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nx/utils/gm-crypto/index.js

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+export * as SM2 from './lib/sm2/'
+export * as SM3 from './lib/sm3'
+export * as SM4 from './lib/sm4'

nx/utils/gm-crypto/lib/sm2/const.js

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+export const C1C2C3 = 0
+export const C1C3C2 = 1
+export const PC = '04' // 未压缩

nx/utils/gm-crypto/lib/utils.js

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+// 32 位整数无符号循环左移
+export const leftShift = (a, n) => {
+  n = n % 32
+  return (a << n) | (a >>> (32 - n))
+}
+
+// 补全 16 进制字符串
+export const leftPad = (str, num) => {
+  const padding = num - str.length
+  return (padding > 0 ? '0'.repeat(padding) : '') + str
+}