/* crypto/ecdsa/ecdsa.h */
+/**
+ * \file crypto/ecdsa/ecdsa.h Include file for the OpenSSL ECDSA functions
+ * \author Written by Nils Larsch for the OpenSSL project
+ */
/* ====================================================================
- * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved.
+ * Copyright (c) 2000-2003 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#ifndef HEADER_ECDSA_H
#define HEADER_ECDSA_H
+#include <openssl/opensslconf.h>
+
#ifdef OPENSSL_NO_ECDSA
#error ECDSA is disabled.
#endif
-#ifndef OPENSSL_NO_BIO
-#include <openssl/bio.h>
-#endif
-#include <openssl/bn.h>
#include <openssl/ec.h>
-#include <openssl/crypto.h>
#include <openssl/ossl_typ.h>
-#include <openssl/asn1.h>
-#include <openssl/asn1t.h>
+#ifndef OPENSSL_NO_DEPRECATED
+#include <openssl/bn.h>
+#endif
#ifdef __cplusplus
extern "C" {
#endif
-typedef struct ecdsa_st ECDSA;
+/* Already defined in ossl_typ.h */
+/* typedef struct ecdsa_method ECDSA_METHOD; */
typedef struct ECDSA_SIG_st
-{
+ {
BIGNUM *r;
BIGNUM *s;
-} ECDSA_SIG;
+ } ECDSA_SIG;
-typedef struct ecdsa_method
-{
+struct ecdsa_method
+ {
const char *name;
- ECDSA_SIG *(*ecdsa_do_sign)(const unsigned char *dgst, int dgst_len, ECDSA *ecdsa);
- int (*ecdsa_sign_setup)(ECDSA *ecdsa, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **r);
- int (*ecdsa_do_verify)(const unsigned char *dgst, int dgst_len, ECDSA_SIG *sig, ECDSA *ecdsa);
- int (*init)(ECDSA *ecdsa);
- int (*finish)(ECDSA *ecdsa);
+ ECDSA_SIG *(*ecdsa_do_sign)(const unsigned char *dgst, int dgst_len,
+ EC_KEY *eckey);
+ int (*ecdsa_sign_setup)(EC_KEY *eckey, BN_CTX *ctx, BIGNUM **kinv,
+ BIGNUM **r);
+ int (*ecdsa_do_verify)(const unsigned char *dgst, int dgst_len,
+ ECDSA_SIG *sig, EC_KEY *eckey);
+#if 0
+ int (*init)(EC_KEY *eckey);
+ int (*finish)(EC_KEY *eckey);
+#endif
int flags;
char *app_data;
-} ECDSA_METHOD;
-
-#define ECDSA_FLAG_NAMED_CURVE 1
-#define ECDSA_FLAG_IMPLICITLYCA 2
-
-struct ecdsa_st
-{
- int version;
- point_conversion_form_t conversion_form;
+ };
+
+typedef struct ecdsa_data_st {
+ /* EC_KEY_METH_DATA part */
+ int (*init)(EC_KEY *);
+ void (*finish)(EC_KEY *);
+ /* method (ECDSA) specific part */
+ BIGNUM *kinv; /* signing pre-calc */
+ BIGNUM *r; /* signing pre-calc */
+ ENGINE *engine;
+ int flags;
+ const ECDSA_METHOD *meth;
+ CRYPTO_EX_DATA ex_data;
+} ECDSA_DATA;
- EC_GROUP *group;
+/** ECDSA_SIG *ECDSA_SIG_new(void)
+ * 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);
- EC_POINT *pub_key;
- BIGNUM *priv_key;
+/** ECDSA_SIG_free
+ * frees a ECDSA_SIG structure
+ * \param a pointer to the ECDSA_SIG structure
+ */
+void ECDSA_SIG_free(ECDSA_SIG *a);
- BIGNUM *kinv; /* signing pre-calc */
- BIGNUM *r; /* signing pre-calc */
+/** i2d_ECDSA_SIG
+ * DER encode content of ECDSA_SIG object (note: this function modifies *pp
+ * (*pp += length of the DER encoded signature)).
