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- Fixed incorrect handling of negative first input value in mpi_mod_mpi() and mpi_mod_int(). Resulting change also affects mpi_write_string() (found by code coverage tests).

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This commit is contained in:
Paul Bakker 2009-06-23 19:46:08 +00:00
parent 1ef7a53fa2
commit ce40a6d21d
3 changed files with 25 additions and 3 deletions
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8
include/polarssl/bignum.h
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@ -308,6 +308,8 @@ int mpi_mul_mpi( mpi *X, mpi *A, mpi *B );
/**
* \brief Baseline multiplication: X = A * b
* Note: b is an unsigned integer type, thus
* Negative values of b are ignored.
*
* \return 0 if successful,
* 1 if memory allocation failed
@ -341,7 +343,8 @@ int mpi_div_int( mpi *Q, mpi *R, mpi *A, int b );
*
* \return 0 if successful,
* 1 if memory allocation failed,
* POLARSSL_ERR_MPI_DIVISION_BY_ZERO if B == 0
* POLARSSL_ERR_MPI_DIVISION_BY_ZERO if B == 0,
* POLARSSL_ERR_MPI_NEGATIVE_VALUE if B < 0
*/
int mpi_mod_mpi( mpi *R, mpi *A, mpi *B );
@ -350,7 +353,8 @@ int mpi_mod_mpi( mpi *R, mpi *A, mpi *B );
*
* \return 0 if successful,
* 1 if memory allocation failed,
* POLARSSL_ERR_MPI_DIVISION_BY_ZERO if b == 0
* POLARSSL_ERR_MPI_DIVISION_BY_ZERO if b == 0,
* POLARSSL_ERR_MPI_NEGATIVE_VALUE if b < 0
*/
int mpi_mod_int( t_int *r, mpi *A, int b );