The signing key's size is 40 bits which is not secure enough for the HS256 algorithm. The JWT JWA Specification (RFC 7518, Section 3.2) states that keys used with HS256 MUST have a size >= 256 bits (the key size must be greater than or equal to the hash output size). Consider using the io.jsonwebtoken.security.Keys class's 'secretKeyFor(SignatureAlgorithm.HS256)' method to create a key guaranteed to be secure enough for HS256. See https://tools.ietf.org/html/rfc7518#section-3.2 for more information.] with root cause

This error message indicates that the size of the signing key being used for the HS256 algorithm is not secure enough. According to the JWT JWA Specification, keys used with HS256 must have a size of at least 256 bits. To resolve this issue, you can use the 'secretKeyFor(SignatureAlgorithm.HS256)' method from the io.jsonwebtoken.security.Keys class to generate a key that is guaranteed to be secure enough for HS256. You can refer to the following link for more information: https://tools.ietf.org/html/rfc7518#section-3.2.

相关问题

Bluetooth LE supports the ability to send authenticated data over an unencrypted ATT bearer between two devices with a trusted relationship. This is accomplished by signing the data with a Connection Signature Resolving Key (CSRK). The sending device places a signature after the Data PDU. The receiving device verifies the signature and if the signature is verified the Data PDU is assumed to come from the trusted source. The signature is composed of a Message Authentication Code generated by the signing algorithm and a counter. The counter is used to protect against a replay attack and is incremented on each signed Data PDU sent.

蓝牙低功耗支持在两个具有信任关系的设备之间通过未加密的ATT承载发送经过身份验证的数据。这是通过使用连接签名解析密钥（CSRK）对数据进行签名来实现的。发送设备在数据PDU之后放置签名。接收设备验证签名，如果签名验证成功，则假定数据PDU来自受信任的源。签名由签名算法生成的消息认证码和计数器组成。计数器用于防止重放攻击，并在发送每个已签名的数据PDU时递增。

jwt signingkey

关于JWT签名密钥的问题，我可以给您一些基本的信息。JWT（JSON Web Token）是一种用于身份验证的令牌，它可以通过数字签名来保证信息的可靠性。签名密钥是用于生成数字签名的秘密密钥，只有知道该密钥的人才能验证令牌的真实性。一般情况下，这个密钥是由服务器随机生成并保存在安全位置上，以确保仅有授权的用户能够访问它。希望这个答案可以帮助到您。