/src/boringssl/crypto/evp/evp.c

Source (jump to first uncovered line)
/* 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 <assert.h>
#include <string.h>

#include <openssl/dsa.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/mem.h>
#include <openssl/nid.h>
#include <openssl/rsa.h>
#include <openssl/thread.h>

#include "internal.h"
#include "../internal.h"


// Node depends on |EVP_R_NOT_XOF_OR_INVALID_LENGTH|.
//
// TODO(davidben): Fix Node to not touch the error queue itself and remove this.
OPENSSL_DECLARE_ERROR_REASON(EVP, NOT_XOF_OR_INVALID_LENGTH)

// The HPKE module uses the EVP error namespace, but it lives in another
// directory.
OPENSSL_DECLARE_ERROR_REASON(EVP, EMPTY_PSK)

EVP_PKEY *EVP_PKEY_new(void) {
  EVP_PKEY *ret;

  ret = OPENSSL_malloc(sizeof(EVP_PKEY));
  if (ret == NULL) {
    return NULL;
  }

  OPENSSL_memset(ret, 0, sizeof(EVP_PKEY));
  ret->type = EVP_PKEY_NONE;
  ret->references = 1;

  return ret;
}

static void free_it(EVP_PKEY *pkey) {
  if (pkey->ameth && pkey->ameth->pkey_free) {
    pkey->ameth->pkey_free(pkey);
    pkey->pkey = NULL;
    pkey->type = EVP_PKEY_NONE;
  }
}

void EVP_PKEY_free(EVP_PKEY *pkey) {
  if (pkey == NULL) {
    return;
  }

  if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) {
    return;
  }

  free_it(pkey);
  OPENSSL_free(pkey);
}

int EVP_PKEY_up_ref(EVP_PKEY *pkey) {
  CRYPTO_refcount_inc(&pkey->references);
  return 1;
}

int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) {
  if (pkey->ameth && pkey->ameth->pkey_opaque) {
    return pkey->ameth->pkey_opaque(pkey);
  }
  return 0;
}

int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) {
  if (a->type != b->type) {
    return -1;
  }

  if (a->ameth) {
    int ret;
    // Compare parameters if the algorithm has them
    if (a->ameth->param_cmp) {
      ret = a->ameth->param_cmp(a, b);
      if (ret <= 0) {
        return ret;
      }
    }

    if (a->ameth->pub_cmp) {
      return a->ameth->pub_cmp(a, b);
    }
  }

  return -2;
}

int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) {
  if (to->type == EVP_PKEY_NONE) {
    if (!EVP_PKEY_set_type(to, from->type)) {
      return 0;
    }
  } else if (to->type != from->type) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
    return 0;
  }

  if (EVP_PKEY_missing_parameters(from)) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
    return 0;
  }

  // Once set, parameters may not change.
  if (!EVP_PKEY_missing_parameters(to)) {
    if (EVP_PKEY_cmp_parameters(to, from) == 1) {
      return 1;
    }
    OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
    return 0;
  }

  if (from->ameth && from->ameth->param_copy) {
    return from->ameth->param_copy(to, from);
  }

  // TODO(https://crbug.com/boringssl/536): If the algorithm takes no
  // parameters, copying them should vacuously succeed.
  return 0;
}

int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) {
  if (pkey->ameth && pkey->ameth->param_missing) {
    return pkey->ameth->param_missing(pkey);
  }
  return 0;
}

int EVP_PKEY_size(const EVP_PKEY *pkey) {
  if (pkey && pkey->ameth && pkey->ameth->pkey_size) {
    return pkey->ameth->pkey_size(pkey);
  }
  return 0;
}

int EVP_PKEY_bits(const EVP_PKEY *pkey) {
  if (pkey && pkey->ameth && pkey->ameth->pkey_bits) {
    return pkey->ameth->pkey_bits(pkey);
  }
  return 0;
}

