Initial commit of BoringSSL for Android.

1 files changed, 574 insertions, 0 deletions

diff --git a/src/crypto/evp/p_ec_asn1.c b/src/crypto/evp/p_ec_asn1.c
new file mode 100644
index 0000000..48a175b
--- /dev/null
+++ b/src/crypto/evp/p_ec_asn1.c
@@ -0,0 +1,574 @@
+/* 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 <openssl/evp.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/bn.h>
+#include <openssl/ec.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+#include <openssl/obj.h>
+#include <openssl/x509.h>
+
+#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, eckey_param2type, EVP_R_MISSING_PARAMETERS);
+    return 0;
+  }
+
+  nid = EC_GROUP_get_curve_name(group);
+  if (nid == NID_undef) {
+    OPENSSL_PUT_ERROR(EVP, eckey_param2type, 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, eckey_pub_encode, 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, eckey_type2param, EVP_R_DECODE_ERROR);
+      goto err;
+    }
+  } else if (ptype == V_ASN1_OBJECT) {
+    ASN1_OBJECT *poid = pval;
+    EC_GROUP *group;
+
+    /* type == V_ASN1_OBJECT => the parameters are given
+     * by an asn1 OID */
+    eckey = EC_KEY_new();
+    if (eckey == NULL) {
+      OPENSSL_PUT_ERROR(EVP, eckey_type2param, ERR_R_MALLOC_FAILURE);
+      goto err;
+    }
+    group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(poid));
+    if (group == NULL) {
+      goto err;
+    }
+    if (EC_KEY_set_group(eckey, group) == 0) {
+      goto err;
+    }
+    EC_GROUP_free(group);
+  } else {
+    OPENSSL_PUT_ERROR(EVP, eckey_type2param, 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, eckey_pub_decode, ERR_R_EC_LIB);
+    return 0;
+  }
+
+  /* We have parameters now set public key */
+  if (!o2i_ECPublicKey(&eckey, &p, pklen)) {
+    OPENSSL_PUT_ERROR(EVP, eckey_pub_decode, 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, eckey_priv_decode, 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, eckey_priv_decode, 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, eckey_priv_decode, 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, eckey_priv_decode, 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, eckey_priv_decode, 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, eckey_priv_decode, 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, eckey_priv_encode, 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, eckey_priv_encode, 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, eckey_priv_encode, 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, eckey_priv_encode, 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)) {
+    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);
+  return EC_GROUP_cmp(group_a, group_b);
+}
+
+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;
+  if ((order = BN_new()) == NULL)
+    goto err;
+  if (!EC_GROUP_get_order(group, order, NULL))
+    goto err;
+  if (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, do_EC_KEY_print, reason);
+  if (pub_key_bytes)
+    OPENSSL_free(pub_key_bytes);
+  if (order)
+    BN_free(order);
+  if (ctx)
+    BN_CTX_free(ctx);
+  if (buffer != NULL)
+    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, eckey_param_decode, 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, old_ec_priv_decode, 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",
+  "OpenSSL EC algorithm",
+
+  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
+};