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Merge remote-tracking branch 'upstream-public/pr/1528' into development-proposed

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This commit is contained in:
Jaeden Amero 2018-03-29 11:00:50 +01:00
commit 2ad47e3bcc
3 changed files with 10 additions and 2 deletions
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3
ChangeLog
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@ -49,6 +49,9 @@ Changes
* Provide an empty implementation of mbedtls_pkcs5_pbes2() when * Provide an empty implementation of mbedtls_pkcs5_pbes2() when
MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2 MBEDTLS_ASN1_PARSE_C is not enabled. This allows the use of PBKDF2
without PBES2. Fixed by Marcos Del Sol Vives. without PBES2. Fixed by Marcos Del Sol Vives.
* Add the order of the base point as N in the mbedtls_ecp_group structure
for Curve25519 (other curves had it already). Contributed by Nicholas
Wilson #481
= mbed TLS 2.8.0 branch released 2018-03-16 = mbed TLS 2.8.0 branch released 2018-03-16

2
include/mbedtls/ecp.h
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@ -144,7 +144,7 @@ typedef struct
mbedtls_mpi A; /*!< 1. A in the equation, or 2. (A + 2) / 4 */ mbedtls_mpi A; /*!< 1. A in the equation, or 2. (A + 2) / 4 */
mbedtls_mpi B; /*!< 1. B in the equation, or 2. unused */ mbedtls_mpi B; /*!< 1. B in the equation, or 2. unused */
mbedtls_ecp_point G; /*!< generator of the (sub)group used */ mbedtls_ecp_point G; /*!< generator of the (sub)group used */
mbedtls_mpi N; /*!< 1. the order of G, or 2. unused */ mbedtls_mpi N; /*!< the order of G */
size_t pbits; /*!< number of bits in P */ size_t pbits; /*!< number of bits in P */
size_t nbits; /*!< number of bits in 1. P, or 2. private keys */ size_t nbits; /*!< number of bits in 1. P, or 2. private keys */
unsigned int h; /*!< internal: 1 if the constants are static */ unsigned int h; /*!< internal: 1 if the constants are static */

7
library/ecp_curves.c
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@ -670,7 +670,12 @@ static int ecp_use_curve25519( mbedtls_ecp_group *grp )
MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 19 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_sub_int( &grp->P, &grp->P, 19 ) );
grp->pbits = mbedtls_mpi_bitlen( &grp->P ); grp->pbits = mbedtls_mpi_bitlen( &grp->P );
/* Y intentionaly not set, since we use x/z coordinates. /* N = 2^252 + 27742317777372353535851937790883648493 */
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string( &grp->N, 16,
"14DEF9DEA2F79CD65812631A5CF5D3ED" ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_set_bit( &grp->N, 252, 1 ) );
/* Y intentionally not set, since we use x/z coordinates.
* This is used as a marker to identify Montgomery curves! */ * This is used as a marker to identify Montgomery curves! */
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 9 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.X, 9 ) );
MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) ); MBEDTLS_MPI_CHK( mbedtls_mpi_lset( &grp->G.Z, 1 ) );