int EVP_PKEY_id(const EVP_PKEY *pkey) {
  return pkey->type;
}

// evp_pkey_asn1_find returns the ASN.1 method table for the given |nid|, which
// should be one of the |EVP_PKEY_*| values. It returns NULL if |nid| is
// unknown.
static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) {
  switch (nid) {
    case EVP_PKEY_RSA:
      return &rsa_asn1_meth;
    case EVP_PKEY_EC:
      return &ec_asn1_meth;
    case EVP_PKEY_DSA:
      return &dsa_asn1_meth;
    case EVP_PKEY_ED25519:
      return &ed25519_asn1_meth;
    case EVP_PKEY_X25519:
      return &x25519_asn1_meth;
    default:
      return NULL;
  }
}

int EVP_PKEY_type(int nid) {
  const EVP_PKEY_ASN1_METHOD *meth = evp_pkey_asn1_find(nid);
  if (meth == NULL) {
    return NID_undef;
  }
  return meth->pkey_id;
}

int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) {
  if (EVP_PKEY_assign_RSA(pkey, key)) {
    RSA_up_ref(key);
    return 1;
  }
  return 0;
}

int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key) {
  return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key);
}

RSA *EVP_PKEY_get0_RSA(const EVP_PKEY *pkey) {
  if (pkey->type != EVP_PKEY_RSA) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_RSA_KEY);
    return NULL;
  }
  return pkey->pkey;
}

RSA *EVP_PKEY_get1_RSA(const EVP_PKEY *pkey) {
  RSA *rsa = EVP_PKEY_get0_RSA(pkey);
  if (rsa != NULL) {
    RSA_up_ref(rsa);
  }
  return rsa;
}

int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) {
  if (EVP_PKEY_assign_DSA(pkey, key)) {
    DSA_up_ref(key);
    return 1;
  }
  return 0;
}

int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key) {
  return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key);
}

DSA *EVP_PKEY_get0_DSA(const EVP_PKEY *pkey) {
  if (pkey->type != EVP_PKEY_DSA) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_A_DSA_KEY);
    return NULL;
  }
  return pkey->pkey;
}

DSA *EVP_PKEY_get1_DSA(const EVP_PKEY *pkey) {
  DSA *dsa = EVP_PKEY_get0_DSA(pkey);
  if (dsa != NULL) {
    DSA_up_ref(dsa);
  }
  return dsa;
}

int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
  if (EVP_PKEY_assign_EC_KEY(pkey, key)) {
    EC_KEY_up_ref(key);
    return 1;
  }
  return 0;
}

int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) {
  return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
}

EC_KEY *EVP_PKEY_get0_EC_KEY(const EVP_PKEY *pkey) {
  if (pkey->type != EVP_PKEY_EC) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_EC_KEY_KEY);
    return NULL;
  }
  return pkey->pkey;
}

EC_KEY *EVP_PKEY_get1_EC_KEY(const EVP_PKEY *pkey) {
  EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
  if (ec_key != NULL) {
    EC_KEY_up_ref(ec_key);
  }
  return ec_key;
}

DH *EVP_PKEY_get0_DH(const EVP_PKEY *pkey) { return NULL; }
DH *EVP_PKEY_get1_DH(const EVP_PKEY *pkey) { return NULL; }

int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) {
  if (!EVP_PKEY_set_type(pkey, type)) {
    return 0;
  }
  pkey->pkey = key;
  return key != NULL;
}

int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) {
  const EVP_PKEY_ASN1_METHOD *ameth;

  if (pkey && pkey->pkey) {
    free_it(pkey);
  }

  ameth = evp_pkey_asn1_find(type);
  if (ameth == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
    ERR_add_error_dataf("algorithm %d", type);
    return 0;
  }

  if (pkey) {
    pkey->ameth = ameth;
    pkey->type = pkey->ameth->pkey_id;
  }

  return 1;
}

EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused,
                                       const uint8_t *in, size_t len) {
  EVP_PKEY *ret = EVP_PKEY_new();
  if (ret == NULL ||
      !EVP_PKEY_set_type(ret, type)) {
    goto err;
  }

  if (ret->ameth->set_priv_raw == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    goto err;
  }

  if (!ret->ameth->set_priv_raw(ret, in, len)) {
    goto err;
  }

  return ret;

err:
  EVP_PKEY_free(ret);
  return NULL;
}

EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused,
                                      const uint8_t *in, size_t len) {
  EVP_PKEY *ret = EVP_PKEY_new();
  if (ret == NULL ||
      !EVP_PKEY_set_type(ret, type)) {
    goto err;
  }

