ecc curve generation | 易学教程

https://www.johannes-bauer.com/compsci/ecc/#anchor17

A very powerful math libary on-line

http://sagecell.sagemath.org/

转至元数据结尾

由 Jin, Huijie创建, 最后修改于八月 06, 2018

转至元数据起始

SM2 Standard

sm2_standard

•a=FFFFFFFE FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF 00000000 FFFFFFFF FFFFFFFC

•b=28E9FA9E 9D9F5E34 4D5A9E4B CF6509A7 F39789F5 15AB8F92 DDBCBD41 4D940E93

SM2 SW(O)

sm2_osr_sw

•a=FFFFFFFE FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF 00000000 FFFFFFFF FFFFFFFC

•b=28E9FA9E 9D9F5E34 4D5A9E4B CF6509A7 F39789F5 15AB8F92 DDBCBD41 4D940E93

•//OSR SM2 Parameters, little endian for word order, LSB is in A[0]

•U32 SM2P_a[8] ={0xFFFFFFFC,0xFFFFFFFF,0x00000000,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFF,0xFFFFFFFE};

•U32 SM2P_b[8] ={0x4D940E93,0xDDBCBD41,0x15AB8F92,0xF39789F5,0xCF6509A7,0x4D5A9E4B,0x9D9F5E34,0x28E9FA9E};

gmssl curve data

gmssl curve data

•a=FFFFFFFE FFFFFFFF FFFFFFFF FFFFFFFF FFFFFFFF 00000000 FFFFFFFF FFFFFFFC

•b=28E9FA9E 9D9F5E34 4D5A9E4B CF6509A7 F39789F5 15AB8F92 DDBCBD41 4D940E93

•//gmssl curve data, byte stream order

• {0xFF,0xFF,0xFF,0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00,0x00,0x00,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFC}, // A

• {0x28,0xE9,0xFA,0x9E,0x9D,0x9F,0x5E,0x34,0x4D,0x5A,0x9E,0x4B,0xCF,0x65,0x09,0xA7,0xF3,0x97,0x89,0xF5,0x15,0xAB,0x8F,0x92,0xDD,0xBC,0xBD,0x41,0x4D,0x94,0x0E,0x93}, // B

Gmssl software BIGNUM 64bits/8Byte

gmssl software BN

struct bignum_st {

• BN_ULONG *d; /* Pointer to an array of 'BN_BITS2' bit

• * chunks. */

• int top; /* Index of last used d +1. */

• /* The next are internal book keeping for bn_expand. */

• int dmax; /* Size of the d array. */

• int neg; /* one if the number is negative */

• int flags;

•};

•curve b=28E9FA9E 9D9F5E34 4D5A9E4B CF6509A7 F39789F5 15AB8F92 DDBCBD41 4D940E93

•a = {0xDDBCBD414D940E93 , 0xF39789F515AB8F92, 0x4D5A9E4BCF6509A7, 0x28E9FA9E9D9F5E34}

•to = {0x28,0xE9,0xFA,0x9E,0x9D,0x9F,0x5E,0x34,0x4D,0x5A,0x9E,0x4B,0xCF,0x65,0x09,0xA7,0xF3,0x97,0x89,0xF5,0x15,0xAB,0x8F,0x92,0xDD,0xBC,0xBD,0x41,0x4D,0x94,0x0E,0x93}, // B

•int BN_bn2bin(const BIGNUM *a, unsigned char *to)

•{

• int n, i;

• BN_ULONG l;

•

• bn_check_top(a);

• n = i = BN_num_bytes(a);

• while (i--) {

• l = a->d[i / BN_BYTES];

• *(to++) = (unsigned char)(l >> (8 * (i % BN_BYTES))) & 0xff;

• }

• return (n);

}

来源：CSDN

作者：hjj61

链接：https://blog.csdn.net/u011218405/article/details/89470733

标签

ecc