crypto.sign(algorithm, data, key[, callback])
algorithm<string> | <null> | <undefined>data<ArrayBuffer> | <Buffer> | <TypedArray> | <DataView>key<Object> | <string> | <ArrayBuffer> | <Buffer> | <TypedArray> | <DataView> | <KeyObject> | <CryptoKey>callback<Function>- 返回: <Buffer> 如果未提供
callback函数。
使用给定的私钥和算法计算并返回 data 的签名。
如果 algorithm 是 null 或 undefined,则算法取决于密钥类型(尤其是 Ed25519 和 Ed448)。
如果 key 不是 KeyObject,则此函数的行为就像将 key 传给 crypto.createPrivateKey() 一样。
如果是对象,则可以传入以下额外属性:
-
dsaEncoding<string> 对于 DSA 和 ECDSA,此选项指定生成签名的格式。 它可以是以下之一:'der'(默认):DER 编码的 ASN.1 签名结构编码(r, s)。'ieee-p1363': IEEE-P1363 中提议的签名格式r || s。
-
padding<integer> RSA 的可选填充值,以下之一:crypto.constants.RSA_PKCS1_PADDING(默认)crypto.constants.RSA_PKCS1_PSS_PADDING
RSA_PKCS1_PSS_PADDING将使用 MGF1 与用于签署消息的相同散列函数,如 RFC 4055 的第 3.1 节中指定的那样。 -
saltLength<integer> 填充为RSA_PKCS1_PSS_PADDING时的盐长度。 特殊值crypto.constants.RSA_PSS_SALTLEN_DIGEST将盐长度设置为摘要大小,crypto.constants.RSA_PSS_SALTLEN_MAX_SIGN(默认值)将其设置为最大允许值。
如果提供了 callback 函数,则该函数使用 libuv 的线程池。
algorithm<string> | <null> | <undefined>data<ArrayBuffer> | <Buffer> | <TypedArray> | <DataView>key<Object> | <string> | <ArrayBuffer> | <Buffer> | <TypedArray> | <DataView> | <KeyObject> | <CryptoKey>callback<Function>- Returns: <Buffer> if the
callbackfunction is not provided.
Calculates and returns the signature for data using the given private key and
algorithm. If algorithm is null or undefined, then the algorithm is
dependent upon the key type (especially Ed25519 and Ed448).
If key is not a KeyObject, this function behaves as if key had been
passed to crypto.createPrivateKey(). If it is an object, the following
additional properties can be passed:
-
dsaEncoding<string> For DSA and ECDSA, this option specifies the format of the generated signature. It can be one of the following:'der'(default): DER-encoded ASN.1 signature structure encoding(r, s).'ieee-p1363': Signature formatr || sas proposed in IEEE-P1363.
-
padding<integer> Optional padding value for RSA, one of the following:crypto.constants.RSA_PKCS1_PADDING(default)crypto.constants.RSA_PKCS1_PSS_PADDING
RSA_PKCS1_PSS_PADDINGwill use MGF1 with the same hash function used to sign the message as specified in section 3.1 of RFC 4055. -
saltLength<integer> Salt length for when padding isRSA_PKCS1_PSS_PADDING. The special valuecrypto.constants.RSA_PSS_SALTLEN_DIGESTsets the salt length to the digest size,crypto.constants.RSA_PSS_SALTLEN_MAX_SIGN(default) sets it to the maximum permissible value.
If the callback function is provided this function uses libuv's threadpool.