  if (ret->ameth->set_pub_raw == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    goto err;
  }

  if (!ret->ameth->set_pub_raw(ret, in, len)) {
    goto err;
  }

  return ret;

err:
  EVP_PKEY_free(ret);
  return NULL;
}

int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, uint8_t *out,
                                 size_t *out_len) {
  if (pkey->ameth->get_priv_raw == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    return 0;
  }

  return pkey->ameth->get_priv_raw(pkey, out, out_len);
}

int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, uint8_t *out,
                                size_t *out_len) {
  if (pkey->ameth->get_pub_raw == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    return 0;
  }

  return pkey->ameth->get_pub_raw(pkey, out, out_len);
}

int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) {
  if (a->type != b->type) {
    return -1;
  }
  if (a->ameth && a->ameth->param_cmp) {
    return a->ameth->param_cmp(a, b);
  }
  // TODO(https://crbug.com/boringssl/536): If the algorithm doesn't use
  // parameters, they should compare as vacuously equal.
  return -2;
}

int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) {
  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0,
                           (void *)md);
}

int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) {
  return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD,
                           0, (void *)out_md);
}

void *EVP_PKEY_get0(const EVP_PKEY *pkey) {
  // Node references, but never calls this function, so for now we return NULL.
  // If other projects require complete support, call |EVP_PKEY_get0_RSA|, etc.,
  // rather than reading |pkey->pkey| directly. This avoids problems if our
  // internal representation does not match the type the caller expects from
  // OpenSSL.
  return NULL;
}

void OpenSSL_add_all_algorithms(void) {}

void OPENSSL_add_all_algorithms_conf(void) {}

void OpenSSL_add_all_ciphers(void) {}

void OpenSSL_add_all_digests(void) {}

void EVP_cleanup(void) {}

int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, const uint8_t *in,
                                   size_t len) {
  if (pkey->ameth->set1_tls_encodedpoint == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    return 0;
  }

  return pkey->ameth->set1_tls_encodedpoint(pkey, in, len);
}

size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey, uint8_t **out_ptr) {
  if (pkey->ameth->get1_tls_encodedpoint == NULL) {
    OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
    return 0;
  }

  return pkey->ameth->get1_tls_encodedpoint(pkey, out_ptr);
}

int EVP_PKEY_base_id(const EVP_PKEY *pkey) {
  // OpenSSL has two notions of key type because it supports multiple OIDs for
  // the same algorithm: NID_rsa vs NID_rsaEncryption and five distinct spelling
  // of DSA. We do not support these, so the base ID is simply the ID.
  return EVP_PKEY_id(pkey);
}

