+
/* crypto/ec/ec.h */
/*
* Originally written by Bodo Moeller for the OpenSSL project.
/* some values for the flags field */
# define EC_FLAG_NON_FIPS_ALLOW 0x1
# define EC_FLAG_FIPS_CHECKED 0x2
+# define EC_FLAG_COFACTOR_ECDH 0x1000
/** Creates a new EC_KEY object.
* \return EC_KEY object or NULL if an error occurred.
void EC_KEY_set_default_method(const EC_KEY_METHOD *meth);
EC_KEY *EC_KEY_new_method(ENGINE *engine);
+int ECDH_KDF_X9_62(unsigned char *out, size_t outlen,
+ const unsigned char *Z, size_t Zlen,
+ const unsigned char *sinfo, size_t sinfolen,
+ const EVP_MD *md);
+
+int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key,
+ EC_KEY *ecdh, void *(*KDF) (const void *in, size_t inlen,
+ void *out, size_t *outlen));
+
+typedef struct ECDSA_SIG_st ECDSA_SIG;
+
+/** Allocates and initialize a ECDSA_SIG structure
+ * \return pointer to a ECDSA_SIG structure or NULL if an error occurred
+ */
+ECDSA_SIG *ECDSA_SIG_new(void);
+
+/** frees a ECDSA_SIG structure
+ * \param sig pointer to the ECDSA_SIG structure
+ */
+void ECDSA_SIG_free(ECDSA_SIG *sig);
+
+/** DER encode content of ECDSA_SIG object (note: this function modifies *pp
+ * (*pp += length of the DER encoded signature)).
+ * \param sig pointer to the ECDSA_SIG object
+ * \param pp pointer to a unsigned char pointer for the output or NULL
+ * \return the length of the DER encoded ECDSA_SIG object or 0
+ */
+int i2d_ECDSA_SIG(const ECDSA_SIG *sig, unsigned char **pp);
+
+/** Decodes a DER encoded ECDSA signature (note: this function changes *pp
+ * (*pp += len)).
+ * \param sig pointer to ECDSA_SIG pointer (may be NULL)
+ * \param pp memory buffer with the DER encoded signature
+ * \param len length of the buffer
+ * \return pointer to the decoded ECDSA_SIG structure (or NULL)
+ */
+ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **sig, const unsigned char **pp, long len);
+
+/** Accessor for r and s fields of ECDSA_SIG
+ * \param sig pointer to ECDSA_SIG pointer
+ * \param pr pointer to BIGNUM pointer for r (may be NULL)
+ * \param ps pointer to BIGNUM pointer for s (may be NULL)
+ */
+void ECDSA_SIG_get0(BIGNUM **pr, BIGNUM **ps, ECDSA_SIG *sig);
+
+/** Precompute parts of the signing operation
+ * \param eckey EC_KEY object containing a private EC key
+ * \param ctx BN_CTX object (optional)
+ * \param kinv BIGNUM pointer for the inverse of k
+ * \param rp BIGNUM pointer for x coordinate of k * generator
+ * \return 1 on success and 0 otherwise
+ */
+int ECDSA_sign_setup(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
+
+/** Computes ECDSA signature of a given hash value using the supplied
+ * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value to sign
+ * \param dgstlen length of the hash value
+ * \param sig memory for the DER encoded created signature
+ * \param siglen pointer to the length of the returned signature
+ * \param eckey EC_KEY object containing a private EC key
+ * \return 1 on success and 0 otherwise
+ */
+int ECDSA_sign(int type, const unsigned char *dgst, int dgstlen,
+ unsigned char *sig, unsigned int *siglen, EC_KEY *eckey);
+
+/** Computes ECDSA signature of a given hash value using the supplied
+ * private key (note: sig must point to ECDSA_size(eckey) bytes of memory).
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value to sign
+ * \param dgstlen length of the hash value
+ * \param sig buffer to hold the DER encoded signature
+ * \param siglen pointer to the length of the returned signature
+ * \param kinv BIGNUM with a pre-computed inverse k (optional)
+ * \param rp BIGNUM with a pre-computed rp value (optioanl),
+ * see ECDSA_sign_setup
+ * \param eckey EC_KEY object containing a private EC key
+ * \return 1 on success and 0 otherwise
+ */
+int ECDSA_sign_ex(int type, const unsigned char *dgst, int dgstlen,
+ unsigned char *sig, unsigned int *siglen,
+ const BIGNUM *kinv, const BIGNUM *rp, EC_KEY *eckey);
+
+/** Verifies that the given signature is valid ECDSA signature
+ * of the supplied hash value using the specified public key.
