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Exp mod: Make sure RR has enough limbs

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When generated by exp_mod, RR has enough limbs to be passed as a
parameter to core functions. If it is received from the caller, it might
be of any length.

Signed-off-by: Janos Follath <janos.follath@arm.com>
This commit is contained in:
Janos Follath
2024-02-20 14:30:46 +00:00
parent 518b5b60c6
commit 0512d178e0
3 changed files with 38 additions and 0 deletions
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library/bignum.c
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@ -1639,6 +1639,7 @@ int mbedtls_mpi_exp_mod(mbedtls_mpi *X, const mbedtls_mpi *A,
*prec_RR = RR;
}
} else {
MBEDTLS_MPI_CHK(mbedtls_mpi_grow(prec_RR, N->n));
RR = *prec_RR;
}