init: v1.0.0

grand/drng/internal/config.go

@@ -0,0 +1,37 @@
+package internal
+
+import (
+	"errors"
+	"time"
+)
+
+const (
+	MinEntropyInputLength = 256 >> 3       // 最小熵阈值256比特
+	MaxEntropyInputLength = (1 << 35) >> 3 // 最大熵阈值2^35比特
+
+)
+
+// 可能返回的错误
+var (
+	ErrNeedReseed          = errors.New("[drng] - need reseed")
+	ErrReturnedBitsTooLong = errors.New("[drng] - requested number of bits too long")
+	ErrEntropyLength       = errors.New("[drng] - entropy length too short or too long")
+)
+
+// 安全级别
+type SecureLevel uint
+
+const (
+	SecureLevel1 SecureLevel = 1 + iota
+	SecureLevel2
+)
+
+type DrngConfig struct {
+	Seedlen                 int
+	Outlen                  int
+	ReseedIntervalInTime    time.Duration // 重播种时间阈值
+	ReseedIntervalInCounter int           // 重播种计数器阈值
+	MinEntropy              int64
+	MinEntropyInputLength   int64
+	MaxEntropyInputLength   int64
+}