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Merge pull request #7424 from gabor-mezei-arm/7256_unit_tests_for_p192k1

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Add unit tests for ecp_mod_p192k1()
This commit is contained in:
Janos Follath
2023-04-18 12:19:40 +01:00
committed by GitHub
parent 1b59e76a8f cec506083b
commit 3c3b94a31b
4 changed files with 122 additions and 0 deletions
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8
library/ecp_curves.c
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@ -4608,6 +4608,8 @@ static int ecp_mod_p448(mbedtls_mpi *);
#endif
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
static int ecp_mod_p192k1(mbedtls_mpi *);
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p192k1(mbedtls_mpi *);
#endif
#if defined(MBEDTLS_ECP_DP_SECP224K1_ENABLED)
static int ecp_mod_p224k1(mbedtls_mpi *);
@ -5604,6 +5606,12 @@ cleanup:
* with R = 2^32 + 2^12 + 2^8 + 2^7 + 2^6 + 2^3 + 1 = 0x0100001119
*/
static int ecp_mod_p192k1(mbedtls_mpi *N)
{
return mbedtls_ecp_mod_p192k1(N);
}
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p192k1(mbedtls_mpi *N)
{
static mbedtls_mpi_uint Rp[] = {
MBEDTLS_BYTES_TO_T_UINT_8(0xC9, 0x11, 0x00, 0x00, 0x01, 0x00, 0x00,

11
library/ecp_invasive.h
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@ -169,6 +169,17 @@ int mbedtls_ecp_mod_p384_raw(mbedtls_mpi_uint *X, size_t X_limbs);
#endif /* MBEDTLS_ECP_DP_SECP384R1_ENABLED */
#if defined(MBEDTLS_ECP_DP_SECP192K1_ENABLED)
/*
* Fast quasi-reduction modulo p192k1 = 2^192 - R,
* with R = 2^32 + 2^12 + 2^8 + 2^7 + 2^6 + 2^3 + 1 = 0x0100001119
*/
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p192k1(mbedtls_mpi *N);
#endif /* MBEDTLS_ECP_DP_SECP192K1_ENABLED */
/** Initialise a modulus with hard-coded const curve data.
*
* \note The caller is responsible for the \p N modulus' memory.