1 /*
2 * Copyright (c) 2001-2019, Arm Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 /*
8 * All the includes that are needed for code using this module to
9 * compile correctly should be #included here.
10 */
11 #include "cc_pal_types.h"
12 #include "cc_ecpki_types.h"
13
14
15 /**************** The domain structure describing *************/
16 /**
17 // The structure containing EC domain parameters in little-endian form.
18 // Elliptic curve: Y^2 = X^3 + A*X + B over prime fild GFp
19
20 typedef struct {
21
22 // Field modulus: GF_Modulus = P
23 uint32_t ecP [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS];
24 // EC equation parameters a, b
25 uint32_t ecA [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS];
26 uint32_t ecB [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS];
27 // Order of generator: EC_GenerOrder
28 uint32_t ecOrd [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS + 1];
29 // Generator (EC base point) coordinates in projective form
30 uint32_t ecGx [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS];
31 uint32_t ecGy [CC_ECPKI_MODUL_MAX_LENGTH_IN_WORDS];
32 // EC cofactor EC_Cofactor_K
33 uint32_t ecH;
34 // include the specific fields that are used by the low level
35 uint32_t barrTagBuff[CC_PKA_DOMAIN_BUFF_SIZE_IN_WORDS];
36 // Size of fields in bits
37 uint32_t modSizeInBits;
38 uint32_t ordSizeInBits;
39 // Size of each inserted Barret tag in words; 0 - if not inserted
40 uint32_t barrTagSizeInWords;
41 CCEcpkiDomainID_t DomainID;
42 int8_t name[20];
43
44 } CCEcpkiDomain_t;
45
46 */
47
48
49 /***********************************************************************************
50 * Data base of CC_ECPKI_DomainID_secp256k1: structure of type CCEcpkiDomain_t *
51 * All data is given in little endian order of words in arrays *
52 ***********************************************************************************/
53 static const CCEcpkiDomain_t ecpki_domain_secp256k1 = {
54 /* Field modulus : GF_Modulus = FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F - big end*/
55 {0xFFFFFC2F,0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
56 /* EC equation parameters a, b */
57 /* a = 0 - big end from SEC2 */
58 {0x00000000},
59 /* b = 7 - big end from SEC2 */
60 {0x00000007},
61
62 /* Order of generator: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 big end from SEC2 */
63 {0xD0364141,0xBFD25E8C,0xAF48A03B,0xBAAEDCE6,0xFFFFFFFE,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF},
64
65 /* Generator coordinates in affine form: EC_Gener_X, EC_Gener_Y (in ordinary representation) */
66 /* 79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798 X - big end from SEC2 */
67 {0x16F81798,0x59F2815B,0x2DCE28D9,0x029BFCDB,0xCE870B07,0x55A06295,0xF9DCBBAC,0x79BE667E},
68 /* 483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8 Y - big end from SEC2 */
69 {0xFB10D4B8,0x9C47D08F,0xA6855419,0xFD17B448,0x0E1108A8,0x5DA4FBFC,0x26A3C465,0x483ADA77},
70
71 1, /* EC cofactor K */
72
73 /* Barrett tags NP,RP */
74 #ifdef CC_SUPPORT_PKA_128_32
75 {0x00000000,0x00000000,0x00000000,0x00000000,0x00000080,
76 0x000000A2,0x00000000,0x00000000,0x00000000,0x00000080},
77 #else // CC_SUPPORT_PKA_64_16
78 {0x00000000,0x00000000,0x00000080,0x00000000, 0x00000000,
79 0x00000000,0x00000000,0x00000080,0x00000000,0x00000000},
80 #endif
81
82 256, /* Size of field modulus in bits */
83 256, /* Size of order of generator in bits */
84 5, /* Size of each inserted Barret tag in words; 0 - if not inserted */
85
86 CC_ECPKI_DomainID_secp256k1, /* EC Domain identifier - enum */
87 "SECG_PRIME_256K1"
88 };
89
90
91
92
93 /**
94 @brief the function returns the domain pointer id the domain is supported for the product;
95 otherwise return NULL
96 @return return domain pointer or NULL
97
98 */
CC_EcpkiGetSecp256k1DomainP(void)99 const CCEcpkiDomain_t *CC_EcpkiGetSecp256k1DomainP(void)
100 {
101 return &ecpki_domain_secp256k1;
102 }
103
104
