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[WIP]Add ED25519 implementation for EC-ElGamal. #167

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[WIP]Add ED25519 implementation for EC-ElGamal. #167

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2 changes: 1 addition & 1 deletion crypto/ec/build.info
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ LIBS=../../libcrypto
SOURCE[../../libcrypto]=\
ec_lib.c ecp_smpl.c ecp_mont.c ecp_nist.c ec_cvt.c ec_mult.c \
ec_err.c ec_curve.c ec_check.c ec_print.c ec_asn1.c ec_key.c \
ec2_smpl.c ec_ameth.c ec_pmeth.c eck_prn.c \
ec2_smpl.c ec_ameth.c ec_pmeth.c eck_prn.c ecp_ed25519.c \
ecp_nistp224.c ecp_nistp256.c ecp_nistp521.c ecp_nistputil.c \
ecp_oct.c ec2_oct.c ec_oct.c ec_kmeth.c ecdh_ossl.c ecdh_kdf.c \
ecdsa_ossl.c ecdsa_sign.c ecdsa_vrf.c curve25519.c ecx_meth.c \
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39 changes: 39 additions & 0 deletions crypto/ec/ec_curve.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2790,6 +2790,43 @@ static const struct {
};
#endif /* OPENSSL_NO_SM2 */

static const struct {
EC_CURVE_DATA h;
unsigned char data[0 + 32 * 6];
} _EC_ED25519 = {
{
NID_ED25519, 0, 32, 8
},
{
/* no seed */

/* p */
0x7f, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xed,
/* a = 0 */
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* b */
0x52, 0x03, 0x6c, 0xee, 0x2b, 0x6f, 0xfe, 0x73, 0x8c, 0xc7, 0x40, 0x79,
0x77, 0x79, 0xe8, 0x98, 0x00, 0x70, 0x0a, 0x4d, 0x41, 0x41, 0xd8, 0xab,
0x75, 0xeb, 0x4d, 0xca, 0x13, 0x59, 0x78, 0xa3,
/* x */
0x21, 0x69, 0x36, 0xd3, 0xcd, 0x6e, 0x53, 0xfe, 0xc0, 0xa4, 0xe2, 0x31,
0xfd, 0xd6, 0xdc, 0x5c, 0x69, 0x2c, 0xc7, 0x60, 0x95, 0x25, 0xa7, 0xb2,
0xc9, 0x56, 0x2d, 0x60, 0x8f, 0x25, 0xd5, 0x1a,
/* y */
0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66,
0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x58,
/* order */
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x14, 0xde, 0xf9, 0xde, 0xa2, 0xf7, 0x9c, 0xd6,
0x58, 0x12, 0x63, 0x1a, 0x5c, 0xf5, 0xd3, 0xed,
}
};

typedef struct _ec_list_element_st {
int nid;
const EC_CURVE_DATA *data;
Expand Down Expand Up @@ -3003,6 +3040,8 @@ static const ec_list_element curve_list[] = {
{NID_sm2, &_EC_sm2p256v1.h, 0,
"SM2 curve over a 256 bit prime field"},
#endif
{NID_ED25519, &_EC_ED25519.h, EC_GFp_ed25519_method,
"ED25519 curve over a 256 bit prime field"},
};

#define curve_list_length OSSL_NELEM(curve_list)
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6 changes: 5 additions & 1 deletion crypto/ec/ec_err.c
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
/*
* Generated by util/mkerr.pl DO NOT EDIT
* Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved.
* Copyright 1995-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
Expand Down Expand Up @@ -88,6 +88,10 @@ static const ERR_STRING_DATA EC_str_functs[] = {
"ec_GF2m_simple_point_set_affine_coordinates"},
{ERR_PACK(ERR_LIB_EC, EC_F_EC_GF2M_SIMPLE_SET_COMPRESSED_COORDINATES, 0),
"ec_GF2m_simple_set_compressed_coordinates"},
{ERR_PACK(ERR_LIB_EC, EC_F_EC_GFP_ED25519_POINT2OCT, 0),
"ec_GFp_ed25519_point2oct"},
{ERR_PACK(ERR_LIB_EC, EC_F_EC_GFP_ED25519_POINT_SET_AFFINE_COORDINATES, 0),
"ec_GFp_ed25519_point_set_affine_coordinates"},
{ERR_PACK(ERR_LIB_EC, EC_F_EC_GFP_MONT_FIELD_DECODE, 0),
"ec_GFp_mont_field_decode"},
{ERR_PACK(ERR_LIB_EC, EC_F_EC_GFP_MONT_FIELD_ENCODE, 0),
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1 change: 1 addition & 0 deletions crypto/ec/ec_local.h
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Expand Up @@ -306,6 +306,7 @@ struct ec_point_st {
* Z) represents (X/Z^2, Y/Z^3) if Z != 0 */
int Z_is_one; /* enable optimized point arithmetics for
* special case */
BIGNUM *T;
};

static ossl_inline int ec_point_is_compat(const EC_POINT *point,
Expand Down
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