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Rework mbedtls_ecp_write_key to remove unnecessary output parameter

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Signed-off-by: Steven Cooreman <steven.cooreman@silabs.com>
This commit is contained in:
Steven Cooreman 2020-06-11 17:00:36 +02:00
parent e3fd39289e
commit c9b7f78647
5 changed files with 14 additions and 32 deletions
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10
include/mbedtls/ecp.h
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@ -1152,20 +1152,20 @@ int mbedtls_ecp_read_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
*
* \param grp_id The ECP group identifier.
* \param key The private key.
* \param olen The amount of bytes written into the output buffer.
* \param buf The output buffer containing the binary representation of
* the key. (Big endian integer for Weierstrass curves, byte
* \param buf The output buffer for containing the binary representation
* of the key. (Big endian integer for Weierstrass curves, byte
* string for Montgomery curves.)
* \param buflen The total length of the buffer in bytes.
*
* \return \c 0 on success.
* \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if key is larger than buffer.
* \return #MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL if the \p key
representation is larger than the available space in \p buf.
* \return #MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE if the operation for
* the group is not implemented.
* \return Another negative error code on different kinds of failure.
*/
int mbedtls_ecp_write_key( mbedtls_ecp_group_id grp_id, mbedtls_ecp_keypair *key,
size_t *olen, unsigned char *buf, size_t buflen );
unsigned char *buf, size_t buflen );
/**
* \brief This function checks that the keypair objects