ref: 8bc69a872883224675a55db51ac8f60ab5ed9e5a
dir: /third_party/boringssl/src/crypto/evp/internal.h/
/* 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.] */
#ifndef OPENSSL_HEADER_EVP_INTERNAL_H
#define OPENSSL_HEADER_EVP_INTERNAL_H
#include <openssl/base.h>
#include <openssl/rsa.h>
#if defined(__cplusplus)
extern "C" {
#endif
struct evp_pkey_asn1_method_st {
int pkey_id;
uint8_t oid[9];
uint8_t oid_len;
// pub_decode decodes |params| and |key| as a SubjectPublicKeyInfo
// and writes the result into |out|. It returns one on success and zero on
// error. |params| is the AlgorithmIdentifier after the OBJECT IDENTIFIER
// type field, and |key| is the contents of the subjectPublicKey with the
// leading padding byte checked and removed. Although X.509 uses BIT STRINGs
// to represent SubjectPublicKeyInfo, every key type defined encodes the key
// as a byte string with the same conversion to BIT STRING.
int (*pub_decode)(EVP_PKEY *out, CBS *params, CBS *key);
// pub_encode encodes |key| as a SubjectPublicKeyInfo and appends the result
// to |out|. It returns one on success and zero on error.
int (*pub_encode)(CBB *out, const EVP_PKEY *key);
int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
// priv_decode decodes |params| and |key| as a PrivateKeyInfo and writes the
// result into |out|. It returns one on success and zero on error. |params| is
// the AlgorithmIdentifier after the OBJECT IDENTIFIER type field, and |key|
// is the contents of the OCTET STRING privateKey field.
int (*priv_decode)(EVP_PKEY *out, CBS *params, CBS *key);
// priv_encode encodes |key| as a PrivateKeyInfo and appends the result to
// |out|. It returns one on success and zero on error.
int (*priv_encode)(CBB *out, const EVP_PKEY *key);
int (*set_priv_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
int (*set_pub_raw)(EVP_PKEY *pkey, const uint8_t *in, size_t len);
int (*get_priv_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
int (*get_pub_raw)(const EVP_PKEY *pkey, uint8_t *out, size_t *out_len);
// pkey_opaque returns 1 if the |pk| is opaque. Opaque keys are backed by
// custom implementations which do not expose key material and parameters.
int (*pkey_opaque)(const EVP_PKEY *pk);
int (*pkey_size)(const EVP_PKEY *pk);
int (*pkey_bits)(const EVP_PKEY *pk);
int (*param_missing)(const EVP_PKEY *pk);
int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from);
int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b);
void (*pkey_free)(EVP_PKEY *pkey);
} /* EVP_PKEY_ASN1_METHOD */;
#define EVP_PKEY_OP_UNDEFINED 0
#define EVP_PKEY_OP_KEYGEN (1 << 2)
#define EVP_PKEY_OP_SIGN (1 << 3)
#define EVP_PKEY_OP_VERIFY (1 << 4)
#define EVP_PKEY_OP_VERIFYRECOVER (1 << 5)
#define EVP_PKEY_OP_ENCRYPT (1 << 6)
#define EVP_PKEY_OP_DECRYPT (1 << 7)
#define EVP_PKEY_OP_DERIVE (1 << 8)
#define EVP_PKEY_OP_PARAMGEN (1 << 9)
#define EVP_PKEY_OP_TYPE_SIG \
(EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY | EVP_PKEY_OP_VERIFYRECOVER)
#define EVP_PKEY_OP_TYPE_CRYPT (EVP_PKEY_OP_ENCRYPT | EVP_PKEY_OP_DECRYPT)
#define EVP_PKEY_OP_TYPE_NOGEN \
(EVP_PKEY_OP_SIG | EVP_PKEY_OP_CRYPT | EVP_PKEY_OP_DERIVE)
#define EVP_PKEY_OP_TYPE_GEN (EVP_PKEY_OP_KEYGEN | EVP_PKEY_OP_PARAMGEN)
// EVP_PKEY_CTX_ctrl performs |cmd| on |ctx|. The |keytype| and |optype|
// arguments can be -1 to specify that any type and operation are acceptable,
// otherwise |keytype| must match the type of |ctx| and the bits of |optype|
// must intersect the operation flags set on |ctx|.
//
// The |p1| and |p2| arguments depend on the value of |cmd|.
//
// It returns one on success and zero on error.
OPENSSL_EXPORT int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
int cmd, int p1, void *p2);
#define EVP_PKEY_CTRL_MD 1
#define EVP_PKEY_CTRL_GET_MD 2
// EVP_PKEY_CTRL_PEER_KEY is called with different values of |p1|:
// 0: Is called from |EVP_PKEY_derive_set_peer| and |p2| contains a peer key.
// If the return value is <= 0, the key is rejected.
// 1: Is called at the end of |EVP_PKEY_derive_set_peer| and |p2| contains a
// peer key. If the return value is <= 0, the key is rejected.
// 2: Is called with |p2| == NULL to test whether the peer's key was used.
// (EC)DH always return one in this case.
// 3: Is called with |p2| == NULL to set whether the peer's key was used.
// (EC)DH always return one in this case. This was only used for GOST.
#define EVP_PKEY_CTRL_PEER_KEY 3
// EVP_PKEY_ALG_CTRL is the base value from which key-type specific ctrl
// commands are numbered.
#define EVP_PKEY_ALG_CTRL 0x1000
#define EVP_PKEY_CTRL_RSA_PADDING (EVP_PKEY_ALG_CTRL + 1)
#define EVP_PKEY_CTRL_GET_RSA_PADDING (EVP_PKEY_ALG_CTRL + 2)
#define EVP_PKEY_CTRL_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 3)
#define EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN (EVP_PKEY_ALG_CTRL + 4)
#define EVP_PKEY_CTRL_RSA_KEYGEN_BITS (EVP_PKEY_ALG_CTRL + 5)
#define EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP (EVP_PKEY_ALG_CTRL + 6)
#define EVP_PKEY_CTRL_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 7)
#define EVP_PKEY_CTRL_GET_RSA_OAEP_MD (EVP_PKEY_ALG_CTRL + 8)
#define EVP_PKEY_CTRL_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 9)
#define EVP_PKEY_CTRL_GET_RSA_MGF1_MD (EVP_PKEY_ALG_CTRL + 10)
#define EVP_PKEY_CTRL_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 11)
#define EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL (EVP_PKEY_ALG_CTRL + 12)
#define EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID (EVP_PKEY_ALG_CTRL + 13)
struct evp_pkey_ctx_st {
// Method associated with this operation
const EVP_PKEY_METHOD *pmeth;
// Engine that implements this method or NULL if builtin
ENGINE *engine;
// Key: may be NULL
EVP_PKEY *pkey;
// Peer key for key agreement, may be NULL
EVP_PKEY *peerkey;
// operation contains one of the |EVP_PKEY_OP_*| values.
int operation;
// Algorithm specific data
void *data;
} /* EVP_PKEY_CTX */;
struct evp_pkey_method_st {
int pkey_id;
int (*init)(EVP_PKEY_CTX *ctx);
int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src);
void (*cleanup)(EVP_PKEY_CTX *ctx);
int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
int (*sign)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
const uint8_t *tbs, size_t tbslen);
int (*sign_message)(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *siglen,
const uint8_t *tbs, size_t tbslen);
int (*verify)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
const uint8_t *tbs, size_t tbslen);
int (*verify_message)(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t siglen,
const uint8_t *tbs, size_t tbslen);
int (*verify_recover)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
const uint8_t *sig, size_t sig_len);
int (*encrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
const uint8_t *in, size_t inlen);
int (*decrypt)(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
const uint8_t *in, size_t inlen);
int (*derive)(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *keylen);
int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey);
int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2);
} /* EVP_PKEY_METHOD */;
typedef struct {
union {
uint8_t priv[64];
struct {
// Shift the location of the public key to align with where it is in the
// private key representation.
uint8_t pad[32];
uint8_t value[32];
} pub;
} key;
char has_private;
} ED25519_KEY;
typedef struct {
uint8_t pub[32];
uint8_t priv[32];
char has_private;
} X25519_KEY;
extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD ec_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD ed25519_asn1_meth;
extern const EVP_PKEY_ASN1_METHOD x25519_asn1_meth;
extern const EVP_PKEY_METHOD rsa_pkey_meth;
extern const EVP_PKEY_METHOD ec_pkey_meth;
extern const EVP_PKEY_METHOD ed25519_pkey_meth;
extern const EVP_PKEY_METHOD x25519_pkey_meth;
#if defined(__cplusplus)
} // extern C
#endif
#endif // OPENSSL_HEADER_EVP_INTERNAL_H