flutter开发AES加密、SHA-1验签、base64加密、请求参数按key按ASCII排序key1=value1&key2=value2&...&keyN=valueN

1、AES用的是encrypt

static String aesKey = 'sxcbk2gFGcODQp0daccgAh=='; //AES加密 static String aesEncode(String content) { try { final key = Key.fromUtf8(base64Encode(aesKey.codeUnits)); final encrypter = Encrypter(AES(key, mode: AESMode.ecb)); final encrypted = encrypter.encrypt(content, iv: IV.fromLength(16)); return encrypted.base64; } catch (err) { print("aes encode error:$err"); return content; } } //AES解密 static dynamic aesDecode(dynamic base64) { try { final key = Key.fromUtf8(base64Encode(aesKey.codeUnits)); final encrypter = Encrypter(AES(key, mode: AESMode.ecb)); return encrypter.decrypt64(base64, iv: IV.fromLength(16)); } catch (err) { print("aes decode error:$err"); return base64; } }

2、SHA-1使用的是crypto

String sign = sha1.convert(utf8.encode(str)).toString();

3、请求参数按key按ASCII排序key1=value1&key2=value2&...&keyN=valueN

List attrKeys = paramMap.keys.toList(); attrKeys.sort(); //排序 ASCII 字符顺序进行排序 var str = ''; for (var i = 0; i < paramMap.length; i++) { if (i == paramMap.length - 1) { str += "${attrKeys[i]}=${paramMap[attrKeys[i]]}"; } else { str += "${attrKeys[i]}=${paramMap[attrKeys[i]]}&"; } } print(str);