Coverage Report

Created: 2023-06-07 07:11

Line	Count	Source (jump to first uncovered line)
1		/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2		* All rights reserved.
3		*
4		* This package is an SSL implementation written
5		* by Eric Young (eay@cryptsoft.com).
6		* The implementation was written so as to conform with Netscapes SSL.
7		*
8		* This library is free for commercial and non-commercial use as long as
9		* the following conditions are aheared to. The following conditions
10		* apply to all code found in this distribution, be it the RC4, RSA,
11		* lhash, DES, etc., code; not just the SSL code. The SSL documentation
12		* included with this distribution is covered by the same copyright terms
13		* except that the holder is Tim Hudson (tjh@cryptsoft.com).
14		*
15		* Copyright remains Eric Young's, and as such any Copyright notices in
16		* the code are not to be removed.
17		* If this package is used in a product, Eric Young should be given attribution
18		* as the author of the parts of the library used.
19		* This can be in the form of a textual message at program startup or
20		* in documentation (online or textual) provided with the package.
21		*
22		* Redistribution and use in source and binary forms, with or without
23		* modification, are permitted provided that the following conditions
24		* are met:
25		* 1. Redistributions of source code must retain the copyright
26		* notice, this list of conditions and the following disclaimer.
27		* 2. Redistributions in binary form must reproduce the above copyright
28		* notice, this list of conditions and the following disclaimer in the
29		* documentation and/or other materials provided with the distribution.
30		* 3. All advertising materials mentioning features or use of this software
31		* must display the following acknowledgement:
32		* "This product includes cryptographic software written by
33		* Eric Young (eay@cryptsoft.com)"
34		* The word 'cryptographic' can be left out if the rouines from the library
35		* being used are not cryptographic related :-).
36		* 4. If you include any Windows specific code (or a derivative thereof) from
37		* the apps directory (application code) you must include an acknowledgement:
38		* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
39		*
40		* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43		* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
50		* SUCH DAMAGE.
51		*
52		* The licence and distribution terms for any publically available version or
53		* derivative of this code cannot be changed. i.e. this code cannot simply be
54		* copied and put under another distribution licence
55		* [including the GNU Public Licence.] */
56
57		#include <openssl/evp.h>
58
59		#include <assert.h>
60		#include <string.h>
61
62		#include <openssl/dsa.h>
63		#include <openssl/ec.h>
64		#include <openssl/err.h>
65		#include <openssl/mem.h>
66		#include <openssl/nid.h>
67		#include <openssl/rsa.h>
68		#include <openssl/thread.h>
69
70		#include "internal.h"
71		#include "../internal.h"
72
73
74		// Node depends on \|EVP_R_NOT_XOF_OR_INVALID_LENGTH\|.
75		//
76		// TODO(davidben): Fix Node to not touch the error queue itself and remove this.
77		OPENSSL_DECLARE_ERROR_REASON(EVP, NOT_XOF_OR_INVALID_LENGTH)
78
79		// The HPKE module uses the EVP error namespace, but it lives in another
80		// directory.
81		OPENSSL_DECLARE_ERROR_REASON(EVP, EMPTY_PSK)
82
83	1.23k	EVP_PKEY *EVP_PKEY_new(void) {
84	1.23k	EVP_PKEY *ret;
85
86	1.23k	ret = OPENSSL_malloc(sizeof(EVP_PKEY));
87	1.23k	if (ret == NULL) {
88	0	return NULL;
89	0	}
90
91	1.23k	OPENSSL_memset(ret, 0, sizeof(EVP_PKEY));
92	1.23k	ret->type = EVP_PKEY_NONE;
