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Test mbedtls_mpi_fill_random

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Positive tests: test that the RNG has the expected size, given that we
know how many leading zeros it has because we know how the function
consumes bytes and when the test RNG produces null bytes.

Negative tests: test that if the RNG is willing to emit less than the
number of wanted bytes, the function fails.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2020-11-25 15:37:20 +01:00
parent 401ba5e9b7
commit 2f78062e75
2 changed files with 90 additions and 0 deletions
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42
tests/suites/test_suite_mpi.data
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@ -929,6 +929,48 @@ mbedtls_mpi_set_bit:16:"00":32:1:16:"0100000000":0
Test bit set (Invalid bit value)
mbedtls_mpi_set_bit:16:"00":5:2:16:"00":MBEDTLS_ERR_MPI_BAD_INPUT_DATA
Fill random: 0 bytes
mpi_fill_random:0:0:0
Fill random: 1 byte, good
mpi_fill_random:1:1:0
Fill random: 2 bytes, good, no leading zero
mpi_fill_random:2:2:0
Fill random: 2 bytes, good, 1 leading zero
mpi_fill_random:2:256:0
Fill random: MAX_SIZE - 7, good
mpi_fill_random:MBEDTLS_MPI_MAX_SIZE - 7:MBEDTLS_MPI_MAX_SIZE - 7:0
Fill random: MAX_SIZE, good
mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE:0
Fill random: 1 byte, RNG failure
mpi_fill_random:1:0:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 2 bytes, RNG failure after 1 byte
mpi_fill_random:2:1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 4 bytes, RNG failure after 3 bytes
mpi_fill_random:4:3:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 8 bytes, RNG failure after 7 bytes
mpi_fill_random:8:7:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 16 bytes, RNG failure after 1 bytes
mpi_fill_random:16:1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 16 bytes, RNG failure after 8 bytes
mpi_fill_random:16:8:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: 16 bytes, RNG failure after 15 bytes
mpi_fill_random:16:15:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
Fill random: MAX_SIZE bytes, RNG failure after MAX_SIZE-1 bytes
mpi_fill_random:MBEDTLS_MPI_MAX_SIZE:MBEDTLS_MPI_MAX_SIZE-1:MBEDTLS_ERR_ENTROPY_SOURCE_FAILED
MPI Selftest
depends_on:MBEDTLS_SELF_TEST
mpi_selftest: