Python 使用国密有很多第三方库

有gmssl、pycryptodome等

以下是手动实现（参考了网上的代码且做略微修改）

from array import array

Tj_rl = array('L', ((0x79cc4519 << j | 0x79cc4519 >> 32 - j) & 0xffffffff for j in range(16)))
Tj_rl.extend((0x7a879d8a << (j & 31) | 0x7a879d8a >> (32 - j & 31)) & 0xffffffff for j in range(16, 64))
V0 = array('L', [0x7380166f, 0x4914b2b9, 0x172442d7, 0xda8a0600, 0xa96f30bc, 0x163138aa, 0xe38dee4d, 0xb0fb0e4e])

def CF(V, B):
    W = array('L', B)
    for j in range(16, 68):
        X = W[j - 16] ^ W[j - 9] ^ (W[j - 3] << 15 | W[j - 3] >> 17) & 0xffffffff
        W.append((X ^ (X << 15 | X >> 17) ^ (X << 23 | X >> 9) ^ (W[j - 13] << 7 | W[j - 13] >> 25) ^ W[j - 6]) & 0xffffffff)
    W_ = array('L', (W[j] ^ W[j + 4] for j in range(64)))
    A, B, C, D, E, F, G, H = V
    for j in range(64):
        A_rl12 = A << 12 | A >> 20
        tmp = (A_rl12 + E + Tj_rl[j]) & 0xffffffff
        SS1 = (tmp << 7 | tmp >> 25)
        SS2 = SS1 ^ A_rl12
        if j & 0x30:  # 16 <= j
            FF, GG = A & B | A & C | B & C, E & F | ~E & G
        else:
            FF, GG = A ^ B ^ C, E ^ F ^ G
        TT1, TT2 = (FF + D + SS2 + W_[j]) & 0xffffffff, (GG + H + SS1 + W[j]) & 0xffffffff
        C, D, G, H = (B << 9 | B >> 23) & 0xffffffff, C, (F << 19 | F >> 13) & 0xffffffff, G
        A, B, E, F = TT1, A, (TT2 ^ (TT2 << 9 | TT2 >> 23) ^ (TT2 << 17 | TT2 >> 15)) & 0xffffffff, E
    return A ^ V[0], B ^ V[1], C ^ V[2], D ^ V[3], E ^ V[4], F ^ V[5], G ^ V[6], H ^ V[7]

def digest(data):
    # 填充
    pad_num = 64 - (len(data) + 1 & 0x3f)
    data += b'\x80' + (len(data) << 3).to_bytes(pad_num if pad_num >= 8 else pad_num + 64, 'big')
    V, B = V0, array('L', data)
    B.byteswap()
    # 迭代压缩
    for i in range(0, len(B), 16):
        V = CF(V, B[i:i + 16])
    V = array('L', V)
    V.byteswap()
    return V.tobytes()

使用gmssl库进行比对算出来的结果

from gmssl import sm3, func
from util.gm_util import digest


def test_sm3():
    data = "sm3_test_12345678"
    data_bytes = data.encode('utf-8')
    # 计算SM3哈希值
    sm3_hash = sm3.sm3_hash(func.bytes_to_list(data_bytes))
    sm3_hash2 = digest(data_bytes)
    sm3_hash2 = ''.join(f'{byte:02x}' for byte in sm3_hash2)
    print("gmssl库生成->", sm3_hash)
    print("自定义函数生成->", sm3_hash2)


test_sm3()

最后的输出结果

gmssl库生成-> 78d24683f804ada766f92313843548a357dbc9adaa6aae95902db1b031e8b1a0
自定义函数生成-> 78d24683f804ada766f92313843548a357dbc9adaa6aae95902db1b031e8b1a0

和GMSSL库生成的完全一致，说明自定义的函数实现是符合标准算法的。