+ * \param a 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 *a, unsigned char **pp);
- unsigned char *seed; /* seed for curve generation */
- unsigned int seed_len;
+/** d2i_ECDSA_SIG
+ * decodes a DER encoded ECDSA signature (note: this function changes *pp
+ * (*pp += len)).
+ * \param v pointer to ECDSA_SIG pointer (may be NULL)
+ * \param pp buffer with the DER encoded signature
+ * \param len bufferlength
+ * \return pointer to the decoded ECDSA_SIG structure (or NULL)
+ */
+ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **v, const unsigned char **pp, long len);
- int parameter_flags;
+/** ECDSA_DATA_new
+ * creates a new ECDSA_DATA object
+ * \return pointer to a newly allocated (and initialized) ECDSA_DATA object
+ */
+ECDSA_DATA *ECDSA_DATA_new(void);
- int references;
- int flags;
- CRYPTO_EX_DATA ex_data;
- const ECDSA_METHOD *meth;
- struct engine_st *engine;
-};
+/** ECDSA_DATA_new_method
+ * creates a new ECDSA_DATA object using a specified ENGINE
+ * \param eng pointer to a ENGINE structure
+ * \return pointer to a newly allocated (and initialized) ECDSA_DATA object
+ */
+ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *eng);
-ECDSA_SIG *ECDSA_SIG_new(void);
-void ECDSA_SIG_free(ECDSA_SIG *a);
-int i2d_ECDSA_SIG(const ECDSA_SIG *a, unsigned char **pp);
-ECDSA_SIG *d2i_ECDSA_SIG(ECDSA_SIG **v, const unsigned char **pp, long length);
+/** ECDSA_DATA_free
+ * frees ECDSA_DATA structure
+ * \param data pointer to a ECDSA_DATA structure
+ */
+void ECDSA_DATA_free(ECDSA_DATA *data);
-ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst, int dgst_len, ECDSA *ecdsa);
-int ECDSA_do_verify(const unsigned char *dgst, int dgst_len, ECDSA_SIG *sig, ECDSA* ecdsa);
-int ECDSA_generate_key(ECDSA *ecdsa);
-int ECDSA_check_key(ECDSA *ecdsa);
+/** ecdsa_check
+ * checks whether ECKEY->meth_data is a pointer to a ECDSA_DATA structure
+ * and if not it removes the old meth_data and creates a ECDSA_DATA structure.
+ * \param eckey pointer to a EC_KEY object
+ * \return pointer to a ECDSA_DATA structure
+ */
+ECDSA_DATA *ecdsa_check(EC_KEY *eckey);
+
+/** ECDSA_do_sign
+ * computes the ECDSA signature of the given hash value using
+ * the supplied private key and returns the created signature.
+ * \param dgst pointer to the hash value
+ * \param dgst_len length of the hash value
+ * \param eckey pointer to the EC_KEY object containing a private EC key
+ * \return pointer to a ECDSA_SIG structure or NULL
+ */
+ECDSA_SIG *ECDSA_do_sign(const unsigned char *dgst,int dgst_len,EC_KEY *eckey);
+
+/** ECDSA_do_verify
+ * verifies that the supplied signature is a valid ECDSA
+ * signature of the supplied hash value using the supplied public key.
