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mbedtls ported to mbed-classic
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mbedtls
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Christopher Haster
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Elliptic curve DSA. More...
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Typedefs | |
| typedef mbedtls_ecp_keypair | mbedtls_ecdsa_context |
| ECDSA context structure. | |
Functions | |
| 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) |
| Compute ECDSA signature of a previously hashed message. | |
| int | mbedtls_ecdsa_sign_det (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) |
| Compute ECDSA signature of a previously hashed message, deterministic version (RFC 6979). | |
| 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) |
| Verify ECDSA signature of a previously hashed message. | |
| 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 *slen, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng) |
| Compute ECDSA signature and write it to buffer, serialized as defined in RFC 4492 page 20. | |
| int | mbedtls_ecdsa_write_signature_det (mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, unsigned char *sig, size_t *slen, mbedtls_md_type_t md_alg) MBEDTLS_DEPRECATED |
| Compute ECDSA signature and write it to buffer, serialized as defined in RFC 4492 page 20. | |
| int | mbedtls_ecdsa_read_signature (mbedtls_ecdsa_context *ctx, const unsigned char *hash, size_t hlen, const unsigned char *sig, size_t slen) |
| Read and verify an ECDSA signature. | |
| int | mbedtls_ecdsa_genkey (mbedtls_ecdsa_context *ctx, mbedtls_ecp_group_id gid, int(*f_rng)(void *, unsigned char *, size_t), void *p_rng) |
| Generate an ECDSA keypair on the given curve. | |
| int | mbedtls_ecdsa_from_keypair (mbedtls_ecdsa_context *ctx, const mbedtls_ecp_keypair *key) |
| Set an ECDSA context from an EC key pair. | |
| void | mbedtls_ecdsa_init (mbedtls_ecdsa_context *ctx) |
| Initialize context. | |
| void | mbedtls_ecdsa_free (mbedtls_ecdsa_context *ctx) |
| Free context. | |
Detailed Description
Elliptic curve DSA.
Copyright (C) 2006-2015, ARM Limited, All Rights Reserved SPDX-License-Identifier: Apache-2.0
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
This file is part of mbed TLS (https://tls.mbed.org)
Definition in file ecdsa.h.
Typedef Documentation
Function Documentation
| void mbedtls_ecdsa_free | ( | mbedtls_ecdsa_context * | ctx ) |
| int mbedtls_ecdsa_from_keypair | ( | mbedtls_ecdsa_context * | ctx, |
| const mbedtls_ecp_keypair * | key | ||
| ) |
| int mbedtls_ecdsa_genkey | ( | mbedtls_ecdsa_context * | ctx, |
| mbedtls_ecp_group_id | gid, | ||
| int(*)(void *, unsigned char *, size_t) | f_rng, | ||
| void * | p_rng | ||
| ) |
Generate an ECDSA keypair on the given curve.
- Parameters:
-
ctx ECDSA context in which the keypair should be stored gid Group (elliptic curve) to use. One of the various MBEDTLS_ECP_DP_XXX macros depending on configuration. f_rng RNG function p_rng RNG parameter
- Returns:
- 0 on success, or a MBEDTLS_ERR_ECP_XXX code.
| void mbedtls_ecdsa_init | ( | mbedtls_ecdsa_context * | ctx ) |
| int mbedtls_ecdsa_read_signature | ( | mbedtls_ecdsa_context * | ctx, |
| const unsigned char * | hash, | ||
| size_t | hlen, | ||
| const unsigned char * | sig, | ||
| size_t | slen | ||
| ) |
Read and verify an ECDSA signature.
- Parameters:
-
ctx ECDSA context hash Message hash hlen Size of hash sig Signature to read and verify slen Size of sig
- Returns:
- 0 if successful, MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid, MBEDTLS_ERR_ECP_SIG_LEN_MISMATCH if the signature is valid but its actual length is less than siglen, or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_ERR_MPI_XXX error code
| 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(*)(void *, unsigned char *, size_t) | f_rng, | ||
| void * | p_rng | ||
| ) |
Compute ECDSA signature of a previously hashed message.
- Note:
- The deterministic version is usually prefered.
- Parameters:
-
grp ECP group r First output integer s Second output integer d Private signing key buf Message hash blen Length of buf f_rng RNG function p_rng RNG parameter
- Returns:
- 0 if successful, or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
| int mbedtls_ecdsa_sign_det | ( | 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 | ||
| ) |
Compute ECDSA signature of a previously hashed message, deterministic version (RFC 6979).
- Parameters:
-
grp ECP group r First output integer s Second output integer d Private signing key buf Message hash blen Length of buf md_alg MD algorithm used to hash the message
- Returns:
- 0 if successful, or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
| 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 | ||
| ) |
Verify ECDSA signature of a previously hashed message.
- Parameters:
-
grp ECP group buf Message hash blen Length of buf Q Public key to use for verification r First integer of the signature s Second integer of the signature
- Returns:
- 0 if successful, MBEDTLS_ERR_ECP_BAD_INPUT_DATA if signature is invalid or a MBEDTLS_ERR_ECP_XXX or MBEDTLS_MPI_XXX error code
| 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 * | slen, | ||
| int(*)(void *, unsigned char *, size_t) | f_rng, | ||
| void * | p_rng | ||
| ) |
Compute ECDSA signature and write it to buffer, serialized as defined in RFC 4492 page 20.
(Not thread-safe to use same context in multiple threads)
- Note:
- The deterministice version (RFC 6979) is used if MBEDTLS_ECDSA_DETERMINISTIC is defined.
- Parameters:
-
ctx ECDSA context md_alg Algorithm that was used to hash the message hash Message hash hlen Length of hash sig Buffer that will hold the signature slen Length of the signature written f_rng RNG function p_rng RNG parameter
- Note:
- The "sig" buffer must be at least as large as twice the size of the curve used, plus 9 (eg. 73 bytes if a 256-bit curve is used). MBEDTLS_ECDSA_MAX_LEN is always safe.
- Returns:
- 0 if successful, or a MBEDTLS_ERR_ECP_XXX, MBEDTLS_ERR_MPI_XXX or MBEDTLS_ERR_ASN1_XXX error code
| int mbedtls_ecdsa_write_signature_det | ( | mbedtls_ecdsa_context * | ctx, |
| const unsigned char * | hash, | ||
| size_t | hlen, | ||
| unsigned char * | sig, | ||
| size_t * | slen, | ||
| mbedtls_md_type_t | md_alg | ||
| ) |
Compute ECDSA signature and write it to buffer, serialized as defined in RFC 4492 page 20.
Deterministic version, RFC 6979. (Not thread-safe to use same context in multiple threads)
- Parameters:
-
ctx ECDSA context hash Message hash hlen Length of hash sig Buffer that will hold the signature slen Length of the signature written md_alg MD algorithm used to hash the message
- Note:
- The "sig" buffer must be at least as large as twice the size of the curve used, plus 9 (eg. 73 bytes if a 256-bit curve is used). MBEDTLS_ECDSA_MAX_LEN is always safe.
- Returns:
- 0 if successful, or a MBEDTLS_ERR_ECP_XXX, MBEDTLS_ERR_MPI_XXX or MBEDTLS_ERR_ASN1_XXX error code
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