93	1.23k	ret->references = 1;
94
95	1.23k	return ret;
96	1.23k	}
97
98	1.23k	static void free_it(EVP_PKEY *pkey) {
99	1.23k	if (pkey->ameth && pkey->ameth->pkey_free) {
100	1.23k	pkey->ameth->pkey_free(pkey);
101	1.23k	pkey->pkey = NULL;
102	1.23k	pkey->type = EVP_PKEY_NONE;
103	1.23k	}
104	1.23k	}
105
106	10.5k	void EVP_PKEY_free(EVP_PKEY *pkey) {
107	10.5k	if (pkey == NULL) {
108	9.27k	return;
109	9.27k	}
110
111	1.23k	if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) {
112	0	return;
113	0	}
114
115	1.23k	free_it(pkey);
116	1.23k	OPENSSL_free(pkey);
117	1.23k	}
118
119	0	int EVP_PKEY_up_ref(EVP_PKEY *pkey) {
120	0	CRYPTO_refcount_inc(&pkey->references);
121	0	return 1;
122	0	}
123
124	0	int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) {
125	0	if (pkey->ameth && pkey->ameth->pkey_opaque) {
126	0	return pkey->ameth->pkey_opaque(pkey);
127	0	}
128	0	return 0;
129	0	}
130
131	0	int EVP_PKEY_cmp(const EVP_PKEY a, const EVP_PKEY b) {
132	0	if (a->type != b->type) {
133	0	return -1;
134	0	}
135
136	0	if (a->ameth) {
137	0	int ret;
138		// Compare parameters if the algorithm has them
139	0	if (a->ameth->param_cmp) {
140	0	ret = a->ameth->param_cmp(a, b);
141	0	if (ret <= 0) {
142	0	return ret;
143	0	}
144	0	}
145
146	0	if (a->ameth->pub_cmp) {
147	0	return a->ameth->pub_cmp(a, b);
148	0	}
149	0	}
150
151	0	return -2;
152	0	}
153
154	0	int EVP_PKEY_copy_parameters(EVP_PKEY to, const EVP_PKEY from) {
155	0	if (to->type == EVP_PKEY_NONE) {
156	0	if (!EVP_PKEY_set_type(to, from->type)) {
157	0	return 0;
158	0	}
159	0	} else if (to->type != from->type) {
160	0	OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
161	0	return 0;
162	0	}
163
164	0	if (EVP_PKEY_missing_parameters(from)) {
165	0	OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS);
166	0	return 0;
167	0	}
168
169		// Once set, parameters may not change.
170	0	if (!EVP_PKEY_missing_parameters(to)) {
171	0	if (EVP_PKEY_cmp_parameters(to, from) == 1) {
172	0	return 1;
173	0	}
174	0	OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
175	0	return 0;
176	0	}
177
178	0	if (from->ameth && from->ameth->param_copy) {
179	0	return from->ameth->param_copy(to, from);
180	0	}
181
182		// TODO(https://crbug.com/boringssl/536): If the algorithm takes no
183		// parameters, copying them should vacuously succeed.
184	0	return 0;
185	0	}
186
187	0	int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) {
188	0	if (pkey->ameth && pkey->ameth->param_missing) {
189	0	return pkey->ameth->param_missing(pkey);
190	0	}
191	0	return 0;
192	0	}
193
194	0	int EVP_PKEY_size(const EVP_PKEY *pkey) {
195	0	if (pkey && pkey->ameth && pkey->ameth->pkey_size) {
196	0	return pkey->ameth->pkey_size(pkey);
197	0	}
198	0	return 0;
199	0	}
200
201	0	int EVP_PKEY_bits(const EVP_PKEY *pkey) {
202	0	if (pkey && pkey->ameth && pkey->ameth->pkey_bits) {
203	0	return pkey->ameth->pkey_bits(pkey);
204	0	}
205	0	return 0;
206	0	}
207
208	0	int EVP_PKEY_id(const EVP_PKEY *pkey) {
209	0	return pkey->type;
210	0	}
211
212		// evp_pkey_asn1_find returns the ASN.1 method table for the given \|nid\|, which
213		// should be one of the \|EVP_PKEY_*\| values. It returns NULL if \|nid\| is
214		// unknown.
215	1.25k	static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) {
216	1.25k	switch (nid) {
217	477	case EVP_PKEY_RSA:
218	477	return &rsa_asn1_meth;
219	476	case EVP_PKEY_EC:
220	476	return &ec_asn1_meth;
221	164	case EVP_PKEY_DSA:
222	164	return &dsa_asn1_meth;
223	94	case EVP_PKEY_ED25519:
224	94	return &ed25519_asn1_meth;
225	41	case EVP_PKEY_X25519:
226	41	return &x25519_asn1_meth;
227	0	default:
228	0	return NULL;
229	1.25k	}
230	1.25k	}
231
232	0	int EVP_PKEY_type(int nid) {