+ * \param dgst pointer to the hash value
+ * \param dgst_len length of the hash value
+ * \param sig pointer to the ECDSA_SIG structure
+ * \param eckey pointer to the 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_do_verify(const unsigned char *dgst, int dgst_len, ECDSA_SIG
+ *sig, EC_KEY* eckey);
const ECDSA_METHOD *ECDSA_OpenSSL(void);
-void ECDSA_set_default_method(const ECDSA_METHOD *);
+/** ECDSA_set_default_method
+ * sets the default ECDSA method
+ * \param meth the new default ECDSA_METHOD
+ */
+void ECDSA_set_default_method(const ECDSA_METHOD *meth);
+
+/** ECDSA_get_default_method
+ * returns the default ECDSA method
+ * \return pointer to ECDSA_METHOD structure containing the default method
+ */
const ECDSA_METHOD *ECDSA_get_default_method(void);
-int ECDSA_set_method(ECDSA *, const ECDSA_METHOD *);
-
-ECDSA *ECDSA_new(void);
-ECDSA *ECDSA_new_method(ENGINE *engine);
-int ECDSA_size(const ECDSA *);
-int ECDSA_sign_setup(ECDSA *ecdsa, BN_CTX *ctx, BIGNUM **kinv, BIGNUM **rp);
-int ECDSA_sign(int type, const unsigned char *dgst, int dgst_len, unsigned char *sig,
- unsigned int *siglen, ECDSA *ecdsa);
-int ECDSA_verify(int type, const unsigned char *dgst, int dgst_len, const unsigned char *sig,
- const int sig_len, ECDSA *ecdsa);
-int ECDSA_up_ref(ECDSA *ecdsa);
-void ECDSA_free(ECDSA *a);
-int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
-int ECDSA_set_ex_data(ECDSA *d, int idx, void *arg);
-void *ECDSA_get_ex_data(ECDSA *d, int idx);
-
-#ifndef OPENSSL_NO_BIO
-int ECDSAParameters_print(BIO *bp, const ECDSA *x);
-int ECDSA_print(BIO *bp, const ECDSA *x, int off);
-#endif
-#ifndef OPENSSL_NO_FP_API
-int ECDSAParameters_print_fp(FILE *fp, const ECDSA *x);
-int ECDSA_print_fp(FILE *fp, const ECDSA *x, int off);
-#endif
-
-void ECDSA_set_parameter_flags(ECDSA *, int);
-int ECDSA_get_parameter_flags(const ECDSA*);
-
-/* The ECDSA_{set|get}_conversion_type() functions set/get the
- * conversion form for ec-points (see ec.h) in a ECDSA-structure */
-void ECDSA_set_conversion_form(ECDSA *, const point_conversion_form_t);
-point_conversion_form_t ECDSA_get_conversion_form(const ECDSA *);
-/* The ECDSA_{set|get}_default_conversion_form() functions set/get the
- * default conversion form */
-void ECDSA_set_default_conversion_form(const point_conversion_form_t);
-point_conversion_form_t ECDSA_get_default_conversion_form(void);
-
-/* the basic de- and encode functions ( see ecs_asn1.c ) */
-ECDSA *d2i_ECDSAParameters(ECDSA **a, const unsigned char **in, long len);
-int i2d_ECDSAParameters(ECDSA *a, unsigned char **out);
-
-ECDSA *d2i_ECDSAPrivateKey(ECDSA **a, const unsigned char **in, long len);
-int i2d_ECDSAPrivateKey(ECDSA *a, unsigned char **out);
-
-/* ECDSAPublicKey_set_octet_string() sets the public key in the ECDSA-structure.
