first

2026-06-04 11:01:29 +08:00
commit cccb578669
14509 changed files with 2636947 additions and 0 deletions
@@ -0,0 +1,23 @@
+'use strict';
+
+function getParamSize(keySize) {
+	var result = ((keySize / 8) | 0) + (keySize % 8 === 0 ? 0 : 1);
+	return result;
+}
+
+var paramBytesForAlg = {
+	ES256: getParamSize(256),
+	ES384: getParamSize(384),
+	ES512: getParamSize(521)
+};
+
+function getParamBytesForAlg(alg) {
+	var paramBytes = paramBytesForAlg[alg];
+	if (paramBytes) {
+		return paramBytes;
+	}
+
+	throw new Error('Unknown algorithm "' + alg + '"');
+}
+
+module.exports = getParamBytesForAlg;