+ * \param type this parameter is ignored
+ * \param dgst pointer to the hash value
+ * \param dgstlen length of the hash value
+ * \param sig pointer to the DER encoded signature
+ * \param siglen length of the DER encoded signature
+ * \param eckey EC_KEY object containing a public EC key
+ * \return 1 if the signature is valid, 0 if the signature is invalid
+ * and -1 on error
+ */
+int ECDSA_verify(int type, const unsigned char *dgst, int dgstlen,
+ const unsigned char *sig, int siglen, EC_KEY *eckey);
+
+/** Returns the maximum length of the DER encoded signature
+ * \param eckey EC_KEY object
+ * \return numbers of bytes required for the DER encoded signature
+ */
+int ECDSA_size(const EC_KEY *eckey);
+
# define ECParameters_dup(x) ASN1_dup_of(EC_KEY,i2d_ECParameters,d2i_ECParameters,x)
# ifndef __cplusplus
# define EC_F_DO_EC_KEY_PRINT 221
# define EC_F_ECDH_CMS_DECRYPT 238
# define EC_F_ECDH_CMS_SET_SHARED_INFO 239
+# define EC_F_ECDH_COMPUTE_KEY 246
+# define EC_F_ECDSA_DO_SIGN_EX 251
+# define EC_F_ECDSA_DO_VERIFY 252
+# define EC_F_ECDSA_SIGN_SETUP 248
# define EC_F_ECKEY_PARAM2TYPE 223
# define EC_F_ECKEY_PARAM_DECODE 212
# define EC_F_ECKEY_PRIV_DECODE 213
# define EC_F_NISTP521_PRE_COMP_NEW 237
# define EC_F_O2I_ECPUBLICKEY 152
# define EC_F_OLD_EC_PRIV_DECODE 222
+# define EC_F_OSSL_ECDH_COMPUTE_KEY 247
+# define EC_F_OSSL_ECDSA_SIGN_SIG 249
+# define EC_F_OSSL_ECDSA_VERIFY_SIG 250
# define EC_F_PKEY_EC_CTRL 197
# define EC_F_PKEY_EC_CTRL_STR 198
# define EC_F_PKEY_EC_DERIVE 217
/* Reason codes. */
# define EC_R_ASN1_ERROR 115
# define EC_R_ASN1_UNKNOWN_FIELD 116
+# define EC_R_BAD_SIGNATURE 156
# define EC_R_BIGNUM_OUT_OF_RANGE 144
# define EC_R_BUFFER_TOO_SMALL 100
# define EC_R_COORDINATES_OUT_OF_RANGE 146
# define EC_R_INVALID_PENTANOMIAL_BASIS 132
# define EC_R_INVALID_PRIVATE_KEY 123
# define EC_R_INVALID_TRINOMIAL_BASIS 137
+# define EC_R_KDF_FAILED 153
# define EC_R_KDF_PARAMETER_ERROR 148
# define EC_R_KEYS_NOT_SET 140
# define EC_R_MISSING_PARAMETERS 124
# define EC_R_MISSING_PRIVATE_KEY 125
+# define EC_R_NEED_NEW_SETUP_VALUES 157
# define EC_R_NOT_A_NIST_PRIME 135
# define EC_R_NOT_A_SUPPORTED_NIST_PRIME 136
# define EC_R_NOT_IMPLEMENTED 126
# define EC_R_NOT_INITIALIZED 111
# define EC_R_NO_FIELD_MOD 133
# define EC_R_NO_PARAMETERS_SET 139
+# define EC_R_NO_PRIVATE_VALUE 154
# define EC_R_OPERATION_NOT_SUPPORTED 152
# define EC_R_PASSED_NULL_PARAMETER 134
# define EC_R_PEER_KEY_ERROR 149
# define EC_R_PKPARAMETERS2GROUP_FAILURE 127
+# define EC_R_POINT_ARITHMETIC_FAILURE 155
# define EC_R_POINT_AT_INFINITY 106
# define EC_R_POINT_IS_NOT_ON_CURVE 107
+# define EC_R_RANDOM_NUMBER_GENERATION_FAILED 158
# define EC_R_SHARED_INFO_ERROR 150
# define EC_R_SLOT_FULL 108
# define EC_R_UNDEFINED_GENERATOR 113
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