- * (*a) must be a pointer to a ECDSA-structure with (*a)->group not zero
- * (e.g. a ECDSA-structure with a valid EC_GROUP-structure) */
-ECDSA *ECDSAPublicKey_set_octet_string(ECDSA **a, const unsigned char **in, long len);
-/* ECDSAPublicKey_get_octet_string() returns the length of the octet string encoding
- * of the public key. If out != NULL then the function returns in *out
- * a pointer to the octet string */
-int ECDSAPublicKey_get_octet_string(ECDSA *a, unsigned char **out);
-
-
-#define ECDSAParameters_dup(x) (ECDSA *)ASN1_dup((int (*)())i2d_ECDSAParameters, \
- (char *(*)())d2i_ECDSAParameters,(char *)(x))
-#define d2i_ECDSAParameters_fp(fp,x) (ECDSA *)ASN1_d2i_fp((char *(*)())ECDSA_new, \
- (char *(*)())d2i_ECDSAParameters,(fp),(unsigned char **)(x))
-#define i2d_ECDSAParameters_fp(fp,x) ASN1_i2d_fp(i2d_ECDSAParameters,(fp), \
- (unsigned char *)(x))
-#define d2i_ECDSAParameters_bio(bp,x) (ECDSA *)ASN1_d2i_bio((char *(*)())ECDSA_new, \
- (char *(*)())d2i_ECDSAParameters,(bp),(unsigned char **)(x))
-#define i2d_ECDSAParameters_bio(bp,x) ASN1_i2d_bio(i2d_ECDSAParameters,(bp), \
- (unsigned char *)(x))
+
+/** ECDSA_set_method
+ * sets method to be used for the ECDSA operations
+ * \param eckey pointer to the EC_KEY object
+ * \param meth pointer to the new method
+ * \return 1 on success and 0 otherwise
+ */
+int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth);
+
+/** ECDSA_size
+ * returns the maximum length of the DER encoded signature
+ * \param eckey pointer to a EC_KEY object
+ * \return numbers of bytes required for the DER encoded signature
+ */
+int ECDSA_size(const EC_KEY *eckey);
+
+/** ECDSA_sign_setup
+ * precompute parts of the signing operation (the computed values may be
+ * passed to ECDSA_DATA->kinv and ECDSA_DATA->r for a later signature
+ * computation).
+ * \param eckey pointer to the EC_KEY object containing a private EC key
+ * \param ctx pointer to a BN_CTX object (may be NULL)
+ * \param kinv pointer to a BIGNUM pointer for the inverse of k
+ * \param rp pointer to a 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);
+
+/** ECDSA_sign
+ * 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 eckey pointer to the 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);
+
+/** ECDSA_verify
+ * 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 pointer to the 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);
+
+/* the standard ex_data functions */
+int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new
+ *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
+int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg);
+void *ECDSA_get_ex_data(EC_KEY *d, int idx);
+
/* BEGIN ERROR CODES */
/* The following lines are auto generated by the script mkerr.pl. Any changes
/* Error codes for the ECDSA functions. */
/* Function codes. */
-#define ECDSA_F_D2I_ECDSAPARAMETERS 100
-#define ECDSA_F_D2I_ECDSAPRIVATEKEY 101
-#define ECDSA_F_ECDSAPARAMETERS_PRINT 102
-#define ECDSA_F_ECDSAPARAMETERS_PRINT_FP 103
-#define ECDSA_F_ECDSA_DO_SIGN 104
-#define ECDSA_F_ECDSA_DO_VERIFY 105
-#define ECDSA_F_ECDSA_GENERATE_KEY 106
-#define ECDSA_F_ECDSA_GET 107
-#define ECDSA_F_ECDSA_GET_CURVE_NID 120
-#define ECDSA_F_ECDSA_GET_ECDSA 121
-#define ECDSA_F_ECDSA_GET_EC_PARAMETERS 122
-#define ECDSA_F_ECDSA_GET_X9_62_CURVE 108
-#define ECDSA_F_ECDSA_GET_X9_62_EC_PARAMETERS 109
-#define ECDSA_F_ECDSA_GET_X9_62_FIELDID 110
-#define ECDSA_F_ECDSA_NEW 111
-#define ECDSA_F_ECDSA_PRINT 112
-#define ECDSA_F_ECDSA_PRINT_FP 113
-#define ECDSA_F_ECDSA_SET_GROUP_P 114
-#define ECDSA_F_ECDSA_SET_PRIME_GROUP 123
-#define ECDSA_F_ECDSA_SIGN_SETUP 115
-#define ECDSA_F_I2D_ECDSAPARAMETERS 116
-#define ECDSA_F_I2D_ECDSAPRIVATEKEY 117
-#define ECDSA_F_I2D_ECDSAPUBLICKEY 118
-#define ECDSA_F_SIG_CB 119
+#define ECDSA_F_ECDSA_DATA_NEW 100
+#define ECDSA_F_ECDSA_DO_SIGN 101
+#define ECDSA_F_ECDSA_DO_VERIFY 102
+#define ECDSA_F_ECDSA_SIGN_SETUP 103
/* Reason codes. */
#define ECDSA_R_BAD_SIGNATURE 100
-#define ECDSA_R_CAN_NOT_GET_GENERATOR 101
-#define ECDSA_R_D2I_ECDSAPRIVATEKEY_MISSING_PRIVATE_KEY 102
-#define ECDSA_R_D2I_ECDSA_PRIVATEKEY_FAILURE 103
-#define ECDSA_R_D2I_EC_PARAMETERS_FAILURE 133
-#define ECDSA_R_D2I_X9_62_EC_PARAMETERS_FAILURE 104
-#define ECDSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 105
-#define ECDSA_R_ECDSAPRIVATEKEY_NEW_FAILURE 106
-#define ECDSA_R_ECDSA_F_ECDSA_NEW 107
-#define ECDSA_R_ECDSA_GET_EC_PARAMETERS_FAILURE 134
-#define ECDSA_R_ECDSA_GET_FAILURE 108
-#define ECDSA_R_ECDSA_GET_X9_62_CURVE_FAILURE 109
-#define ECDSA_R_ECDSA_GET_X9_62_EC_PARAMETERS_FAILURE 110
-#define ECDSA_R_ECDSA_GET_X9_62_FIELDID_FAILURE 111
-#define ECDSA_R_ECDSA_NEW_FAILURE 112
-#define ECDSA_R_ECDSA_R_D2I_EC_PARAMETERS_FAILURE 135
-#define ECDSA_R_ECDSA_R_D2I_X9_62_EC_PARAMETERS_FAILURE 113
-#define ECDSA_R_ECPARAMETERS2ECDSA_FAILURE 138
-#define ECDSA_R_EC_GROUP_NID2CURVE_FAILURE 136
-#define ECDSA_R_ERR_EC_LIB 114
-#define ECDSA_R_I2D_ECDSA_PRIVATEKEY 115
-#define ECDSA_R_I2D_ECDSA_PUBLICKEY 116
-#define ECDSA_R_MISSING_PARAMETERS 117
-#define ECDSA_R_NOT_SUPPORTED 118
-#define ECDSA_R_NO_CURVE_PARAMETER_A_SPECIFIED 119
-#define ECDSA_R_NO_CURVE_PARAMETER_B_SPECIFIED 120
-#define ECDSA_R_NO_CURVE_SPECIFIED 121
-#define ECDSA_R_NO_FIELD_SPECIFIED 122
-#define ECDSA_R_PRIME_MISSING 123
-#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 124
-#define ECDSA_R_SIGNATURE_MALLOC_FAILED 125
-#define ECDSA_R_UNEXPECTED_ASN1_TYPE 126
-#define ECDSA_R_UNEXPECTED_PARAMETER 127
-#define ECDSA_R_UNEXPECTED_PARAMETER_LENGTH 128
-#define ECDSA_R_UNEXPECTED_VERSION_NUMER 129
-#define ECDSA_R_UNKNOWN_PARAMETERS_TYPE 137
-#define ECDSA_R_WRONG_FIELD_IDENTIFIER 130
-#define ECDSA_R_X9_62_CURVE_NEW_FAILURE 131
-#define ECDSA_R_X9_62_EC_PARAMETERS_NEW_FAILURE 132
+#define ECDSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE 101
+#define ECDSA_R_ERR_EC_LIB 102
+#define ECDSA_R_MISSING_PARAMETERS 103
+#define ECDSA_R_RANDOM_NUMBER_GENERATION_FAILED 104
+#define ECDSA_R_SIGNATURE_MALLOC_FAILED 105
#ifdef __cplusplus
}
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