flutter开发AES加密、SHA-1加密、base64加密、请求参数按key按ASCII排序key1=value1key2=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);