18#ifndef MBEDTLS_ECDSA_H
19#define MBEDTLS_ECDSA_H
44#define MBEDTLS_ECDSA_MAX_SIG_LEN(bits) \
45 ( ((bits) >= 61 * 8 ? 3 : 2) + \
46 2 * (((bits) >= 127 * 8 ? 3 : 2) + \
50#define MBEDTLS_ECDSA_MAX_LEN MBEDTLS_ECDSA_MAX_SIG_LEN(MBEDTLS_ECP_MAX_BITS)
70#if defined(MBEDTLS_ECP_RESTARTABLE)
77typedef struct mbedtls_ecdsa_restart_ver mbedtls_ecdsa_restart_ver_ctx;
84typedef struct mbedtls_ecdsa_restart_sig mbedtls_ecdsa_restart_sig_ctx;
86#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
92typedef struct mbedtls_ecdsa_restart_det mbedtls_ecdsa_restart_det_ctx;
103#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
162 const mbedtls_mpi *d,
const unsigned char *buf,
size_t blen,
163 int (*f_rng)(
void *,
unsigned char *,
size_t),
void *p_rng);
165#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
208 const unsigned char *buf,
size_t blen,
210 int (*f_rng_blind)(
void *,
unsigned char *,
size_t),
214#if !defined(MBEDTLS_ECDSA_SIGN_ALT)
273 const unsigned char *buf,
size_t blen,
274 int (*f_rng)(
void *,
unsigned char *,
size_t),
276 int (*f_rng_blind)(
void *,
unsigned char *,
size_t),
282#if defined(MBEDTLS_ECDSA_DETERMINISTIC)
335 const mbedtls_mpi *d,
const unsigned char *buf,
size_t blen,
337 int (*f_rng_blind)(
void *,
unsigned char *,
size_t),
374 const unsigned char *buf,
size_t blen,
378#if !defined(MBEDTLS_ECDSA_VERIFY_ALT)
415 const unsigned char *buf,
size_t blen,
474 const unsigned char *hash,
size_t hlen,
475 unsigned char *sig,
size_t sig_size,
size_t *slen,
476 int (*f_rng)(
void *,
unsigned char *,
size_t),
521 const unsigned char *hash,
size_t hlen,
522 unsigned char *sig,
size_t sig_size,
size_t *slen,
523 int (*f_rng)(
void *,
unsigned char *,
size_t),
555 const unsigned char *hash,
size_t hlen,
556 const unsigned char *sig,
size_t slen);
590 const unsigned char *hash,
size_t hlen,
591 const unsigned char *sig,
size_t slen,
611 int (*f_rng)(
void *,
unsigned char *,
size_t),
void *p_rng);
648#if defined(MBEDTLS_ECP_RESTARTABLE)
int mbedtls_ecdsa_verify(mbedtls_ecp_group *grp, const unsigned char *buf, size_t blen, const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s)
This function verifies the ECDSA signature of a previously-hashed message.
int mbedtls_ecdsa_sign_det_ext(mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, mbedtls_md_type_t md_alg, int(*f_rng_blind)(void *, unsigned char *, size_t), void *p_rng_blind)
This function computes the ECDSA signature of a previously-hashed message, deterministic version.
void mbedtls_ecdsa_free(mbedtls_ecdsa_context *ctx)
This function frees an ECDSA context.
int mbedtls_ecdsa_sign_det_restartable(mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, mbedtls_md_type_t md_alg, int(*f_rng_blind)(void *, unsigned char *, size_t), void *p_rng_blind, mbedtls_ecdsa_restart_ctx *rs_ctx)
This function computes the ECDSA signature of a previously-hashed message, in a restartable way.
int mbedtls_ecdsa_verify_restartable(mbedtls_ecp_group *grp, const unsigned char *buf, size_t blen, const mbedtls_ecp_point *Q, const mbedtls_mpi *r, const mbedtls_mpi *s, mbedtls_ecdsa_restart_ctx *rs_ctx)
This function verifies the ECDSA signature of a previously-hashed message, in a restartable manner.
int mbedtls_ecdsa_from_keypair(mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key)
This function sets up an ECDSA context from an EC key pair.
int mbedtls_ecdsa_read_signature_restartable(mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, const unsigned char *sig, size_t slen, mbedtls_ecdsa_restart_ctx *rs_ctx)
This function reads and verifies an ECDSA signature, in a restartable way.
int mbedtls_ecdsa_write_signature_restartable(mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t sig_size, size_t *slen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng, mbedtls_ecdsa_restart_ctx *rs_ctx)
This function computes the ECDSA signature and writes it to a buffer, in a restartable way.
int mbedtls_ecdsa_read_signature(mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, const unsigned char *sig, size_t slen)
This function reads and verifies an ECDSA signature.
mbedtls_ecp_keypair mbedtls_ecdsa_context
The ECDSA context structure.
int mbedtls_ecdsa_genkey(mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
This function generates an ECDSA keypair on the given curve.
int mbedtls_ecdsa_can_do(mbedtls_ecp_group_id gid)
This function checks whether a given group can be used for ECDSA.
int mbedtls_ecdsa_write_signature(mbedtls_ecdsa_context *ctx, mbedtls_md_type_t md_alg, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t sig_size, size_t *slen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
This function computes the ECDSA signature and writes it to a buffer, serialized as defined in RFC-44...
void mbedtls_ecdsa_restart_ctx
void mbedtls_ecdsa_init(mbedtls_ecdsa_context *ctx)
This function initializes an ECDSA context.
int mbedtls_ecdsa_sign(mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng)
This function computes the ECDSA signature of a previously-hashed message.
int mbedtls_ecdsa_sign_restartable(mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s, const mbedtls_mpi *d, const unsigned char *buf, size_t blen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng, int(*f_rng_blind)(void *, unsigned char *, size_t), void *p_rng_blind, mbedtls_ecdsa_restart_ctx *rs_ctx)
This function computes the ECDSA signature of a previously-hashed message, in a restartable way.
This file provides an API for Elliptic Curves over GF(P) (ECP).
void mbedtls_ecp_restart_ctx
Build-time configuration info.
This file contains the generic functions for message-digest (hashing) and HMAC.
mbedtls_md_type_t
Supported message digests.
Macro wrapper for struct's members.
#define MBEDTLS_PRIVATE(member)
The ECP key-pair structure.
The ECP point structure, in Jacobian coordinates.