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ECP: Catch unsupported import/export

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mbedtls_ecp_read_key() module returned without an error even when
importing keys corresponding to the requested group was not
implemented.

We change this and return an error when the requested group is not
supported and make the remaining import/export functions more robust.
This commit is contained in:
Janos Follath
2019-02-26 10:53:34 +00:00
parent b65853c6b6
commit 28eb06df16
3 changed files with 57 additions and 32 deletions
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4
tests/suites/test_suite_ecp.data
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@@ -328,6 +328,10 @@ ECP read key #13 (montgomery, not long enough)
depends_on:MBEDTLS_ECP_DP_CURVE25519_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE25519:"0FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3":MBEDTLS_ERR_ECP_INVALID_KEY
ECP read key #14 (Curve448, not supported)
depends_on:MBEDTLS_ECP_DP_CURVE448_ENABLED
mbedtls_ecp_read_key:MBEDTLS_ECP_DP_CURVE448:"FCFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF":MBEDTLS_ERR_ECP_FEATURE_UNAVAILABLE
ECP mod p192 small (more than 192 bits, less limbs than 2 * 192 bits)
depends_on:MBEDTLS_ECP_DP_SECP192R1_ENABLED
ecp_fast_mod:MBEDTLS_ECP_DP_SECP192R1:"0100000000000103010000000000010201000000000001010100000000000100"