692878a5f4
This is never exposed. Change-Id: I332bc45f724eb42d68a0839e72b21593d01005ee Reviewed-on: https://boringssl-review.googlesource.com/6847 Reviewed-by: Adam Langley <alangley@gmail.com>
267 lines
11 KiB
C
267 lines
11 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#ifndef OPENSSL_HEADER_EVP_INTERNAL_H
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#define OPENSSL_HEADER_EVP_INTERNAL_H
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#include <openssl/base.h>
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#if defined(__cplusplus)
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extern "C" {
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#endif
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/* These values are flags for EVP_PKEY_ASN1_METHOD.flags. */
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/* ASN1_PKEY_SIGPARAM_NULL controls whether the default behavior of
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* EVP_DigestSignAlgorithm writes an explicit NULL parameter in the
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* AlgorithmIdentifier. */
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#define ASN1_PKEY_SIGPARAM_NULL 0x1
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/* evp_digest_sign_algorithm_result_t is the return value of the
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* digest_sign_algorithm function in EVP_PKEY_ASN1_METHOD. */
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typedef enum {
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/* EVP_DIGEST_SIGN_ALGORITHM_ERROR signals an error. */
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EVP_DIGEST_SIGN_ALGORITHM_ERROR = 0,
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/* EVP_DIGEST_SIGN_ALGORITHM_SUCCESS signals that the parameters were
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* serialized in the AlgorithmIdentifier. */
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EVP_DIGEST_SIGN_ALGORITHM_SUCCESS = 1,
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/* EVP_DIGEST_SIGN_ALGORITHM_DEFAULT signals that the parameters are
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* serialized using the default behavior. */
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EVP_DIGEST_SIGN_ALGORITHM_DEFAULT = 2,
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} evp_digest_sign_algorithm_result_t;
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struct evp_pkey_asn1_method_st {
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int pkey_id;
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int pkey_base_id;
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unsigned long pkey_flags;
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const char *pem_str;
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int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub);
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int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk);
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int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
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int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx);
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int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf);
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int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk);
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int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx);
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/* pkey_opaque returns 1 if the |pk| is opaque. Opaque keys are backed by
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* custom implementations which do not expose key material and parameters.*/
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int (*pkey_opaque)(const EVP_PKEY *pk);
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/* pkey_supports_digest returns one if |pkey| supports digests of
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* type |md|. This is intended for use with EVP_PKEYs backing custom
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* implementations which can't sign all digests. If null, it is
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* assumed that all digests are supported. */
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int (*pkey_supports_digest)(const EVP_PKEY *pkey, const EVP_MD *md);
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int (*pkey_size)(const EVP_PKEY *pk);
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int (*pkey_bits)(const EVP_PKEY *pk);
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int (*param_decode)(EVP_PKEY *pkey, const uint8_t **pder, int derlen);
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int (*param_encode)(const EVP_PKEY *pkey, uint8_t **pder);
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int (*param_missing)(const EVP_PKEY *pk);
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int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from);
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int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
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int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent,
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ASN1_PCTX *pctx);
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int (*sig_print)(BIO *out, const X509_ALGOR *sigalg, const ASN1_STRING *sig,
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int indent, ASN1_PCTX *pctx);
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void (*pkey_free)(EVP_PKEY *pkey);
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/* Legacy functions for old PEM */
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int (*old_priv_decode)(EVP_PKEY *pkey, const uint8_t **pder,
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int derlen);
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int (*old_priv_encode)(const EVP_PKEY *pkey, uint8_t **pder);
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/* Converting parameters to/from AlgorithmIdentifier (X509_ALGOR). */
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int (*digest_verify_init_from_algorithm)(EVP_MD_CTX *ctx,
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X509_ALGOR *algor,
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EVP_PKEY *pkey);
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evp_digest_sign_algorithm_result_t (*digest_sign_algorithm)(
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EVP_MD_CTX *ctx,
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X509_ALGOR *algor);
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} /* EVP_PKEY_ASN1_METHOD */;
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#define EVP_PKEY_OP_UNDEFINED 0
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#define EVP_PKEY_OP_KEYGEN (1 << 2)
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#define EVP_PKEY_OP_SIGN (1 << 3)
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#define EVP_PKEY_OP_VERIFY (1 << 4)
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#define EVP_PKEY_OP_VERIFYRECOVER (1 << 5)
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#define EVP_PKEY_OP_ENCRYPT (1 << 6)
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#define EVP_PKEY_OP_DECRYPT (1 << 7)
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#define EVP_PKEY_OP_DERIVE (1 << 8)
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#define EVP_PKEY_OP_TYPE_SIG \
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(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER)
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#define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
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#define EVP_PKEY_OP_TYPE_NOGEN \
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(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
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#define EVP_PKEY_OP_TYPE_GEN EVP_PKEY_OP_KEYGEN
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/* EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|
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* arguments can be -1 to specify that any type and operation are acceptable,
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* otherwise |keytype| must match the type of |ctx| and the bits of |optype|
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* must intersect the operation flags set on |ctx|.