233	0	const EVP_PKEY_ASN1_METHOD *meth = evp_pkey_asn1_find(nid);
234	0	if (meth == NULL) {
235	0	return NID_undef;
236	0	}
237	0	return meth->pkey_id;
238	0	}
239
240	0	int EVP_PKEY_set1_RSA(EVP_PKEY pkey, RSA key) {
241	0	if (EVP_PKEY_assign_RSA(pkey, key)) {
242	0	RSA_up_ref(key);
243	0	return 1;
244	0	}
245	0	return 0;
246	0	}
247
248	5	int EVP_PKEY_assign_RSA(EVP_PKEY pkey, RSA key) {
249	5	return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key);
250	5	}
251
252	0	RSA EVP_PKEY_get0_RSA(const EVP_PKEY pkey) {
253	0	if (pkey->type != EVP_PKEY_RSA) {
254	0	OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_RSA_KEY);
255	0	return NULL;
256	0	}
257	0	return pkey->pkey;
258	0	}
259
260	0	RSA EVP_PKEY_get1_RSA(const EVP_PKEY pkey) {
261	0	RSA *rsa = EVP_PKEY_get0_RSA(pkey);
262	0	if (rsa != NULL) {
263	0	RSA_up_ref(rsa);
264	0	}
265	0	return rsa;
266	0	}
267
268	0	int EVP_PKEY_set1_DSA(EVP_PKEY pkey, DSA key) {
269	0	if (EVP_PKEY_assign_DSA(pkey, key)) {
270	0	DSA_up_ref(key);
271	0	return 1;
272	0	}
273	0	return 0;
274	0	}
275
276	0	int EVP_PKEY_assign_DSA(EVP_PKEY pkey, DSA key) {
277	0	return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key);
278	0	}
279
280	0	DSA EVP_PKEY_get0_DSA(const EVP_PKEY pkey) {
281	0	if (pkey->type != EVP_PKEY_DSA) {
282	0	OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_A_DSA_KEY);
283	0	return NULL;
284	0	}
285	0	return pkey->pkey;
286	0	}
287
288	0	DSA EVP_PKEY_get1_DSA(const EVP_PKEY pkey) {
289	0	DSA *dsa = EVP_PKEY_get0_DSA(pkey);
290	0	if (dsa != NULL) {
291	0	DSA_up_ref(dsa);
292	0	}
293	0	return dsa;
294	0	}
295
296	0	int EVP_PKEY_set1_EC_KEY(EVP_PKEY pkey, EC_KEY key) {
297	0	if (EVP_PKEY_assign_EC_KEY(pkey, key)) {
298	0	EC_KEY_up_ref(key);
299	0	return 1;
300	0	}
301	0	return 0;
302	0	}
303
304	10	int EVP_PKEY_assign_EC_KEY(EVP_PKEY pkey, EC_KEY key) {
305	10	return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key);
306	10	}
307
308	0	EC_KEY EVP_PKEY_get0_EC_KEY(const EVP_PKEY pkey) {
309	0	if (pkey->type != EVP_PKEY_EC) {
310	0	OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_EC_KEY_KEY);
311	0	return NULL;
312	0	}
313	0	return pkey->pkey;
314	0	}
315
316	0	EC_KEY EVP_PKEY_get1_EC_KEY(const EVP_PKEY pkey) {
317	0	EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey);
318	0	if (ec_key != NULL) {
319	0	EC_KEY_up_ref(ec_key);
320	0	}
321	0	return ec_key;
322	0	}
323
324	0	DH EVP_PKEY_get0_DH(const EVP_PKEY pkey) { return NULL; }
325	0	DH EVP_PKEY_get1_DH(const EVP_PKEY pkey) { return NULL; }
326
327	15	int EVP_PKEY_assign(EVP_PKEY pkey, int type, void key) {
328	15	if (!EVP_PKEY_set_type(pkey, type)) {
329	0	return 0;
330	0	}
331	15	pkey->pkey = key;
332	15	return key != NULL;
333	15	}
334
335	1.25k	int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) {
336	1.25k	const EVP_PKEY_ASN1_METHOD *ameth;
337
338	1.25k	if (pkey && pkey->pkey) {
339	0	free_it(pkey);
340	0	}
341
342	1.25k	ameth = evp_pkey_asn1_find(type);
343	1.25k	if (ameth == NULL) {
344	0	OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
345	0	ERR_add_error_dataf("algorithm %d", type);
346	0	return 0;
347	0	}
348
349	1.25k	if (pkey) {
350	1.25k	pkey->ameth = ameth;
351	1.25k	pkey->type = pkey->ameth->pkey_id;
352	1.25k	}
353
354	1.25k	return 1;
355	1.25k	}
356
357		EVP_PKEY EVP_PKEY_new_raw_private_key(int type, ENGINE unused,
358	0	const uint8_t *in, size_t len) {
359	0	EVP_PKEY *ret = EVP_PKEY_new();
360	0	if (ret == NULL \|\|
361	0	!EVP_PKEY_set_type(ret, type)) {
362	0	goto err;
363	0	}
364
365	0	if (ret->ameth->set_priv_raw == NULL) {
366	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
367	0	goto err;
368	0	}
369
370	0	if (!ret->ameth->set_priv_raw(ret, in, len)) {
