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Avoid in-out length parameter in bignum

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Manuel Pégourié-Gonnard
2015-06-02 15:41:48 +01:00
parent 9693668c23
commit f79b425226
3 changed files with 20 additions and 19 deletions
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14
include/mbedtls/bignum.h
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@ -324,17 +324,19 @@ int mbedtls_mpi_read_string( mbedtls_mpi *X, int radix, const char *s );
*
* \param X Source MPI
* \param radix Output numeric base
* \param s String buffer
* \param slen String buffer size
* \param buf Buffer to write the string to
* \param buflen Length of buf
* \param olen Length of the string written, including final NUL byte
*
* \return 0 if successful, or a MBEDTLS_ERR_MPI_XXX error code.
* *slen is always updated to reflect the amount
* *olen is always updated to reflect the amount
* of data that has (or would have) been written.
*
* \note Call this function with *slen = 0 to obtain the
* minimum required buffer size in *slen.
* \note Call this function with buflen = 0 to obtain the
* minimum required buffer size in *olen.
*/
int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix, char *s, size_t *slen );
int mbedtls_mpi_write_string( const mbedtls_mpi *X, int radix,
char *buf, size_t buflen, size_t *olen );
#if defined(MBEDTLS_FS_IO)
/**