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*
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* The |p1| and |p2| arguments depend on the value of |cmd|.
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*
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* It returns one on success and zero on error. */
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OPENSSL_EXPORT int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
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int cmd, int p1, void *p2);
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#define EVP_PKEY_CTRL_MD 1
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#define EVP_PKEY_CTRL_GET_MD 2
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/* EVP_PKEY_CTRL_PEER_KEY is called with different values of |p1|:
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* 0: Is called from |EVP_PKEY_derive_set_peer| and |p2| contains a peer key.
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* If the return value is <= 0, the key is rejected.
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* 1: Is called at the end of |EVP_PKEY_derive_set_peer| and |p2| contains a
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* peer key. If the return value is <= 0, the key is rejected.
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* 2: Is called with |p2| == NULL to test whether the peer's key was used.
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* (EC)DH always return one in this case.
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* 3: Is called with |p2| == NULL to set whether the peer's key was used.
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* (EC)DH always return one in this case. This was only used for GOST. */
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#define EVP_PKEY_CTRL_PEER_KEY 3
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/* EVP_PKEY_ALG_CTRL is the base value from which key-type specific ctrl
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* commands are numbered. */
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#define EVP_PKEY_ALG_CTRL 0x1000
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#define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
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#define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 2)
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#define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 3)
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#define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 4)
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#define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 5)
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#define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 6)
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#define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 7)
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#define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 8)
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#define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 9)
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#define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 10)
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#define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 11)
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#define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
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struct evp_pkey_ctx_st {
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/* Method associated with this operation */
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const EVP_PKEY_METHOD *pmeth;
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/* Engine that implements this method or NULL if builtin */
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ENGINE *engine;
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/* Key: may be NULL */
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EVP_PKEY *pkey;
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/* Peer key for key agreement, may be NULL */
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EVP_PKEY *peerkey;
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/* operation contains one of the |EVP_PKEY_OP_*| values. */
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int operation;
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/* Algorithm specific data */
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void *data;
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/* Application specific data */
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void *app_data;
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} /* EVP_PKEY_CTX */;
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struct evp_pkey_method_st {
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int pkey_id;
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int (*init)(EVP_PKEY_CTX *ctx);
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int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
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void (*cleanup)(EVP_PKEY_CTX *ctx);
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int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
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int (*sign)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
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const uint8_t *tbs, size_t tbslen);
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int (*verify)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
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const uint8_t *tbs, size_t tbslen);
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int (*verify_recover)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
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const uint8_t *sig, size_t sig_len);
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int (*encrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
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const uint8_t *in, size_t inlen);
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int (*decrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
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const uint8_t *in, size_t inlen);
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int (*derive)(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *keylen);
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int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
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} /* EVP_PKEY_METHOD */;
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extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
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extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
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extern const EVP_PKEY_METHOD rsa_pkey_meth;
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extern const EVP_PKEY_METHOD ec_pkey_meth;
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#if defined(__cplusplus)
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} /* extern C */
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#endif
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#endif /* OPENSSL_HEADER_EVP_INTERNAL_H */
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