsa)) {
|
||||
RSA_free(rsa);
|
||||
goto err;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
default:
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_PUBLIC_KEY_TYPE);
|
||||
goto err;
|
||||
}
|
||||
|
||||
err:
|
||||
EVP_PKEY_free(ret);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
EVP_PKEY *d2i_PrivateKey(int type, EVP_PKEY **out, const uint8_t **inp,
|
||||
long len) {
|
||||
if (len < 0) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Parse with the legacy format. */
|
||||
CBS cbs;
|
||||
CBS_init(&cbs, *inp, (size_t)len);
|
||||
EVP_PKEY *ret = old_priv_decode(&cbs, type);
|
||||
if (ret == NULL) {
|
||||
/* Try again with PKCS#8. */
|
||||
ERR_clear_error();
|
||||
CBS_init(&cbs, *inp, (size_t)len);
|
||||
ret = EVP_parse_private_key(&cbs);
|
||||
if (ret == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
if (ret->type != type) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
|
||||
EVP_PKEY_free(ret);
|
||||
return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
if (out != NULL) {
|
||||
EVP_PKEY_free(*out);
|
||||
*out = ret;
|
||||
}
|
||||
*inp = CBS_data(&cbs);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* num_elements parses one SEQUENCE from |in| and returns the number of elements
|
||||
* in it. On parse error, it returns zero. */
|
||||
static size_t num_elements(const uint8_t *in, size_t in_len) {
|
||||
CBS cbs, sequence;
|
||||
CBS_init(&cbs, in, (size_t)in_len);
|
||||
|
||||
if (!CBS_get_asn1(&cbs, &sequence, CBS_ASN1_SEQUENCE)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t count = 0;
|
||||
while (CBS_len(&sequence) > 0) {
|
||||
if (!CBS_get_any_asn1_element(&sequence, NULL, NULL, NULL)) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
count++;
|
||||
}
|
||||
|
||||
return count;
|
||||
}
|
||||
|
||||
EVP_PKEY *d2i_AutoPrivateKey(EVP_PKEY **out, const uint8_t **inp, long len) {
|
||||
if (len < 0) {
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Parse the input as a PKCS#8 PrivateKeyInfo. */
|
||||
CBS cbs;
|
||||
CBS_init(&cbs, *inp, (size_t)len);
|
||||
EVP_PKEY *ret = EVP_parse_private_key(&cbs);
|
||||
if (ret != NULL) {
|
||||
if (out != NULL) {
|
||||
EVP_PKEY_free(*out);
|
||||
*out = ret;
|
||||
}
|
||||
*inp = CBS_data(&cbs);
|
||||
return ret;
|
||||
}
|
||||
ERR_clear_error();
|
||||
|
||||
/* Count the elements to determine the legacy key format. */
|
||||
switch (num_elements(*inp, (size_t)len)) {
|
||||
case 4:
|
||||
return d2i_PrivateKey(EVP_PKEY_EC, out, inp, len);
|
||||
|
||||
case 6:
|
||||
return d2i_PrivateKey(EVP_PKEY_DSA, out, inp, len);
|
||||
|
||||
default:
|
||||
return d2i_PrivateKey(EVP_PKEY_RSA, out, inp, len);
|
||||
}
|
||||
}
|
||||
|
||||
int i2d_PublicKey(EVP_PKEY *key, uint8_t **outp) {
|
||||
switch (key->type) {
|
||||
case EVP_PKEY_RSA:
|
||||
return i2d_RSAPublicKey(key->pkey.rsa, outp);
|
||||
case EVP_PKEY_DSA:
|
||||
return i2d_DSAPublicKey(key->pkey.dsa, outp);
|
||||
case EVP_PKEY_EC:
|
||||
return i2o_ECPublicKey(key->pkey.ec, outp);
|
||||
default:
|
||||
OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_PUBLIC_KEY_TYPE);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user