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Merge pull request #4694 from gilles-peskine-arm/out_size-3.0

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Add output size parameter to signature functions
This commit is contained in:
Ronald Cron
2021-06-29 09:43:17 +02:00
committed by GitHub
parent 55a4d938d0 f9f1bdfa7b
commit 8682faeb09
20 changed files with 137 additions and 83 deletions
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6
include/mbedtls/ecdsa.h
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@ -290,6 +290,7 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
* size of the curve used, plus 9. For example, 73 Bytes if
* a 256-bit curve is used. A buffer length of
* #MBEDTLS_ECDSA_MAX_LEN is always safe.
* \param sig_size The size of the \p sig buffer in bytes.
* \param slen The address at which to store the actual length of
* the signature written. Must not be \c NULL.
* \param f_rng The RNG function. This must not be \c NULL if
@ -306,7 +307,7 @@ int mbedtls_ecdsa_verify( mbedtls_ecp_group *grp,
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,
unsigned char *sig, size_t sig_size, size_t *slen,
int (*f_rng)(void *, unsigned char *, size_t),
void *p_rng );
@ -332,6 +333,7 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx,
* size of the curve used, plus 9. For example, 73 Bytes if
* a 256-bit curve is used. A buffer length of
* #MBEDTLS_ECDSA_MAX_LEN is always safe.
* \param sig_size The size of the \p sig buffer in bytes.
* \param slen The address at which to store the actual length of
* the signature written. Must not be \c NULL.
* \param f_rng The RNG function. This must not be \c NULL if
@ -352,7 +354,7 @@ int mbedtls_ecdsa_write_signature( mbedtls_ecdsa_context *ctx,
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 *slen,
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 );

7
include/mbedtls/pk.h
View File

@ -63,6 +63,7 @@
#define MBEDTLS_ERR_PK_UNKNOWN_NAMED_CURVE -0x3A00 /**< Elliptic curve is unsupported (only NIST curves are supported). */
#define MBEDTLS_ERR_PK_FEATURE_UNAVAILABLE -0x3980 /**< Unavailable feature, e.g. RSA disabled for RSA key. */
#define MBEDTLS_ERR_PK_SIG_LEN_MISMATCH -0x3900 /**< The buffer contains a valid signature followed by more data. */
#define MBEDTLS_ERR_PK_BUFFER_TOO_SMALL -0x3880 /**< The output buffer is too small. */
#ifdef __cplusplus
extern "C" {
@ -495,6 +496,7 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
* #MBEDTLS_PK_SIGNATURE_MAX_SIZE is always enough.
* You may use a smaller buffer if it is large enough
* given the key type.
* \param sig_size The size of the \p sig buffer in bytes.
* \param sig_len On successful return,
* the number of bytes written to \p sig.
* \param f_rng RNG function, must not be \c NULL.
@ -511,7 +513,7 @@ int mbedtls_pk_verify_ext( mbedtls_pk_type_t type, const void *options,
*/
int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
unsigned char *sig, size_t *sig_len,
unsigned char *sig, size_t sig_size, size_t *sig_len,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng );
/**
@ -532,6 +534,7 @@ int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
* #MBEDTLS_PK_SIGNATURE_MAX_SIZE is always enough.
* You may use a smaller buffer if it is large enough
* given the key type.
* \param sig_size The size of the \p sig buffer in bytes.
* \param sig_len On successful return,
* the number of bytes written to \p sig.
* \param f_rng RNG function, must not be \c NULL.
@ -545,7 +548,7 @@ int mbedtls_pk_sign( mbedtls_pk_context *ctx, mbedtls_md_type_t md_alg,
int mbedtls_pk_sign_restartable( mbedtls_pk_context *ctx,
mbedtls_md_type_t md_alg,
const unsigned char *hash, size_t hash_len,
unsigned char *sig, size_t *sig_len,
unsigned char *sig, size_t sig_size, size_t *sig_len,
int (*f_rng)(void *, unsigned char *, size_t), void *p_rng,
mbedtls_pk_restart_ctx *rs_ctx );