371	0	goto err;
372	0	}
373
374	0	return ret;
375
376	0	err:
377	0	EVP_PKEY_free(ret);
378	0	return NULL;
379	0	}
380
381		EVP_PKEY EVP_PKEY_new_raw_public_key(int type, ENGINE unused,
382	0	const uint8_t *in, size_t len) {
383	0	EVP_PKEY *ret = EVP_PKEY_new();
384	0	if (ret == NULL \|\|
385	0	!EVP_PKEY_set_type(ret, type)) {
386	0	goto err;
387	0	}
388
389	0	if (ret->ameth->set_pub_raw == NULL) {
390	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
391	0	goto err;
392	0	}
393
394	0	if (!ret->ameth->set_pub_raw(ret, in, len)) {
395	0	goto err;
396	0	}
397
398	0	return ret;
399
400	0	err:
401	0	EVP_PKEY_free(ret);
402	0	return NULL;
403	0	}
404
405		int EVP_PKEY_get_raw_private_key(const EVP_PKEY pkey, uint8_t out,
406	0	size_t *out_len) {
407	0	if (pkey->ameth->get_priv_raw == NULL) {
408	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
409	0	return 0;
410	0	}
411
412	0	return pkey->ameth->get_priv_raw(pkey, out, out_len);
413	0	}
414
415		int EVP_PKEY_get_raw_public_key(const EVP_PKEY pkey, uint8_t out,
416	0	size_t *out_len) {
417	0	if (pkey->ameth->get_pub_raw == NULL) {
418	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
419	0	return 0;
420	0	}
421
422	0	return pkey->ameth->get_pub_raw(pkey, out, out_len);
423	0	}
424
425	0	int EVP_PKEY_cmp_parameters(const EVP_PKEY a, const EVP_PKEY b) {
426	0	if (a->type != b->type) {
427	0	return -1;
428	0	}
429	0	if (a->ameth && a->ameth->param_cmp) {
430	0	return a->ameth->param_cmp(a, b);
431	0	}
432		// TODO(https://crbug.com/boringssl/536): If the algorithm doesn't use
433		// parameters, they should compare as vacuously equal.
434	0	return -2;
435	0	}
436
437	0	int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX ctx, const EVP_MD md) {
438	0	return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0,
439	0	(void *)md);
440	0	}
441
442	0	int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX ctx, const EVP_MD *out_md) {
443	0	return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD,
444	0	0, (void *)out_md);
445	0	}
446
447	0	void EVP_PKEY_get0(const EVP_PKEY pkey) {
448		// Node references, but never calls this function, so for now we return NULL.
449		// If other projects require complete support, call \|EVP_PKEY_get0_RSA\|, etc.,
450		// rather than reading \|pkey->pkey\| directly. This avoids problems if our
451		// internal representation does not match the type the caller expects from
452		// OpenSSL.
453	0	return NULL;
454	0	}
455
456	0	void OpenSSL_add_all_algorithms(void) {}
457
458	0	void OPENSSL_add_all_algorithms_conf(void) {}
459
460	0	void OpenSSL_add_all_ciphers(void) {}
461
462	0	void OpenSSL_add_all_digests(void) {}
463
464	0	void EVP_cleanup(void) {}
465
466		int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY pkey, const uint8_t in,
467	0	size_t len) {
468	0	if (pkey->ameth->set1_tls_encodedpoint == NULL) {
469	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
470	0	return 0;
471	0	}
472
473	0	return pkey->ameth->set1_tls_encodedpoint(pkey, in, len);
474	0	}
475
476	0	size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY pkey, uint8_t *out_ptr) {
477	0	if (pkey->ameth->get1_tls_encodedpoint == NULL) {
478	0	OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
479	0	return 0;
480	0	}
481
482	0	return pkey->ameth->get1_tls_encodedpoint(pkey, out_ptr);
483	0	}
484
485	0	int EVP_PKEY_base_id(const EVP_PKEY *pkey) {
486		// OpenSSL has two notions of key type because it supports multiple OIDs for
487		// the same algorithm: NID_rsa vs NID_rsaEncryption and five distinct spelling
488		// of DSA. We do not support these, so the base ID is simply the ID.
489	0	return EVP_PKEY_id(pkey);
490	0	}