From 31b9fa4f384115e400c0a49b35730b42d07b6ff6 Mon Sep 17 00:00:00 2001 From: "Lukacs T. Berki" Date: Thu, 7 Apr 2016 10:03:04 +0200 Subject: Add BoringSSL to third_party . As usual, README.md contains reproduction instructions. It would be better to directly use the source tree under `boringssl.googlesource.com`, but for the time being, this will do. Change-Id: I72ef030251c41eaed459c4abd93228f23223783b --- third_party/boringssl/src/crypto/evp/p_ec_asn1.c | 573 +++++++++++++++++++++++ 1 file changed, 573 insertions(+) create mode 100644 third_party/boringssl/src/crypto/evp/p_ec_asn1.c (limited to 'third_party/boringssl/src/crypto/evp/p_ec_asn1.c') diff --git a/third_party/boringssl/src/crypto/evp/p_ec_asn1.c b/third_party/boringssl/src/crypto/evp/p_ec_asn1.c new file mode 100644 index 0000000000..9867947977 --- /dev/null +++ b/third_party/boringssl/src/crypto/evp/p_ec_asn1.c @@ -0,0 +1,573 @@ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 2006. + */ +/* ==================================================================== + * Copyright (c) 2006 The OpenSSL Project. All rights reserved. + * + * 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 above 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 acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED 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 OpenSSL PROJECT OR + * ITS 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). */ + +#include + +#include +#include +#include +#include +#include +#include +#include + +#include "internal.h" + + +static int eckey_param2type(int *pptype, void **ppval, EC_KEY *ec_key) { + const EC_GROUP *group; + int nid; + + if (ec_key == NULL || (group = EC_KEY_get0_group(ec_key)) == NULL) { + OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS); + return 0; + } + + nid = EC_GROUP_get_curve_name(group); + if (nid == NID_undef) { + OPENSSL_PUT_ERROR(EVP, EVP_R_NO_NID_FOR_CURVE); + return 0; + } + + *ppval = (void*) OBJ_nid2obj(nid); + *pptype = V_ASN1_OBJECT; + return 1; +} + +static int eckey_pub_encode(X509_PUBKEY *pk, const EVP_PKEY *pkey) { + EC_KEY *ec_key = pkey->pkey.ec; + void *pval = NULL; + int ptype; + uint8_t *penc = NULL, *p; + int penclen; + + if (!eckey_param2type(&ptype, &pval, ec_key)) { + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + return 0; + } + penclen = i2o_ECPublicKey(ec_key, NULL); + if (penclen <= 0) { + goto err; + } + penc = OPENSSL_malloc(penclen); + if (!penc) { + goto err; + } + p = penc; + penclen = i2o_ECPublicKey(ec_key, &p); + if (penclen <= 0) { + goto err; + } + if (X509_PUBKEY_set0_param(pk, OBJ_nid2obj(EVP_PKEY_EC), ptype, pval, penc, + penclen)) { + return 1; + } + +err: + if (ptype == V_ASN1_OBJECT) { + ASN1_OBJECT_free(pval); + } else { + ASN1_STRING_free(pval); + } + if (penc) { + OPENSSL_free(penc); + } + return 0; +} + +static EC_KEY *eckey_type2param(int ptype, void *pval) { + EC_KEY *eckey = NULL; + + if (ptype == V_ASN1_SEQUENCE) { + ASN1_STRING *pstr = pval; + const uint8_t *pm = pstr->data; + int pmlen = pstr->length; + + eckey = d2i_ECParameters(NULL, &pm, pmlen); + if (eckey == NULL) { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + goto err; + } + } else if (ptype == V_ASN1_OBJECT) { + ASN1_OBJECT *poid = pval; + + /* type == V_ASN1_OBJECT => the parameters are given + * by an asn1 