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Merge pull request #7427 from minosgalanakis/ecp/7258_ecp_mod_p256K1_add_test_cases

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ECP: Add Unit Tests for secp256k1
This commit is contained in:
Janos Follath
2023-04-26 08:52:24 +01:00
committed by GitHub
parent 10f40916eb 4dfed0a186
commit 91a618375a
4 changed files with 121 additions and 1 deletions
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11
library/ecp_curves.c
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@@ -4618,6 +4618,8 @@ int mbedtls_ecp_mod_p224k1(mbedtls_mpi *);
#endif
#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
static int ecp_mod_p256k1(mbedtls_mpi *);
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p256k1(mbedtls_mpi *);
#endif
#if defined(ECP_LOAD_GROUP)
@@ -5630,11 +5632,18 @@ int mbedtls_ecp_mod_p224k1(mbedtls_mpi *N)
#endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
static int ecp_mod_p256k1(mbedtls_mpi *N)
{
return mbedtls_ecp_mod_p256k1(N);
}
/*
* Fast quasi-reduction modulo p256k1 = 2^256 - R,
* with R = 2^32 + 2^9 + 2^8 + 2^7 + 2^6 + 2^4 + 1 = 0x01000003D1
*/
static int ecp_mod_p256k1(mbedtls_mpi *N)
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p256k1(mbedtls_mpi *N)
{
static mbedtls_mpi_uint Rp[] = {
MBEDTLS_BYTES_TO_T_UINT_8(0xD1, 0x03, 0x00, 0x00, 0x01, 0x00, 0x00,

7
library/ecp_invasive.h
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@@ -186,6 +186,13 @@ int mbedtls_ecp_mod_p224k1(mbedtls_mpi *N);
#endif /* MBEDTLS_ECP_DP_SECP224K1_ENABLED */
#if defined(MBEDTLS_ECP_DP_SECP256K1_ENABLED)
MBEDTLS_STATIC_TESTABLE
int mbedtls_ecp_mod_p256k1(mbedtls_mpi *N);
#endif /* MBEDTLS_ECP_DP_SECP256K1_ENABLED */
/** Initialise a modulus with hard-coded const curve data.
*
* \note The caller is responsible for the \p N modulus' memory.