/* 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 #if defined(__cplusplus) extern "C" { #endif /* These values are flags for EVP_PKEY_ASN1_METHOD.flags. */ /* ASN1_PKEY_SIGPARAM_NULL controls whether the default behavior of * EVP_DigestSignAlgorithm writes an explicit NULL parameter in the * AlgorithmIdentifier. */ #define ASN1_PKEY_SIGPARAM_NULL 0x1 /* evp_digest_sign_algorithm_result_t is the return value of the * digest_sign_algorithm function in EVP_PKEY_ASN1_METHOD. */ typedef enum { /* EVP_DIGEST_SIGN_ALGORITHM_ERROR signals an error. */ EVP_DIGEST_SIGN_ALGORITHM_ERROR = 0, /* EVP_DIGEST_SIGN_ALGORITHM_SUCCESS signals that the parameters were * serialized in the AlgorithmIdentifier. */ EVP_DIGEST_SIGN_ALGORITHM_SUCCESS = 1, /* EVP_DIGEST_SIGN_ALGORITHM_DEFAULT signals that the parameters are * serialized using the default behavior. */ EVP_DIGEST_SIGN_ALGORITHM_DEFAULT = 2, } evp_digest_sign_algorithm_result_t; struct evp_pkey_asn1_method_st { int pkey_id; unsigned long pkey_flags; const char *pem_str; /* 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); int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx); /* 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 (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx); /* 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); /* pkey_supports_digest returns one if |pkey| supports digests of * type |md|. This is intended for use with EVP_PKEYs backing custom * implementations which can't sign all digests. If null, it is * assumed that all digests are supported. */ int (*pkey_supports_digest)(const EVP_PKEY *pkey, const EVP_MD *md); 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); int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent, ASN1_PCTX *pctx); int (*sig_print)(BIO *out, const X509_ALGOR *sigalg, const ASN1_STRING *sig, int indent, ASN1_PCTX *pctx); void (*pkey_free)(EVP_PKEY *pkey); /* Legacy functions for old PEM */ int (*old_priv_decode)(EVP_PKEY *pkey, const uint8_t **pder, int derlen); /* Converting parameters to/from AlgorithmIdentifier (X509_ALGOR). */ int (*digest_verify_init_from_algorithm)(EVP_MD_CTX *ctx, X509_ALGOR *algor, EVP_PKEY *pkey); evp_digest_sign_algorithm_result_t (*digest_sign_algorithm)( EVP_MD_CTX *ctx, X509_ALGOR *algor); } /* 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_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_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) 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 (*verify)(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 (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2); } /* EVP_PKEY_METHOD */; 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_METHOD rsa_pkey_meth; extern const EVP_PKEY_METHOD ec_pkey_meth; #if defined(__cplusplus) } /* extern C */ #endif #endif /* OPENSSL_HEADER_EVP_INTERNAL_H */