OID */ + eckey = EC_KEY_new_by_curve_name(OBJ_obj2nid(poid)); + if (eckey == NULL) { + goto err; + } + } else { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + goto err; + } + + return eckey; + +err: + if (eckey) { + EC_KEY_free(eckey); + } + return NULL; +} + +static int eckey_pub_decode(EVP_PKEY *pkey, X509_PUBKEY *pubkey) { + const uint8_t *p = NULL; + void *pval; + int ptype, pklen; + EC_KEY *eckey = NULL; + X509_ALGOR *palg; + + if (!X509_PUBKEY_get0_param(NULL, &p, &pklen, &palg, pubkey)) { + return 0; + } + X509_ALGOR_get0(NULL, &ptype, &pval, palg); + + eckey = eckey_type2param(ptype, pval); + if (!eckey) { + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + return 0; + } + + /* We have parameters now set public key */ + if (!o2i_ECPublicKey(&eckey, &p, pklen)) { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + goto err; + } + + EVP_PKEY_assign_EC_KEY(pkey, eckey); + return 1; + +err: + if (eckey) { + EC_KEY_free(eckey); + } + return 0; +} + +static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b) { + int r; + const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec); + const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec), + *pb = EC_KEY_get0_public_key(b->pkey.ec); + r = EC_POINT_cmp(group, pa, pb, NULL); + if (r == 0) { + return 1; + } else if (r == 1) { + return 0; + } else { + return -2; + } +} + +static int eckey_priv_decode(EVP_PKEY *pkey, PKCS8_PRIV_KEY_INFO *p8) { + const uint8_t *p = NULL; + void *pval; + int ptype, pklen; + EC_KEY *eckey = NULL; + X509_ALGOR *palg; + + if (!PKCS8_pkey_get0(NULL, &p, &pklen, &palg, p8)) { + return 0; + } + X509_ALGOR_get0(NULL, &ptype, &pval, palg); + + eckey = eckey_type2param(ptype, pval); + + if (!eckey) { + goto ecliberr; + } + + /* We have parameters now set private key */ + if (!d2i_ECPrivateKey(&eckey, &p, pklen)) { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + goto ecerr; + } + + /* calculate public key (if necessary) */ + if (EC_KEY_get0_public_key(eckey) == NULL) { + const BIGNUM *priv_key; + const EC_GROUP *group; + EC_POINT *pub_key; + /* the public key was not included in the SEC1 private + * key => calculate the public key */ + group = EC_KEY_get0_group(eckey); + pub_key = EC_POINT_new(group); + if (pub_key == NULL) { + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + goto ecliberr; + } + if (!EC_POINT_copy(pub_key, EC_GROUP_get0_generator(group))) { + EC_POINT_free(pub_key); + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + goto ecliberr; + } + priv_key = EC_KEY_get0_private_key(eckey); + if (!EC_POINT_mul(group, pub_key, priv_key, NULL, NULL, NULL)) { + EC_POINT_free(pub_key); + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + goto ecliberr; + } + if (EC_KEY_set_public_key(eckey, pub_key) == 0) { + EC_POINT_free(pub_key); + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + goto ecliberr; + } + EC_POINT_free(pub_key); + } + + EVP_PKEY_assign_EC_KEY(pkey, eckey); + return 1; + +ecliberr: + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); +ecerr: + if (eckey) { + EC_KEY_free(eckey); + } + return 0; +} + +static int eckey_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey) { + EC_KEY *ec_key; + uint8_t *ep, *p; + int eplen, ptype; + void *pval; + unsigned int tmp_flags, old_flags; + + ec_key = pkey->pkey.ec; + + if (!eckey_param2type(&ptype, &pval, ec_key)) { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + return 0; + } + + /* set the private key */ + + /* do not include the parameters in the SEC1 private key + * see PKCS#11 12.11 */ + old_flags = EC_KEY_get_enc_flags(ec_key); + tmp_flags = old_flags | EC_PKEY_NO_PARAMETERS; + EC_KEY_set_enc_flags(ec_key, tmp_flags); + eplen = i2d_ECPrivateKey(ec_key, NULL); + if (!eplen) { + EC_KEY_set_enc_flags(ec_key, old_flags); + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + return 0; + } + ep = (uint8_t *)OPENSSL_malloc(eplen); + if (!ep) { + EC_KEY_set_enc_flags(ec_key, old_flags); + OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE); + return 0; + } + p = ep; + if (!i2d_ECPrivateKey(ec_key, &p)) { + EC_KEY_set_enc_flags(ec_key, old_flags); + OPENSSL_free(ep); + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + return 0; + } + /* restore old encoding flags */ + EC_KEY_set_enc_flags(ec_key, old_flags); + + if (!PKCS8_pkey_set0(p8, (ASN1_OBJECT *)OBJ_nid2obj(NID_X9_62_id_ecPublicKey), + 0, ptype, pval, ep, eplen)) { + OPENSSL_free(ep); + return 0; + } + + return 1; +} + +static int int_ec_size(const EVP_PKEY *pkey) { + return ECDSA_size(pkey->pkey.ec); +} + +static int ec_bits(const EVP_PKEY *pkey) { + BIGNUM *order = BN_new(); + const EC_GROUP *group; + int ret; + + if (!order) { + ERR_clear_error(); + return 0; + } + group = EC_KEY_get0_group(pkey->pkey.ec); + if (!EC_GROUP_get_order(group, order, NULL)) { + ERR_clear_error(); + return 0; + } + + ret = BN_num_bits(order); + BN_free(order); + return ret; +} + +static int ec_missing_parameters(const EVP_PKEY *pkey) { + return EC_KEY_get0_group(pkey->pkey.ec) == NULL; +} + +static int ec_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) { + EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec)); + if (group == NULL || + EC_KEY_set_group(to->pkey.ec, group) == 0) { + return 0; + } + EC_GROUP_free(group); + return 1; +} + +static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) { + const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec), + *group_b = EC_KEY_get0_group(b->pkey.ec); + if (EC_GROUP_cmp(group_a, group_b, NULL) != 0) { + /* mismatch */ + return 0; + } + return 1; +} + +static void int_ec_free(EVP_PKEY *pkey) { EC_KEY_free(pkey->pkey.ec); } + +static int do_EC_KEY_print(BIO *bp, const EC_KEY *x, int off, int ktype) { + uint8_t *buffer = NULL; + const char *ecstr; + size_t buf_len = 0, i; + int ret = 0, reason = ERR_R_BIO_LIB; + BIGNUM *order = NULL; + BN_CTX *ctx = NULL; + const EC_GROUP *group; + const EC_POINT *public_key; + const BIGNUM *priv_key; + uint8_t *pub_key_bytes = NULL; + size_t pub_key_bytes_len = 0; + + if (x == NULL || (group = EC_KEY_get0_group(x)) == NULL) { + reason = ERR_R_PASSED_NULL_PARAMETER; + goto err; + } + + ctx = BN_CTX_new(); + if (ctx == NULL) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + + if (ktype > 0) { + public_key = EC_KEY_get0_public_key(x); + if (public_key != NULL) { + pub_key_bytes_len = EC_POINT_point2oct( + group, public_key, EC_KEY_get_conv_form(x), NULL, 0, ctx); + if (pub_key_bytes_len == 0) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + pub_key_bytes = OPENSSL_malloc(pub_key_bytes_len); + if (pub_key_bytes == NULL) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + pub_key_bytes_len = + EC_POINT_point2oct(group, public_key, EC_KEY_get_conv_form(x), + pub_key_bytes, pub_key_bytes_len, ctx); + if (pub_key_bytes_len == 0) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + buf_len = pub_key_bytes_len; + } + } + + if (ktype == 2) { + priv_key = EC_KEY_get0_private_key(x); + if (priv_key && (i = (size_t)BN_num_bytes(priv_key)) > buf_len) { + buf_len = i; + } + } else { + priv_key = NULL; + } + + if (ktype > 0) { + buf_len += 10; + if ((buffer = OPENSSL_malloc(buf_len)) == NULL) { + reason = ERR_R_MALLOC_FAILURE; + goto err; + } + } + if (ktype == 2) { + ecstr = "Private-Key"; + } else if (ktype == 1) { + ecstr = "Public-Key"; + } else { + ecstr = "ECDSA-Parameters"; + } + + if (!BIO_indent(bp, off, 128)) { + goto err; + } + order = BN_new(); + if (order == NULL || !EC_GROUP_get_order(group, order, NULL) || + BIO_printf(bp, "%s: (%d bit)\n", ecstr, BN_num_bits(order)) <= 0) { + goto err; + } + + if ((priv_key != NULL) && + !ASN1_bn_print(bp, "priv:", priv_key, buffer, off)) { + goto err; + } + if (pub_key_bytes != NULL) { + BIO_hexdump(bp, pub_key_bytes, pub_key_bytes_len, off); + } + /* TODO(fork): implement */ + /* + if (!ECPKParameters_print(bp, group, off)) + goto err; */ + ret = 1; + +err: + if (!ret) { + OPENSSL_PUT_ERROR(EVP, reason); + } + OPENSSL_free(pub_key_bytes); + BN_free(order); + BN_CTX_free(ctx); + OPENSSL_free(buffer); + return ret; +} + +static int eckey_param_decode(EVP_PKEY *pkey, const uint8_t **pder, + int derlen) { + EC_KEY *eckey; + if (!(eckey = d2i_ECParameters(NULL, pder, derlen))) { + OPENSSL_PUT_ERROR(EVP, ERR_R_EC_LIB); + return 0; + } + EVP_PKEY_assign_EC_KEY(pkey, eckey); + return 1; +} + +static int eckey_param_encode(const EVP_PKEY *pkey, uint8_t **pder) { + return i2d_ECParameters(pkey->pkey.ec, pder); +} + +static int eckey_param_print(BIO *bp, const EVP_PKEY *pkey, int indent, + ASN1_PCTX *ctx) { + return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 0); +} + +static int eckey_pub_print(BIO *bp, const EVP_PKEY *pkey, int indent, + ASN1_PCTX *ctx) { + return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 1); +} + + +static int eckey_priv_print(BIO *bp, const EVP_PKEY *pkey, int indent, + ASN1_PCTX *ctx) { + return do_EC_KEY_print(bp, pkey->pkey.ec, indent, 2); +} + +static int eckey_opaque(const EVP_PKEY *pkey) { + return EC_KEY_is_opaque(pkey->pkey.ec); +} + +static int old_ec_priv_decode(EVP_PKEY *pkey, const uint8_t **pder, + int derlen) { + EC_KEY *ec; + if (!(ec = d2i_ECPrivateKey(NULL, pder, derlen))) { + OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); + return 0; + } + EVP_PKEY_assign_EC_KEY(pkey, ec); + return 1; +} + +static int old_ec_priv_encode(const EVP_PKEY *pkey, uint8_t **pder) { + return i2d_ECPrivateKey(pkey->pkey.ec, pder); +} + +const EVP_PKEY_ASN1_METHOD ec_asn1_meth = { + EVP_PKEY_EC, + EVP_PKEY_EC, + 0, + "EC", + + eckey_pub_decode, + eckey_pub_encode, + eckey_pub_cmp, + eckey_pub_print, + + eckey_priv_decode, + eckey_priv_encode, + eckey_priv_print, + + eckey_opaque, + 0 /* pkey_supports_digest */, + + int_ec_size, + ec_bits, + + eckey_param_decode, + eckey_param_encode, + ec_missing_parameters, + ec_copy_parameters, + ec_cmp_parameters, + eckey_param_print, + 0, + + int_ec_free, + old_ec_priv_decode, + old_ec_priv_encode +}; -- cgit v1.2.3